Electric tool and control method thereof

Abstract

The invention provides an electric tool and a control method thereof. The electric tool comprises a shell; the motor is arranged in the shell; the battery pack is used for providing power for the motor; the working head is driven by a motor to act; the controller is used for controlling the working state of the electric tool; the starting switch is electrically connected with the controller and used for responding to user operation to drive the motor; the electric tool further comprises an adjusting element which is electrically connected with the controller and comprises a closing gear and at least one speed gear. The controller is configured in the mode that when the adjusting element is switched to the closing gear, the electric tool is in a pause state, the starting switch is triggered, and the output rotating speed of the motor is zero. When the adjusting element is switched to the speed gear, the electric tool is in an on state, the starting switch is triggered, and the motor outputs the rotating speed corresponding to the current speed gear. Switching between the pause state and the open state is achieved through the adjusting element, the operation difficulty is reduced, the probability of operation errors is reduced, and use convenience is enhanced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of tools, and in particular to an electric tool and a control method thereof. Background Art

[0002] Power tools use electricity to provide power to help people complete tasks such as rotation, drilling, cutting, etc. They are widely used in various fields of people's lives and bring great convenience to people. When using power tools, users need to switch between multiple working modes such as on and off.

[0003] The electric tools in the prior art have the problems of complicated operation process, inconvenient operation, poor user experience, etc. Summary of the invention

[0004] In view of this, the purpose of the present disclosure is to propose an electric tool and a control method thereof. By setting an adjusting element, the electric tool can be directly switched between an on state and a pause state, and has multiple adjustable speed gears in the on state, which reduces the operating difficulty, reduces the probability of operating errors, and enhances the convenience of use.

[0005] Based on the above-mentioned purpose, the present disclosure provides an electric tool, comprising: a housing; a motor, which is arranged in the housing; a battery pack, which is used to provide power to the motor; a working head, which is driven by the motor to realize action; a controller, which is used to control the working state of the electric tool; a start switch, which is electrically connected to the controller and is used to respond to user operations to drive the motor; the electric tool also includes: an adjusting element, which is electrically connected to the controller, including an off gear and at least one speed gear; the controller is configured such that when the adjusting element is switched to the off gear, the electric tool is in a pause state, the start switch is triggered, and the output speed of the motor is zero; when the adjusting element is switched to the speed gear, the electric tool is in an on state, the start switch is triggered, and the motor outputs the speed corresponding to the current speed gear.

[0006] Optionally, the electric tool further includes: a locking switch. When the electric tool is in the on state, triggering the locking switch can lock the start switch so that the motor continues to output the current speed.

[0007] Optionally, the locking switch is configured as a button.

[0008] Optionally, the electric tool further comprises a locking mechanism responsive to the locking switch, the locking mechanism comprising a first locking member arranged on the starting switch, and a second locking member arranged on the locking switch, the first locking member being used to cooperate with the second locking member to lock the starting switch.

[0009] Optionally, the locking mechanism further includes an elastic element for achieving reset after the locking switch is triggered.

[0010] Optionally, the controller is configured to, when the regulating element is switched to a speed gear, drive the motor to output a speed within a speed range corresponding to the current speed gear according to the stroke amount by which the start switch is triggered.

[0011] Optionally, the power tool also includes: a locking switch, when the power tool is in the on state, triggering the locking switch can lock the start switch, and the controller is configured so that when the start switch is locked, the motor continues to output the maximum speed within the speed range corresponding to the current speed gear.

[0012] Optionally, the speed gear further includes an intelligent gear, and the controller is configured so that when the trigger element is switched to the intelligent gear, the electric tool automatically adjusts the rotation speed of the motor based on the workload.

