Chain saw and electric tool

Abstract

The invention provides a chain saw and a cutting tool, and the chain saw comprises a working part which comprises a guide plate and a chain; the main body part comprises a shell; a motor accommodated in the housing; the driving circuit is electrically connected to the motor; a controller accommodated in the housing; the motion detection device is in associated connection with the main body part or the working part, is connected with the controller and is used for detecting the motion variation of the main body part or the working part in at least one direction; the controller is configured to control the motor to enter a braking process when the motion detection device detects that the motion variation of the main body part or the working part in at least one direction exceeds a preset condition; the chain saw is configured to be in communication connection with external equipment; the external device is at least configured for a user to set information related to a preset condition. By the adoption of the technical scheme, the chain saw with the rapid braking function can be provided.

Description

Technical Field

[0001] The present application relates to the field of chain saws and electric tools. Background Art

[0002] A chain saw in the related art usually uses a mechanical brake to stop the saw. However, with the development of technology, the chain speed requirements of the chain saw are getting higher and higher. For chain saws with a chain speed greater than 18m / s, the traditional mechanical brake alone can no longer meet the requirements. In addition, the mechanical brake is limited to the user's self-triggering and cannot automatically brake according to the running state of the chain saw, which reduces the user's operating safety. Therefore, an effective braking method is urgently needed to improve the braking safety of the chain saw.

[0003] This section provides background information related to the present application which is not necessarily prior art. Summary of the invention

[0004] One object of the present application is to solve or at least alleviate part or all of the above problems. To this end, one object of the present application is to provide a chain saw with a rapid braking function, which can improve the braking safety of a high-speed chain saw.

[0005] In order to achieve the above objectives, this application adopts the following technical solutions:

[0006] In some embodiments, the present application provides a chain saw, comprising: a working part, including a guide plate and a chain; a main body, including a shell, and the front end of the main body is configured to be able to install the working part; a motor, accommodated in the shell, the motor outputs power to drive the working part to work; a drive circuit, electrically connected to the motor, for driving the operation of the motor; a controller, accommodated in the shell, the controller is electrically connected to the drive circuit to at least control the operation of the motor; also includes: a motion detection device, associated with the main body or the working part, and connected to the controller, for detecting the change in movement of the main body or the working part in at least one direction; the controller is configured to control the motor to enter a braking process when the motion detection device detects that the change in movement of the main body or the working part in at least one direction exceeds a preset condition; the chain saw is configured to be able to communicate with an external device; the external device is at least configured to allow the user to set information related to the preset condition.

[0007] In some embodiments, the present application also provides a chain saw, comprising: a working part, including a guide plate and a chain; a main body, including a shell, and the front end of the main body is configured to be able to install the working part; a motor, accommodated in the shell, the motor outputs power to drive the working part to work; a drive circuit, electrically connected to the motor, for driving the operation of the motor; a controller, accommodated in the shell, the controller is electrically connected to the drive circuit to at least control the operation of the motor; also includes: a motion detection device, associated with the main body or the working part, and connected to the controller, for detecting the movement change of the main body or the working part in at least one direction; the controller is also configured to control the motor to enter a braking process based on the acquired movement change and a target control program set by an external device.

[0008] In some embodiments, the present application provides an electric tool, comprising: a tool body, including a shell, the front end of the tool body is configured to be able to install a working part; the working part is installed at the front end of the tool body, for realizing the function of the electric tool; a motor is accommodated in the shell, and the motor outputs power to drive the working part to work; a drive circuit is electrically connected to the motor to drive the operation of the motor; a controller is accommodated in the shell, and the controller is electrically connected to the drive circuit to at least control the operation of the motor; a motion detection device is associated with the main body or the working part and connected to the controller, for detecting the change in motion of the main body or the working part in at least one direction; the electric tool is configured to be able to communicate with an external device; the external device is at least configured for user operation to start or turn off the automatic braking mode of the electric tool; in the automatic braking mode, the controller can control the motor to enter a braking process based on the acquired motion change.

