WO2024009939A1 - Electric tool - Google Patents

Abstract

The problem of the present disclosure is to aim to reduce power consumption while reducing the possibility that it will be difficult to resume work. A tool body (20) can be held in hand, and a drive unit (11) is provided in the tool body (20) to realize a drive function. The drive function is a function of driving a tip tool (24) attached to the tool body (20). A detection unit (13) is provided in the tool body (20) and can realize a plurality of detection functions. A plurality of detection functions are functions that each detect a state or a change in state related to the tool body (20) and/or the drive unit (11). A setting unit (14) uses at least one detection result among the plurality of detection results corresponding to the plurality of detection functions to set the mode related to the drive function and the plurality of detection functions to be changeable between a work mode and a standby mode. A function control unit (151) disables the realization of the drive function when the mode is set to the standby mode, and disables the realization of one or more detection functions except for at least one of the plurality of detection functions.

Description

Electric tool

The present disclosure relates to a power tool, and more specifically, to a power tool that has a detection function, a drive function, etc., and controls the drive function etc. based on the detection result of the detection function.

The power tool described in Patent Document 1 includes a drive section, an operation section, a detection section, and a control section. The drive unit drives the tool. The operation unit receives an operation for operating the drive unit. The detection unit detects whether the tool body is in a held state in which the tool body is held by a user or in a non-held state in which the tool body is not held by a user. The control unit controls the operating state of the drive unit to an operating state set based on an input signal from the operating unit and a detection result by the detection unit. There are three operating states of the drive unit: a working state, a standby state, and a stopped state. The working state is a state in which the drive section drives the tool. The standby state is a state in which the operation of the drive unit is not prohibited and the drive unit is not operating. The stopped state is a state in which the power tool is not in use and the operation of the drive unit is prohibited.

In the power tool of Patent Document 1, the detection section is basically constantly operating. Therefore, in a stopped state when the power tool is not in use and the drive unit is prohibited from operating, there is room for reducing power consumption by having the control unit control the detection unit to stop operating. there were. On the other hand, if the operation of the detection unit is stopped in the stopped state, the trigger for changing the state from the stopped state to the working state may not be detected, making it difficult to restart the work.

JP2017-205824A

An object of the present disclosure is to provide a power tool that can reduce power consumption while reducing the possibility that it will be difficult to resume work.

A power tool according to one aspect of the present disclosure includes a tool body, a drive section, a detection section, a setting section, and a function control section. The tool main body can be attached with a tip tool for performing a predetermined work, and can be held by the operator who performs the predetermined work. The drive section is provided in the tool body and is capable of realizing a drive function. The driving function is a function of driving the tip tool attached to the tool body. The detection section is provided in the tool body and can realize a plurality of detection functions. The plurality of detection functions are functions that each detect a state or a change in state related to at least one of the tool body and the drive section. The setting unit changes a mode related to the driving function and the plurality of detection functions between a work mode and a standby mode using at least one detection result among the plurality of detection results corresponding to the plurality of detection functions. Set to possible. The function control unit disables the realization of the driving function when the mode is set to the standby mode, and disables the implementation of one or more detection functions except at least one detection function among the plurality of detection functions. Make realization impossible.

FIG. 1 is a block diagram of a power tool according to an embodiment of the present disclosure. FIG. 2 is an overview diagram of the power tool same as above. FIG. 3 is a flowchart showing a part of the operation (mode setting process) of the above power tool. FIG. 4 is a flowchart showing another part of the operation (function control processing) of the above power tool. FIG. 5 is an explanatory diagram of a plurality of detection functions that can be realized by the detection section constituting the power tool described above. FIG. 6 shows the states of the tool body and the drive part that make up the same power tool, the state of the worker working with the same power tool, and the drive functions that can be realized by the drive part that makes up the same power tool. It is a figure which shows the relationship with the mode regarding several detection functions same as the above. FIG. 7 is a diagram showing functions that are enabled or disabled in each of the work mode and standby mode that constitute the above modes, among the various functions that can be realized by each part of the power tool. be. FIG. 8 shows various first state changes that can trigger a change from standby mode to work mode and various second state changes that can trigger a change from work mode to standby mode in the same power tool as described above. FIG. FIG. 9 shows how the work is performed when the various functions described above include a first state change detection function that detects the first state change described above, and a function necessary for detecting the first state change described above. FIG. 3 is a diagram showing functions to be enabled or disabled in each of the mode and standby mode.

(1) Overview First, an overview of the present disclosure will be explained using FIG. 1.

(1-1) Overview of the power tool The power tool 10 according to the embodiment of the present disclosure is capable of realizing a driving function and a plurality of detection functions, and the modes related to the driving function and the plurality of detection functions are set to a work mode and a standby mode. Set it so that it can be changed between. In the standby mode, the power tool 10 disables the driving function and one or more detection functions other than at least one of the plurality of detection functions. Note that in the work mode, it is possible to implement a driving function and a plurality of sensing functions. This makes it possible to suppress power consumption while reducing the possibility that it will be difficult to resume work.

(1-2) Characteristic functions Among multiple detection functions, "at least one detection function" that is excluded from being disabled in standby mode has a trigger (return) for changing from standby mode to operation mode 1 trigger) is included. In the standby mode, implementation of the driving function and "one or more detection functions" other than the "first state change detection function" among the plurality of detection functions is prohibited.

Note that the first state change detection function is, for example, a "reception state change detection function" that detects a state change from an unreceived state in which an instruction from the external device 30 has not been received to a received state in which an instruction has already been received. It is. That is, in the standby mode, the driving function and one or more detection functions other than the "reception state change function" among the plurality of detection functions are prohibited from being realized.

In this way, by removing the first state change detection function such as the reception state change detection function from the objects to be disabled in standby mode, it is possible to detect a trigger for a change from standby mode to work mode.

(2) Details of power tool Next, details of the power tool 10 will be explained using FIGS. 1 and 2.

As shown in FIGS. 1 and 2, the power tool 10 of this embodiment includes a tool main body 20, a drive section 11, an operation section 12, a detection section 13, a setting section 14, a control section 15, and a communication section. 16. The control section 15 includes a function control section 151.

Note that the external device 30 is, for example, a management device that manages the power tools 10, and the power tool management system 1 is configured by the plurality of power tools 10 and the external device 30. The external device 30 and each of the plurality of power tools 10 can communicate, for example, via a communication medium 100 such as a wireless LAN (Local Area Network).

