Electric tool and speed control system for electric tool
By using capacitive touch surfaces and sliders in power tools, precise control of the speed of power tools is achieved, and traditional interface wear and maintenance problems are solved, improving the reliability and service life of the tool.
Patent Information
- Application Number
- CN202420314797.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2023-02-21
- Filing Date
- 2024-02-20
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-02-20
AI Technical Summary
The touch interface of traditional power tools is prone to wear and tear, making it difficult to clean and maintain, resulting in unreliable interface and not long-lasting use, and insufficient control accuracy.
The capacitive touch surface is used as the speed control interface, and the user's sliding touch is detected through the capacitive touch slider, and a setting signal of increasing or decreasing speed is generated, and the current speed setting is indicated through a light emitting diode or an electronic ink display.
Ensure that the interface can still work properly after extensive use, provide more precise speed control, and the touch interface is easy to clean and maintain, extending the service life of the tool.
Smart Images

Figure CN222472396U_ABST
Abstract
Description
[0001] Related Applications
[0002] This application claims the benefit of U.S. Provisional Patent Application No. 63 / 486,067 filed on February 21, 2023, the entire contents of which are hereby incorporated by reference into this application. Technical Field
[0003] The specific implementation method of the utility model relates to the speed control of an electric tool. Background Art
[0004] The touch interface of traditional power tools is easy to wear out during use, and it is also difficult to clean and maintain, resulting in problems of unreliability and short-term use, as well as the defect of imprecise control. The touch interface in the power tool of the present application does not wear out, and the touch sensing surface is easy to clean and maintain, which can ensure that the interface can still work properly even after extensive use, and also allows for more precise control of the speed of the power tool. Utility Model Content
[0005] The power tool described in the utility model includes a housing, a battery pack interface, a user input, a speed control interface and a controller. The battery pack interface is positioned at the end of the housing. The battery pack interface is configured to receive a removable and rechargeable battery pack. The user input is configured to control the drive of the motor when activated by the user. The speed control interface includes a first interface portion and a second interface portion. The first interface portion includes a capacitive touch surface configured to generate a speed setting signal in response to detecting a user touch. The second interface portion includes a display including a plurality of indicators configured to indicate the speed setting of the power tool. The controller includes a memory and an electronic processor. The controller is configured to receive the speed setting signal and control the motor to the speed setting in response to the activation of the user input.
[0006] In some aspects, the first interface portion includes a speed increase selector and a speed decrease selector.
[0007] In some aspects, the capacitive touch surface is configured to receive one or more multi-touch gestures.
[0008] In some aspects, the plurality of indicators includes one or more light emitting diodes.
[0009] In some aspects, the plurality of indicators comprises an electronic ink display.
[0010] In some aspects, the plurality of indicators are further configured to display an error code associated with a tool error.
[0011] In some aspects, the capacitive touch surface includes a capacitive touch slider configured to detect a sliding touch of a user, wherein, in response to detecting a sliding touch of the user in a first direction, the capacitive touch surface is configured to generate a speed increase setting signal, and, wherein, in response to a sliding touch of the user in a second direction, the capacitive touch surface is configured to generate a speed decrease setting signal.
[0012] In some aspects, the speed setting of the power tool includes a plurality of speed settings, and the first interface portion includes a plurality of capacitive touch surfaces, each of the plurality of capacitive touch surfaces includes a capacitive touch input element, and each capacitive touch input element of the plurality of capacitive touch surfaces corresponds to one of the plurality of speed settings.
[0013] The electric tool described in the utility model includes a housing, a battery pack interface, a user input, a speed control interface and a controller. The battery pack interface is positioned at the end of the housing. The battery pack interface is configured to receive a removable and rechargeable battery pack. The user input is configured to control the drive of the motor when activated by the user. The speed control interface is configured to generate a speed setting signal including a speed setting from a plurality of speed settings. The speed control interface includes a speed increase selector configured to increase the speed selection of a speed setting from a plurality of speed settings, a speed decrease selector configured to decrease the speed selection of a speed setting from a plurality of speed settings, and a plurality of indicators configured to indicate the speed setting selected from a plurality of speed settings. The controller includes a memory and an electronic processor. The controller is configured to receive the speed setting signal and, in response to the activation of the user input, control the motor to the speed setting.
[0014] In some aspects, the speed increase selector and the speed decrease selector each include a touch-sensitive surface.
[0015] In some aspects, the plurality of indicators includes one or more light emitting diodes.
[0016] In some aspects, the plurality of indicators comprises an electronic ink display.
[0017] In some aspects, the plurality of indicators are further configured to display an error code associated with a tool error.
[0018] The speed control system described in the utility model includes a speed control interface, which is configured to generate a speed setting signal including a speed setting from a plurality of speed settings. The speed control interface is configured to increase the speed selection of the speed setting from the plurality of speed settings and reduce the speed selection of the speed setting from the plurality of speed settings. The speed control system also includes a plurality of indicators configured to indicate the speed setting selected from the plurality of speed settings, and a circuit board including a memory and an electronic processor. The electronic processor is configured to receive a speed setting signal including a speed setting from the plurality of speed settings, and in response to the activation of the user input, control the motor of the power tool to the speed setting.
[0019] In some aspects, the plurality of indicators includes one or more light emitting diodes.
[0020] In some aspects, the plurality of indicators comprises an electronic ink display.
[0021] In some aspects, the plurality of indicators are further configured to display an error code associated with a tool error.
[0022] In some aspects, the speed control interface includes a speed increase selector and a speed decrease selector, the speed increase selector includes a first capacitive touch element configured to detect a sliding touch of a user, the speed decrease selector includes a second capacitive touch element configured to detect a sliding touch of the user, and, in response to detecting a sliding touch of the user in a first direction, the speed increase selector is configured to generate a speed increase setting signal, and, in response to detecting a sliding touch of the user in a second direction, the speed decrease selector is configured to generate a speed decrease setting signal.
[0023] In some aspects, the speed control interface includes an inductive sensor configured to detect a user touch in a first direction and a user touch in a second direction, the electronic processor configured to increase the speed selection of a speed setting from a plurality of speed settings in response to the inductive sensor detecting the user touch in the first direction, and the electronic processor configured to decrease the speed selection of a speed setting from a plurality of speed settings in response to the inductive sensor detecting the user touch in the second direction.
[0024] In some aspects, the speed increase selector and the speed decrease selector are mechanical buttons.