[0009] The benefit of the present application lies in that: by associating the motion detection device of the chain saw with the main body or the working part, and connecting it with the controller, the motion detection device is used to detect the amount of motion change of the main body or the working part in at least one direction, and the controller is configured to control the motor to enter the braking process when the motion detection device detects that the amount of motion change of the main body or the working part in at least one direction exceeds the preset condition, so that when the operating state of the chain saw is not within the preset range, the controller can automatically control the motor to enter the braking process, thereby improving the safety performance of the chain saw during use. In addition, the chain saw is configured to be able to communicate with an external device, and the external device is at least configured to allow the user to set information related to the preset conditions, so that the user can set the preset conditions through the external device, adjust the braking timing and braking sensitivity, so that the chain saw is suitable for customers with different requirements and improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A side view of a chain saw provided in an embodiment of the present application;

[0011] Figure 2 A top view of a chain saw provided in an embodiment of the present application;

[0012] Figure 3 A schematic diagram of a display interface of a display device provided in an embodiment of the present application;

[0013] Figure 4 An electric control schematic diagram provided for an embodiment of the present application;

[0014] Figure 5 A schematic diagram of the structure of a guide plate pressing a cover plate from a viewing angle provided in an embodiment of the present application;

[0015] Figure 6 A schematic diagram of the structure of a guide plate pressing a cover plate from another perspective provided in an embodiment of the present application;

[0016] Figure 7 A schematic diagram of a nut anti-lost structure from a viewing angle provided in an embodiment of the present application;

[0017] Figure 8 A structural schematic diagram of a nut anti-loss structure from another perspective provided in an embodiment of the present application. DETAILED DESCRIPTION

[0018] Before any embodiments of the application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the above drawings.

[0019] In this application, the terms "comprises", "includes", "has" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device that includes the element.

[0020] In this application, the term "and / or" is a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects before and after are in an "and / or" relationship.

[0021] In the present application, the terms "connect", "combine", "couple", and "install" may refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, direct connection refers to two parts or components being connected together without the need for an intermediate piece, and indirect connection refers to two parts or components being connected to at least one intermediate piece respectively, and the two parts or components being connected via the intermediate piece. In addition, "connect" and "couple" are not limited to physical or mechanical connections or couplings, and may include electrical connections or couplings.

[0022] In the present application, it will be understood by those of ordinary skill in the art that relative terms (e.g., "about," "approximately," "substantially," etc.) used in conjunction with quantities or conditions include the values ​​and have the meaning indicated by the context. For example, the relative terms include at least the degree of error associated with the measurement of a specific value, the tolerances caused by manufacturing, assembly, and use associated with a specific value, and the like. Such terms should also be considered to disclose a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to plus or minus a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​that do not use relative terms should also be disclosed as specific values ​​with tolerances. In addition, "substantially" may refer to plus or minus a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) on the basis of the indicated angle when expressing a relative angular position relationship (e.g., substantially parallel, substantially perpendicular).

[0023] In this application, it will be understood by those skilled in the art that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0024] In the present application, the terms "upper", "lower", "left", "right", "front", "back" and other directional words are described based on the orientation and positional relationship shown in the accompanying drawings, and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element. It should also be understood that directional words such as upper side, lower side, left side, right side, front side, back side, etc. not only represent the positive orientation, but can also be understood as the lateral orientation. For example, the bottom can include directly below, lower left, lower right, lower front, and lower back, etc.

[0025] In this application, the terms "controller", "processor", "central processing unit", "CPU", and "MCU" are interchangeable. When a unit "controller", "processor", "central processing unit", "CPU", or "MCU" is used to perform a specific function, unless otherwise specified, these functions can be performed by a single unit or multiple units.

[0026] In the present application, the terms “device”, “module” or “unit” may be implemented in the form of hardware or software to achieve specific functions.

[0027] In this application, the terms "calculate", "judge", "control", "determine", "identify", etc. refer to the operations and processes of a computer system or similar electronic computing device (e.g., controller, processor, etc.).

[0028] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] The electric tool may be a handheld electric tool, a walking electric tool, a long-pole electric tool, or a gardening electric tool such as a mower or a pruner. The present application does not limit the type of electric tool. As long as the electric tool can adopt the substantive content of the technical solution disclosed below, it can fall within the protection scope of the present application.

[0030] Figure 1 A side view of a chain saw provided in an embodiment of the present application, Figure 2 A top view of a chain saw provided in an embodiment of the present application, Figure 1 and Figure 2 The specific embodiments of the electric tools in the present application are shown, such as a chain saw. In fact, the present application can be applied to handheld electric tools such as electric drills, electric wrenches, electric screwdrivers, electric hammer drills, electric circular saws, sanders, bench tools such as table saws, and outdoor tools such as lawn mowers, snow blowers, lawn mowers, electric shears, pruning machines, chain saws, pole saws, etc. Obviously, the following embodiments are part of the embodiments of the present application, not all of the embodiments.