[0013] The present disclosure also provides a control method for an electric tool, which is applied to the above-mentioned electric tool, including: triggering a start switch, the start switch sending a start signal to a controller; the controller receives the start signal and determines the gear position of the adjusting element; the controller sends a corresponding speed signal to the motor based on the gear position of the adjusting element, and the motor outputs a corresponding speed based on the speed signal; if the gear position of the adjusting element is a closed gear, the controller sends a signal with a zero speed to the motor; if the gear position of the adjusting element is a speed gear, the controller sends a speed signal corresponding to the current speed gear to the motor.

[0014] Optionally, the step of determining the gear position of the adjusting element includes: a controller detecting a first parameter value of the adjusting element to determine the gear position of the adjusting element.

[0015] Optionally, the controller detects a first parameter value of the adjusting element and determines the gear position of the adjusting element, comprising: the controller controls the first parameter value to be within a predetermined range, the predetermined range is divided into multiple parameter intervals, the controller determines that the first parameter value is within a target parameter interval that is one of the multiple parameter intervals, and the controller determines the gear position of the adjusting element based on the target parameter interval.

[0016] Optionally, the first parameter value includes a voltage value.

[0017] Optionally, it also includes: if the gear position of the adjusting element is a speed gear position, the controller determines the second parameter value of the start switch according to the stroke amount of the start switch being triggered, and the controller sends a speed signal corresponding to the current speed gear position to the motor based on the second parameter value of the start switch.

[0018] From the above, it can be seen that the electric tool provided by the present invention switches between an on state and an off state by setting an adjusting element, and has a plurality of adjustable speed gears in the on state to meet the operational requirements of electric work. When the gear is in the off state, even if the start switch is triggered, the output speed of the motor remains zero, thereby enhancing the stability of the motor's zero speed state, avoiding waste of electricity, reducing the difficulty of use, and increasing convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present disclosure or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 is a schematic diagram of an electric tool according to an embodiment of the present disclosure;

[0021] Figure 2 is a side view of the electric tool according to an embodiment of the present disclosure;

[0022] Figure 3 For the embodiment of the present disclosure Figure 2 Cross-sectional view at AA in the middle;

[0023] Figure 4 One of the schematic diagrams of the locking element and the trigger of the embodiment of the present disclosure;

[0024] Figure 5 is one of the schematic diagrams of the locking element and the trigger of the embodiment of the present disclosure;

[0025] Figure 6 is one of the schematic diagrams of the locking element of the embodiment of the present disclosure;

[0026] Figure 7 This is one of the schematic diagrams of the locking element according to the embodiment of the present disclosure;

[0027] Figure 8 is a flow chart of a method for controlling an electric tool according to an embodiment of the present disclosure;

[0028] Fig. 9 The present invention discloses a flow chart of a method for controlling an electric tool according to a specific embodiment of the present invention.

[0029] Reference numerals:

[0030] 10. Electric tool; 100. Adjusting element; 200. Locking switch; 210. Push button; 300. Start switch; 400. Locking mechanism; 410. First locking piece; 411. Groove; 412. Baffle; 420. Second locking piece; 421. Limiting block; 422. Axle pin; 430. Elastic element. DETAILED DESCRIPTION

[0031] In order to make the objectives, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0032] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the embodiments of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0033] According to market usage feedback, in the prior art, multiple buttons are provided on the power tool to switch the working mode, thereby meeting the user's usage needs, but the button operation process is cumbersome, the operation is inconvenient, and the user experience is poor.

[0034] See also Figures 1 to 3 An electric tool 10 is provided in one embodiment of the present disclosure, and the electric tool 10 includes a housing, a motor, a battery pack, a working head, a controller and a starting switch 300, wherein the motor is located in the housing, the battery pack provides power to the motor, the motor drives the working head to perform working actions, the controller is used to control the working state of the electric tool 10, and the starting switch 300 is electrically connected to the controller for responding to user operations to drive the motor.

[0035] The working mode of the electric tool 10 is: first, power is supplied to the motor. The power supply mode of the motor can be to plug in a battery pack or to trigger a start switch, etc. The present application does not impose any restrictions on this. The start switch 300 drives the motor according to the user's operation, and the motor drives the working head to move at an output speed. The various working states of the electric tool 10 include various modes of motor output speed.