[0025] The electric tool described in the utility model includes a housing, a battery pack interface, a user input, a speed control interface and a controller. The battery pack interface is positioned at the end of the housing. The battery pack interface is configured to receive a removable and rechargeable battery pack. The user input is configured to control the drive of the motor when activated by the user. The speed control interface is configured to generate a speed setting signal including a speed setting from a plurality of speed settings. The speed control interface includes a speed increase selector configured to increase a speed setting from a plurality of speed selections and a speed decrease selector configured to decrease a speed setting from a plurality of speed selections. The controller includes a memory and an electronic processor. The controller is configured to receive the speed setting signal and, in response to the activation of the user input, control the motor to the speed setting.
[0026] Before explaining any specific embodiment in detail, it should be understood that the specific embodiment is not limited to the construction and component arrangement described in the following description or shown in the accompanying drawings. These specific embodiments can be implemented or executed in various ways. In addition, it should be understood that the words and terms used in the present utility model are for descriptive purposes and should not be regarded as restrictive. The use of "including", "comprising" or "having" and its variations is meant to include the items listed subsequently and their equivalents as well as additional items. Unless otherwise specified or limited, the terms "mounting", "connecting", "supporting" and "coupling" and their variations are used in a broad sense, including direct and indirect mounting, connection, support and coupling.
[0027] Unless the context of their usage clearly indicates otherwise, the articles "a," "an," and "the" should not be construed as meaning "one" or "only one." Instead, these articles should be construed as meaning "at least one" or "one or more." Similarly, when the terms "the" or "said" are used to refer to a noun previously introduced by the indefinite article "a" or "an," "the" and "said" mean "at least one" or "one or more," unless the context of their usage clearly indicates otherwise.
[0028] In addition, it should be understood that specific embodiments may include hardware, software, and electronic components or modules, and for the purpose of discussion, these components may be illustrated and described as if most of the components are implemented only in hardware. However, based on a reading of the detailed description, a person of ordinary skill in the art will recognize that in at least one specific embodiment, the electronic-based aspects may be implemented in software (e.g., stored on a non-transitory computer-readable medium) that can be executed by one or more processing units, such as microprocessors and / or application-specific integrated circuits ("ASICs"). Therefore, it should be noted that specific embodiments may be implemented using a plurality of hardware- and software-based devices and a plurality of different structural components. For example, the "server", "computing device", "controller", "processor", etc. described in the specification may include one or more processing units, one or more computer-readable medium modules, one or more input / output interfaces, and various connectors (e.g., a system bus) connecting the components.
[0029] Relative terms used in connection with quantities or conditions, such as "about", "approximately", "substantially", etc., will be understood by ordinary technicians to include the stated value and have the meaning specified by the context (e.g., the term includes at least the tolerance associated with measurement precision, specific values, etc. [e.g., manufacturing, assembly, use, etc.]). Such terms should also be considered to disclose a range defined by the absolute values of the two endpoints. For example, "from about 2 to about 4" also discloses a range "from 2 to 4". Relative terms can refer to a percentage (e.g., 1%, 5%, 10%) plus or minus a specified value.
[0030] It should be understood that although some drawings show hardware and software located in a specific device, these descriptions are for exemplary purposes only. The functions performed by a component described in the present utility model can be performed by a plurality of components in a distributed manner. The functions performed by a plurality of component assemblies can be merged and performed by a single component assembly. In some specific embodiments, the illustrated component assemblies can be combined or divided into separate software, firmware and / or hardware. For example, logic and processing can be distributed between multiple electronic processors, rather than being located in a single electronic processor and performed by a single electronic processor. Regardless of how they are combined or divided, hardware and software components can be located on the same computing device, or can be distributed between different computing devices connected by one or more networks or other suitable communication links. Similarly, components described as performing specific functions can also perform additional functions not described in the present utility model. For example, a device or structure "configured" in a certain way is configured at least in this way, but can also be configured in a way that is not explicitly listed.
[0031] Accordingly, in a claim, if an apparatus, method or system is claimed, for example, as comprising a controller, a control unit, an electronic processor, a computing device, a logic element, a module, a memory module, a communication channel or network, or other elements configured in some manner, such as to perform multiple functions, then the claim or claim element should be interpreted as referring to one or more such elements, any one of which is configured as claimed to perform any one or more of the multiple functions, so that the one or more elements, as a collection, together perform the multiple functions.
[0032] Other aspects of the embodiments will become apparent by consideration of the detailed description and accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0033] Figure 1A A power tool according to some specific embodiments is shown.
[0034] Figure 1B According to some specific embodiments, Figure 1A A side cutaway view of a power tool.
[0035] Figure 2 According to some specific embodiments, Figure 1A-1B Block diagram of the control system of an electric tool.
[0036] Figure 3 According to some specific embodiments, Figure 1A-1B A battery pack for use with power tools.
[0037] Figure 4 According to some specific embodiments, Figure 3 Block diagram of the control system of the battery pack.
[0038] Figure 5 According to some specific embodiments, Figure 1A-1B Speed control interface for power tools.
[0039] Figure 6 According to some specific embodiments, Figure 1A-1B Speed control interface for power tools.
[0040] Figure 7 According to some specific embodiments, Figure 1A-1B Speed control interface for power tools.
[0041] Figure 8 According to some specific embodiments, Figure 1A-1B Speed control interface for power tools.
[0042] Fig. 9 According to some specific embodiments, Figure 1A-1B Speed control interface for power tools.
[0043] Fig. 10A According to some specific embodiments, Figure 1A-1B Speed control interface for power tools.
[0044] Fig. 10B According to some specific embodiments, Figure 1A-1B Speed control interface for power tools.
[0045] Fig.11 According to some specific embodiments, Figure 1A-1B Speed control interface for power tools.
[0046] Fig.12 According to some specific embodiments, Figure 1A-1B Speed control interface for power tools.
[0047] Fig.13 According to some specific embodiments, Figure 1A-1B Speed control interface for power tools.
[0048] Fig.14 According to some specific embodiments, Figure 1A-1B Speed control interface for power tools.
[0049] Fig.15 According to some specific embodiments, Figure 1A-1B Speed control interface for power tools.
[0050] Fig.16 According to some specific embodiments, Figure 1A-1B Speed control interface for power tools.
[0051] Fig.17 According to some specific embodiments, Figure 1A-1B Speed control interface for power tools.
[0052] Fig.18 A power tool including a speed control interface is shown according to some specific embodiments.