[0031] Reference Figure 1 and Figure 2As shown, the chain saw 100 includes a tool body 1 and a power supply device 2, and the power supply device 2 is used to provide energy for the tool body 1. The tool body 1 includes a working part, a main body and a motor; the working part includes a guide plate 11 and a chain 12; the main body includes a shell, and the front end of the main body can be installed with the working part. One end of the guide plate 11 is supported on the shell 13, and the other end extends out of the shell 13 along the longitudinal direction of the shell 13. The guide plate 11 supports and guides the chain 12. The motor is arranged in the accommodating space formed by the shell 13. The power supply device 2 supplies power to the motor so that the motor drives the chain 12 to rotate under the guidance of the guide plate 11 to perform the cutting function. The power supply device 2 includes at least one battery pack 21, and the battery pack 21 is detachably connected to the shell 13, which is convenient for users to replace the battery pack 21 and extend the service life of the chain saw 100.

[0032] In some embodiments, the housing 13 is formed or connected with a handle 14 extending in the front-to-back direction, and the handle 14 is formed with a grip portion 141 for the user to hold. The handle 14 is located behind the battery pack 21 in the front-to-back direction, which is convenient for the user to hold the handle 14 and conforms to the ergonomic design. The front end of the handle 14 is provided with a rear handle operating member 35 for the user to operate. The rear handle operating member 35 is used to control the start and stop of the chain saw 100. The rear handle operating member 35 is reasonably arranged to facilitate the user's operation and improve the user's comfort in operation.

[0033] In some embodiments, the chain saw 100 further includes a display device 34. The display device 34 is at least partially located above the battery pack 21. The display device 34 is mounted on the housing 13, and the display device 34 has at least one display interface for displaying the current state of the chain saw 100, making full use of the space on the housing 13, and the battery pack 21 does not block the display device 34. Specifically, the display device 34 is disposed above the battery pack 21, and the projection of the display device 34 on the bottom plane perpendicular to the plane of the guide plate 11 is at least partially located within the projection of the battery pack 21 on the bottom plane, so as to reduce the size of the chain saw 100 in the front-to-back direction and improve the compactness of the chain saw 100. The display device 34 is disposed in front of the handle 14 in the front-to-back direction. When the user holds the handle 14, the display device 34 is disposed face to face with the user, so that the user can view the display interface of the display device 34.

[0034] Figure 3 A display interface diagram of a display device provided in an embodiment of the present application, with reference to Figure 3As shown, the display interface of the display device 34 is provided with a brake status display area 341, a headlight working status display area 342, a Bluetooth connection status display area 343, a low oil alarm display area 344, a cutting mode display area 345, an oil output display area 346, a cutting load display area 347, an overtemperature icon display area 348 and a power display area 349. Among them, the cutting mode display area 345 has three gears of display, the first gear corresponds to one of the grids being lit, the second gear corresponds to two of the grids being lit, and the third gear corresponds to three of the grids being lit. The cutting load display area 347 is provided with five grids, and the number of grids set can also be greater than five or less than five, which is not specifically limited here. The number of grids that are lit changes at any time with the magnitude of the motor current when the chain saw 100 is cutting.

[0035] In an optional embodiment, the display interface also includes a button indication area, which is used to indicate the working status of the operation button, so that the user can obtain the working status of the operation button through the display interface in real time, which is beneficial for the user to grasp the working status of the chain saw in real time.

[0036] The chain saw 100 also includes a plurality of operating elements for user operation, and the operating elements include at least one operating button for triggering an operation control instruction. The operating button is arranged in a characteristic area of ​​the handle 14, and the characteristic area is an area that can be operated by the user's hand holding the handle 14, so as to facilitate the user's operation. The operating element can at least be operated to adjust the oil output of the chain saw 100 or the lighting state of the chain saw 100. The operating element includes a first operating button 331 and a second operating button 332. Among them, the first operating button 331 is used to control the lighting state of the chain saw 100, that is, to turn on and off the lighting module or adjust the lighting brightness of the lighting module. The second operating button 332 is used to adjust the oil output of the chain saw 100. In actual operation, lightly press the first operating button 331 once, the lighting function of the chain saw 100 is activated, and the brightness is in the maximum state, and the icon of the headlight working state display area 342 is lit. Lightly press the first operating button 331 again to switch the lighting brightness, and the icon display of the headlight working state display area 342 will also change accordingly. Press the first operation button 331 again to turn off the lighting, and the three gears are switched in a cycle.

[0037] The chain saw 100 also has an Internet of Things module 36 , which is configured to at least be able to communicate with an external device to receive or send information related to the chain saw, so that a user can control or understand the status of the tool through the Internet of Things module 36 .