(2-1) Tool Main Body The tool main body 20 can be equipped with a tip tool 24 for performing a predetermined work, and can be held by an operator who performs a predetermined work.

(2-1-1) Predetermined Work The predetermined work is, for example, tightening work, but may also be drilling work. The tip tool 24 in this embodiment is, for example, a socket as shown in FIG. 2 used for bolt tightening work. However, the tip tool 24 may be, for example, a plus/minus bit used for tightening screws, a drill used for drilling holes, or the like (both not shown).

(2-1-2) Specific example of tool main body The tool main body 20 includes a grip part 21, a body part 22, and a battery mounting part 23, as illustrated in FIG. The grip portion 21 is a portion that a worker grips when working with the power tool 10. The grip portion 21 is provided with a trigger switch 121. A tip portion of an output shaft (not shown) is exposed from one end in the axial direction of the body portion 22, and a tool mounting portion (not shown) to which a tip tool 24 can be attached is attached to this tip portion. A battery pack 181 containing a rechargeable battery (not shown) is removably mounted on the battery mounting portion 23 .

Further, the tool body 20 is provided with various sensors for realizing a plurality of detection functions by the detection section 13, which will be described later. Note that the plurality of detection functions and various sensors will be described later.

(2-2) Drive unit The drive unit 11 is provided in the tool body 20 and can realize a drive function. The driving function is a function of driving the tip tool 24 attached to the tool body 20. The drive function is realized by, for example, a tool mounting section (not shown), an electric motor (not shown), a battery pack 181, an output shaft (not shown), and the control section 15.

The tip tool 24 is attached to the tool attachment part. The battery pack 181 supplies power to an electric motor and the like. The output shaft has a tool mounting section attached to one end and an electric motor attached to the other end, and outputs the torque generated by the electric motor to the tip tool 24 mounted on the tool mounting section.

(2-3) Operation unit The operation unit 12 receives an operation for operating the drive unit 11. An operation for operating the drive section 11 is, for example, an operation of a trigger switch 121 provided on the grip section 21. The operator operates the trigger switch 121 while holding the grip section 21, and the operation section 12 outputs a signal corresponding to the amount of operation of the trigger switch 121.

(2-4) Detection Unit The detection unit 13 is provided in the tool body 20 and can realize a plurality of detection functions.

The plurality of detection functions that can be realized by the detection unit 13 (hereinafter sometimes simply referred to as “multiple detection functions”) each detect a state or a change in state related to at least one of the tool body 20 and the drive unit 11. It is a function.

(2-4-1) Conditions related to at least one of the tool body 20 and the drive unit The conditions related to at least one of the tool body 20 and the drive unit 11 include, for example, the hand-held state/non-hand-held state of the tool body 20, the drive These include the driving state/non-driving state of the section 11, the non-receiving state/receiving state of the communication section 16 provided in the tool body 20, and the like.

Note that the hand-held state/non-hand-held state is equivalent to a moving state/non-moving state based on the output of a motion sensor built into the tool body 20, and also a force provided on the grip portion 21 of the tool body 20. It is equivalent to the force detection state/non-detection state based on the output of a sensor (not shown).

(2-4-2) State change The state change is, for example, a state change between a hand-held state/non-hand-held state (that is, a moving state/non-moving state, or a force sensing state/non-sensing state), a driving state/ These include a state change between a non-driving state, a state change between an unreceived state/a received state, and the like.

(2-4-3) Means for realizing the detection function The tool main body 20 is provided with various sensors and processing circuits (none of which are shown), and the plurality of detection functions of the detection unit 13 are performed by detecting signals from various sensors. This is achieved by processing the signal with a processing circuit. Note that the processing circuit includes an A/D converter that A/D converts signals from various sensors, a processor and memory that processes output signals of the A/D converter, and the like.

(2-4-4) Various sensors The various sensors provided in the tool body 20 include, for example, a motion sensor, a force sensor, a torque sensor, and the like.

(2-4-4a) Means for realizing handheld state detection function, etc.: Motion sensor In the power tool 10 of this embodiment, a motion sensor (not shown) is built into the body portion 22. The motion sensor detects its own motion (that is, the motion of the torso section 22) and outputs a signal according to the detection result.

The movement here includes, for example, a change in speed (acceleration or deceleration), a change in posture (rotation), a change in position (movement), etc. Examples of the motion sensor include an acceleration sensor, a gyroscope, an LPS (Local Positioning System) terminal, and a GPS (Global Positioning System) receiver.

Note that, for example, the LPS terminal receives beacon signals transmitted from each of a plurality of transmitters installed indoors, and based on a plurality of received signal strengths corresponding to the plurality of received beacon signals, Detects the position of the LPS terminal itself (that is, the position of the power tool 10) at .

Based on the signal output from the motion sensor, for example, a motion detection function (described later) that detects whether the device is in a moving state or a non-moving state is realized. A hand-held state detection function (described later) is realized.

(2-4-4b) Modified example of means for realizing handheld state detection function, etc.: Force sensor In place of or in addition to the movement sensor, a force sensor is provided on the grip part 21, and the output of the force sensor is Based on this, a hand-held state detection function may be realized. The force sensor is a sensor that detects the force applied to the grip portion 21, and includes, for example, a strain gauge, a piezoelectric effect element, and the like.

(2-4-4c) Means for realizing torque measurement function: Torque sensor In the power tool 10, a torque sensor is provided in the body portion 22 near the output shaft (not shown). The torque sensor outputs a signal according to the distortion of the output shaft, and the processing circuit acts on the object to be tightened, such as a bolt, from the electric motor via the output shaft and the tip tool 24 based on the output signal of the torque sensor. Measure the tightening torque.

Note that, for example, when the power tool 10 is an impact rotary tool, the torque measurement function can also be realized with a microphone built into the tool body 20. In this case, the processing circuit counts the number of times the impact force is applied to the output shaft based on the output of the microphone, and measures the tightening torque based on the number of times of impact.

(2-4-5) Multiple detection functions The multiple detection functions include a handheld state detection function and a driving state detection function. Further, the plurality of detection functions further include a holding state change detection function, a driving state change detection function, a working state change detection function, and a reception state change detection function.

Note that the multiple detection functions in this embodiment also include a motion detection function, which will be described later.

(2-4-5a) Hand-held state detection function The hand-held state detection function is a function that detects whether the device is hand-held or not. The hand-held state is a state in which the tool main body 20 is held by the operator. The non-handheld state is a state in which the tool main body 20 is not held in the hand of the operator (that is, a state in which it is separated from the operator's hand).

