Hand-propelled power tool and handle arrangement therefor
By using Hall effect sensors and magnetic components to detect the extension and retraction status in the lawnmower handle assembly, wireless remote control is achieved, solving the problem of easy damage to the connecting rod assembly and improving the tool's structural simplicity and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NANJING CHERVON IND
- Filing Date
- 2022-06-27
- Publication Date
- 2026-07-24
Smart Images
Figure CN117642064B_ABST
Abstract
Description
[0001] This application claims priority to Chinese Patent Application No. 202110729715.0, filed on June 29, 2021, and Chinese Patent Application No. 202121463161.6, filed on June 29, 2021, the entire contents of which are incorporated herein by reference. Technical Field
[0002] This application relates to a power tool, such as a push-type power tool and its handle device. Background Technology
[0003] Lawn mowers are machines typically used by users to trim household lawns. A common lawn mower consists of a main unit and a handle, which is movably connected to the main unit. Users control the mower's movement and mowing by pushing the handle. However, the various control switches and controllers on the handle need to communicate with the controller in the main unit. Therefore, the handle's connecting rod assembly is usually hollow, housing various electrical wiring. During the extension and retraction of the connecting rod assembly, these wires are easily damaged, leading to unstable or malfunctioning control between the handle and the main unit. Furthermore, the complex wiring within the connecting rod assembly increases the difficulty of subsequent maintenance. Summary of the Invention
[0004] To address the shortcomings of related technologies, this application provides a simple and safe hand-operated power tool and its handle device.
[0005] To achieve the above objectives, this application adopts the following technical solution:
[0006] A push-type power tool includes: a main body tool, including a working component and a control unit for controlling the operation of the working component; and a handle assembly connected to the main body tool. The handle assembly includes: an operating element, including a grip for a user to hold; a connecting rod assembly, including a first connecting rod connected to the main body tool, the first connecting rod including a first lower rod portion and a first upper rod portion, the first lower rod portion being connected to the main body tool, and the first upper rod portion being connected to the operating element; the first upper rod portion being slidable relative to the first lower rod portion along a first straight line to a retracted position and an extended position; when the first upper rod portion is in the retracted position, the handle assembly is in a retracted state; when the first upper rod portion is in the extended position, the handle assembly is in an extended state; a detection device, including a first detection element for detecting the extension / retraction state of the handle assembly; and a control device mounted to the operating element, the first detection element being electrically or communicatively connected to the control device. The control device is configured to control the control unit based on the detection information from the first detection element.
[0007] In some embodiments, the first detection element is a Hall sensor.
[0008] In some embodiments, the detection device further includes a second detection element, which is a magnetic element or a magnetically conductive element that cooperates with the Hall sensor. The second detection element is installed in the first lower rod or in a housing that is fixedly connected to the first lower rod.
[0009] In some embodiments, the first detection element is electrically connected to the control device via a first connection line.
[0010] In some embodiments, the control device is disposed within the mounting housing.
[0011] In some embodiments, the handle device further includes a second connecting line that connects the control device and the control unit.
[0012] In some embodiments, the second connecting line passes through the first connecting rod.
[0013] In some embodiments, the first connecting rod is connected to one end of the operating member, and the handle device further includes a second connecting rod connected to the other end of the operating member, with a second connecting line passing through the second connecting rod.
[0014] In some embodiments, the operating element includes a mounting housing connected to a grip or a first connecting rod, and a first detection element is at least partially disposed within the mounting housing.
[0015] In some embodiments, the first detection element is disposed at one end of the mounting housing near the first connecting rod.
[0016] In some embodiments, the handle device further includes: a second connecting rod connecting the operating element and the tool host, and a connecting housing connecting the first connecting rod and the second connecting rod. The detection device further includes a second detection element, the first detection element being a Hall sensor, and the second detection element being a magnetic element or a magnetically conductive element cooperating with the Hall sensor. The second detection element is at least partially disposed within the connecting housing.
[0017] In some embodiments, the first detection element is mounted to the end of the first upper rod near the first lower rod.
[0018] In some embodiments, the first detection element is located at least partially inside the first upper rod portion.
[0019] In some embodiments, a first connecting line passes through a first upper rod portion to connect to a control device.
[0020] In some embodiments, the first detection element is a switching element, and the detection device further includes a trigger element that cooperates with the switching element.
[0021] In some embodiments, the first detection element is a Hall sensor, and the trigger is a magnetic element or a magnetically conductive element that cooperates with the Hall sensor.
[0022] In some embodiments, the first detection element is a contact switch.
[0023] In some embodiments, the control device is configured to prevent the control unit from operating when the detection information of the first detection element increases or decreases to a preset parameter value.