[0038] Specifically, the first operation button 331 also has the function of connecting to Bluetooth. Long pressing the first operation button 331 turns on the Bluetooth pairing function. During the pairing process, the Bluetooth icon in the Bluetooth connection status display area 343 flashes. After the pairing is successful, the Bluetooth icon is always on. When the Bluetooth function is turned off, the Bluetooth icon is not lit. When the Bluetooth icon is always on, the external device can communicate and connect with the tool body 1 or the battery pack 21 via Bluetooth. In some embodiments, the user can maintain and upgrade the program of the tool body 1 by operating the external device. In some embodiments, the communication method between the external device and the tool body 1 and the battery pack 21 is two-way communication; in some embodiments, the relevant working status and alarm information of the battery pack 21 and the tool body 1 and other related data can be uploaded to the external device via Bluetooth for user reference. In some embodiments, the user can control the gear position and other working modes of the chain saw 100 through the external device.

[0039] In an optional embodiment, the display device 34 includes at least one display plane 304, and the projection of the display plane 304 on the first plane 101 at least partially overlaps with the projection of the Internet of Things module 36 on the first plane 101. The first plane 101 is substantially parallel to the display plane 304, and the display plane 304 can be a reference plane of the display device 34; in another optional embodiment, the display interface has a display center P, and at least part of the Internet of Things module 36 is located in a preset spherical area with the display center P of the display interface as the center; the radius of the preset spherical area is greater than or equal to 0 mm and less than or equal to 50 mm.

[0040] The external device 200 may be, but is not limited to, electronic devices with communication functions such as mobile phones, tablet computers, and computers. The information related to the chain saw may be, but is not limited to, the working status of the chain saw, such as the rotation speed of the chain, and the status of the power supply device 2, such as the remaining power and the estimated usage time, and other information that the user needs to obtain. It should be noted that the projection of the display plane 304 on the first plane and the projection of the Internet of Things module 36 on the first plane may overlap completely or partially, so that the operation button for triggering the operation control instruction of the Internet of Things module 36 can be set near the operation button around the display device 34, making the hardware layout more compact, improving the integration of the chain saw, and helping to reduce the size of the chain saw.

[0041] Optionally, the key direction of the operation button is perpendicular or approximately perpendicular to the display plane 304, so that the user can adjust the machine while observing the status of the machine.

[0042] Optionally, a function prompt pattern is provided on the surface of the operation button, and the graphic content of the function prompt pattern is presented in a concave, convex or flat structure, so that the user can know the function of each operation button according to the function prompt pattern on the surface of the operation button, so that the user does not need to check the product manual in real time to quickly know the function of each operation button, which is conducive to helping users quickly and proficiently use the chain saw.

[0043] Optionally, the chainsaw also includes at least one control panel, which is configured to implement at least one of the following: processing information related to the chainsaw, performing operation and protection control on the chainsaw, and controlling the display device 34 to perform display; the Internet of Things module 36 is provided with a UART interface, and the Internet of Things module 36 is connected to the control panel for bidirectional communication via the UART interface.

[0044] Among them, the Universal Asynchronous Receiver / Transmitter (UART) is used to realize a two-way communication connection between the Internet of Things module 36 and the control board. Optionally, the Internet of Things module 36 can also realize a two-way communication connection with the power supply device 2 through the UART interface. Optionally, the Internet of Things module 36 can also realize a two-way communication connection with the control button through the UART interface. Optionally, the main control board and the battery pack 21 can also communicate through the D pin.

[0045] Optionally, the external device 200 is configured to at least set the oil output, lighting, and Bluetooth pairing of the chain saw through the Internet of Things module 36, so that the user can control the oil output (oil output system 38), lighting (lighting system 37), Bluetooth pairing, etc. of the chain saw through the external device 200; optionally, the display interface is provided with a touch area, and the touch area is used to receive touch input instructions, so that the user can operate the chain saw through the touch area of ​​the display interface, making the operation of the chain saw richer, so that the user can choose the operation method of the chain saw according to usage habits.

[0046] In an alternative embodiment, if Figure 4 As shown, the chain saw 100 may also include a drive circuit 21, a controller 22 and a motion detection device 23, wherein the drive circuit 21 is electrically connected to the motor 24 to drive the operation of the motor 24; the controller 22 is accommodated in the housing 13, and the controller 22 is electrically connected to the drive circuit 21 to at least control the operation of the motor 24; the motion detection device 23 is associated with the main body or the working part, and is connected to the controller 22, and is used to detect the movement change of the main body or the working part in at least one direction; the controller 22 is configured to control the motor 24 to enter a braking process when the motion detection device 23 detects that the movement change of the main body or the working part in at least one direction exceeds a preset condition.