As described above, the tool body 20 further includes a motion sensor (or force sensor), and the handheld state detection function is activated when the motion sensor detects movement (or when the force sensor detects force). It is determined that the device is in a hand-held state, and if no movement is detected (or no force is detected), it is determined that the device is not in a hand-held state.

As described above, the hand-holding state detection function is realized, for example, by a processing circuit processing a signal from a motion sensor (not shown) built into the tool body 20. This may be realized by a processing circuit processing a signal from a provided force sensor.

Note that "at least one detection result" used by the setting unit 14, which will be described later, to set the mode includes a detection result corresponding to the hand-held state detection function.

(2-4-5b) Drive state detection function The drive state detection function is a function that detects whether the vehicle is in a drive state or a non-drive state. The driving state is a state in which the driving section 11 is being driven. The non-driving state is a state in which the drive section 11 is not driven.

The driving state detection function determines, for example, that if an operation is accepted by the operation unit 12, it is a driving state, and if no operation is accepted, it is a non-driving state.

That is, the drive state detection function is realized by the processing circuit detecting a signal from the operation unit 12, but it may also be realized by the processing circuit processing the signal from the torque sensor described above.

Note that "at least one detection result" used by the setting unit 14 to set the mode, which will be described later, includes a detection corresponding to the driving state detection function in addition to or in place of the detection result corresponding to the handheld state detection function. Contains results.

(2-4-5c) Handheld state change detection function The handheld state change detection function is a function that detects a state change from a non-handheld state to a handheld state, and a state change from a handheld state to a non-handheld state.

The handheld state change detection function is realized, for example, by a processing circuit detecting a change in a signal from a motion sensor (or force sensor).

(2-4-5d) Drive state change detection function The drive state change detection function is a function that detects a state change from a non-drive state to a drive state, and a state change from a drive state to a non-drive state.

The drive state change detection function is realized, for example, by the processing circuit detecting a change in a signal from the operation unit 12 (or torque sensor).

(2-4-5e) Work state change detection function The work state change detection function is a function that detects a change in state from an incomplete state to a completed state. The incomplete state is a state in which a predetermined task has not yet been completed. The completed state is a state in which a predetermined task has already been completed.

The work state change detection function detects a state change from an incomplete state to a completed state based on the detection result corresponding to the torque measurement function.

For example, the work condition change detection function integrates the detection results (tightening torque values) corresponding to the torque measurement function, and when the integration results (tightening torque integrated values) reach a reference value, Detects a state change from an incomplete state to a completed state.

The work state change detection function is realized, for example, by a processing circuit processing a signal from a torque sensor.

Note that the setting unit 14, which will be described later, changes the mode from the work mode to the standby mode when a change in state from the uncompleted state to the completed state is detected by the work state change detection function. That is, the second state change detection function, which will be described later, is, for example, a work state change detection function.

(2-4-5f) Reception state change detection function The reception state change detection function is a function that detects a change in state from an unreceived state to a received state. The unreceived state is a state in which the communication unit 16 has not yet received an instruction (hereinafter simply referred to as "instruction") from the external device 30. The received state is a state in which the communication unit 16 has already received the instruction.

The receiving state change detection function is realized, for example, by the processing circuit detecting a signal from the communication unit 16 (described later).

Note that the first state change detection function described above is a reception state change detection function in this embodiment.

(2-5) Setting section The setting section 14 uses at least one detection result among the plurality of detection results (hereinafter simply referred to as "the plurality of detection results") corresponding to the plurality of detection functions to set the drive function and the plurality of detection results. A mode related to the detection function (hereinafter simply referred to as "mode") is set to be changeable between a work mode and a standby mode.

(2-5-1) Mode settings Note that the mode settings by the setting unit 14 (hereinafter referred to as "mode settings") include initial settings, mode changes from standby mode to work mode, and mode changes from work mode to standby mode. ,including.

(2-5-2) “At least one detection result” for mode setting
Moreover, "at least one detection result" used for mode setting is usually two or more detection results, and in this embodiment, a detection result regarding the state of the tool body 20 and a detection result regarding the state of the drive unit 11. , are the two detection results. However, only one detection result (for example, a detection result regarding the state of the tool body 20) may be used for mode setting.

The detection result regarding the state of the tool body 20 is either a handheld state or a non-handheld state, and the detection result regarding the state of the drive unit 11 is either an activated state or a non-driven state.

(2-5-2a) Mode setting using the detection result corresponding to the handheld state detection function The setting unit 14 performs mode setting using, for example, the detection result corresponding to the handheld state detection function among the plurality of detection results. conduct. That is, the setting unit 14 sets the work mode when the detection result corresponding to the hand-held state detection function is "hand-held state", and sets the standby mode when the detection result is "non-hand-held state".

In this way, the multiple detection functions include the hand-held state detection function that detects whether the hand-held state is hand-held or not. By including the corresponding detection results, mode setting can be performed based on the hand-held state of the tool body 20.

(2-5-2b) Mode setting using the detection result corresponding to the drive state detection function Alternatively, the setting unit 14 may set the mode using the detection result corresponding to the drive state detection function among the plurality of detection results. You may also make settings.

In this way, the multiple detection functions include the drive state detection function that detects whether the drive state is in the drive state or the non-drive state, and "at least one detection result" for mode setting is included in the drive state detection function. By including the corresponding detection results, mode setting can be performed based on the hand-held state of the tool body 20.

(2-5-2c) Mode setting using two detection results corresponding to the handheld state detection function and the drive state detection function. Mode setting may be performed using two detection results corresponding to the state detection function.

In this way, the multiple detection functions include a handheld state detection function that detects whether the device is in a handheld state or a non-handheld state, and a drive state detection function that detects whether it is a driven state or a non-driven state. Since the "at least one detection result" for setting includes two detection results corresponding to the hand-held state detector and the drive state detection function, mode setting can be performed based on the hand-held state of the tool body 20.

(2-5-3) Mode change (2-5-3a) Change from standby mode to work mode The setting unit 14 in this embodiment detects a change in state from an unreceived state to a received state using a reception state change detection function. is detected, the mode is changed from standby mode to work mode.

That is, the first state change detection function described above is, for example, a reception state change detection function, which makes it possible to detect a trigger for a change from standby mode to work mode by using the communication function of the communication unit 16. can be achieved.

(2-5-3b) Changing from work mode to standby mode In addition, the setting unit 14 changes the mode from work mode to standby mode when a change in state from an incomplete state to a completed state is detected by the work state change detection function. Change to standby mode.