[0053] Fig.19 A power tool including a speed control interface is shown according to some specific embodiments.
[0054] Fig. 20 A power tool including a speed control interface is shown according to some specific embodiments.
[0055] Fig.21 A power tool including a speed control interface is shown according to some specific embodiments.
[0056] Fig. 22 A power tool including a speed control interface is shown according to some specific embodiments. DETAILED DESCRIPTION
[0057] Figure 1A A power tool 100 is shown, such as a portable rotary power tool, which implements several different methods and systems for controlling the tool and the motor of the tool. In some embodiments, the power tool 100 is a grinder or another type of power tool that includes speed control. The power tool 100 may include a main tool housing 120, a first handle 140 extending along the main tool housing 120, and a second handle 105 extending laterally outward from the main tool housing 120. The motor 210 (e.g., Figure 2 The output shaft 125 may be coupled to a tool bracket, which may be configured to receive an accessory 150, such as a cutting tool, a grinding disc, a rotating burr, a grinding disc, etc. Various types of accessories may be interchangeably attached to the tool bracket and may be designed to have different characteristics for different types of operations. For example, the accessory 150 may be made of a material and have a size suitable for performing a specific type of task. The characteristics of the accessory may affect the performance of the power tool 100, or may impose restrictions on the operation of the tool. For example, different accessory types may be configured to operate at different speeds or applied torques, depending on the characteristics of the accessory and the task to be performed. During operation of the power tool 100, the motor and the output shaft 125 may be controlled to rotate at a wide range of speeds. The power tool 100 includes a first user interface portion 110 and a second user interface portion 115. One or both of the first user interface portion 110 and the second user interface portion 115 may be used to control and / or provide feedback related to the operation of the power tool 100. For example, the first user interface portion 110 may include a display or indicator for providing an indication of a set operating speed of the power tool 100. The second user interface portion 115 may include one or more user inputs for selecting or setting the set operating speed of the power tool 100. In some embodiments, one or both of the first user interface portion 110 and the second user interface portion include a display or indicator and one or more user inputs for setting and displaying the set operating speed of the power tool 100. In some embodiments, the power tool 100 includes only one of the first user interface portion or the second user interface portion.
[0058] Due to the large speed range, in some embodiments, the power tool 100 can include a guard 130 to protect the user or another object in the surrounding environment from the different types of accessories that can be attached to the tool bracket. In some embodiments, the guard 130 prevents the user from contacting the accessory 150. In some embodiments, the guard 130 provides protection against, for example, sparks.
[0059] In some embodiments, the first handle 140 may define a battery pack receptacle 145, which is positioned on the end of the first handle 140 opposite the main tool housing 120. The battery pack receptacle 145 (also referred to as a battery pack interface) is configured to selectively, mechanically and electrically connect to a rechargeable battery pack (i.e., a power source) for powering the motor 210. The battery pack may be inserted into or attached to the battery pack receptacle 145. The battery pack may include any of a number of different nominal voltages (e.g., 12V, 18V, 24V, 36V, 40V, 48V, etc.), and may be configured to have any of a number of different chemistries (e.g., lithium ion, nickel cadmium, etc.). In some embodiments, the motor 210 may be powered by a remote power source (e.g., an AC power outlet) via a power cord and a power interface of the power tool 100. The first handle 140 may further include control electronics for the power tool 100.
[0060] Figure 1B A side cross-sectional view of the power tool 100 is shown. In some embodiments, the controller 202 (e.g., located on a printed circuit board) is located within the first handle 140. In some embodiments, the sensor 212 may also be located within the first handle 140. The output shaft 125 projects downwardly toward a potential workpiece. In some embodiments, an accessory 150 (e.g., a grinder blade) may be attached to the output shaft 125. Because the accessory 150, such as a grinder blade, is potentially dangerous to the user and the area surrounding the power tool 100, a guard 130 is also attached to the output shaft 125 and projects downwardly toward the workpiece and extends around the blade 150. This provides protection for the blade 150 and any potential debris generated during operation.
[0061] In some embodiments, the motor 210 is located between the output shaft 125 and the battery pack receptacle 145 and below the user input or trigger 155 within the main tool housing 120. The trigger 155 is used to control the motor 210, which receives control signals from the controller 202 to control the output shaft 125 and other aspects of the power tool 100.
[0062] The first handle 140 includes a switch or trigger 155 operable to electrically connect a power source (e.g., a battery pack) and the motor 210. In some embodiments, the trigger 155 can be a "locking" trigger having a paddle member and a locking member 160 supported by the paddle member. The paddle member is operable to activate a trigger switch 208 electrically connected to the controller 202. The switch 208 is configured to control the selective activation and deactivation of the motor 210 during operation of the power tool 100. The locking member 160 is configured to selectively prevent operation of the paddle member (e.g., prevent activation of the switch 208). In some embodiments, the paddle member acts as a detection of the user's first hand on the first handle 140. In other embodiments, other sensors (e.g., grip sensors, pressure sensors, touch sensors, electromechanical sensors, etc.) are used to detect the user's hand.
[0063] Figure 2 A control system 200 (e.g., a speed control system) for a power tool 100 is shown. The control system 200 includes a controller 202. The controller 202 is electrically and / or communicatively connected to various modules or components of the power tool 100. For example, the controller 202 shown is electrically connected to a motor 204, a battery pack interface 206, a trigger switch 208 (connected to a trigger), one or more sensors or sensing circuits 212, one or more indicators 214, a user input module 216, a power input module 218, an inverter bridge or FET switch module 220 (e.g., including a plurality of switching FETs), and a gate driver 224 for driving the FET switch module 220. In some specific embodiments, the motor 204 is a permanent magnet motor. The controller 202 includes a combination of hardware and software that is operable to control the operation of the power tool 100, monitor the operation of the power tool 100, activate one or more indicators 214 (e.g., LEDs), etc.
[0064] The controller 202 includes a plurality of electrical and electronic components that provide power, operational control, and protection to the components and modules within the controller 202 and / or the power tool 100. For example, the controller 202 includes a processing unit 226 (e.g., a microprocessor, a microcontroller, an electronic controller, an electronic processor, or another suitable programmable device), a memory 228, an input unit 230, and an output unit 232. The processing unit 226 includes, among other things, a control unit 234, an arithmetic logic unit ("ALU") 236, and a plurality of registers 238, and is implemented using a known computer architecture (e.g., a modified Harvard architecture, a von Neumann architecture, etc.). The processing unit 226, the memory 228, the input unit 230, and the output unit 232, as well as the various modules or circuits connected to the controller 202, are connected via one or more control and / or data buses (e.g., a common bus 240). For purposes of illustration, the control and / or data buses are described in detail in detail in the accompanying drawings. Figure 2 In view of the invention described herein, those skilled in the art will know to use one or more control and / or data buses for interconnection and communication between various modules, circuits and components.