[0024] A handle device includes: an operating element including a grip portion for a user to hold; a connecting rod assembly including a first connecting rod connected to a tool host, the first connecting rod including a first lower rod portion and a first upper rod portion, the first lower rod portion being connected to the tool host, the first upper rod portion being connected to the operating element, the first upper rod portion being slidable relative to the first lower rod portion along a first straight line to a retracted position and an extended position, the handle device being in a retracted state when the first upper rod portion is in the retracted position, and the handle device being in an extended state when the first upper rod portion is in the extended position; a detection device including a first detection element for detecting the extension / retraction state of the handle device; and a control device mounted to the operating element, the first detection element being electrically or communicatively connected to the control device. The control device is configured to control the operation of the working components of the tool host based on the detection information from the first detection element.
[0025] A lawnmower includes: a main unit including a cutting assembly and a cutting motor for controlling the cutting assembly to perform cutting functions; a handle assembly connected to the main unit; the handle assembly including: an operating element including a grip for a user to hold; a connecting rod assembly including a first connecting rod connected to the main unit, the first connecting rod including a first lower rod portion and a first upper rod portion, the first lower rod portion being connected to the main unit, the first upper rod portion being connected to the operating element, the first upper rod portion being slidable relative to the first lower rod portion along a first straight line to a retracted position and an extended position, the handle assembly being in a retracted state when the first upper rod portion is in the retracted position, and the handle assembly being in an extended state when the first upper rod portion is in the extended position; a detection device including a first detection element for detecting the extension / retraction state of the handle assembly; and a control device mounted to the operating element, the first detection element being electrically or communicatively connected to the control device. The control device is configured to control the cutting motor based on the detection information from the first detection element.
[0026] The advantages of this application are: the hand-push power tool has a simple structure and higher safety performance. Attached Figure Description
[0027] Figure 1 It's a 3D image of a lawnmower;
[0028] Figure 2 yes Figure 1 A 3D view of a lawnmower with its handle in the extended position;
[0029] Figure 3 yes Figure 1 A 3D view of a lawnmower with its handle retracted.
[0030] Figure 4 yes Figure 2 Another 3D view of the structure shown;
[0031] Figure 5 yes Figure 3 Another 3D view of the structure shown;
[0032] Figure 6 yes Figure 1 A structural diagram of the lawnmower handle assembly with part of the housing removed;
[0033] Figure 7 yes Figure 1 A cross-sectional view of the lawnmower handle assembly;
[0034] Figure 8 yes Figure 1 Exploded view of the locking mechanism in the handle of a lawnmower;
[0035] Figure 9 yes Figure 1 A schematic diagram of the wireless remote control device for the lawnmower handle assembly;
[0036] Figure 10 This is a perspective view of another handle device suitable for the main body of a lawnmower as shown in Figure 1;
[0037] Figure 11 yes Figure 10 A three-dimensional view of the handle device in the retracted state;
[0038] Figure 12 yes Figure 11 The handle device in the image has some parts removed from the internal view;
[0039] Figure 13 yes Figure 12 Enlarged view of a portion of the image;
[0040] Figure 14 This is a control block diagram applicable to lawnmowers;
[0041] Figure 15 yes Figure 1 A cross-sectional view of the handle assembly in the middle;
[0042] Figure 16 This is a perspective view of another handle device applicable to the main body of a lawnmower, as shown in Figure 1;
[0043] Figure 17 yes Figure 16A three-dimensional view of the handle device in the retracted state;
[0044] Figure 18 yes Figure 16 A cross-sectional view of the handle assembly in the middle;
[0045] Figure 19 yes Figure 16 An internal view of the handle assembly with some parts removed and the first connecting rod cut open.
[0046] Figure 20 yes Figure 19 Enlarged view of a portion of the image;
[0047] Figure 21 This is a control block diagram applicable to lawnmowers;
[0048] Figure 22 It is a type of product suitable for Figure 16 A schematic diagram of a detection device for a handle device;
[0049] Figure 23 yes Figure 22 A schematic diagram of the detection device in the case when the handle is in the retracted state. Detailed Implementation
[0050] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the application. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present application and not the entire structure.
[0051] It is understood that the handle device of this application can be applied not only to lawnmowers, but also to other large garden power tools, such as snowplows and blowers. This embodiment uses a lawnmower as an example for illustration.
[0052] Reference Figure 1 The lawnmower 100 shown is a push-type power tool. The lawnmower 100 includes a main unit 20 and a handle 10. The main unit 20 includes at least a working component and a control unit. The working component may include a walking component 211, such as wheels, and a cutting component 212, such as blades. The control unit may include a drive motor 221 for controlling the walking component 211 and a cutting motor 222 for controlling the cutting component 212 to perform cutting functions. The main unit 20 may also include a chassis 23 for housing the cutting component 212, and the walking component 211 supports the chassis 23.
[0053] The handle 10 is connected to the main unit 20 and to the rear end of the main unit 20. The handle 10 is for user operation. The handle 10 can also rotate relative to the main unit 20 to accommodate users of different heights. The handle 10 can also rotate relative to the main unit 20 to a folded state, in which case the lawnmower 100 occupies less space, thus facilitating the storage of the lawnmower 100.