That is, the second state change detection function, which will be described later, is, for example, a work state change detection function, which allows the setting unit 14 to change from the work mode to the standby mode in accordance with the completion of the work. .

(2-6) Control Unit The control unit 15 performs various controls. Various types of control include, for example, control by the function control unit 151, which will be described later. Further, various types of control include, for example, control of an electric motor in response to signals from the operation unit 12.

(2-7) Communication Department The communication department 16 has a communication function. The communication function here is a function of communicating with the external device 30. The communication function usually includes a transmission function and a reception function, but in this embodiment, only the reception function may be used.

(2-7-1) External Device The external device 30 is, for example, a management device, but may also be a relay device, a mobile terminal, etc. (none of which are shown). The management device manages the content of work performed by the power tool 10. The relay device relays communication between the management device and the power tool 10. The mobile terminal is a terminal such as a smartphone carried by a worker who works with the power tool 10 or a supervisor who supervises the work, and is capable of communicating with a management device and the like.

The external device 30 transmits instructions (described later) to the power tool 10.

(2-7-2) Reception function of communication unit The communication unit 16 can realize a reception function. The receiving function here is a function of receiving an instruction (hereinafter simply referred to as "instruction") from the external device 30.

(2-7-3) Instruction The instruction is an instruction to change the mode of the power tool 10 from standby mode to work mode. However, the instruction does not have to explicitly indicate a mode change from standby mode to work mode, and may be any instruction that accompanies a mode change.

(2-8) Function control unit The function control unit 151 configuring the control unit 15 controls various functions (i.e., multiple functions that can be realized by the power tool 10) by each unit (11 to 17) constituting the power tool 10. each). The control of functions here includes disabling realization of functions and enabling realization of functions.

(2-8-1) Disabling function realization in standby mode When the mode is set to standby mode by the setting unit 14, the function control unit 151 disables the realization of the driving function, and disables the realization of the plurality of detection functions. One or more detection functions other than at least one of the detection functions are disabled.

Note that if the plurality of functions that can be realized by the power tool 10 include a function other than the detection function that is used by "at least one detection function" that is excluded from the target of disabling, This function is also excluded from being disabled. For example, when a receiving state detection function (described later) is excluded from being disabled, a communication function (described later) used by the receiving state detecting function is also excluded from being disabled.

(2-8-2) Method for disabling drive function The function control unit 151 disables the drive function by, for example, stopping power supply from the battery pack 181 to the drive unit 11.

(2-8-3) Method for disabling one or more detection functions For example, the function control unit 151 instructs the detection unit 13 to disable one or more detection functions corresponding to “one or more detection functions” to be disabled. By stopping (or prohibiting) the execution of the above detection processing, one or more detection functions are disabled.

(2-8-4) Advantages of disabling "one or more detection functions" in standby mode As described above, in the power tool 10 of this embodiment, the detection unit 13 can realize multiple detection functions. , the setting unit 14 sets the mode related to the drive function and the plurality of detection functions to be changeable between a work mode and a standby mode using at least one detection result among the plurality of detection results corresponding to the plurality of detection functions. do. When the mode is set to standby mode, the function control unit 151 disables the realization of the drive function and disables the realization of one or more detection functions except for at least one detection function among the plurality of detection functions. By disabling it, power consumption can be reduced.

(2-8-5) Advantages of excluding "at least one detection function" from being disabled in the power tool 10, since at least one detection function is excluded from being disabled in standby mode. By using the first detection function, it is possible to detect a trigger for a change from standby mode to work mode.

(2-8-6) Enabling realization of functions in work mode When the mode is set to work mode, the function control unit 151 enables realization of drive functions and also enables realization of multiple detection functions. become Note that in the work mode, all of the plurality of detection functions are normally enabled, but there may be some detection functions that are not enabled.

(2-8-7) Method for Enabling Drive Function The function control unit 151 enables the drive function to be realized, for example, by starting power supply from the battery pack 181 to the drive unit 11.

(2-8-8) Method for enabling multiple detection functions For example, the function control unit 151 instructs the detection unit 13 to start (or permit) execution of multiple detection processes corresponding to multiple detection functions. ), making it possible to realize multiple detection functions.

In this way, when the mode is set to the work mode by the setting unit 14, the function control unit 151 enables the realization of the drive function and also enables the realization of a plurality of detection functions. Therefore, after the mode changes from the standby mode to the work mode, it becomes possible to control the drive function using a plurality of detection results corresponding to the plurality of detection functions.

(2-8-9) Control of communication function The function control unit 151 enables implementation of the reception function at least when the mode is standby mode.

Note that the function control unit 151 may enable the reception function to be realized not only when the mode is the standby mode but also when the mode is the work mode. Further, when the mode is the work mode, the function control unit 151 may further enable the realization of a transmission function in addition to the reception function.

Further, the function control unit 151 may enable the communication function (ie, the transmission function and the reception function) to be realized regardless of whether the mode is the work mode or the standby mode.

The function control unit 151 in this embodiment enables the realization of a communication function in the work mode, and enables the realization of the reception function and disables the realization of the transmission function in the standby mode.

(3) Details of characteristic functions Next, details of characteristic functions of the power tool will be explained using FIGS. 1 and 2.

(3-1) First state change detection function The plurality of detection functions that can be realized by the detection unit 13 includes the first state change detection function. The first state change detection function is a function that detects a first state change. The first state change is a state change that becomes a first trigger. The first trigger is a trigger by which the setting unit 14 changes the mode from standby mode to work mode.

(3-1-1) Specific example of first state change The first state change is, for example, a state change from an unreceived state to a received state, a state change from a non-handheld state to a handheld state, etc. But that's fine.

(3-1-2) Specific example of first state change detection function The first state change detection function is, for example, a reception state change detection function that detects a state change from an unreceived state to a received state. It may also be a handheld state change detection function that detects a change in state from a handheld state to a handheld state.

(3-1-3) Excluding the first state change detection function from being disabled in standby mode At least one detection function that is excluded from being disabled in standby mode includes the first state change detection function. .

In this way, among the multiple detection functions, there is a state change detection function (first state change detection function) that detects a state change (first state change) that becomes a trigger (first trigger) for changing from standby mode to work mode. By removing the first state change detection function from the objects to be disabled in standby mode, it is possible to detect a trigger for a change from standby mode to work mode.

(3-2) Relationship between the first state change detection function and the mode setting detection function This is a detection function that is different from both the detection function and the detection function of . In this embodiment, for example, since the hand-held state detection function and the drive state detection function are used for mode setting, the first state change detection function is the reception state detection function.