[0065] The memory 228 is a non-temporary computer-readable medium and includes, for example, a program storage area and a data storage area. The program storage area and the data storage area may include a combination of different types of memory, such as ROM, RAM (e.g., DRAM, SDRAM, etc.), EEPROM, flash memory, hard disk, SD card, or other suitable magnetic, optical, physical or electronic storage devices. The processing unit 226 is connected to the memory 228 and executes software instructions that can be stored in the RAM of the memory 228 (e.g., during execution), the ROM of the memory 228 (e.g., on a generally permanent basis), or another non-temporary computer-readable medium such as another memory or disk. The software included in the implementation of the power tool 100 can be stored in the memory 228 of the controller 202. The software includes, for example, firmware, one or more application programs, program data, filters, rules, one or more program modules, and other executable instructions. The controller 202 is configured to retrieve and execute instructions related to the control process and method described herein from the memory 228, etc. In other configurations, the controller 202 includes additional, fewer or different components.
[0066] The battery pack interface 206 includes a combination of mechanical components (e.g., rails, grooves, latches, etc.) and electrical components (e.g., one or more terminals) that are configured and operable to interface (e.g., mechanically, electrically, and communicatively connect) with the battery pack. For example, the power provided by the battery pack 300 to the power tool 100 (see Figure 3) is provided to the power input module 218 through the battery pack interface 206. The power input module 218 includes a combination of active and passive components to condition or control the power received from the battery pack 300 before the power is provided to the controller 202. The battery pack interface 206 also provides power to the FET switch module 220 to switch through the switch FET to selectively power the motor 204. The battery pack interface 206 also includes, for example, a communication line 242 for providing a communication line or link between the controller 202 and the battery pack 300.
[0067] The sensor 212 includes one or more current sensors, one or more speed sensors, one or more Hall effect sensors, one or more temperature sensors, etc. The indicator 214 includes, for example, one or more light emitting diodes ("LEDs"). The indicator 214 can be configured to display the condition of the power tool 100 or information associated with the power tool 100. For example, the indicator 214 is configured to indicate the measured electrical characteristics of the power tool 100, the state of the power tool, the state of the motor 204, etc. The user input module 216 is operably coupled to the controller 202 to, for example, select a forward operating mode or a reverse operating mode, a torque and / or speed setting of the power tool 100 (for example, using a torque and / or speed switch), etc. In some specific embodiments, the user input module 216 includes a combination of digital and analog input or output devices required to achieve the desired operating level of the power tool 100, such as one or more knobs, one or more rotary dials, one or more switches, one or more buttons, etc.
[0068] Figure 3 A battery pack 300 is shown. The battery pack 300 includes a housing 302 and an interface portion 304 for connecting the battery pack 300 to a power tool, such as the power tool 100.
[0069] Figure 4 4 shows a control system of the battery pack 300. The control system includes a controller 400. The controller 400 is electrically and / or communicatively connected to various modules or components of the battery pack 300. For example, the illustrated controller 400 is connected to one or more battery cells 402 and an interface 404 (e.g., Figure 3 Controller 400 is also connected to one or more voltage sensors or voltage sensing circuits 406, one or more current sensors or current sensing circuits 408, and one or more temperature sensors or temperature sensing circuits 410. Controller 400 includes a combination of hardware and software that is operable to control the operation of battery pack 300, monitor the status of battery pack 300, enable or disable charging of battery pack 300, enable or disable discharging of battery pack 300, etc.
[0070] The controller 400 includes a plurality of electrical and electronic components that provide power, operational control, and protection to the components and modules within the controller 400 and / or the battery pack 300. For example, the controller 400 includes a processing unit 412 (e.g., a microprocessor, a microcontroller, an electronic processor, an electronic controller, or another suitable programmable device), a memory 414, an input unit 416, and an output unit 418. The processing unit 412 includes, among other things, a control unit 420, an ALU 422, and a plurality of registers 424, and is implemented using a known computer architecture (e.g., a modified Harvard architecture, a von Neumann architecture, etc.). The processing unit 412, the memory 414, the input unit 416, and the output unit 418, as well as the various modules or circuits connected to the controller 400, are connected via one or more control and / or data buses (e.g., a common bus 426). For purposes of illustration, the control and / or data buses are generally as shown in FIG. Figure 4 In view of the invention described herein, those skilled in the art will appreciate the use of one or more control and / or data buses for interconnection and communication between various modules, circuits and components.
[0071] The memory 414 is a non-temporary computer-readable medium and includes, for example, a program storage area and a data storage area. The program storage area and the data storage area may include a combination of different types of memory, such as ROM, RAM (e.g., DRAM, SDRAM, etc.), EEPROM, flash memory, hard disk, SD card or other suitable magnetic, optical, physical or electronic storage devices. The processing unit 412 is connected to the memory 414 and executes software instructions that can be stored in the RAM of the memory 414 (e.g., during execution), the ROM of the memory 414 (e.g., on a generally permanent basis) or another non-temporary computer-readable medium such as another memory or disk. The software included in the implementation of the battery pack 300 can be stored in the memory 414 of the controller 400. The software includes, for example, firmware, one or more applications, program data, filters, rules, one or more program modules and other executable instructions. The controller 400 is configured to retrieve and execute instructions related to the control process and method described in the utility model from the memory 414. In other configurations, the controller 400 includes additional, fewer or different components.
[0072] The interface 404 includes a combination of mechanical components (e.g., tracks, grooves, latches, etc.) and electrical components (e.g., one or more terminals) that are configured and operable to interface (e.g., mechanically, electrically, and communicatively connect) the battery pack 300 with another device (e.g., a power tool, a battery pack charger, etc.). For example, the interface 404 is configured to be communicatively connected to the controller 400 via a communication line 428.