[0054] like Figures 1 to 7 As shown, the handle device 10 includes at least an operating member 11, a connecting rod assembly 12, and a housing 13. The operating member 11 includes a grip portion 111, a first mounting portion 112, and a second mounting portion 113. The grip portion 111 is for the user to hold, and the first mounting portion 112 and the second mounting portion 113 are respectively disposed at both ends of the grip portion 111. In this embodiment, the first mounting portion 112 extends along a first straight line 11a, and the second mounting portion 113 extends along a second straight line 11b parallel to the first straight line 11a. When the user needs to push the lawnmower to mow the lawn, the user can stand behind the handle device 10 and grip the grip portion 111 to apply a forward pushing force, thereby driving the lawnmower 100 to move on the ground.
[0055] The connecting rod assembly 12 is used to connect the operating element 11 and the tool body 20. The connecting rod assembly 12 includes a first connecting rod 121 and a second connecting rod 122. One end of the first connecting rod 121 is connected to the tool body 20, and the other end is connected to the first mounting part 112. One end of the second connecting rod 122 is connected to the tool body 20, and the other end is connected to the second mounting part 113. The first connecting rod 121 extends along a first straight line 11a, and the second connecting rod 122 extends along a second straight line 11b parallel to the first straight line 11a.
[0056] The housing 13 extends in a left-right direction and connects to a first connecting rod 121 and a second connecting rod 122. The handle device 10 also includes a trigger 14a for activating the cutting blade, the trigger 14a being rotatably connected to an operating member 11. The housing 13 forms a first receiving cavity 131, into which the first connecting rod 121 extends along a first straight line 11a. The housing 13 is also fixedly connected to the connecting rod assembly 12.
[0057] The handle device 10 is also equipped with a wireless remote control device 15. Therefore, the handle device 10 in this embodiment is a wireless remote control handle device. In this embodiment, the wireless remote control device 15 is located on the left, right, or center of the operating member 11 to facilitate user operation. The wireless remote control device 15 can output control information to the control unit of the tool host 20 via wireless communication, thereby controlling the working state of the tool host 20. The communication method of the wireless remote control device 15 can be optical communication, such as infrared communication or ultraviolet communication, or it can be radio frequency communication, Bluetooth communication, ZigBee communication, etc.
[0058] In one embodiment, such as Figure 9 As shown, the wireless remote control device 15 may include a display module 151 to display the current working status of the lawnmower 100, such as the walking speed of the lawnmower 100, the cutting force of the cutting blade, or other status information.
[0059] In one embodiment, the wireless remote control device 15 may further include an input module 152, such as an input button or a touch button, for users to input operation commands or view historical status information.
[0060] In one embodiment, the wireless remote control device 15 includes a data transmission module 153 for outputting control information wirelessly. Correspondingly, the tool host 20 also includes a data receiving module (not shown) for receiving information transmitted by the data transmission module 153. Optionally, the positions of the data transmission module 153 and the data receiving module can be interchanged.
[0061] In this embodiment, a power supply module 16 independently powers the wireless remote control device 15. The power supply module 16 can be one or more of a removable button battery, a rechargeable battery, a solar cell, or a power bank. For example, a button battery with a capacity of 100mAh or higher can be used for the wireless remote control device 15. Multiple button batteries can be integrated into the handle device 10, connected in series or parallel. The power supply module 16 can be detachably connected to the handle device 10 via a metal spring or spring structure, or detachably fixed to the handle device 10 with screws, or detachably mounted on the handle device 10 via an external power interface, such as a Type-C interface. In one embodiment, the power supply module 16 is a rechargeable battery, and the charging port of the rechargeable battery can be located on the handle device 10.
[0062] In this embodiment, the wireless remote control device 15 is powered by the power supply module 16 installed on the handle device 10. Thus, when the wireless remote control device 15 is detached from the handle device 10, the electrical connection between the power supply module 16 and the wireless remote control device 15 is broken, and the wireless remote control device 15 loses its power source. At this point, the communication connection between the wireless remote control device 15 and the tool host 20 is interrupted. This helps prevent the wireless remote control device 15 from being lost.
[0063] In one embodiment, the power supply module 16 can be a flexible solar cell, such as a solar panel. The solar panel can absorb light energy and convert it into electrical energy to power the wireless remote control device 15. Optionally, the solar panel can be disposed on the connecting rod assembly 12 and / or the grip portion 111 and / or the housing 13. Optionally, the solar panel can also be disposed on the operating member 11 or adjacent to the wireless remote control device 15. In short, the solar panel needs to be able to receive enough light energy to power the wireless remote control device 15 without the power being reduced to the point where it cannot power the wireless remote control device 15 due to occasional obstruction by a human hand. It is understood that as long as the solar panel is disposed on the handle device 10, it can be connected via a short electrical connection cable even if there is a short distance between it and the wireless remote control device 15. Since the electrical connection cable is only located between the solar panel and the wireless remote control device 15 and the distance is short, the impact on the complexity of the circuit design is within an acceptable range.