In this way, the first state change detection function is a different detection function from the one or more detection functions for mode setting, so even if one or more detection functions for mode setting are disabled in standby mode, , it is possible to enable trigger detection of a change from standby mode to work mode.

(3-3) Second state change detection function The plurality of detection functions include a second state change detection function. The second state change detection function is a function that detects a second state change. The second state change is a state change that becomes a second trigger. The second trigger is a trigger by which the setting unit 14 changes the mode from the work mode to the standby mode.

The second state change is, for example, a state change from an incomplete state to a completed state, but may also be a state change from a hand-held state to a non-hand-held state (for example, a state change from a moving state to a non-moving state).

The one or more detection functions to be disabled in standby mode include the second state change detection function.

In this way, among the multiple detection functions, there is a state change detection function (second state change) that detects a state change (second state change) that becomes a trigger (second trigger) for changing from work mode to standby mode. Detection function) is also included. The second state change detection function is included in the disabling target in the standby mode (that is, the realization of the second state change detection function is disabled in the standby mode), thereby suppressing power consumption. Can be done.

(3-4) Mode setting based on handheld/non-handheld state and driving/non-driving state The setting unit 14 in this embodiment is configured such that the detection result corresponding to the handheld state detection function indicates the handheld state and the driving state detection function The mode is set to work when the corresponding detection result indicates the driving state, or when the detection result corresponding to the handheld state detection function indicates the handheld state and the detection result corresponding to the driving state detection function indicates the non-driving state. Set to mode.

Further, the setting unit 14 sets the mode to standby mode when the detection result corresponding to the handheld state detection function indicates a non-handheld state, and the detection result corresponding to the driving state detection function indicates a non-driving state.

Note that a case where the detection result corresponding to the hand-held state detection function indicates the hand-held state and the detection result corresponding to the drive state detection function indicates the drive state means that the operator holds the tool body 20 with his/her hand and holds the tool in a predetermined position. This is a state in which work is being performed (that is, a work state). In addition, when the detection result corresponding to the hand-held state detection function indicates the hand-held state, and the detection result corresponding to the drive state detection function indicates the non-driving state, the operator works while holding the tool main body 20 in the hand. is in a state where it is waiting for the start of the process (in other words, it is in a state where it is waiting for work). Furthermore, the case where the detection result corresponding to the handheld state detection function indicates a non-handheld state and the detection result corresponding to the drive state detection function indicates a non-driving state means that the operator is performing another task in which the power tool 10 is not used. The computer is in a state where it is doing the following or taking a break (that is, a standby state).

(3-5) Mode change based on change between handheld/non-handheld state The setting unit 14 does not change the mode only when the detection result corresponding to the drive state detection function changes from the drive state to the non-drive state; , the mode is changed from the standby mode to the work mode in response to the detection result corresponding to the handheld state detection function changing from the non-handheld state to the handheld state.

Further, the setting unit 14 changes the mode from the standby mode to the work mode in response to the detection result corresponding to the handheld state detection function changing from the handheld state to the non-handheld state.

In this way, the mode can be set between the work mode and the standby mode based on the detection result corresponding to the handheld state detection function and the detection result corresponding to the drive state detection function.

(3-6) Modified example of mode setting: Mode setting based on hand-held/non-hand-held state The setting unit 14 in this modified example sets the mode to work mode when the detection result corresponding to the hand-held state detection function indicates a hand-held state. Set to . Moreover, the setting unit 14 sets the mode to standby mode when the detection result corresponding to the hand-held state detection function indicates a non-hand-held state.

Note that in this modification as well, the setting unit 14 changes the mode from the standby mode to the work mode in response to the detection result corresponding to the handheld state detection function changing from the non-handheld state to the handheld state, and changes the mode to the handheld state. In response to the change from the state to the non-handheld state, the mode is changed from standby mode to work mode.

In this modification, the case where the detection result corresponding to the hand-held state detection function indicates a hand-held state is a state in which the operator is holding the tool body 20 with his/her hand and performing a predetermined work (that is, a working state). , or a state in which the operator is waiting for the start of work while holding the tool main body 20 in his hand (that is, a work waiting state). Further, a case where the detection result corresponding to the hand-held state detection function indicates a non-hand-held state is a state where the worker is doing another work that does not use the power tool or is taking a break (that is, a standby state).

In this way, by setting the mode to the work mode when the device is held in hand and to the standby mode when it is not held in the hand, control regarding the drive function and the plurality of detection functions can be performed easily and accurately.

(3-7) Motion Detection Function The plurality of detection functions further includes a motion detection function. The motion detection function is a function that detects the movement of the tool body 20.

The hand-held state detection function in this embodiment determines that the device is hand-held when the motion detection function detects movement, and determines that the device is not hand-held when no movement is detected.

As described above, in this embodiment, the movement sensor is built into the tool body 20, and it is determined whether or not the tool body 20 is being held in the hand based on the presence or absence of movement. Even if the item is displayed, it can be determined that the item is held in hand.

In addition, for example, when the force sensor is provided in the grip part 21 of the tool body 20, parts other than the grip part 21 (for example, the battery mounting part 23 or the battery pack 181 mounted on the battery mounting part 23, etc.) When the device is grasped, it becomes difficult to determine whether the device is being held in the hand.

(3-8) Disabling the driving state detection function in standby mode and excluding the handheld state detection function from being disabled In this embodiment, at least one detection function that is excluded from being disabled in standby mode is as follows: Includes handheld status detection function. Further, the one or more detection functions to be disabled in the standby mode include the drive state detection function.

As described above, in this embodiment, the hand-held detection function is excluded from the disabling target in standby mode, and the standby mode is changed to the work mode based on the detection result corresponding to the hand-held detection function. In other words, since it is possible to change from standby mode to work mode without using the detection results corresponding to the drive state detection function, power consumption can be reduced by including the drive state detection function in the target of disabling in standby mode. can be achieved effectively.

(4) Other functions: display function The power tool 10 in this embodiment further includes a display section 17. The display unit 17 can realize a display function. However, the display section 17 may be omitted.

(4-1) Mode display function The display function in this embodiment is, for example, a mode display function. The mode display function is a function that displays the mode as to whether the mode is work mode or standby mode. The mode display is, for example, continuous lighting in the case of work mode and blinking in case of standby mode. Alternatively, the mode display may be lit (enabling the display function to be realized) in the work mode, and may be off (disabling the display function to be realized) in the standby mode.