[0047] The chain saw is configured to be able to communicate with an external device 200; the external device 200 is at least configured to allow a user to set information related to preset conditions, or the controller 22 is further configured to control the motor to enter a braking process based on the acquired motion change and a target control program set by the external device 200.

[0048] The motion detection device 23 may include, but is not limited to, a gyroscope and / or a linear accelerometer, etc. The preset condition may be a range of motion variation allowed by the main body or working part in at least one direction input by a user through the external device 200 or the display device 34, etc.

[0049] Specifically, the user can set information related to the preset conditions through the external device 200, and the motion detection device 23 can detect the running change amount in at least one direction of the main body or the working part. Therefore, when the controller 22 obtains the preset conditions, if the motion detection device 23 detects that the running change amount of the main body or the working part in at least one direction exceeds the preset conditions, the motor is controlled to enter the braking process, so that when the running state of the chain saw is not within the preset range, the controller can automatically control the motor to enter the braking process, thereby improving the operational safety performance of the chain saw during use.

[0050] In an exemplary embodiment, the preset conditions may include speed preset conditions and angle preset conditions. When the chain saw performs forward cutting, when the speed of the chain saw in the Y direction exceeds the speed preset condition, the controller controls the motor to enter a braking process to stop the chain saw within a specified time. At the same time, when the angle of the chain saw in the Y direction exceeds the angle preset condition, the controller also controls the motor to enter a braking process to stop the chain saw within a specified time. In another optional embodiment, when the chain saw performs sideways cutting, when the speed of the chain saw in the X direction exceeds the speed preset condition, the controller controls the motor to enter a braking process to stop the chain saw within a specified time. At the same time, when the angle of the chain saw in the X direction exceeds the angle preset condition, the controller also controls the motor to enter a braking process to stop the chain saw within a specified time. In another exemplary embodiment, when the user normally releases the rear handle operating member 35, the controller also controls the motor to enter a braking process, or the chain saw enters a normal braking process.

[0051] Optionally, the preset condition is related to the braking sensitivity. The external device 200 is configured to set the braking sensitivity of the braking system 39 of the chain saw 100 by inorganic adjustment. In an optional embodiment, the braking sensitivity satisfies: greater than or equal to 0, and less than or equal to 100%. When the braking sensitivity is 0, it is equivalent to turning off the automatic braking function, so that the user can set the preset condition through the external device 200, adjust the braking timing and braking sensitivity, so that the chain saw is suitable for customers with different requirements and improve the user experience.

[0052] Optionally, the target control program matches the braking sensitivity, and the external device 200 is configured to set the braking sensitivity in a stepless adjustment manner. In an optional embodiment, the braking sensitivity satisfies: greater than or equal to 0, and less than or equal to 100%, so that the user can set preset conditions through the external device 200, adjust the braking timing and braking sensitivity, so that the chain saw is suitable for customers with different requirements and improve the user experience.

[0053] Optionally, the chain saw provided in this embodiment further includes a rear handle operating member 35, and the controller is further configured to obtain a first braking signal triggered by the rear handle operating member 35, and control the motor to enter a braking process according to the first braking signal.

[0054] The first braking signal may be a signal for controlling the motor to enter a braking process triggered by the rear handle operating member 35. In an optional embodiment, the first braking signal is triggered when the rear handle operating member 35 is released.

[0055] Specifically, when the movement change of the main body or working part of the chain saw in at least one direction exceeds a preset change, the rear handle operating member 35 can trigger a first braking signal, so that when the controller obtains the first braking signal, it can control the motor to enter the braking process according to the first braking signal.

[0056] Optionally, the chain saw further includes a front baffle 17, and the controller is further configured to obtain a second braking signal triggered by the front baffle 17, and control the front baffle 17 to perform mechanical braking according to the second braking signal.

[0057] The second brake signal may be a signal for controlling the chain saw to perform mechanical braking, which is triggered by the front baffle 17. Specifically, when the movement variation of the main body or working part of the chain saw in at least one direction exceeds a preset variation, the front baffle 17 may trigger the second brake signal, so that when the controller obtains the second brake signal, it may control the front baffle 17 to perform mechanical braking according to the second brake signal.

[0058] Optionally, the external device 200 is further configured to allow the user to set a brake mode, which includes any one or a combination of automatic brake mode, manual brake mode and mechanical brake mode. In an exemplary embodiment, the user can set the brake mode to a single automatic brake mode through the external device 200, in another exemplary embodiment, the user can set the brake mode to a single manual brake mode through the external device 200, and in another optional embodiment, the user can set the brake mode to a single mechanical brake mode through the external device 200; in another optional embodiment, when the chain speed of the chain saw is greater than 18m / s, the traditional mechanical brake alone may not be able to meet the requirements, so the user can stop the motor in a short time by combining multiple brake modes; for example, the user can also set the brake mode to a combination of automatic brake mode and manual brake mode through the external device 200, or the user can also set the brake mode to a combination of automatic brake mode, manual brake mode and mechanical brake mode through the external device 200, so that the user can independently select the brake mode according to the usage habits.