[0064] In one embodiment, the ratio of the solar panel coverage area on the handle device 10 to the area of the handle device 10 is 20%-50%. It is understood that the solar panel can be divided into several smaller panels and placed in different locations on the handle device 10 to ensure sufficient sunlight exposure and thus guarantee a continuous and sufficient power supply. Several small solar panels can be electrically connected to unify the power supply before supplying it to the wireless remote control device 15. By setting the coverage area of the solar panels on the handle device 10, the number of panels is not limited, ensuring sufficient solar power supply while increasing the flexibility of solar panel placement. Furthermore, setting the solar panel coverage area to 20%-50% of the area of the handle device 10 ensures that the solar panels have sufficient sunlight to power the wireless remote control device 15 while avoiding any impact on the appearance or other structure of the handle device 10. In one embodiment, multiple solar panels on the handle device 10 can each individually power the wireless remote control device 15, so that if one solar panel malfunctions or is damaged, other solar panels can be used to power the wireless remote control device 15. In one embodiment, the solar panels can also be used to charge a rechargeable battery.
[0065] In this embodiment, the lawnmower 100 also includes an alarm module 17, which can issue an alarm prompt when the wireless remote control device 15 outputs control information to inform the user that the control command has been successfully sent. Optionally, the alarm module 17 can be integrated into the wireless remote control device 15, or it can be set separately in other locations on the handle device 10. The alarm module 17 can communicate wirelessly with the wireless remote control device 15, and the communication protocol may be different from the communication protocol between the wireless remote control device 15 and the main unit 20, or it may be consistent with the communication protocol between the wireless remote control device 15 and the main unit 20. In one embodiment, the alarm module 17 can provide other forms of prompts such as voice prompts, flashing prompts, voice and flashing prompts, or buzzers. In one embodiment, the alarm module 17 can be powered independently, or it can be powered by the same power supply module 16 as the wireless remote control device 15.
[0066] In this embodiment, a safety control module 18 is also included. The safety control module 18 can be integrated into the wireless remote control device 15 or can be separately located in another position on the handle device 10. The safety control module 18 can encrypt the control information output by the wireless remote control device 15. It is understood that the wireless remote control device 15 can output an alarm command to the alarm module 17 for alarm notification while simultaneously outputting control information. Therefore, the safety control module 18 encrypts different output information to prevent crosstalk between information. Since different wireless communication methods use different encryption methods, the safety control module 18 can match an appropriate information encryption technology according to the communication method used by the wireless remote control device 15.
[0067] In this embodiment, the wireless remote control device 15 can perform wireless communication in real time or after being woken up based on a preset frequency, thereby reducing the standby power consumption of the wireless communication module and improving the service life of the power supply module 16.
[0068] In this embodiment, the first connecting rod 121 and the second connecting rod 122 are collectively referred to as the telescopic rod. Because the cutting blades on the chassis 23 of the lawnmower 100 can easily injure the user, the lawnmower 100 is designed so that the telescopic rod is fully extended before mowing can begin; when the telescopic rod is fully retracted or in an intermediate state between fully extended and fully retracted, the machine is either not started or stopped. Figures 2-5As shown, a locking mechanism 101 is also provided on the handle device 10. The locking mechanism 101 can lock the telescopic rod in either the fully extended or fully retracted state, thereby preventing the telescopic rod from sliding. That is, the locking mechanism 101 is also locked when the telescopic rod is in the fully retracted state. Therefore, controlling the lawnmower's start-up solely by judging the locked state of the locking mechanism 101 poses a safety hazard. To avoid this situation, in addition to coordinating with the locked state of the locking mechanism 101, a safety control device is needed to detect the extension and retraction state of the telescopic rod. The extension and retraction state includes the fully extended state, the fully retracted state, and the intermediate state between the two states of the telescopic rod, i.e., the first connecting rod 121.
[0069] In one implementation, such as Figure 8 As shown, the locking mechanism 101 is provided with a pin 1011. Correspondingly, the first connecting rod 121 is provided with a socket 1211. After the pin 1011 is inserted into the socket 1211, it can fix the connection state of the connecting rod assembly 12. When the pin is not inserted into the socket 1211, the connecting rod assembly can slide freely. Optionally, the locking mechanism 101 can also be other forms of fixing structure, which will not be listed here.
[0070] like Figure 3 and Figure 5 As shown, the first connecting rod 121, i.e. the telescopic rod, is in the fully retracted state. Figure 2 and Figure 4 As shown, the first connecting rod 121 is in the fully extended state, and the state between the two states is the intermediate state. Specifically, in order to detect the extension and retraction state of the telescopic rod, a first detection element 1141 for detecting the extension and retraction state of the telescopic rod is provided on the operating member 11 of the handle device 10, which is electrically connected to the wireless remote control device 15. Correspondingly, a second detection element 1311 is provided on the housing 13. It can be understood that the first detection element 1141 and the operating member 11 form a first integral unit that moves together, and the second detection element 1311 and the connecting rod assembly 12 form a second integral unit that moves together. In this way, the position of the second detection element 1311 remains unchanged in the direction of the first straight line 11a as the connecting rod assembly 12 moves, while the first detection element 1141 moves with the operating member 11, thereby changing the distance between the first detection element 1141 and the second detection element 1311.