(4-2) Modification of display function: status display function The display function may be a status display function. The status display function is a function that displays the status of the worker.

As mentioned above, there are three states of a worker: a working state, a work waiting state, and a standby state. The working state corresponds to the case where the tool main body 20 is in the hand-held state and the drive unit 11 is in the driving state, and the work waiting state corresponds to the case where the tool main body 20 is in the hand-held state and the drive unit 11 is in the drive state. Correspondingly, the standby state corresponds to the case where the tool main body 20 is in a non-handheld state and the drive unit 11 is in a non-driving state (see FIG. 6).

The status display is, for example, continuously lit when in the working state, blinking when in the work waiting state, and turned off when in the standby state.

(5) Operation Next, the operation of the power tool 10 will be explained using FIGS. 3 and 4.

(5-1) Mode setting operation The setting unit 14 operates according to the flowchart of FIG. 3, for example. Note that the process of this flowchart (mode setting process) starts when the power tool 10 is powered on, and ends when the power tool 10 is powered off.

When the process starts, the setting unit 14 sets the mode to work mode (step S1). Next, the setting unit 14 determines whether the first state change has been detected by the detection unit 13 (step S2). If it is determined that the first state change has not been detected, the process returns to step S2.

If it is determined that the first state change has been detected, the setting unit 14 sets the mode to work mode (step S3). Next, the setting unit 14 determines whether the second state change has been detected by the detection unit 13 (step S4). If it is determined that the second state change has not been detected yet, the process returns to step S4.

If it is determined in step S4 that the second state change has been detected, the process returns to step S1.

(5-2) Function control operation The function control unit 151 operates according to the flowchart of FIG. 4, for example. Note that the processing in this flowchart starts when the power tool 10 is powered on, and ends when the power tool 10 is powered off.

The function control unit 151 determines whether the mode has changed (step S11). If it is determined that the mode has not changed yet, the process returns to step S11.

If it is determined in step S11 that the mode has changed, the function control unit 151 determines whether the mode is the work mode or not (step S12). If it is determined that the mode is not the work mode (that is, the standby mode), the process proceeds to step S15 (described later).

If it is determined that the mode is the work mode, the function control unit 151 enables realization of the drive function (step S13). Next, the function control unit 151 enables implementation of a plurality of detection functions (step S14). After that, the process returns to step S11.

If it is determined in step S12 that the mode is the work mode, the function control unit 151 disables the driving function (step S15). Next, the function control unit 151 disables the implementation of one or more detection functions other than the first state change detection function among the plurality of detection functions (step S16). After that, the process returns to step S11.

In addition, in step S16, "one or more detection functions other than the first state change detection function among the plurality of detection functions", that is, the one or more detection functions excluded from the disabled target, as shown in FIG. They are a first state detection function and a function other than detection that is used by the first state change detection function.

Note that in the flowchart of FIG. 14, the order of the two steps S13 and S14 may be reversed. Furthermore, the order of the two steps S15 and S16 may be reversed.

(6) Specific Example Next, a specific example of the operation of the tool body 20 will be described using FIGS. 5 to 9.

(6-1) Six detection functions In this example, the detection unit 13 has six detection functions as shown in FIG. It has a detection function, a work state change detection function, and a reception state change detection function.

The hand-held state detection function detects whether the tool main body 20 is hand-held or non-hand-held based on the signal from the movement sensor. The drive state detection function detects whether the drive section 11 is in a drive state or a non-drive state based on a signal from the operation section 12.

The handheld state change detection function detects a state change from a non-handheld state to a handheld state and a state change from a handheld state to a non-handheld state based on the signal from the motion sensor and the most recent state information in the memory. The drive state change detection function detects a state change from a non-drive state to a drive state and a state change from a drive state to a non-drive state based on a signal from the operation unit 12 and the latest state information in the memory.

The work state change detection function detects a change in the state of a predetermined work from an uncompleted state to a completed state based on the signal from the torque sensor and the latest state information in the memory. The reception state change detection function detects a state change from an unreceived state to a received state of an instruction from the external device 30 based on the signal from the communication unit 16 and the latest state information in the memory.

(6-2) Conditions of the tool body and drive section, conditions of the operator, and modes In this example, the conditions of the tool body 20 and the drive section 11 have three combinations as shown in FIG. There are three states: "hand-held and driven state", "hand-held and driven state", and "non-hand-held state and non-driven state".

In addition, the worker's status includes three states as shown in Figure 6: "work execution state" corresponding to "handheld state and driving state", and "work execution state" corresponding to "handheld state and non-driving state". There is a "standby state" corresponding to a "waiting state" and a "non-handheld state and non-driving state".

Furthermore, the modes include two modes as shown in FIG. There are two states: "work mode" corresponding to the "non-handheld state and non-driving state" ("standby state").

(6-3) First example of various functions enabled/disabled in each mode In the work mode, there are three types of functions as shown in Figure 7: communication function, multiple detection function, and display function. , all of which are enabled (become enablement targets). In standby mode, the communication function and the reception status detection function among multiple detection functions are enabled (excluded from being disabled), while other functions among the multiple detection functions (other than the reception status detection function) are enabled. functions) and display functions are disabled.

(6-4) Mode change according to state change (6-4-1) First state change and mode change accordingly The first state change in this example includes two types of state changes as shown in FIG. That is, a state change from an unreceived state to a received state, and a state change from a non-handheld state to a handheld state. When one of these two types of state changes is detected, the mode changes from standby mode to work mode.

(6-4-2) Second state change and corresponding mode change The second state change in this example includes two types of state changes as shown in FIG. 8, namely, a state change from an incomplete state to a completed state. , and a state change from a hand-held state to a non-hand-held state. When one of these two types of state changes is detected, the mode changes from work mode to standby mode.

(6-5) Second example of various functions enabled/disabled in each mode Generally, in work mode, as shown in Figure 9, multiple detection functions and functions other than detection (communication function, display function) etc.), are all possible.

In the standby mode, detection functions other than the first state change detection function among the plurality of detection functions and functions other than detection that are not used by the first state change detection function are disabled. On the other hand, functions other than detection, which are used by the first state change detection function, and the first state change detection function among the plurality of detection functions are enabled (excluded from being disabled).