[0073] Figure 5 A speed control interface 500 of the power tool 100 is shown, according to some embodiments. Figure 5 Two views of a speed control interface 500 (also referred to as a rotating dial) are included, a front view 505 and a perspective view 510. The rotating dial 500 includes an interface housing 515 configured to be attached to the power tool 100. In some embodiments, the interface housing 515 is integrally formed with the housing 120 of the power tool 100 (e.g., at the first user interface portion 110 and / or the second user interface portion 115). In other embodiments, the interface housing 515 is configured to be electrically and mechanically coupled to the housing 120 of the power tool 100, rather than being integrally formed. The rotating dial 500 includes a dial portion 520 configured to rotate about a central axis. The dial portion 520 includes a plurality of speed settings 525, each of the plurality of speed settings 525 having a number corresponding to a set speed of the power tool 100. A user of the power tool 100 can select one of the plurality of speed settings 525 to set the maximum operating speed of the power tool 100. Once the user selects one of the speed settings, the controller 202 is configured to control the motor of the power tool 100 at the selected speed. In some embodiments, the speed control interface 500 is implemented on the same printed circuit board as the controller 202 or is electrically connected to a printed circuit board that includes the controller 202.
[0074] Figure 6A speed control interface 600 of a power tool 100 according to some specific embodiments is shown. The speed control interface 600 includes an interface housing 605 and can be configured similarly to the interface housing 515, as described above. The speed control interface 600 includes a first interface portion 610 and a second interface portion 615. In some embodiments, the first interface portion 610 includes an input selector, such as a speed increase selector 620 and a speed decrease selector 625. The speed increase selector 620 is configured to gradually increase the speed setting from a plurality of speed settings of the power tool 100. Similarly, the speed decrease selector 625 is configured to gradually reduce the speed setting from a plurality of speed settings of the power tool 100. Once a speed setting is selected, the speed control interface 600 generates a signal including the speed control setting and sends the signal to the controller 202. The controller 202 then sets the speed of the motor 210 according to the desired speed setting. In some specific embodiments, the speed control interface 600 is implemented on the same printed circuit board as the controller 202, or is electrically connected to a printed circuit board including the controller 202.
[0075] In some embodiments, the increase selector 620 and the speed reduction selector 625 are capacitive touch buttons. A capacitive touch button is a touch-sensitive interface that can detect changes in capacitance caused by a user touching a surface. The increase selector 620 and the speed reduction selector 625 include a touch-sensitive surface. For example, when a user of the power tool 100 interacts with the increase selector 620 or the speed reduction selector 625, the touch-sensitive surface causes a change in capacitance measured by the controller 202, and the controller 202 then processes the data to determine the touch location and the corresponding speed setting. Capacitive touch interfaces have advantages over some other types of interfaces. For example, capacitive touch interfaces do not wear out, making them a more reliable and durable option. In addition, the touch-sensitive surface is easy to clean and maintain, ensuring that the interface still works properly even after heavy use. The capacitive touch interface also allows for more precise control of the speed of the power tool 100 because it can detect a wide range of touch inputs, including multi-touch gestures. In some embodiments, the increase selector 620 and the speed reduction selector 625 are resistive touch buttons, inductive sensor buttons, mechanical buttons, or another type of selector switch.
[0076] The second interface portion 615 includes a plurality of indicators 630 configured to indicate the current speed selection from a plurality of speed settings of the power tool 100. When the user interacts with the increase selector 620 or the speed decrease selector 625, the speed setting of the power tool 100 increases or decreases, and the corresponding speed selection is represented by the plurality of indicators 630. In some specific embodiments, the plurality of indicators 630 is a light emitting diode (LED). In some specific embodiments, the plurality of indicators 630 is an LED bar, a light bar, or any other type of lighting indicator. A single indicator in the plurality of indicators 630 can be illuminated to show the selected speed setting. Alternatively, multiple indicators 630 can be illuminated to show the selected speed setting (e.g., three of four indicators are illuminated to show the third highest of the four speed settings).
[0077] Figure 7 A speed control interface 700 of a power tool 100 according to some embodiments is shown. The speed control interface 700 includes an interface housing 705, similar to the interface housing described above. The speed control interface 700 further includes an interface portion 710, a speed increase selector 715, and a speed decrease selector 720. In the illustrated embodiment, the increase selector 715 and the speed decrease selector 720 are mechanical buttons configured to select a speed setting of the power tool 100 from a plurality of speed settings as described above. In other embodiments, the increase selector 715 and the speed decrease selector 720 are resistive touch buttons, inductive sensor buttons, capacitive sensors, or another type of selector switch. In some embodiments, the speed control interface 700 is implemented on the same printed circuit board as the controller 202, or is electrically connected to a printed circuit board including the controller 202.
[0078] Figure 8A speed control interface of a power tool 100 according to some embodiments is shown. The speed control interface 800 includes an interface housing 805, similar to the interface housing described above. The interface housing 805 includes a capacitive interface portion 810. The capacitive interface portion 810 includes a capacitive touch slider 815. In some embodiments, the capacitive touch slider 815 includes a speed selection portion 820, which includes a speed increase indicator 825 and a speed decrease indicator 830. In some embodiments, the speed selection portion 820 is only a capacitive touch input. In other embodiments, the speed selection portion 820 also includes a display configured to indicate the current speed setting of the power tool 100. For example, a user of the power tool 100 can drag their finger across the speed selection portion 820 to increase (e.g., to the left) or decrease (e.g., to the right) the speed setting of the power tool 100. In some embodiments, the speed selection portion 820 displays the speed setting of the power tool 100 as the user increases or decreases the selected speed (e.g., using a plurality of LEDs). In some embodiments, the speed selection portion 820 continuously displays the speed settings of the power tool 100 (e.g., using any of the indication techniques described herein). In some embodiments, the speed control interface 800 is implemented on the same printed circuit board as the controller 202, or is electrically connected to a printed circuit board that includes the controller 202.
[0079] Fig. 9 A speed control interface of the power tool 100 according to some specific embodiments is shown. The speed control interface 900 includes a circuit board 905 (e.g., a circuit board including the controller 202), and the circuit board 905 includes a capacitive slider element 910. The capacitive slider element 910 includes a plurality of capacitive input elements 915. Each capacitive input element 915 is configured to correspond to a speed setting in a plurality of speed settings of the power tool 100. In some embodiments, the circuit board 905 is similar to the speed selection portion 820 described above. In some specific embodiments, the capacitive input element also corresponds to an LED or another indicator that is illuminated as the capacitive input unit is selected (e.g., the input element 915 itself or a separate LED associated with the input element 915). In some specific embodiments, the speed control interface 900 is implemented on the same printed circuit board as the controller 202, or is electrically connected to a printed circuit board including the controller 202.