[0071] Understandably, the first detection element 1141 can be completely disposed within the second receiving cavity 114 formed by the operating member 11, or partially disposed within the second receiving cavity 114, or completely disposed on the surface of the first mounting portion 112 or the second mounting portion 113 of the operating member 11. The second detection element 1311 can be completely disposed within the first receiving cavity 131 formed by the housing 13, or partially disposed within the first receiving cavity 131, or disposed on the outer surface of the housing 13. Optionally, the first detection element 1411 and the second detection element 1311 can be disposed on a straight line parallel to the first straight line 11a, or disposed on a straight line not parallel to the first straight line 11a.
[0072] In one embodiment, the first detection element 1141 and the second detection element 1311 can sense each other's presence, and as the telescopic rod extends, the distance between them increases, thus gradually reducing the signal strength they sense. Therefore, the wireless remote control device 15 can determine the extension state of the telescopic rod based on the strength of the sensed signal. For example, the first detection element 1141 can sense an intermediate parameter representing the distance between them and then transmit this parameter to the wireless remote control device 15. The wireless remote control device 15 determines the distance between the first detection element 1141 and the second detection element 1311 based on the acquired intermediate parameter, thereby determining the extension state of the telescopic rod. Optionally, the first detection element 1141 can also directly determine the distance between them based on the monitored intermediate parameter and determine the extension state of the telescopic rod, and then transmit this extension state to the wireless remote control device 15. When the telescopic rod is in a fully retracted state or an intermediate state, the wireless remote control device 15 controls the main control unit 22 of the tool host 20 to remain inactive, or controls the working components of the tool host 20 to stop working when the tool host 20 is in a working state.
[0073] In one embodiment, the first detection element 1141 and the second detection element 1311 can be any sensing element capable of sensing each other or unidirectionally sensing the distance between them. For example, the first detection element 1141 and the second detection element 1311 can sense the distance between them through magnetic induction, optical induction, acoustic induction, etc.
[0074] In one implementation, the first detection element 1141 is a Hall effect device, and the second detection element 1311 is a magnetic element or a magnetically conductive element. The Hall effect device can sense the magnitude of the magnetic flux between itself and the magnetic or magnetically conductive element. It should be noted that as the distance between the Hall effect device and the magnetic or magnetically conductive element increases, the magnetic flux sensed by the Hall effect device decreases. When the magnetic flux sensed by the Hall effect device is less than or equal to a magnetic flux threshold, the first connecting rod 121 can be considered to be in a fully extended state; when the magnetic flux is greater than the magnetic flux threshold, the first connecting rod 121 can be considered to be in a fully retracted state or an intermediate state. Thus, the wireless remote control device 15 can output control signals to the main control unit 22 of the tool host 20 to control the working components on the tool host 20 to not start or stop working when the magnetic flux is greater than the magnetic flux threshold, and to start working when the magnetic flux is less than or equal to the magnetic flux threshold.
[0075] Understandably, when the wireless remote control device 15 determines that the telescopic rod is in a fully extended state based on the magnitude of the obtained magnetic flux, the locking mechanism 101 is also in a locked state. That is to say, at this time, the first connecting rod 121 and the second connecting rod 122 are in a fully extended and fixed state, and the lawnmower 100 can start mowing.
[0076] In one embodiment, the shape of the magnetic element or magnetically conductive element can be arbitrary. The Hall effect device can also be disposed on the surface of the operating element, and the magnetic element or magnetically conductive element can also be disposed on the surface of the housing 13. This reduces the influence of the housing 13 on the magnetic field strength or magnetic flux magnitude.
[0077] In one embodiment, the first detection element 1141 and the second detection element 1311 can also be switching elements with only two defined states. For example, the first detection element 1141 can be a switching element having a first switching state and a second switching state. The second detection element 1131 is a trigger element used to trigger the switching element to switch its switching state. Specifically, when the first connecting rod 121 is in a fully extended state or an intermediate state, the switching element and the trigger element are not in contact, and the switching element is in the first switching state; when the first connecting rod 121 is in a fully retracted state, the switching element and the trigger element are in contact, and the switching element is in the second switching state. In particular, if the trigger element is long or its position changes, when the trigger element is in contact with the switching element, the switching element is in the second switching state, and the first connecting rod 121 may also be in an intermediate state. The first switching state can be an open state, and the second switching state can be a closed state. That is, when the switching element is in the closed state, the first connecting rod 121 is in a fully retracted state or the intermediate state. Therefore, the wireless remote control device 15 can determine the extension / retraction state of the telescopic rod by detecting the state of the switching elements. Furthermore, when the switching element is in the first switching state, i.e. the open state, it can be determined that the telescopic rod is in a fully extended state or an intermediate state. By cooperating with the locking state of the locking mechanism 101, the working components of the tool host 20 can be controlled to work. When the switching element is in the second switching state, i.e. the closed state, it can be determined that the telescopic rod is in a fully retracted state or an intermediate state. The working components of the tool host 20 can be directly controlled to not start or stop working.