(7) Summary The power tool (10) according to the first aspect of the present disclosure includes a tool body (20), a drive section (11), a detection section (13), a setting section (14), and a function control section. (151). The tool body (20) can be attached with a tip tool (24) for performing a predetermined work, and can be held by the operator who performs the predetermined work. The drive section (11) is provided in the tool body (20) and is capable of realizing a drive function. The driving function is a function of driving the tip tool (24) attached to the tool body (20). The detection unit (13) is provided in the tool body (20) and can realize a plurality of detection functions. The plurality of detection functions are functions that each detect a state or a change in state related to at least one of the tool body (20) and the drive unit (11). The setting unit (14) uses at least one detection result among the plurality of detection results corresponding to the plurality of detection functions to change the mode related to the drive function and the plurality of detection functions between a work mode and a standby mode. Set it so that it can be changed. When the mode is set to the standby mode, the function control unit (151) disables the realization of the drive function and performs one or more detection functions excluding at least one detection function among the plurality of detection functions. Disabling the realization of a function.

According to this aspect, the detection unit (13) can realize a plurality of detection functions, and the setting unit (14) uses at least one detection result among the plurality of detection results corresponding to the plurality of detection functions. The mode related to the drive function and the plurality of detection functions is set to be changeable between a work mode and a standby mode. Then, when the mode is set to standby mode, the function control unit (151) disables the realization of the drive function and disables the implementation of one or more detection functions except for at least one detection function among the plurality of detection functions. By disabling the realization, it is possible to suppress power consumption. In addition, since at least one detection function has been removed from the list of objects to be disabled in standby mode, it is possible to use that one detection function to enable trigger detection of a change from standby mode to work mode. can. Therefore, it is possible to suppress power consumption while reducing the possibility that it will be difficult to resume work.

In the power tool (10) according to the second aspect, in the first aspect, the function control unit (151) enables realization of the drive function when the mode is set to the work mode, and The plurality of detection functions can be realized.

According to this aspect, when the mode is set to the work mode, the function control unit (151) makes it possible to realize the drive function and also makes it possible to realize a plurality of detection functions, so that the mode is set to the standby mode. After changing from to work mode, it becomes possible to control the drive function using a plurality of detection results corresponding to the plurality of detection functions.

In the power tool (10) according to the third aspect, in the first or second aspect, the plurality of detection functions are configured such that the setting unit (14) changes the mode from the standby mode to the work mode. The at least one detection function includes a first state change detection function that detects a first state change that is a trigger, and the at least one detection function that is excluded from being disabled in the standby mode includes the first state change detection function.

According to this aspect, the plurality of detection functions include a first state change detection function that detects a state change (first state change) that is a trigger (first trigger) for changing from standby mode to work mode. By removing the first state change detection function from the objects to be disabled in standby mode, it is possible to detect a trigger for a change from standby mode to work mode.

In the power tool (10) according to the fourth aspect, in the third aspect, the first state change detection function is configured such that the first state change detection function corresponds to the at least one detection result that the setting unit (14) uses to set the mode. A detection function that is different from any of the three or more detection functions.

According to this aspect, the first state change detection function is a detection function different from the one or more detection functions for mode setting, so that the one or more detection functions for mode setting are disabled in the standby mode. Even if the mode is changed from standby mode to work mode, the trigger can be detected.

The power tool (10) according to the fifth aspect further includes a communication unit (16) capable of realizing a reception function of receiving instructions from the external device (30) in the fourth aspect. A function control unit (151) enables implementation of the receiving function at least when the mode is the standby mode. The first state change detection function is a reception state change detection function that detects a state change from an unreceived state in which the communication unit (16) has not yet received the instruction to a received state in which it has already received the instruction.

According to this aspect, since the first state change detection function is a reception state change detection function, the communication function can be used to enable trigger detection of a change from standby mode to work mode.

In the power tool (10) according to the sixth aspect, in the fifth aspect, the plurality of detection functions serve as a second trigger for the setting unit (14) to change the mode from the work mode to the standby mode. It includes a second state change detection function that detects a second state change. The one or more detection functions to be disabled in the standby mode include the second state change detection function.

According to this aspect, the plurality of detection functions further include a second state change detection function that detects a state change (second state change) that becomes a trigger (second trigger) for changing from work mode to standby mode. This second state change detection function is included in the disabling target in standby mode (that is, the realization of the second state change detection function is disabled in standby mode), thereby reducing power consumption. This can be suppressed.

In the power tool (10) according to a seventh aspect, in the sixth aspect, the second state change detection function changes from an uncompleted state where the predetermined work is not yet completed to a completed state where the predetermined work has already been completed. This is a work status change detection function that detects changes in the status of. The setting unit (14) changes the mode from the work mode to the standby mode when a change in state from the uncompleted state to the completed state is detected by the work state change detection function.

According to this aspect, since the second state change detection function is a work state change detection function, it is possible to change from the work mode to the standby mode in accordance with the completion of the work.

In the power tool (10) according to the eighth aspect, in the first or second aspect, the plurality of detection functions determine whether the tool body (20) is in a hand-held state by the operator or not. Includes a handheld state detection function that detects whether the device is not handheld. The at least one detection result used by the setting unit (14) to set the mode includes a detection result corresponding to the handheld state detection function.

According to this aspect, the plurality of detection functions include a hand-held state detection function that detects whether the hand-held state is a hand-held state or a non-hand-held state, and "at least one detection result" for mode setting is a hand-held state detection function. By including the detection results corresponding to the functions, mode setting can be performed based on the hand-held state of the tool body (20).

In the power tool (10) according to the ninth aspect, in the eighth aspect, when the detection result corresponding to the hand-held state detection function indicates the hand-held state, the setting unit (14) sets the mode to the work mode when the detection result corresponding to the hand-held state detection function indicates the hand-held state. Set to mode. Further, the setting unit (14) sets the mode to the standby mode when the detection result corresponding to the handheld state detection function indicates the non-handheld state.

According to this aspect, the mode is set to the work mode when the device is held in hand and to the standby mode when it is not held in the hand, thereby making it possible to easily and accurately control the drive function and the plurality of detection functions.

In the power tool (10) according to the tenth aspect, in the eighth or ninth aspect, the plurality of detection functions are configured to determine whether the drive unit (11) is in a driving state where it is being driven or a non-driving state where it is not being driven. It further includes a driving state detection function for detecting. The at least one detection result used by the setting unit (14) to set the mode further includes a detection result corresponding to the drive state detection function.

According to this aspect, the plurality of detection functions include a drive state detection function that detects whether the drive state is a drive state or a non-drive state, and "at least one detection result" for mode setting is a drive state detection function. By including the detection results corresponding to the functions, mode setting can be performed based on the hand-held state of the tool body (20).