[0080] Fig. 10A and Fig. 10B1 shows a speed control interface 1000 of a power tool 100 according to some specific embodiments. The speed control interface 1000 includes a circuit board 1005 (e.g., a circuit board including the controller 202), and the circuit board 1005 includes an inductive sensor element 1010. The inductive sensor element 1010 has an inductive sensor dial 1015. Fig. 10A In the illustrated embodiment, the inductive sensor dial 1015 is configured to increase the speed setting of the motor when the user drags their finger around the dial in a clockwise direction. The inductive sensor dial 1015 is configured to decrease the speed setting of the motor when the user drags their finger around the dial in a counterclockwise direction. In some embodiments, the directions are opposite. For example, when the user drags their finger across the dial in a clockwise direction, the speed setting of the power tool 100 increases to a maximum speed. Once the speed setting of the power tool 100 reaches the maximum setting, subsequent rotation in a clockwise direction will not change the speed setting. Similarly, when the user drags their finger across the dial in a counterclockwise direction, the speed setting of the power tool 100 decreases to a maximum speed. Fig. 10B An alternative embodiment of the speed control interface 1000 is included that has an inductive sensor dial 1020 configured in a semicircular shape. At one end of the inductive sensor dial 1020 is a minimum speed setting 1025 and at the other end is a maximum speed setting 1030. In this embodiment, when a user drags their finger across the dial toward the minimum speed setting 1025, the speed setting of the power tool 100 decreases to the minimum speed. When a user drags their finger across the dial toward the maximum speed setting 1030, the speed setting of the power tool 100 increases to the maximum speed. In some embodiments, the speed control interface 1000 is implemented on the same printed circuit board as the controller 202, or is electrically connected to a printed circuit board that includes the controller 202.
[0081] Fig.11A speed control interface 1100 of a power tool 100 according to some specific embodiments is shown. The speed control interface 1100 includes an interface housing 1105 similar to the aforementioned interface housing. The speed control interface 1100 includes an interface portion 1110. In some embodiments, the interface portion 1110 includes input selectors, such as a speed increase selector 1115 and a speed reduction selector 1120. The speed increase selector 1115 is configured to gradually increase the speed setting from a plurality of speed settings of the power tool 100. Similarly, the speed reduction selector 1120 is configured to gradually reduce the speed setting in a plurality of speed settings of the power tool 100. In some embodiments, the speed increase selector 1115 and the speed reduction selector 1120 are capacitive touch buttons. Once the user selects a speed setting from a plurality of speed settings, the speed control interface 1100 generates a speed setting signal and provides or sends the speed setting signal to the controller 202. Then, the controller 202 sets the speed of the motor 210 according to the selected speed. In some embodiments, the speed increase selector 1115 and the speed decrease selector 1120 are resistive touch buttons, inductive sensor buttons, mechanical buttons, or another type of selector switch. In some embodiments, the speed control interface 1100 is implemented on the same printed circuit board as the controller 202, or is electrically connected to a printed circuit board that includes the controller 202.
[0082] The interface portion 1110 includes a plurality of indicators 1125 configured to indicate a current speed selection selected from a plurality of speed settings of the power tool 100. When a user interacts with the increase selector 1115 or the speed decrease selector 1120, the speed setting of the power tool 100 increases or decreases, and the corresponding speed selection is represented by the plurality of indicators 1125. In some embodiments, the plurality of indicators 1125 is a strip of light emitting diodes (LEDs). In some embodiments, the plurality of indicators 1125 is an LED bar, a light bar, or any other type of illuminated indicator. A single indicator 1125 of the plurality of indicators 1125 can be illuminated to show the selected speed setting. Alternatively, multiple indicators 1125 can be illuminated to show the selected speed setting (e.g., three of four indicators are illuminated to show the third highest of the four speed settings).
[0083] Fig.12The speed control interface 1200 of the power tool 100 according to some specific embodiments is shown. The speed control interface 1100 includes an interface housing 1205, and can be similar to the interface housing described above. The speed control interface 1200 includes an interface portion 1210. In some embodiments, the interface portion 1210 includes a single input selector, such as a button 1215. The button 1215 is configured to gradually set the speed setting from a plurality of speed settings of the power tool 100. In some embodiments, when the user presses the button 1215, the button 1215 provides or sends a signal to the controller 202 of the power tool 100 to gradually increase the speed setting from a plurality of speed settings of the power tool 100. In some specific embodiments, the button 1215 is configured to gradually reduce the speed setting from a plurality of speed settings of the power tool 100. In some cases, the button 1215 has multiple operating modes. For example, the button 1215 can be configured to have a short button press operation and a long button press operation. A short press of button 1215 can gradually increase the speed setting, while a long press of button can gradually reduce the speed setting. Interface portion 1210 includes a plurality of indicators 1220, which are configured to indicate the current speed selected from the plurality of speed settings of power tool 100. As the user interacts with button 1215 and the speed setting of power tool 100 increases or decreases, the corresponding speed selection is represented by a plurality of indicators 1220. Indicator 1220 can be configured as an LED as described above, or as any other type of lighting indicator. A single indicator 1220 in the plurality of indicators 1220 can be illuminated to show the selected speed setting. As an alternative, a plurality of indicators 1220 can also be illuminated to show the selected speed setting (e.g., three of the five indicator lights are on, showing the third highest of the five speed settings). In some specific embodiments, speed control interface 1200 is implemented on the same printed circuit board as controller 202, or is electrically connected to a printed circuit board including controller 202.
[0084] Fig.13The speed control interface 1300 of the power tool 100 according to some specific embodiments is shown. The speed control interface 1300 includes an interface housing 1305, and can be similar to the interface housing described above. The speed control interface 1300 includes an interface portion 1310, which includes an LCD display 1315. The LCD display 1315 is configured to display information about the speed setting of the power tool 100. For example, when the user sets the first speed of the power tool 100, the LCD display 135 displays the set speed. The LCD display 135 can be configured to display other tool information, such as motor revolutions per minute, torque setting, battery life, etc. The display 1315 can also be used in combination with any speed selection input described in the utility model. In some specific embodiments, the speed selection comes from a remote or external device (e.g., a mobile phone). In some specific embodiments, the speed control interface 1300 is implemented on the same printed circuit board as the controller 202, or is electrically connected to a printed circuit board including the controller 202.