[0078] In this embodiment, by setting detection elements on the operating component 11 and housing 13 of the lawnmower 100 respectively, the extension and retraction state of the telescopic rod is detected. This ensures the accuracy of the telescopic rod state judgment while avoiding complex wiring, and, together with the locking mechanism 17, controls the start of the lawnmower 100, thereby improving the safety of the lawnmower 100 control.
[0079] In this embodiment, as Figure 7 As shown, the handle 10 of the lawnmower 100 may also be equipped with a pressure sensor 19a, which is used to sense the thrust applied by the user to the handle 10 to drive the lawnmower 100. The pressure sensor 19a is electrically connected to the wireless remote control 15 and can output an electrical signal to the wireless remote control 15. The wireless remote control 15 then outputs a control signal to the main unit 20 based on the electrical signal output by the pressure sensor 19a to change the walking speed of the lawnmower 100.
[0080] In one embodiment, the pressure sensor 19a is a resistance strain gauge sensor. In other embodiments, the pressure sensor 19a may also be a piezoelectric thin-film sensor or a ceramic sensor. The handle device 10 is also provided with a trigger component 19b, which applies a force to the pressure sensor 19a when the grip portion 111 is subjected to a pushing force, causing the pressure sensor 19a to deform. Thus, when the user applies a pushing force to the grip portion 111, the trigger component 19b applies a force to the pressure sensor 19a, causing the pressure sensor 19a to deform and generate an electrical signal. The pressure sensor 19a then outputs this electrical signal to the wireless remote control device 15. Optionally, the wireless remote control device 15 can directly transmit the electrical signal output by the pressure sensor 19a to the tool host 20 via wireless communication, whereby the tool host 20 performs calculations and controls the drive motor 221 to change its speed accordingly. Optionally, the wireless remote control device 15 can also directly determine the control signal for controlling the speed of the drive motor 221 based on the electrical signal output by the pressure sensor 19a, and transmit the control signal to the main unit 20 to control the motor to change its speed. Understandably, when the user accelerates, the thrust applied to the handle device 10 increases, and the wireless remote control device 15 also controls the lawnmower's forward speed to increase. Similarly, when the user decelerates, the thrust applied to the handle device 10 decreases, and the wireless remote control device 15 also controls the lawnmower's forward speed to decrease. This ensures that the lawnmower's forward speed matches the user's walking speed, preventing the lawnmower from dragging the user along and improving user comfort.
[0081] Figure 10 The image shown is of another type that can be adapted. Figure 1 The handle assembly 30 of the tool host 20 is configured to connect to the tool host 20. Figure 1 The tool body 20 is included. The handle device 30 includes an operating element 31 and a connecting rod assembly 32. The operating element 31 includes a grip portion 311 for a user to hold, and the connecting rod assembly 32 is used to connect the operating element 31 to the tool body 20.
[0082] like Figures 10 to 14 As shown, the operating component 31 also includes a trigger 312 and a mounting housing 313. The trigger 312 is rotatably connected to the mounting housing 313 and is used to control the operation of the control unit 22. The mounting housing 313 is used to mount the trigger 312 and to connect the operating component 31 to the connecting rod assembly 32.
[0083] The connecting rod assembly 32 includes a first connecting rod 321, which connects the operating member 31 and the tool body 20. The first connecting rod 321 extends along a first straight line 31a and includes a first upper rod portion 321a and a first lower rod portion 321b. A first end 321c of the first upper rod portion 321a is connected to the operating member 31, and a second end 321d of the first upper rod portion 321a is connected to the first lower rod portion 321b. The first lower rod portion 321b is also connected to the tool body 20. The first upper rod portion 321a is slidable relative to the first lower rod portion 321b along the first straight line 31a. Figure 11 The contraction position and Figure 10 The unfolded position. When the first upper rod 321a slides to... Figure 11 When the handle device 30 is in the retracted position, its dimension along the first straight line 31a decreases, and the handle device 30 is in the retracted state. When the first upper lever portion 321a slides to... Figure 10 When the handle device 30 is in the unfolded state, its size along the first straight line 31a increases, indicating that the handle device 30 is in the unfolded state. In this embodiment, the retracted position refers to the position where the first upper rod portion 321a slides to the position where the size of the handle device 30 along the first straight line 31a is minimized, and the unfolded position refers to the position where the first upper rod portion 321a slides to the position where the size of the handle device 30 along the first straight line 31a is maximized. Of course, it is understood that in other embodiments, the handle device 30 may also be in an intermediate state between the retracted state and the unfolded state. When the handle device 30 is in an intermediate state, its size along the first straight line 31a is between its minimum and maximum size.
