CN115702621A - Electric tool - Google Patents

Abstract

The invention provides an electric tool, which comprises a motor for driving a working unit; a power switch; a switching element including a main switch and an auxiliary switch; a control board configured to start the motor after the power switch, the main switch, and the auxiliary switch are continuously triggered in a predetermined manner; the indicating device sends out an indicating signal; the electric tool at least comprises three operation modes of an inactive mode, an intermediate mode and an active mode, wherein in the inactive mode, the motor stops running; in an activation mode, triggering the main switch, the motor driving the working unit; in the inactive mode, the power tool enters an intermediate mode by triggering a power switch; in the intermediate mode, the indicating device sends an indicating signal to inform an operator to trigger the auxiliary switch to enable the electric tool to enter the activation mode. When the tool is frequently started by a single hand, the tool does not need to be started by pressing a power switch by a thumb, and the operation is more convenient.

Description

Electric tool

Technical Field

The invention belongs to the technical field of garden tools, and particularly relates to an electric tool.

Background

In order to avoid the damage to human body caused by the misoperation when some electric tools, garden tools or gasoline engine tools are used, safety regulations require two actions to turn on the micro-switches on the three tools. Therefore, the three types of tools often use the locking button to lock the switch trigger, and when the tool is started, the locking button needs to be unlocked firstly, and then the switch trigger is pulled to trigger the microswitch so as to start the tool. The lock buttons currently used in the market are as follows: the horizontal push-pull type is adopted, and the locking button is horizontally pushed to unlock during unlocking; the left-right movement type is adopted, and the left side or the right side pushes a locking button to unlock during unlocking; the upper and lower rotary type gasoline engine tool is widely used, and when the gasoline engine tool is unlocked, the upper locking button is firstly pressed down, and then the lower switch trigger is upwards pressed to turn on the switch. The above three methods have disadvantages: when an operator operates the switch, the moving amplitude of fingers is large, in order to ensure the reliability of locking and resetting, the spring force on a locking button and a switch trigger is large, so that the fingers and palms are uncomfortable, and the operation is not in accordance with ergonomics; the number of parts is large, and the cost is high.

For example, single-handed saws are experienced by users who work with one hand at a high elevation, operate the single-handed saw with only one hand and need to grasp the tree trunk with the other hand in order to keep their body stable. This requires that the single-handed saw be easily started and that the grip area of the handle be environmentally comfortable. The single-hand saw needs to avoid a starting mode of one grab, safety devices are needed for products meeting the safety requirements on the market at present, when the single-hand saw is started, the single-hand saw is mostly started by a thumb, inconvenience is brought by the starting of the thumb, the machine on the market at present avoids a grab structure, the electric tool is mostly started by the thumb, the whole machine can be started by three actions, and although the safety requirements can be met, the use comfort degree brought by the structure is not good.

Disclosure of Invention

In order to solve the technical problems, the invention provides an electric tool to solve the problems that the tool operated by one hand in the market is inconvenient to operate after being repeatedly started, the tool can be repeatedly started only by two actions, the operation is inconvenient, and the tool can fall off possibly to cause potential safety hazards.

The invention provides an electric tool, comprising: a motor for driving the working unit; a power switch; a switching element including a main switch and an auxiliary switch; a control board configured to start the motor after the power switch, the main switch, and the auxiliary switch are continuously triggered in a predetermined manner; the indicating device sends out an indicating signal;

the power tool at least comprises three operation modes of an inactive mode, a middle mode and an active mode,

in the inactive mode, the motor stops running;

in the active mode, the main switch is triggered, and the motor drives the working unit;

in the inactive mode, the power tool is brought into the intermediate mode by triggering the power switch; in the intermediate mode, the indicating device sends an indicating signal to inform an operator to trigger the auxiliary switch to enable the electric tool to enter an activation mode.

In one embodiment of the invention, the indication means is at least one of an acoustic, optical or tactile signal indicating that the power tool is in different operating modes.

In one embodiment of the invention, the indicating device is an indicator light, and when the indicator light is turned off, the electric tool is in an inactive mode; when the indicator light is flashing, the power tool is in a neutral mode; when the indicator light is normally on, the power tool is in an active mode.