In the power tool (10) according to an eleventh aspect, in the tenth aspect, the setting unit (14) is configured such that the detection result corresponding to the hand-held state detection function indicates the hand-held state, and the driving state detection function When the corresponding detection result indicates the driving state, or when the detection result corresponding to the hand-held state detection function indicates the hand-held state, and the detection result corresponding to the drive state detection function indicates the non-driving state. Then, the mode is set to the working mode. Further, when the detection result corresponding to the handheld state detection function indicates the non-handheld state and the detection result corresponding to the driving state detection function indicates the non-driving state, the setting unit (14) sets the mode to is set to the standby mode.

According to this aspect, it is possible to set the mode between the work mode and the standby mode based on the detection result corresponding to the hand-held state detection function and the detection result corresponding to the drive state detection function.

In the power tool (10) according to the twelfth aspect, in any one of the eighth to tenth aspects, the plurality of detection functions further includes a motion detection function. The motion detection function is a function that detects the movement of the tool body (20). The hand-held state detection function determines that the hand-held state is present when the detection unit (13) detects the movement, and determines that the hand-held state is determined when the motion is not detected.

According to this aspect, it is determined whether the tool body (20) is in a hand-held state based on the presence or absence of movement, so no matter which part of the tool body (20) is gripped, it can be determined that the tool body (20) is in a hand-held state. can.

In addition, when a force sensor (not shown) is provided in the grip part (21) of the tool body (20), a part other than the grip part (21) (for example, the battery mounting part 23 of the tool body 20 or the battery When the battery pack 181 (such as the battery pack 181 attached to the attachment part 23) is grasped, it becomes difficult to determine whether it is being held in hand.

In the power tool (10) according to a thirteenth aspect, in the eleventh aspect, the at least one detection function that is excluded from being disabled in the standby mode includes the hand-held state detection function. The one or more detection functions to be disabled in the standby mode include the driving state detection function.

According to this aspect, the hand-held detection function is excluded from the disabling target in standby mode, and the change from standby mode to work mode is performed based on the detection result corresponding to the hand-held detection function, so that the hand-held detection function is disabled in standby mode. By including the drive state detection function in the target of optimization, it is possible to effectively suppress power consumption.

10 Power tool 11 Drive section 12 Operation section 13 Detection section 14 Setting section 15 Control section 151 Function control section 16 Communication section 17 Display section 20 Tool main body 24 Tip tool 30 External device

Claims (13)

1. a tool body to which a tip tool for performing a predetermined work can be attached and which can be held in hand by a worker performing the predetermined work;
   a drive unit provided in the tool body and capable of realizing a drive function of driving the tip tool attached to the tool body;
   a detection unit that is provided in the tool body and is capable of realizing a plurality of detection functions that respectively detect states or state changes related to at least one of the tool body and the drive unit;
   A setting in which a mode related to the drive function and the plurality of detection functions can be changed between a work mode and a standby mode using at least one detection result among the plurality of detection results corresponding to the plurality of detection functions. Department and
   A function of disabling the driving function and disabling one or more detection functions other than at least one detection function among the plurality of detection functions when the mode is set to the standby mode. comprising a control unit;
   Electric tool.
2. The function control unit enables realization of the drive function and enables realization of the plurality of detection functions when the mode is set to the work mode.
   The power tool according to claim 1.
3. The plurality of detection functions include a first state change detection function in which the setting unit detects a first state change that is a first trigger for changing the mode from the standby mode to the work mode,
   The at least one detection function that is excluded from being disabled in the standby mode includes the first state change detection function.
   The power tool according to claim 1 or 2.
4. The first state change detection function is a detection function different from any of the one or more detection functions corresponding to the at least one detection result that the setting unit uses to set the mode.
   The power tool according to claim 3.
5. Further comprising a communication unit capable of realizing a reception function for receiving instructions from an external device,
   The function control unit enables implementation of the reception function at least when the mode is the standby mode,
   The first state change detection function is a reception state change detection function that detects a state change from an unreceived state in which the communication unit has not yet received the instruction to a received state in which it has already received the instruction.
   The power tool according to claim 4.
6. The plurality of detection functions include a second state change detection function in which the setting unit detects a second state change that is a second trigger for changing the mode from the work mode to the standby mode,
   The one or more detection functions to be disabled in the standby mode include the second state change detection function,
   The power tool according to claim 5.
7. The second state change detection function is a work state change detection function that detects a state change from an incomplete state where the predetermined work is not yet completed to a completed state where the predetermined work is already completed,
   The setting unit changes the mode from the work mode to the standby mode when a change in state from the uncompleted state to the completed state is detected by the work state change detection function.
   The power tool according to claim 6.
8. The plurality of detection functions include a hand-held state detection function that detects whether the tool body is in a hand-held state in which the tool body is held by the worker or in a non-hand-held state in which it is not held in the hand;
   The at least one detection result used by the setting unit to set the mode includes a detection result corresponding to the handheld state detection function.
   The power tool according to claim 1 or 2.
9. The setting section includes:
   If the detection result corresponding to the handheld state detection function indicates the handheld state, set the mode to the work mode;
   setting the mode to the standby mode when the detection result corresponding to the handheld state detection function indicates the non-handheld state;
   The power tool according to claim 8.
10. The plurality of detection functions further include a drive state detection function that detects whether the drive unit is in a driven state or a non-driven state,
    The at least one detection result used by the setting unit to set the mode further includes a detection result corresponding to the drive state detection function.
    The power tool according to claim 8 or 9.
11. The setting section includes:
    If the detection result corresponding to the hand-held state detection function indicates the hand-held state and the detection result corresponding to the drive state detection function indicates the drive state, or the detection result corresponding to the hand-held state detection function indicates the hand-held state. If the hand-held state is indicated and the detection result corresponding to the drive state detection function indicates the non-drive state, set the mode to the work mode;
    If the detection result corresponding to the handheld state detection function indicates the non-handheld state, and the detection result corresponding to the driving state detection function indicates the non-driving state, setting the mode to the standby mode;
    The power tool according to claim 10.
12. The plurality of detection functions further include a movement detection function that detects movement of the tool body,
    The hand-held state detection function determines the hand-held state when the motion detection function detects the movement, and determines the non-hand-held state when the motion is not detected.
    The power tool according to any one of claims 8 to 10.
13. The at least one detection function that is excluded from being disabled in the standby mode includes the handheld state detection function,
    The one or more detection functions to be disabled in the standby mode include the drive state detection function,
    The power tool according to claim 11.

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