[0084] In this embodiment, the handle device 30 further includes a control device 33, which is electrically or communicatively connected to the control unit 22 in the tool host 20. The control unit 22 includes a cutting motor 222 and a drive motor 221. The control device 33 can control the operation of the control unit 22, for example, controlling the operation of the cutting motor 222 or the drive motor 221. In some embodiments, the control device 33 can control whether the cutting motor 222 is started, and the control device 33 can also control whether the drive motor 221 is started. In some embodiments, the control device 33 can also control the rotational speed of the drive motor 221 or the rotational speed of the cutting motor 222. In some embodiments, the control device 33 can control the operating mode of the drive motor 221 or the operating mode of the cutting motor 222.
[0085] In this embodiment, the control device 33 is installed on the operating component 31. Thus, the trigger 312 and other electronic components in the operating component 31 can be connected to the control device 33, and signals are transmitted to the tool host 20 via the control device 33. The trigger 312 and other electronic components are all connected to the control device 33, which controls the operation of the control unit 22 or other electrical appliances in the tool host 20. For example, the safety switch 314 in the operating component 31 is electrically connected to the control device 33, and the speed control device in the operating component 31 is also electrically connected to the control device 33.
[0086] The handle assembly 30 also includes a detection device 34, which includes a first detection element 341 for detecting the extension / retraction state of the handle assembly 30. The first detection element 341 can detect whether the handle assembly 30 is in a retracted or extended state. The first detection element 341 is also electrically or communicatively connected to the control device 33. Thus, the first detection element 341 can send detection information to the control device 33, and the control device 33 controls the control unit 22 based on the detection information from the first detection element 341. In this embodiment, the first detection element 341 is electrically or communicatively connected to the control device 33 installed in the handle assembly 30. This allows the information from the first detection element 341 to be transmitted to the control device 33, which then controls the control unit 22. This reduces the number of electrical connections in the lawnmower, reducing costs and improving the reliability of information transmission. Furthermore, it facilitates the modular design of the handle assembly 30, allowing it to be adapted to more types of tool mainframes 20. In other words, the handle device 30 can also be adapted to other functional tool main units 20, thus enabling the push-type power tool with the handle device 30 to achieve more functions. For example, the push-type power tool can be a snowplow, and the handle device 30 can be installed on the snowplow main unit to realize the snowplow function.
[0087] The control device 33 is configured to control the operation of the cutting motor 222 based on the detection information from the first detection element 341. When the first detection element 341 detects that the handle device 30 is in the retracted state, the control device 33 prevents the cutting motor 222 from being started. This ensures user safety by preventing the cutting motor 222 from starting even if the user mistakenly operates the trigger 312 and / or the safety switch 314. When the first detection element 341 detects that the handle device 30 is in the extended state, the control device 33 allows the cutting motor 222 to be started. Figure 10 and Figure 11As shown, the handle device 30 also includes a locking device 35 for locking the first upper lever portion 321a from sliding relative to the first lower lever portion 321b. When the handle device 30 is disengaged from the retracted position and the locking device 35 is not locking the first upper lever portion 321a, the user generally will not trigger the trigger 312 and the safety switch 314, so the cutting motor 222 will generally not be started. It is understandable that when the handle device 30 is in the intermediate state, the control device 33 can control whether the cutting motor 222 can be started or not based on the detection information from the first detection element 341. For example, the first detection element 341 detects a parameter value, which can be compared with a preset parameter value. When the parameter value reaches the preset parameter value, the control device 33 controls the cutting motor 222 to not be started. Thus, the control device 33 can control the cutting motor 222 to not start when the handle device 30 is in the retracted state or a partially intermediate state. In this embodiment, when the parameter value increases to the preset parameter value, the control device 33 controls the cutting motor 222 to not be started. In other embodiments, when the parameter value decreases to a preset parameter value, the control device 33 controls the cutting motor 222 to not be started.
[0088] In some embodiments, the control device 33 is configured to control the operation of the drive motor 221 based on the detection information of the first detection element 341. When the first detection element 341 detects that the handle device 30 is in a retracted state, the control device 33 controls the drive motor 221 to not start. When the first detection element 341 detects that the handle device 30 is in an extended state, the control device 33 controls the drive motor 221 to start.
[0089] In some embodiments, the control device 33 is configured to control the operation of the drive motor 221 and the cutting motor 222 based on the detection information from the first detection element 341. When the first detection element detects that the handle device 30 is in a retracted state, the control device 33 prevents both the drive motor 221 and the cutting motor 222 from starting. When the first detection element 341 detects that the handle device 30 is in an extended state, the control device 33 allows the drive motor 221 and the cutting motor 222 to be started.
[0090] like Figures 11 to 15 As shown, the first detection element 341 is mounted to the operating member 31 or the first upper rod portion 321a. In this embodiment, the first detection element 341 is mounted to the operating member 31. The first detection element 341 is electrically connected to the control device 33 via a first connecting line 342. Mounting the first detection element 341 to the operating member 31 allows for a shorter length of the first connecting line 342 connected to the control device 33, and also simplifies the arrangement of the first connecting line 342.