[0085] Fig.14 A speed control interface 1400 of a power tool 100 is shown according to some specific embodiments. The speed control interface 1400 includes an interface housing 1305 and can be similar to the interface housing described above. The speed control interface 1400 includes an interface portion 1410, which includes an electronic ink display 1415. The electronic ink display 1415 is configured to display information about the speed setting of the power tool 100, similar to the LCD display 1315 described above. The speed control interface 1400 may include other forms of displays, such as LEDs, organic LEDs (OLEDs), active matrix organic LEDs (AMOLEDs), thin film transistor LCDs (TFTs), quantum dot LEDs (QLEDs), etc. In some specific embodiments, the speed control interface 1400 is implemented on the same printed circuit board as the controller 202, or is electrically connected to a printed circuit board that includes the controller 202.
[0086] Fig.15A speed control interface 1500 of a power tool 100 according to some embodiments is shown. The speed control interface 1500 includes an interface housing 1505 and may be similar to the interface housing described above. The speed control interface 1500 includes an interface portion 1510. In some embodiments, the interface portion 1510 includes a plurality of indicators 1515 configured to indicate a current speed selected from a plurality of speed settings of the power tool 100. As the user increases or decreases the speed setting of the power tool 100, the corresponding speed selection is represented by the plurality of indicators 1515. In some embodiments, the plurality of indicators 1515 is a light emitting diode (LED). In some embodiments, the plurality of indicators 1515 is an LED bar, a light bar, or any other type of lighting indicator. A single indicator 1515 in the plurality of indicators 1515 may be illuminated to show a selected speed setting. Alternatively, a plurality of indicators 1515 may be illuminated to show a selected speed setting (e.g., three of five indicators are illuminated to show the third highest of the five speed settings). In some embodiments, the interface portion 1510 may also be used in conjunction with any of the speed selection inputs described herein. In some embodiments, the speed selection is from a remote or external device (e.g., a mobile phone). In some embodiments, the speed control interface 1500 is implemented on the same printed circuit board as the controller 202, or is electrically connected to a printed circuit board that includes the controller 202.
[0087] Fig.16The speed control interface 1600 of the power tool 100 according to some specific embodiments is shown. The speed control interface 1600 includes an interface housing 1605, and can be similar to the interface housing described above. The speed control interface 1600 includes an interface portion 1610. The interface portion 1610 includes a plurality of indicators 1615, which are configured to indicate the current speed selected from a plurality of speed settings of the power tool 100. In the illustrated specific embodiment, the plurality of indicators 1615 are LED bars. When the user increases or decreases the speed setting of the power tool 100, the corresponding speed selection is represented by the plurality of indicators 1615. A single indicator in the plurality of indicators 1615 can be lit to show the selected speed setting. Alternatively, multiple indicators 1615 can be lit to show the selected speed setting (for example, three of the five indicators are lit to show the third highest of the five speed settings). In some specific embodiments, the interface portion 1610 can also be used in combination with any speed selection input described in the utility model. In some embodiments, the speed selection is from a remote or external device (eg, a mobile phone). In some embodiments, speed control interface 1600 is implemented on the same printed circuit board as controller 202 or is electrically connected to a printed circuit board that includes controller 202 .
[0088] Fig.17 A speed control interface 1700 of a power tool according to some embodiments is shown. The speed control interface 1700 includes an interface housing 1705 and may be similar to the interface housing described above. The speed control interface 1700 includes an interface portion 1710. The interface portion 1710 includes a plurality of indicators 1715, which are configured to indicate the current speed selected from a plurality of speed settings of the power tool 100. In the illustrated embodiment, the plurality of indicators 1715 include a plurality of seven-segment displays. When the user increases or decreases the speed setting of the power tool 100, the corresponding speed selection is represented by the seven-segment display. The plurality of indicators 1715 may indicate other information, such as motor speed, torque setting, or error codes associated with tool errors. In some embodiments, the speed control interface 1700 is implemented on the same printed circuit board as the controller 202, or is electrically connected to a printed circuit board including the controller 202.
[0089] Fig.18A power tool 1800 including a speed control interface is shown according to some embodiments. In some embodiments, the power tool 1800 is a grinder. The power tool 1800 includes some common elements of the power tool 100 described above. For example, the power tool 1800 includes a housing 1805, a battery pack interface 1810, and a speed control interface 1815. In some embodiments, the speed control interface 1815 is a capacitive touch interface, such as the speed control interface 600, the speed control interface 800, or the speed control interface 900. The speed control interface 1815 is located at the second user interface portion 115 of the power tool 100. In other embodiments, the speed control interface 1815 is located at the first user interface portion 110 of the power tool 100 or at another location.
[0090] Fig.19 A power tool 1900 including a speed control interface is shown according to some embodiments. In some embodiments, the power tool 1900 is a grinder. The power tool 1900 includes some common elements of the power tool 100 described above. For example, the power tool 1900 includes a housing 1905, a battery pack interface 1910, and a speed control interface 1915. In some embodiments, the speed control interface 1915 includes an indicator and an increase / decrease input, such as the speed control interface 600 or the speed control interface 1100. The speed control interface 1915 is located at the second user interface portion 115 of the power tool 100. In other embodiments, the speed control interface 1915 is located at the first user interface portion 110 of the power tool 100 or at another location.
[0091] Fig. 20 A power tool 2000 including a speed control interface is shown according to some embodiments. In some embodiments, the power tool 2000 is a grinder. The power tool 2000 includes some common elements of the power tool 100 described above. For example, the power tool 2000 includes a housing 2005, a battery pack interface 2010, and a speed control interface 2015. In some embodiments, the speed control interface 2015 includes an induction wheel, such as the speed control interface 1000. The speed control interface 2015 is located at the second user interface portion 115 of the power tool 100. In other embodiments, the speed control interface 1915 is located at the first user interface portion 110 of the power tool 100 or at another location. In the illustrated embodiment, the speed control interface 2015 includes a second speed control interface or display 2020 located at the first user interface portion 110 of the power tool 100. The second speed control interface is, for example, a speed control interface 1700 including a plurality of seven-segment displays.