[0036] In one embodiment of the present disclosure, the power tool 10 also includes an adjusting element 100, which is electrically connected to the controller and includes an off gear and at least one speed gear; the controller is configured such that when the adjusting element 100 is switched to the off gear, the power tool 10 is in a pause state, the start switch 300 is triggered, and the output speed of the motor is zero; when the adjusting element 100 is switched to the speed gear, the power tool 10 is in an on state, the start switch 300 is triggered, and the motor outputs the speed corresponding to the current speed gear.

[0037] After the electric tool 10 is started, the battery pack continues to supply power to the motor. The electric tool has a pause state and an on state. In the pause state, the motor speed is zero. In the on state, the motor has a certain speed. Its working state is controlled by the adjustment element 100 and the controller. The gear information on the adjustment element 100 is transmitted to the controller. When the adjustment element 100 is adjusted to a certain gear, the controller can obtain the gear information and control the output speed of the motor according to the gear information. The gear of the adjustment element 100 includes a closed gear and at least one speed gear. When the adjustment element 100 is adjusted to the closed gear, the electric tool 10 enters the pause state. The closed gear corresponds to the output speed of the motor being zero. In this state, the output speed of the motor is controlled by the controller. Therefore, whether the switch is turned on or off in the pause state, the speed of the motor is kept at zero speed under the control of the controller. When the adjustment element 100 is adjusted to the speed gear, the electric tool 10 enters the on state. After the start switch 300 is triggered, the motor outputs the speed corresponding to the speed gear adjusted by the adjustment element 100.

[0038] The speed adjustment in the pause state and the start state is controlled by the adjustment element 100 at the same time, which can effectively reduce the user's operation steps. In addition, when the adjustment element 100 is in the off position, even if the start switch 300 is accidentally touched, the motor still stops and the output speed is zero, avoiding accidental touch and start, improving the stability of the motor when it stops, and effectively protecting the battery pack from over-discharge due to false triggering.

[0039] Optionally, the regulating element is configured as a knob, and the knob may be configured as a sliding transformer or a sliding resistor, etc.

[0040] In one embodiment of the present disclosure, Figure 4 As shown, the electric tool 10 further includes a locking switch 200. When the electric tool 10 is in the on state, triggering the locking switch 200 can lock the start switch 300, so that the motor continues to output the current rotation speed.

[0041] The electric tool 10 also has a locked-on state when in the on state. The specific output speed of the motor of the electric tool 10 in the on state is controlled by the starting switch 300. The starting switch 300 can be triggered in response to user operation, and the output speed of the motor changes with the triggering action of the starting switch 300. The locking switch 200 is used to lock the starting switch 300 to limit the starting switch 300, thereby limiting the change in the output speed of the motor and maintaining the output speed of the motor continuously at the current value.

[0042] When the start switch 300 is not locked, the start switch 300 is controlled by the user's operation, and continuous monitoring or continuous operation by the user is required to maintain the output speed. Using the locking switch 200 to lock the start switch 300 can simplify the user's operating difficulty, avoid customer operating errors, and increase the stability of the power tool 10 to maintain the current value.

[0043] In this embodiment, the electric tool 10 has three working states, namely, a pause state, an on state and a locked on state. The adjusting element 100 is provided with a plurality of gears. When the adjusting element 100 is in the off gear, the output speed of the motor is zero, that is, the electric tool 10 is in the pause state. At this time, the working head does not work, and triggering the starting switch 300 in the pause state cannot make the motor rotate; when the adjusting element 100 is adjusted to the speed gear, the motor rotates, and the motor works at the corresponding speed of the corresponding gear of the adjusting element 100; in addition, the on state and the locked on state are switched by the locking switch 200. In the on state, the speed of the motor changes with the activity of the starting switch 300. After the locking switch 200 is triggered, the electric tool 10 enters the locked on state from the on state; in the locked on state, the activity of the starting switch 300 is restricted, and the speed of the motor cannot change with the starting switch 300, and is maintained at a fixed value until the starting switch 300 is triggered again, so that the electric tool 10 exits from the locked on state to the on state.