[0059] In an optional embodiment, the chain saw provided in this embodiment further includes a control device, which is electrically connected to at least the display device 34; the control device is configured to be able to respond to any one of a plurality of preset instructions to light up the display interface.

[0060] The plurality of preset instructions may include, but are not limited to, at least one of a button trigger instruction, a dial trigger instruction, a hardware plug-and-pull trigger instruction, or a remote trigger instruction.

[0061] Specifically, when the control device receives one or more of a button trigger command, a dial trigger command, a hardware plug-in trigger command, or a remote trigger command issued by the user, the control device responds to the triggered command to light up the display interface, so that the user does not need to manually light up the display interface of the display device 34, thereby avoiding the user being distracted by manually lighting up the display interface, thereby improving the safety performance of the chain saw.

[0062] Optionally, the chain saw further comprises an operating member, the operating member comprises at least one of: a button, a dial or a switch, and the control device is configured to respond to a trigger instruction of any one of the operating members.

[0063] In an exemplary embodiment, when the user operates a button, a button triggering instruction is triggered, so that when the user controls the chain saw by operating the button, the control device can respond to the button triggering instruction to light up the display interface.

[0064] Optionally, the display device 34 is configured to be able to communicate with the external device 200; the external device 200 is at least configured to allow the user to light up or turn off the display interface, and generate a remote trigger instruction based on the user operation.

[0065] In an exemplary embodiment, when the user intends to light up the display interface, a remote trigger instruction may be generated by operating the external device 200, so that the control device may respond to the remote trigger instruction to light up the display interface.

[0066] Optionally, the control device is further configured to detect the plug-in connection status of the power supply device 2, and generate a hardware plug-in trigger instruction based on the plug-in connection status, so that the control device can light up the display interface according to the hardware plug-in trigger instruction.

[0067] In an optional embodiment, the display interface has at least a first display brightness and a second display brightness; the control device is configured to respond to any one of at least two preset instructions to control the display interface to switch from the first display brightness to the second display brightness.

[0068] It should be noted that the above-mentioned preset instructions are stored in a storage module inside the tool or on the terminal device. Specifically, the above-mentioned preset instructions are a plurality of pre-set and determined instructions.

[0069] In this embodiment, the first display brightness and the second display brightness can be set according to actual needs. If the first display brightness is set to 0 and the second display brightness is set to 100%, the control device can realize the lighting and closing control of the display interface through brightness switching.

[0070] Optionally, the control device is configured to control the display interface to close when the chain saw is not in operation for a preset time, so that when the user does not need to check the operating status of the chain saw through the display device 34, the display interface is closed, which is beneficial to energy saving and environmental protection and improves the economy of the chain saw.

[0071] The preset time can be the time set by the user according to his / her own needs for closing the display interface when no operation is performed. In an optional embodiment, the display device 34 is configured to set the preset time in a stepless adjustment manner, so that the user can set the preset time to any time according to his / her own needs, which can meet the needs of different users for display duration.

[0072] Optionally, the chain saw further includes a photosensitive module, which is integrated with the display device 34 or the housing 13; the control device is configured to obtain light detection information of the photosensitive module and convert the light detection information into a first brightness adjustment instruction.

[0073] The photosensitive module may include, but is not limited to, a light sensor, and the first brightness adjustment instruction may include the brightness of the display interface. When the brightness of the display interface is 0, the display interface may be closed.

[0074] In an exemplary embodiment, the greater the light intensity in the light detection information of the photosensitive module, the greater the brightness of the display interface in the first brightness adjustment instruction, so that the brightness of the display interface can be changed according to the intensity of the ambient light, so that the user does not need to manually adjust the brightness of the display interface, and can always see the display content clearly regardless of the ambient light, thereby protecting the user's eyes. At the same time, when the intensity of the ambient light is weak, the brightness of the display interface is controlled to be reduced, which is beneficial to energy saving and environmental protection, and improves the economy of the chain saw.

[0075] In an optional embodiment, the chain saw also includes an operating member, and the operating member includes at least one item: a button, a dial or a switch. The control device is configured to obtain position detection information of the operating member and convert the position detection information into a second brightness adjustment instruction, so that the user can adjust the brightness of the display interface through the button, dial or switch; in another optional embodiment, the display device 34 is configured to be able to communicate with the external device 200; the external device 200 is at least configured to allow the user to set the brightness of the display interface, so that the user can adjust the brightness of the display interface through the external device 200, so that the user can adjust the brightness of the display interface according to his or her preferences, and choose a method to set the brightness of the display interface.