In one embodiment of the invention, in the active mode, after releasing the main switch, the power tool can be restarted by pressing the main switch again.

In one embodiment of the invention, in the active mode, releasing the main switch and the auxiliary switch requires a renewed pressing of the power switch, the auxiliary switch and the main switch in sequence before the power tool can be restarted.

In one embodiment of the present invention, after the power tool enters the neutral mode from the inactive mode, if the control board does not receive a signal from the main switch or the auxiliary switch within a set time, the power tool enters the inactive mode.

In one embodiment of the invention, in the active mode, the auxiliary switch is released and the power tool enters the inactive mode.

In one embodiment of the invention, the power tool includes a handle on which an auxiliary switch trigger for triggering the auxiliary switch and a switch trigger for triggering the main switch are mounted.

In one embodiment of the invention, the auxiliary switch trigger is used to control the switch trigger, which can only be triggered if the auxiliary switch trigger is in a position to trigger the auxiliary switch.

In one embodiment of the invention, the set time is 3-5 seconds.

In one embodiment of the present invention, the indication device is a speaker, and the speaker plays different sounds when the power tool is in different modes.

In one embodiment of the invention, the indicating device comprises a first indicating lamp and a second indicating lamp, and when the first indicating lamp and the second indicating lamp are both turned off, the electric tool is in an inactive mode; when the first indicator light is turned on and the second indicator light is turned off, the electric tool is in a middle mode; when the first indicator light is turned off and the second indicator light is turned on, the electric tool is in an activation mode.

According to the invention, the electronic auxiliary switch is additionally arranged behind the auxiliary switch trigger, after the switch trigger is switched on during work, the anti-self-locking is not released, the auxiliary switch is still in a closed state, and the control panel detects that the tool is not completely powered off, so that the switch trigger is started again, the tool can be started again, when the tool is frequently started by one hand, the tool does not need to be started by pressing a power switch with a thumb, and the operation is more convenient.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an electric tool according to an embodiment of the present invention.

Fig. 2 is a partial schematic structural diagram of an electric tool according to an embodiment of the invention.

Fig. 3 is a schematic diagram illustrating a position of the power tool without activating any switch according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of an auxiliary switch trigger according to an embodiment of the present invention.

Fig. 5 is a schematic diagram illustrating a position of an auxiliary switch triggered by an electric tool according to an embodiment of the present invention.

Fig. 6 is a schematic diagram illustrating the position of the main switch triggered by the power tool according to an embodiment of the present invention.

Fig. 7 is a schematic diagram illustrating the connection between the control board and the switch according to an embodiment of the invention.

Description of reference numerals:

a housing 10; an auxiliary switch trigger 20; a switch trigger 30; a main switch 40; an auxiliary switch 50; a handle 13; a first housing 11; a second housing 12; a first portion 21; a second portion 22; a torsion spring 23; a through hole 211; a rotating shaft 132; a baffle 212; a barb structure 213; a bump 214; a power switch 60; a working unit 70; a motor 80; a control panel 90; indicating the device 100.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.

It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.

In order to solve the problems that the tool operated by one hand is inconvenient to operate and needs two actions to be repeatedly started, the operation is inconvenient, and the tool may fall off and has a safety hazard in the current market, as shown in fig. 1 to 7, the present invention provides an electric tool, which includes a motor 80 for driving a working unit 70, a power switch 60, switching elements including a main switch 40 and an auxiliary switch 50 for controlling the motor 80, a control board 90, and an indicating device 100; the control board is configured to activate the motor 80 after the power switch 60, the main switch 40 and the auxiliary switch 50 are continuously activated in a predetermined manner; the indicating device 100 sends an indicating signal so that an operator can receive the indicating signal to judge the current mode of the electric tool according to the indicating signal and switch the mode as required, specifically, in this embodiment, the electric tool at least includes three operation modes, namely an inactive mode, an intermediate mode and an active mode, in the inactive mode, the motor 80 stops running, that is, the electric tool is in a stop state; in the active mode, the main switch 40 is triggered so that the motor 80 drives the operating unit 70 to operate; in the inactive mode, the power tool is put into the intermediate mode by triggering the power switch 60, and in the intermediate mode, the indication device 100 sends an indication signal to inform an operator to trigger the auxiliary switch 50 to put the power tool into the active mode.