[0044] In one embodiment of the present disclosure, the controller is configured to, when the regulating element 100 is switched to a speed gear, drive the motor to output a speed within a speed range corresponding to the current speed gear according to the stroke amount of the start switch 300 being triggered.

[0045] Each speed gear of the adjustment element 100 corresponds to a speed range, and the activity of the start switch 300 can cause the motor speed to change within the speed range. Therefore, the adjustment range of the start switch 300 corresponds to the speed range of the current speed gear output by the drive motor, and its adjustment amount corresponds to the trigger stroke amount of the start switch 300. When the trigger stroke amount is larger, the speed of the drive motor in the speed range is larger. In the on state, the user manually controls the stroke amount of the start switch 300 based on operating experience, thereby controlling the output speed of the motor; after the locking switch 200 locks the start switch 300, the position of the locked start switch 300 is fixed so that it is fixed at the current stroke amount to maintain the current speed.

[0046] Furthermore, the start switch 300 is configured as a trigger. In this embodiment, the travel amount of the start switch 300 is the amplitude of pulling the trigger.

[0047] When the user uses the trigger, the user needs to continuously apply force to the trigger to keep the trigger at the speed required by the working condition. Once the force is stopped, the trigger will return to its original position, which is laborious to use. In addition, it is difficult to accurately control the amplitude of the trigger during the user's hand-held operation, which makes the motor speed unstable. Therefore, the trigger is fixed at a specific amplitude by using the locking switch 200 to maintain the motor speed at a fixed value required by the working condition. At this time, the user's force on the trigger does not affect the amplitude of the trigger, and thus does not affect the motor speed. At this time, the user's hand operation does not apply force to the trigger and can maintain the operating speed, reducing the difficulty of operation.

[0048] Optionally, the number of speed gears of the adjusting element 100 can be one or more. When the number of speed gears is one, when the adjusting element 100 is adjusted to the on gear, the start switch 300 can make the motor speed change arbitrarily within the adjustable range. When the number of speed gears is multiple, when the adjusting element 100 is adjusted to the on gear, the start switch 300 can make the motor change arbitrarily within the range of the current speed gear. Alternatively, the start switch 300 only has an on position and a off position. When the adjusting element 100 is adjusted to the speed gear, the start switch 300 controls the on position and the off position of the electric tool 10, and the lock switch 200 locks the position of the start switch 300.

[0049] In one embodiment of the present disclosure, Figures 4 to 7 As shown, the power tool 10 also includes a locking mechanism 400 responsive to the locking switch 200, the locking mechanism 400 includes a first locking member 410 disposed on the starting switch 300, and a second locking member 420 disposed on the locking switch 200, the first locking member 410 is used to cooperate with the second locking member 420 to lock the starting switch 300.

[0050] The first locking piece 410 on the start switch 300 and the second locking piece 420 on the locking switch 200 can cooperate with each other. When the first locking piece 410 and the second locking piece 420 are cooperated and connected, the start switch 300 and the locking switch 200 are relatively fixedly connected to achieve locking; when the first locking piece 410 and the second locking piece 420 are separated, the start switch 300 and the locking switch 200 are separated; the structure of the first locking piece 410 and the second locking piece 420 is convenient for switching between the locked state and the separated state.

[0051] Furthermore, the first locking member 410 is fixed to the main body of the starting switch 300, and the first locking member 410 includes a groove 411, and a baffle 412 is provided on one side of the opening of the groove 411. The second locking member 420 includes an axle pin 422 and a limit block 421, and the limit block 421 is connected to the axle pin 422. In the open state, that is, the first locking member 410 and the second locking member 420 are in the separated state, the limit block 421 moves at the opening of the groove 411 and is misaligned with the baffle 412. During the activity of the starting switch 300, the limit block 421 and the baffle 412 do not interact; moving the locking switch 200 can convert the open state into the locked open state, and the limit block 421 moves with the locking switch 200. The limit block 421 moves to the moving path of the baffle 412 when the starting switch 300 moves, and the limit block 421 abuts against the baffle 412 to limit the movement of the baffle 412, thereby limiting the movement of the starting switch 300.