[0076] In one embodiment, Figure 5 This is a schematic diagram of the structure of the guide plate pressing the cover plate from a perspective provided in an embodiment of the present application. Figure 6 This is a schematic diagram of the structure of the guide plate pressing the cover plate from another perspective provided in an embodiment of the present application. Figure 7 This is a structural schematic diagram of a nut anti-lost structure from a viewing angle provided in an embodiment of the present application. Figure 8 A structural diagram of a nut anti-lost structure from another perspective provided in an embodiment of the present application, combined with Figures 5 to 8 As shown, the chain saw also includes a nut anti-lost structure 4, which is arranged on the guide plate clamping cover plate 5, and the guide plate clamping cover plate 5 is used to fix the guide plate 11. The clamping nut is connected to the guide plate clamping cover plate 5 through a spring steel wire 41 to ensure that the nut can be tightened with the bolt, and at the same time, the nut can be prevented from falling off and lost during disassembly.

[0077] In one embodiment, the chain saw 100 further includes a chip block 6, which is installed at the tail end of the guide plate pressing cover plate 5, adjacent to the battery pack. On the one hand, it is used for chip guide to prevent wood chips from entering the battery pack; on the other hand, it prevents the chain from falling off and hitting the battery pack, thereby providing secondary protection for the battery pack.

[0078] Based on the same concept, the present embodiment also provides an electric tool, including a tool body or a main body, a power supply device, a motor, a working part or an output part or a cutting part, a motor, a driving circuit, a controller and a motion detection device, etc.; the tool body includes a shell, and the front end of the tool body is configured to be able to install a working part; the power supply device is detachably connected to the shell to power the electric tool; the motor is powered by the power supply device; the working part is installed at the front end of the tool body, and is driven by the motor to realize the cutting function of the electric tool; the motor is accommodated in the shell, and the motor outputs power to drive the working part to work; the driving circuit is electrically connected to the motor to drive the operation of the motor; the controller is accommodated in the shell, and the controller is electrically connected to the driving circuit to at least control the operation of the motor; the motion detection device is associated with the main body or the working part and connected to the controller, and is used to detect the movement change of the main body or the working part in at least one direction; the electric tool is configured to be able to communicate with an external device; the external device is at least configured for the user to operate to start or turn off the automatic braking mode of the electric tool; in the automatic braking mode, the controller can control the motor to enter the braking process based on the acquired movement change.

[0079] Specifically, when the user operates an external device to start the automatic braking mode, the controller can control the motor to enter the braking process based on the acquired operating change. When the user operates an external device to turn off the automatic braking mode of the power tool, the controller of the power tool will not be able to control the motor to enter the braking process based on the acquired motion change. The user can start or turn off the automatic braking mode of the power tool according to his or her needs, thereby making the power tool suitable for users with any needs and improving the universality of the power tool.

[0080] Optionally, the power tool also includes an Internet of Things module, which is configured to be able to communicate with at least an external device; the external device is configured to set the braking sensitivity of the automatic braking mode in a stepless adjustment manner, so that the user can set different braking sensitivities of the automatic braking mode through the external device according to their own sensitivity requirements. In an optional embodiment, the braking sensitivity satisfies greater than or equal to 0 and less than or equal to 100%, thereby making the power tool suitable for users with different needs, further improving the universality of the power tool.

[0081] Optionally, the electric tool in this embodiment may further include a display device installed on the shell, which is used to display the operating status of the electric tool; an Internet of Things module is configured to at least be able to communicate with an external device to receive or send information related to the electric tool; the display device includes at least one display interface; at least part of the Internet of Things module is located in a preset spherical area with the display center of the display interface as the center; the radius of the preset spherical area is greater than or equal to 0mm and less than or equal to 50mm, so that the operation button for triggering the operation control instruction of the Internet of Things module can be set near the operation button around the display device, making the hardware layout more compact, improving the integration of the chain saw, and helping to reduce the volume of the chain saw.

[0082] Optionally, in this embodiment, the display interface can be used to display the operating status of the chain saw, and the electric tool also includes a control device, which is configured to respond to any one of a plurality of preset instructions to light up the display interface.

[0083] The plurality of preset instructions may include, but are not limited to, at least one of a button trigger instruction, a dial trigger instruction, a hardware plug-and-pull trigger instruction, or a remote trigger instruction.