As shown in fig. 1 to 3 and 7, in this embodiment, specifically, the electric power tool further includes a housing 10, an auxiliary switch trigger 20, and a switch trigger 30, where the housing 10 includes a handle 13, the auxiliary switch trigger 20 and the switch trigger 30 are both installed at the handle 13, the auxiliary switch trigger 20 is located at the top of the handle 13, and the switch trigger 30 is located below the handle 13. The switching elements include a main switch 40 and an auxiliary switch 50, the auxiliary switch trigger 20 is used to activate the auxiliary switch 50, the switch trigger 30 is used to activate the main switch 40, after activating the power switch 60, the power tool enters an intermediate mode, and then the auxiliary switch 50 is activated again so that the power tool enters an active mode, in which the main switch 40 is activated again so that the motor 80 drives the working unit 70 of the power tool.

As shown in fig. 1 to 3 and 7, it should be noted that before the auxiliary switch 50 is triggered to make the electric tool enter the active mode, the power switch 60 must be triggered to make the electric tool enter the intermediate mode.

As shown in fig. 1 to 3 and 7, it should be noted that, when the electric tool enters the activation mode, if only the main switch 40 is turned off and the auxiliary switch 50 is kept in the triggered state, the main switch 40 can be triggered by pressing again to restart the electric tool.

As shown in fig. 1 to 3 and 7, in the active mode, the auxiliary switch 50 is released, the electric tool enters the inactive mode, and when the electric tool enters the active mode, the main switch 40 and the auxiliary switch 50 are turned off, the electric tool enters the inactive mode, and when the electric tool is to be re-enabled to enter the active mode, the power switch 60 and the auxiliary switch 50 need to be sequentially triggered again to enable the electric tool to enter the active mode, so that the electric tool can continue to operate by triggering the main switch 40.

As shown in fig. 1 to 3 and 7, when the electric tool enters the intermediate mode from the inactive mode, if the control board 90 does not receive a signal from the main switch 40 or the auxiliary switch 50 within a set time, the electric tool enters the inactive mode, and the set time is 3 to 5 seconds.

As shown in fig. 1 to 3 and 7, in the present embodiment, the housing 10 includes a first housing 11 and a second housing 12, a receiving cavity is formed between the first housing 11 and the second housing 12, the main switch 40 and the auxiliary switch 50 are both located in the receiving cavity, in the present embodiment, the main switch 40 is triggered by the switch trigger 30, the auxiliary switch 50 is triggered by the auxiliary switch trigger 20, when the auxiliary switch trigger 20 is pressed, the auxiliary switch trigger 20 rotates to trigger the auxiliary switch 50 at its tail, wherein, when the control board detects that the auxiliary switch 50 is in the closed state, the power is not cut off, and the main switch 40 is repeatedly triggered by the switch trigger 30 to repeatedly function as the power tool; when the auxiliary switch trigger 20 is released, the control panel does not detect that the auxiliary switch 50 is closed, and then the power supply is cut off, and the power supply needs to be charged when the auxiliary switch trigger is started. In this embodiment, the handle 13 is integrally formed with the first housing 11 and the second housing 12, a locking member mounting groove is formed at the top of the handle 13, the auxiliary switch trigger 20 is installed in the locking member mounting groove, a trigger mounting groove is formed at the bottom of the handle 13, and the switch trigger 30 is installed in the trigger mounting groove.

As shown in fig. 1 to 4, in the present embodiment, the auxiliary switch trigger 20 includes a first portion 21, a second portion 22, and a torsion spring 23, the first portion 21 being located at the grip area of the handle 13, one end of the second portion 22 being located at one end of the first portion 21, and the other end of the second portion 22 being located within the switch trigger 30.

As shown in fig. 2 to 4, in the present embodiment, the auxiliary switch trigger 20 is used to control the switch trigger 30, and the switch trigger 30 can activate the main switch 50 only when the auxiliary switch trigger 20 is located at a position to activate the auxiliary switch 50.