[0052] In one embodiment of the present disclosure, the locking mechanism 400 further includes an elastic element 430 for achieving reset of the locking switch 200 after being triggered.

[0053] By utilizing the potential energy release of the elastic element 430 , the first locking member 410 and the second locking member 420 are driven to return along the path when they were locked and matched, thereby achieving reset.

[0054] Furthermore, the elastic element 430 is configured as a spring.

[0055] In this embodiment, the direction of the restoring force of the elastic element 430 is the same as the reset direction of the limit block 421. When the locked open state is converted into the open state, the start switch 300 is moved. Under the action of the potential energy of the elastic element 430, the limit block 421 is squeezed out of the groove 411 and returns to the offset position with the baffle 412, so that the first locking member 410 and the second locking member 420 return to the separated state.

[0056] According to the above locking principle, in the on state, the user only needs to move the locking switch 200 to realize the conversion from the on state to the locked on state; in the locked on state, the user triggers the start switch 300 again to complete the conversion from the locked on state to the on state. Each conversion process only requires one operation, which simplifies the operation difficulty of the power tool 10 and improves the convenience of use.

[0057] In one embodiment of the present disclosure, the lock switch 200 is configured as a button 210 .

[0058] Part of the button 210 is exposed to the outside of the shell. When the user presses the button 210, a thrust is applied to the locking switch 200, and the locking switch 200 moves as a whole along the thrust direction. Therefore, the limit block 421 on the second locking member 420 also moves along the thrust direction. The limit block 421 moves from the offset position of the baffle 412 to the projection position of the baffle 412. When the baffle 412 moves toward the limit block 421, the limit block 421 abuts against the baffle 412, limiting the movement of the baffle 412, thereby limiting the movement of the start switch 300.

[0059] The locking switch 200 is configured as a button 210 for easy internal operation. In addition, in the embodiment, when the locking switch 200 cooperates with the first locking member 410 and the second locking member 420 , the locking switch 200 in the form of a button 210 simplifies the internal structure of the power tool 10 .

[0060] Optionally, the locking switch 200 can be set as a dial button, or there is no physical button outside the shell, and the locking process is set in the electronic control system. When the user operates the electronic control system, the locking switch 200 and the start switch 300 are electrically driven to lock.

[0061] In one embodiment, the power tool 10 also includes a locking switch 200. When the power tool 10 is in the on state, triggering the locking switch 200 can lock the start switch 300. The controller is configured such that when the start switch 300 is locked, the motor continuously outputs the maximum speed within the speed range corresponding to the current speed gear.

[0062] In the on state, the start switch 300 is not triggered, and the output speed of the motor is zero. After the start switch is triggered, the minimum speed of the speed range corresponding to the current speed gear is output, and the speed is adjusted within the speed range by triggering the stroke of the start switch 300; after the locking switch 200 is triggered, the start switch 300 is locked, and the power tool 10 enters the locked on state from the on state, and the motor maintains operation at the maximum speed within the speed range corresponding to the current speed gear.

[0063] Furthermore, the locking switch 200 and its second locking member 420 are fixed in position, so when the start switch 300 moves to the maximum stroke, it is locked with the locking switch 200 .

[0064] In another specific embodiment, the rotation speed after the locking switch 200 and the starting switch 300 are locked is electronically controlled by a controller.

[0065] In one embodiment of the present disclosure, the speed gear further includes an intelligent gear, and the controller is configured such that when the regulating element 100 is switched to the intelligent gear, the power tool 10 automatically adjusts the speed of the motor based on the workload.