[0084] Specifically, when the control device receives one or more of a button trigger instruction, a dial trigger instruction, a hardware plug-in trigger instruction, or a remote trigger instruction issued by the user, the control device responds to the triggered instruction to light up the display interface, so that the user does not need to manually light up the display interface of the display device 34, thereby avoiding the user being distracted by manually lighting up the display interface, thereby improving the safety performance of the power tool.

[0085] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the above embodiments do not limit the present application in any form, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the present application.

Claims

1. A chain saw comprising: Working parts, including guide plates and chains; A main body, comprising a housing, wherein a front end of the main body is configured to be able to mount the working component; A motor is contained in the housing, and the motor outputs power to drive the working component to work; A driving circuit, electrically connected to the motor, for driving the motor to operate; a controller, contained in the housing, the controller being electrically connected to the drive circuit to at least control the operation of the motor; It is characterized by further comprising: A motion detection device, associated with the main body or the working component and connected to the controller, for detecting a motion change of the main body or the working component in at least one direction; The controller is configured to control the motor to enter a braking process when the motion detection device detects that the motion change of the main body or the working component in at least one direction exceeds a preset condition; The chain saw is configured to be communicatively connected with an external device; the external device is at least configured to allow a user to set information related to the preset condition.

2. The chain saw according to claim 1, characterized in that The preset condition matches the braking sensitivity, and the external device is configured to set the braking sensitivity in a stepless adjustment manner.

3. The chain saw according to claim 2, characterized in that The braking sensitivity satisfies: greater than or equal to 0, and less than or equal to 100%.

4. The chain saw according to claim 1, characterized in that It also includes a rear handle operating member, and the controller is further configured to: obtain a first braking signal triggered by the rear handle operating member, and control the motor to enter a braking process according to the first braking signal.

5. The chain saw according to any one of claims 1 to 4, characterized in that: It also includes a front baffle, and the controller is further configured to: obtain a second braking signal triggered by the front baffle, and control the front baffle to perform mechanical braking according to the second braking signal.

6. The chain saw according to any one of claims 1 to 4, characterized in that The external device is further configured to allow the user to set a braking mode, wherein the braking mode includes any one or a combination of multiple of an automatic braking mode, a manual braking mode and a mechanical braking mode.

7. The chain saw according to any one of claims 1 to 4, characterized in that The motion detection device comprises a gyroscope and / or a linear accelerometer.

8. A chain saw comprising: Working parts, including guide plates and chains; A main body, comprising a housing, wherein a front end of the main body is configured to be able to mount the working component; A motor is contained in the housing, and the motor outputs power to drive the working component to work; A driving circuit, electrically connected to the motor, for driving the motor to operate; a controller, contained in the housing, the controller being electrically connected to the drive circuit to at least control the operation of the motor; It is characterized by further comprising: A motion detection device, associated with the main body or the working component and connected to the controller, for detecting a motion change of the main body or the working component in at least one direction; The controller is further configured to control the motor to enter a braking process based on the acquired motion variation and a target control program set by an external device.

9. The chain saw according to claim 8, characterized in that The target control program matches the braking sensitivity, and the external device is configured to set the braking sensitivity in a stepless adjustment manner.

10. The chain saw according to claim 9, characterized in that The braking sensitivity satisfies: greater than or equal to 0, and less than or equal to 100%.

11. The chain saw according to any one of claims 8 to 10, characterized in that The motion detection device comprises a gyroscope and / or a linear accelerometer.

12. An electric tool comprising: A tool body, comprising a housing, wherein a front end of the tool body is configured to be able to mount a working component; A working component, mounted at the front end of the tool body, for realizing the function of the electric tool; A motor is contained in the housing, and the motor outputs power to drive the working component to work; A driving circuit, electrically connected to the motor, for driving the motor to operate; a controller, contained in the housing, the controller being electrically connected to the drive circuit to at least control the operation of the motor; A motion detection device, associated with the main body or the working component and connected to the controller, for detecting a motion change of the main body or the working component in at least one direction; It is characterized in that The electric tool is configured to be able to communicate with an external device; the external device is at least configured to be operated by a user to start or shut down the automatic brake mode of the cutting tool; In the automatic braking mode, the controller can control the motor to enter a braking process based on the acquired motion change amount.

13. The electric tool according to claim 12, characterized in that: Also includes: The Internet of Things module is configured to at least be able to communicate with an external device; the external device is configured to set the braking sensitivity of the automatic braking mode in a stepless adjustment manner.

14. The electric tool according to claim 12, characterized in that: The braking sensitivity satisfies: greater than or equal to 0, and less than or equal to 100%.

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