As shown in fig. 3, 5 and 6, in the present embodiment, the switch trigger 30 is a hollow structure, a cavity is formed in the middle, when the second portion 22 of the auxiliary switch trigger 20 contacts with a bump in the cavity of the switch trigger 30, the switch trigger 30 is locked by the second portion 22, that is, the switch trigger 30 cannot be pushed to trigger the main switch 40; when the auxiliary switch trigger 20 is pressed, the second portion 22 is moved into the cavity of the switch trigger 30 to unlock the switch trigger 30 so that the switch trigger 30 can be pressed to activate the main switch 40 to drive the power tool to operate.

As shown in fig. 3 to 7, in this embodiment, the first portion 21 is provided with one end of the second portion 22 is provided with a through hole 211, the auxiliary switch trigger 20 is installed by rotating the through hole 211 with the rotating shaft 132 in the handle 13, and the rotating shaft 132 is sleeved with a torsion spring 23, one end of the torsion spring 23 is connected with the handle 13, and the other end is connected with the auxiliary switch trigger 20, specifically, in this embodiment, one end of the torsion spring 23 is fixedly connected with the housing 10, and the other end is connected with the first portion 21 of the auxiliary switch trigger 20, when the auxiliary switch trigger 20 is pressed, the torsion spring 23 is compressed, and when the auxiliary switch trigger 20 is loosened, under the elastic action of the torsion spring 23, the auxiliary switch trigger 20 is returned to the original position. In addition, in this embodiment, the circumferential interval of the through hole 211 is provided with a plurality of baffles 212, and the bottom of the first portion 21 is provided with a barb structure 213, and a plurality of the baffles 212 and the barb structure 213 are located on the same side of the auxiliary switch trigger 20, so as to facilitate the installation of the auxiliary switch trigger 20, in this embodiment, the torsion spring 23 is located between a plurality of the baffles 212, so that the torsion spring 23 is better connected with the auxiliary switch trigger 20, and one end of the torsion spring 23 connected with the auxiliary switch trigger 20 is engaged with the barb structure 213, so as to facilitate the torsion spring 23 to be compressed along with the auxiliary switch trigger 20 being pressed into the handle 13 in the process of pressing the auxiliary switch trigger 20, and the torsion spring 23 can better drive the auxiliary switch trigger 20 to reset in the process of resetting the auxiliary switch trigger 20.

As shown in fig. 3 to 7, in the present embodiment, the auxiliary switch 50 is installed in the handle 13 and located at a side close to the auxiliary switch trigger 20 far from the through hole 211, specifically, in the present embodiment, a protrusion 214 is provided at a bottom of the first portion 21 of the auxiliary switch trigger 20 close to one end of the auxiliary switch 50, so that when the auxiliary switch trigger 20 is pressed, the auxiliary switch 50 is triggered by the protrusion 214, and in the process of resetting the reverse member 20, the protrusion 214 plays a role of limiting, that is, the auxiliary switch trigger 20 is prevented from being disengaged from the locking member installation groove due to the elastic force of the torsion spring 23 in the resetting process, and the safety of the structure is ensured.

As shown in fig. 2 and 3, in the present embodiment, after the auxiliary switch trigger 20 completes the triggering operation of the auxiliary switch 50, the auxiliary switch trigger 20 is located inside the handle 13. An auxiliary switch trigger 20 is arranged in the back of the grip area of the handle 13 throughout the grip area, i.e. the handle 13 is gripped by the operator, the auxiliary switch trigger 20 being located in the grip area on the handle 13.

As shown in fig. 3 and 7, in this embodiment, the power tool further includes a control board 90 and a power switch 60, the power switch 60 is disposed at a front end of the top of the handle 13 and is used for connecting a power source, the control board is mounted inside the housing 10, the control board is respectively connected to the power switch 60, the main switch 40 and the auxiliary switch 50, and the control board receives signals of on or off of the power switch 60, the main switch 40 and the auxiliary switch 50, so as to control the start or stop of the power tool according to different signals. In this embodiment, the control board is a PCB.