[0066] When the speed gear is adjusted to the smart gear, the electric tool 10 obtains the data of the workload and adjusts the speed of the motor according to the workload. The speed of the motor changes with the change of the workload.

[0067] Specifically, the smart gear includes a minimum speed. When the power tool 10 is not loaded, the motor idles at the minimum speed.

[0068] In one embodiment of the present disclosure, the power tool 10 is a jigsaw or a reciprocating saw, etc., and the working head is a saw blade or a drill bit, etc.

[0069] In one embodiment of the present disclosure, Figure 8 As shown, a control method of an electric tool is also provided, which is applied to the electric tool in the above embodiment, comprising:

[0070] Step S101, triggering a start switch, and the start switch sends a start signal to the controller;

[0071] Step S102, the controller receives a start signal and determines the gear position of the regulating element;

[0072] Step S103, the controller sends a corresponding speed signal to the motor based on the gear position of the regulating element, and the motor outputs a corresponding speed based on the speed signal;

[0073] Step S104, if the gear position of the regulating element is the closed gear position, the controller sends a signal indicating that the speed is zero to the motor;

[0074] Step S105, if the gear position of the regulating element is a speed gear position, the controller sends a speed signal corresponding to the current speed gear position to the motor.

[0075] First, trigger the start switch to turn on the power tool. The battery pack supplies power to the motor, the motor obtains electrical energy, and the controller obtains the gear information of the regulating element and sends a speed signal to the motor. The gear information and the speed signal have a corresponding relationship, and the corresponding relationship is stored in the controller. The specific corresponding relationship includes a speed signal corresponding to zero speed when the closed gear is obtained. When the controller obtains that the regulating element is in the closed gear, it sends a speed signal of zero speed to the motor. The speed gear corresponds to a speed signal with a certain value. When the controller obtains that the regulating element is in a certain speed gear, it sends a transfer signal of the speed corresponding to the gear to the motor. If the regulating element is adjusted to gear 1, the controller sends a speed signal of 1 corresponding to gear 1 to the motor.

[0076] In one embodiment of the present disclosure, the step of determining the gear position of the adjusting element includes a controller detecting a first parameter value of the adjusting element to determine the gear position of the adjusting element.

[0077] The adjustment element has a closing gear and at least one speed gear, so the adjustment element includes at least two gears, and the gears are distinguished by a first parameter value in the controller. After the detector detects the first parameter value, the first parameter value corresponds to the gear of the adjustment element, and the corresponding gear is the gear that the adjustment element is actually in. By setting the first parameter value, the controller can easily obtain the physical adjustment information of the components of the electronic tool.

[0078] In one embodiment of the present disclosure, a controller detects a first parameter value of an adjusting element, and a step of determining a gear position of the adjusting element includes: the controller controls the first parameter value to be within a predetermined range, the predetermined range is divided into a plurality of parameter intervals, the controller determines that the first parameter value is within a target parameter interval that is one of the plurality of parameter intervals, and the controller determines the gear position of the adjusting element based on the target parameter interval.

[0079] The predetermined range is the optional range of the first parameter value of the electric tool from the minimum to the maximum. The preset range of the electric tool is divided into multiple parameter intervals. The parameter intervals and the gears of the adjusting element correspond one by one. The first parameter value will fall into one of the target parameter intervals, and the corresponding gear of the adjusting element is found according to the target parameter interval in which it falls.

[0080] The first parameter value is an arbitrary value on the adjusting element. When the adjusting element is adjusted to a fixed gear position, the gear position corresponding to the first parameter value is obtained according to the target parameter range of the first reference value.

[0081] In an embodiment of the present disclosure, the first parameter value includes a voltage value.