[0092] Fig.21A power tool 2100 including a speed control interface is shown according to some embodiments. In some embodiments, the power tool 2100 is a grinder. The power tool 2100 includes some common elements of the power tool 100 described above. For example, the power tool 2100 includes a housing 2105, a battery pack interface 2110, and a speed control interface 2115. In some embodiments, the speed control interface 2115 includes an indicator and an increase / decrease input, such as the speed control interface 600 or the speed control interface 1100. The speed control interface 2115 is located at the first user interface portion 110 of the power tool 100.
[0093] Fig. 22 A power tool 2200 including a speed control interface is shown according to some embodiments. In some embodiments, the power tool 2200 is a grinder. The power tool 2200 includes some common elements of the power tool 100 described above. For example, the power tool 2200 includes a housing 2205, a battery pack interface 2210, and a speed control interface 2215. In some embodiments, the speed control interface 2215 includes an indicator and an increase or decrease input, such as the speed control interface 1200. The speed control interface 2215 is located at the second user interface portion 115 of the power tool 100. In other embodiments, the speed control interface 1915 is located at the first user interface portion 110 of the power tool 100 or at another location.
[0094] Figure 18-22 The power tool of is shown for exemplary purposes. Any combination of speed control interfaces described in the present invention can be used in the power tool and, for example, located at the first user interface portion 110 and / or the second user interface portion 115 of the power tool 100.
[0095] Therefore, the specific embodiments described in the present invention provide a power tool including a speed setting interface for controlling the speed setting of the power tool. Various features and advantages are set forth in the following claims.
Claims
1. An electric tool, characterized in that: include: case; a battery pack interface positioned at an end of the housing, the battery pack interface being configured to receive a removable and rechargeable battery pack; a user input configured to control actuation of the motor when activated by a user; a speed control interface comprising a first interface portion and a second interface portion, the first interface portion comprising a capacitive touch surface configured to generate a speed setting signal in response to detecting a user touch, the second interface portion comprising a display including a plurality of indicators configured to indicate a speed setting of the power tool; and A controller, the controller comprising a memory and an electronic processor, the controller being configured to: receiving the speed setting signal, and In response to activation of the user input, the motor is controlled to the speed setting.
2. The electric tool according to claim 1, characterized in that: The first interface portion includes a speed increase selector and a speed decrease selector.
3. The electric tool according to claim 1, characterized in that: The capacitive touch surface is configured to receive one or more multi-touch gestures.
4. The electric tool according to claim 1, characterized in that: The plurality of indicators include one or more light emitting diodes.
5. The electric tool according to claim 1, characterized in that: The plurality of indicators include an electronic ink display.
6. The electric tool according to claim 1, characterized in that: The plurality of indicators are further configured to display an error code associated with a tool error.
7. The electric tool according to claim 1, characterized in that: The capacitive touch surface includes a capacitive touch slider, and the capacitive touch slider is configured to detect a sliding touch of a user, wherein, in response to detecting a sliding touch of a user in a first direction, the capacitive touch surface is configured to generate a speed increase setting signal, and In response to detecting a sliding touch of a user in a second direction, the capacitive touch surface is configured to generate a speed reduction setting signal.
8. The electric tool according to claim 1, characterized in that: The speed setting of the power tool includes a plurality of speed settings, and the first interface portion includes a plurality of capacitive touch surfaces, wherein each of the plurality of capacitive touch surfaces comprises a capacitive touch input element, and Each of the plurality of capacitive touch input elements of the plurality of capacitive touch surfaces corresponds to one of the plurality of speed settings.
9. An electric tool, characterized in that: include: case; a battery pack interface positioned at an end of the housing, the battery pack interface being configured to receive a removable and rechargeable battery pack; a user input configured to control actuation of the motor when activated by a user; a speed control interface configured to generate a speed setting signal including a speed setting from a plurality of speed settings, the speed control interface including a speed increase selector configured to increase a speed selection from the plurality of speed settings, a speed decrease selector configured to decrease a speed selection from the plurality of speed settings, and a plurality of indicators configured to indicate a speed setting selected from the plurality of speed settings; and A controller, the controller comprising a memory and an electronic processor, the controller being configured to: Receives speed setting signal, and In response to activation of the user input, the motor is controlled to the speed setting.
10. The electric tool according to claim 9, characterized in that: The speed increase selector and the speed decrease selector each include a touch-sensitive surface.
11. The electric tool according to claim 9, characterized in that: The plurality of indicators include one or more light emitting diodes.
12. The electric tool according to claim 9, characterized in that: The plurality of indicators include an electronic ink display.
13. The electric tool according to claim 9, characterized in that: The plurality of indicators are further configured to display an error code associated with a tool error.
14. A speed control system for an electric tool, characterized in that: The speed control system comprises: a speed control interface configured to generate a speed setting signal including a speed setting from a plurality of speed settings, the speed control interface configured to increase a speed selection from a speed setting from the plurality of speed settings and to decrease a speed selection from a speed setting from the plurality of speed settings, a plurality of indicators configured to indicate a speed setting selected from the plurality of speed settings, and A circuit board comprising a memory and an electronic processor, wherein the electronic processor is configured to: receiving a speed setting signal including a speed setting from the plurality of speed settings, and In response to initiation of a user input, a motor of the power tool is controlled to the speed setting.
15. The speed control system according to claim 14, characterized in that: The plurality of indicators include one or more light emitting diodes.
16. The speed control system according to claim 14, characterized in that: The plurality of indicators include an electronic ink display.
17. The speed control system according to claim 14, characterized in that: The plurality of indicators are further configured to display an error code associated with a tool error.
18. The speed control system according to claim 14, characterized in that: The speed control interface includes a speed increase selector and a speed decrease selector; The speed increase selector includes a first capacitive touch element configured to detect a sliding touch of a user; The speed reduction selector includes a second capacitive touch element configured to detect a sliding touch of a user; In response to detecting a sliding touch of a user in a first direction, the speed increase selector is configured to generate a speed increase setting signal; and In response to detecting a sliding touch of a user in a second direction, the speed reduction selector is configured to generate a speed reduction setting signal.
19. The speed control system according to claim 18, characterized in that: The speed increase selector and the speed decrease selector are mechanical buttons.
20. The speed control system according to claim 14, characterized in that: The speed control interface includes an inductive sensor configured to detect a user's touch in a first direction and a user's touch in a second direction; The electronic processor is configured to increase a speed selection of a speed setting from the plurality of speed settings in response to the inductive sensor detecting the user's touch in a first direction; and The electronic processor is configured to reduce a speed selection of speed settings from the plurality of speed settings in response to the inductive sensor detecting the user touch in a second direction.