As shown in fig. 7, in the present embodiment, the three modes of the power tool can be distinguished by the indication signal sent by the indication device 100, and the indication device 100 can be mounted on the housing 10 of the power tool and connected to the control board 90 to send out corresponding indication signals according to the triggering and disconnecting states of the switch elements in the power tool, so that the operator can receive the indication signal sent by the indication device 100 and adjust the mode of the power tool as required. In this embodiment, the indication device 100 is at least one of an acoustic, optical or tactile signal indicating structure for indicating that the power tool is in different operation modes.

In this embodiment, the indicating device 100 is, for example, an indicator light, and when the indicator light is in an off state, it indicates that the electric tool is in a non-active mode, when the indicator light is in a flashing state, it indicates that the electric tool is in an intermediate mode, and when the indicator light is in a normally-on state, it indicates that the electric tool is in an active state. Of course, the indicator light may be set to have different colors when it is turned on, for example, when the indicator light is turned off, the power tool is in the inactive mode, when the indicator light is turned on yellow, the power tool is in the intermediate mode, and when the indicator light is turned on and filtered water, the power tool is in the active mode.

In another embodiment, the indicating device 100 may be further configured to include at least a first indicator light and a second indicator light, and when both the first indicator light and the second indicator light are turned off, the power tool is in an inactive mode; when the first indicator light is turned on and the second indicator light is turned off, the electric tool is in a middle mode; when the first indicator light is turned off and the second indicator light is turned on, the electric tool is in an activation mode. In order to distinguish the first indicator light and the second indicator light more easily, the first indicator light and the second indicator light can be set to two different colors, preferably, the first indicator light is yellow, and the second indicator light is green. Of course, in other embodiments, the indicating device 100 may be configured as other mechanisms to complete the sending of the indicating signal, so that the operator can receive the indicating signal. The indication device may also be configured as a speaker that plays different sounds when the power tool is in different modes.

As shown in fig. 3, 5 and 6, in the present embodiment, the starting process of the electric tool includes firstly pressing the power switch 60, the control board detects a closing signal of the power switch 60, and turns on the power to the control board, and then pressing the auxiliary switch trigger 20, triggering the auxiliary switch 50 under the action of the auxiliary switch trigger 20, so that the auxiliary switch 50 is closed, at which time the indicating device 100 sends an indicating signal (indicating light flashing or yellow light turned on), and the control board detects a closing signal of the auxiliary switch 50, so that the electric tool enters an intermediate mode, at which time, pressing the switch trigger 30, triggering the main switch 40 under the action of the switch trigger 30, at which time the indicating device 100 sends an indicating signal (indicating light constantly turned on or green light turned on), so that the electric tool enters an active mode, so that the power is turned on to the motor 80 of the electric tool, and the electric tool is started to work.

It should be noted that, as long as the control board 90 detects that the auxiliary switch 50 is in the closed state, and the electric tool enters the intermediate mode again after the main switch 40 is released, the main switch 40 can be repeatedly triggered by pressing or releasing the switch trigger 30, so that the electric tool is switched between the intermediate mode and the activation mode to repeatedly start the electric tool, that is, if the tool needs to be stopped for a short time, the tool will stop working to enter the intermediate mode only by releasing the switch trigger 30, and the tool can be started again only by pressing the switch trigger again to start the electric tool again. When the control board does not detect the closing of the auxiliary switch 50, the power is cut off, and at this time, if the power tool needs to be started, the operation is started from the time when the power switch 60 is pressed to turn on the power, that is, if the switch trigger 30 and the auxiliary switch trigger 20 are completely released, the operation is started from the beginning to start the power tool again, so that the power tool can be started to meet the safety requirements.