[0082] The regulating element controls the output speed of the motor by changing the input voltage value of the motor. In a specific embodiment, the regulating element is provided with multiple voltage gears, such as gear 0, gear 1, gear 2, and gear n, and each gear corresponds to a different voltage interval, see Table 1, such as the voltage interval corresponding to gear 0 is 0-10V, the voltage interval corresponding to gear 1 is 10-20V, the voltage interval corresponding to gear 2 is 20-40V, etc. Assuming that the controller detects that the voltage value of the regulating element is 15V at this time, it is judged that the regulating element is in the range of 10-20V at this time, and the corresponding regulating element is in gear 1. Other situations can be deduced by analogy and will not be repeated.

[0083] Table 1 Gear reference table

[0084] Gear 0 1st gear 2nd gear 3rd gear Voltage range 0～10V 10～20V 20～40V 40～60V

[0085] It should be noted that the difference between the maximum and minimum values ​​of the voltage interval corresponding to each gear can be the same or different, depending on the actual situation. For example, a gear can be divided into 10V intervals, or the range of gear 1 can be 10V, the range of gear 2 can be 30V, the range of gear 3 can be 60V, and so on.

[0086] The regulating element can be designed as a sliding transformer.

[0087] In another embodiment, the speed of the motor is directly controlled at the output end of the motor. Any method that can adjust the speed of the motor falls within the protection scope of the present disclosure.

[0088] In one embodiment of the present disclosure, if the gear position of the adjusting element is a speed gear position, the controller determines the second parameter value of the starting switch according to the stroke amount of the starting switch being triggered, and the controller sends a speed signal corresponding to the current speed gear position to the motor based on the second parameter value of the starting switch.

[0089] Each gear position of the adjusting element corresponds to a speed range. The stroke of the starting switch is related to the specific speed within the speed range. The second parameter value of the starting switch is judged according to the stroke amount when the starting switch is triggered. The second parameter value includes the specific voltage value in the gear voltage range or the specific speed value in the motor speed range. The speed signal is sent to the motor according to the voltage value or the speed value.

[0090] In a specific embodiment, when the second parameter value is a speed value: assuming that the current gear is 1st gear, the motor speed corresponding to 1st gear is 100-300r / min, the start switch is triggered, and different stroke amounts correspond to different speeds in the interval. If the stroke amount reaches 50% of the total stroke, then the corresponding speed is 200r / min, and so on.

[0091] In another specific embodiment, when the second parameter value is a voltage value: assuming that the current gear position is 1st gear, the start switch is triggered, different stroke amounts correspond to different voltage values ​​in the interval (although the first parameter value and the second parameter value are both voltage values ​​at this time, the two parts are independently judged and do not interfere with each other), and different voltage values ​​correspond to different speeds. If the starting switch voltage value corresponding to 1st gear ranges from 1-30V, and the stroke amount reaches 50% of the total stroke, then the corresponding voltage value is 15V. When the second parameter value voltage value is 15V, the corresponding speed is 200r / min, and so on.

[0092] In a specific embodiment, if Fig. 9 As shown, a control method of an electric tool is:

[0093] Step S201, triggering a start switch, which sends a start signal to the controller;

[0094] Step S202, the controller receives a start signal;

[0095] Step S203, the controller detects a first parameter value of the regulating element, and the controller controls the first parameter value to be within a predetermined range, where the predetermined range is divided into a plurality of parameter intervals;

[0096] Step S204, the controller determines that the first parameter value is in a target parameter interval of one of the plurality of parameter intervals, and the controller determines the gear position of the regulating element based on the target parameter interval;

[0097] Step S205, if the gear position of the regulating element is closed, the controller sends a signal to the motor that the speed is zero;

[0098] Step S206: If the gear position of the regulating element is a speed gear position, the controller determines the second parameter value of the start switch according to the stroke amount of the start switch being triggered, and the controller sends a speed signal corresponding to the current speed gear position to the motor based on the second parameter value of the start switch.

[0099] Assume that the tool is divided into four gear intervals: 0, 1, 2, and A (in this example, gear A is set as the smart gear), the voltage interval corresponding to gear 0 is 0-10v, the speed interval is 0, the voltage interval corresponding to gear 1 is 10-30v, and the speed interval is 1-200r / min; the others are analogous; the controller detects that the first parameter value is 20v, which is in the range of 10-30v, so it is judged to be in gear 1. The motor speed is adjusted within the speed corresponding to gear 1, 1-200r / min; and then it is judged that the stroke of the start switch is 50% of the total stroke, then the motor speed is 100r / min.