As shown in fig. 1 and 7, in the present embodiment, a chain saw is taken as an example, the chain saw further includes an operation unit 70 and a motor 80, the motor 80 is installed in the housing 10 and connected to the control board 90, the motor 80 is controlled by the control board 90, the operation unit 70 is installed on the housing 10 and connected to the motor 80, the power switch 60 is first pressed, the control board 90 detects a closing signal of the power switch 60 to turn on power to the control board 90, and then the auxiliary switch trigger 20 is pressed to trigger the auxiliary switch 50 under the action of the auxiliary switch trigger 20 to close the auxiliary switch 50, the control board 90 detects a closing signal of the auxiliary switch 50 to make the chain saw perform a middle mode, the indication device 100 emits an indication signal (an indication lamp blinks or illuminates a yellow lamp), the switch trigger 30 is continuously pressed to trigger the main switch 40 under the action of the switch trigger 30, so that the chain saw enters an activation mode, the indication device 100 emits an indication signal (an indication lamp illuminates normally or illuminates a green lamp) to turn on the power to the motor 80 to drive the operation of the motor 70.

According to the invention, the electronic auxiliary switch is additionally arranged behind the auxiliary switch trigger, after the switch trigger is turned on during work, the auxiliary switch trigger is still in a closed state without being loosened, the control panel detects that the tool is not completely powered off, so that the switch trigger is started again, the tool can be started again, when the tool is frequently started by one hand, the thumb does not need to be pressed to start the tool, and the operation is more convenient.

The above description is only a preferred embodiment of the present application and a description of the applied technical principle, and it should be understood by those skilled in the art that the scope of the present application is not limited to the technical solution of the specific combination of the above technical features, and also covers other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept, for example, the technical solutions formed by mutually replacing the above technical features (but not limited to) having similar functions disclosed in the present application.

Other technical features than those described in the specification are known to those skilled in the art, and are not described herein in detail in order to highlight the innovative features of the present invention.

Claims (12)

1. A power tool, comprising: a motor for driving the working unit; a power switch; a switching element including a main switch and an auxiliary switch; a control board configured to start the motor after the power switch, the main switch, and the auxiliary switch are continuously triggered in a predetermined manner; the indicating device sends out an indicating signal; it is characterized in that the preparation method is characterized in that,

the electric tool at least comprises three operation modes of an inactive mode, a middle mode and an active mode,

in the inactive mode, the motor stops running;

in the active mode, the main switch is triggered, and the motor drives the working unit;

in the inactive mode, the power tool enters the intermediate mode by triggering the power switch; in the intermediate mode, the indicating device sends an indicating signal to inform an operator to trigger the auxiliary switch to enable the electric tool to enter an activation mode.

2. The power tool of claim 1, wherein the indication means is at least one of an acoustic, optical or tactile signal indicating that the power tool is in different modes of operation.

3. The power tool of claim 2, wherein the indicator device is an indicator light, and when the indicator light is off, the power tool is in an inactive mode; when the indicator light flashes, the power tool is in a neutral mode; when the indicator light is normally on, the power tool is in an active mode.

4. A power tool according to claim 3 wherein in the active mode, after release of the main switch, the power tool can be re-started by pressing the main switch again.

5. The power tool of claim 4, wherein in the active mode, releasing the main switch and the auxiliary switch requires a renewed sequential depression of the power switch, the auxiliary switch, and the main switch before the power tool can be restarted.

6. The power tool of claim 1, wherein the power tool enters the inactive mode if the control board does not receive a signal from the main switch or the auxiliary switch within a set time after the power tool enters the intermediate mode from the inactive mode.

7. The power tool of claim 1, wherein in the active mode, the auxiliary switch is released and the power tool enters the inactive mode.

8. The power tool of claim 1, including a handle having an auxiliary switch trigger mounted thereon for actuating the auxiliary switch and a switch trigger for actuating the main switch.

9. The power tool of claim 8, wherein the auxiliary switch trigger is configured to control the switch trigger, the switch trigger being actuatable only when the auxiliary switch trigger is in a position to actuate the auxiliary switch.

10. The power tool of claim 6, wherein the set time is 3-5 seconds.

11. The power tool of claim 1, wherein the indicating device is a speaker that plays different sounds when the power tool is in different modes.

12. The power tool of claim 1, wherein the indicator device includes a first indicator light and a second indicator light, and wherein the power tool is in an inactive mode when both the first indicator light and the second indicator light are off; when the first indicator light is turned on and the second indicator light is turned off, the electric tool is in a middle mode; when the first indicator light is turned off and the second indicator light is turned on, the electric tool is in an activation mode.

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