[0100] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples. Based on the concept of the present disclosure, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present disclosure as described above, which are not provided in detail for the sake of simplicity.

[0101] The embodiments of the present disclosure are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present disclosure should be included in the scope of protection of the present disclosure.

Claims

1. An electric tool comprising: case; A motor, wherein the motor is disposed in the housing; A battery pack, used to provide power to the motor; A working head is driven by the motor to realize movement; A controller, used for controlling the working state of the electric tool; A start switch, electrically connected to the controller, for responding to a user operation to drive the motor; Characterized in that the electric tool also includes: An adjusting element, electrically connected to the controller, including a closing gear and at least one speed gear; The controller is configured to, When the adjusting element is switched to the closing position, the electric tool is in a paused state, the start switch is triggered, and the output speed of the motor is zero; When the regulating element is switched to the speed gear, the electric tool is in an on state, a start switch is triggered, and the motor outputs a rotation speed corresponding to the current speed gear.

2. The electric tool according to claim 1, characterized in that: The electric tool further comprises: a locking switch. When the electric tool is in the on state, triggering the locking switch can lock the start switch so that the motor continues to output the current rotation speed.

3. The electric tool according to claim 2, characterized in that: The electric tool also includes a locking mechanism responsive to the locking switch, the locking mechanism including a first locking member disposed on the start switch and a second locking member disposed on the locking switch, the first locking member being used to cooperate with the second locking member to lock the start switch.

4. The electric tool according to claim 1, characterized in that: The controller is configured to, when the regulating element is switched to the speed gear, drive the motor to output a speed within a speed range corresponding to the current speed gear according to the stroke amount by which the start switch is triggered.

5. The electric tool according to claim 4, characterized in that: The electric tool also includes: a locking switch. When the electric tool is in the on state, triggering the locking switch can lock the start switch. The controller is configured so that when the start switch is locked, the motor continues to output the maximum speed within the speed range corresponding to the current speed gear.

6. The electric tool according to claim 1, characterized in that: The speed gear further includes an intelligent gear, and the controller is configured to automatically adjust the rotation speed of the motor based on the workload when the regulating element is switched to the intelligent gear.

7. A control method for an electric tool, applied to the electric tool according to any one of claims 1 to 6, characterized in that: include: Triggering a start switch, wherein the start switch sends a start signal to the controller; The controller receives the start signal and determines the gear position of the adjustment element; The controller sends a corresponding speed signal to the motor based on the gear position of the regulating element, and the motor outputs a corresponding speed based on the speed signal; If the gear position of the regulating element is the closed gear position, the controller sends a signal of zero speed to the motor; If the gear position of the regulating element is a speed gear position, the controller sends a speed signal corresponding to the current speed gear position to the motor.

8. The control method of the electric tool according to claim 7, characterized in that: The step of determining the gear position of the adjusting element comprises: The controller detects a first parameter value of an adjusting element and determines a gear position of the adjusting element.

9. The control method of the electric tool according to claim 8, characterized in that: The controller detects a first parameter value of the regulating element and determines the gear position of the regulating element, including: The controller controls the first parameter value to be within a predetermined range, the predetermined range is divided into multiple parameter intervals, the controller determines that the first parameter value is in a target parameter interval of one of the multiple parameter intervals, and the controller determines the gear position of the adjusting element based on the target parameter interval.

10. The control method of the electric tool according to claim 7, characterized in that: Also includes: If the gear position of the adjusting element is a speed gear position, the controller determines the second parameter value of the start switch according to the stroke amount of the start switch being triggered, and the controller sends a speed signal corresponding to the current speed gear position to the motor based on the second parameter value of the start switch.

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