[0091] Specifically, the mounting housing 313 of the operating member 31 has a first receiving cavity 313a. The control device 33 is disposed within the first receiving cavity 313a. The first detection element 341 is mounted to the mounting housing 313, and the first detection element 341 is at least partially disposed within the first receiving cavity 313a. This allows the first connecting line 342 to be disposed within the first receiving cavity 313a, and the first connecting member to be minimized. The reliability of the detection device 34 and the control device 33 is also improved. In this embodiment, the first detection element 341 is disposed at the end of the mounting housing 313 near the first connecting rod 321.
[0092] The first detection element 341 is a Hall sensor, which is electrically connected to the control device 33 via a first connecting line 342. The Hall sensor is at least partially disposed within the first receiving cavity 313a. The detection device 34 also includes a second detection element 343 that cooperates with the first detection element 341. The second detection element 343 is a magnetic or magnetically conductive element that cooperates with the Hall sensor. The second detection element 343 is fixed relative to the first lower rod portion 321b. The second detection element 343 can be installed to the first lower rod portion 321b or installed within a housing fixedly connected to the first lower rod portion 321b.
[0093] Specifically, the handle device 30 also includes a connecting housing 36, which is fixedly connected to the first lower rod portion 321b, and the second detection element 343 is installed to the connecting housing 36.
[0094] In this embodiment, the connecting rod assembly 32 further includes a second connecting rod 322, which connects the operating member 31 and the tool host 20. The second connecting rod 322 and the first connecting rod 321 are disposed at opposite ends of the operating member 31. The second connecting rod 322 extends along a second straight line 31b, which is parallel to the first straight line 31a. The second connecting rod 322 includes a second upper rod portion 322a and a second lower rod portion 322b. The second upper rod portion 322a is connected to the operating member 31, and the second lower rod portion is connected to the tool host 20. The second upper rod portion 322a can slide relative to the second lower rod portion 322b to a retracted position and an extended position.
[0095] The handle device 30 also includes a second connecting line 331 connecting the control device 33 and the control unit 22. In this embodiment, one end of the second connecting line 331 is disposed in the first receiving cavity 313a and connected to the control device 33, and the other end of the second connecting line 331 is disposed in the tool body 20 and connected to the control unit 22. The first connecting rod 321 is a hollow tube, and the second connecting line 331 passes through the first connecting rod 321.
[0096] The control device 33 includes a circuit board 332, and a first connecting line 342 and a second connecting line 331 are both connected to the circuit board 332. The circuit board 332 is housed in a first receiving cavity 313a.
[0097] The second connecting rod 322 is also a hollow tube. In other embodiments, the second connecting line 331 may also pass through the second connecting rod 322.
[0098] The connecting housing 36 connects the first connecting rod 321 and the second connecting rod 322, and the locking device 35 is installed in the connecting housing 36. The second detection element 343 is installed in the connecting housing 36. The second detection element 343 is a magnetic element, and the magnetic element is at least partially disposed inside the connecting housing 36.
[0099] In this embodiment, the handle device 30 may further include Figure 7 The pressure sensor 37 has the same structure as the pressure sensor 19a in the text, and will not be described in detail here.
[0100] Figure 16 The image shown is another type that can be adapted. Figure 1 The handle assembly 40 of the tool host 20 is configured to connect to the tool host 20. Figure 1 The tool body 20 is located in the tool. The handle device 40 includes an operating element 41 and a connecting rod assembly 42. The operating element 41 includes a grip portion 411 for a user to hold, and the connecting rod assembly 42 is used to connect the operating element 41 to the tool body 20.
[0101] like Figures 16 to 22 As shown, the operating component 41 also includes a trigger 412 and a mounting housing 413. The trigger 412 is rotatably connected to the mounting housing 413 and is used to control the operation of the control unit 22. The mounting housing 413 is used to mount the trigger 412 and to connect the operating component 41 to the connecting rod assembly 42.
[0102] The connecting rod assembly 42 includes a first connecting rod 421, which connects the operating member 41 and the tool body 20. The first connecting rod 421 extends along a first straight line 41a and includes a first upper rod portion 421a and a first lower rod portion 421b. A first end 421c of the first upper rod portion 421a is connected to the operating member 41, and a second end 421d of the first upper rod portion 421a is connected to the first lower rod portion 421b. The first lower rod portion 421b is also connected to the tool body 20. The first upper rod portion 421a is slidable relative to the first lower rod portion 421b along the first straight line 41a. Figure 17 The contraction position shown and Figure 16The diagram shows the extended position. When the first upper rod 421a slides to the retracted position, the size of the handle device 40 along the first straight line 41a decreases, and the handle device 40 is in the retracted state. When the first upper rod 421a slides to the extended state, the size of the handle device 40 along the first straight line 41a increases, and the handle device 40 is in the extended state. In this embodiment, the retracted position refers to the position where the first upper rod 421a slides to the position where the size of the handle device 40 along the first straight line 41a is the smallest, and the extended position refers to the position where the first upper rod 421a slides to the position where the size of the handle device 40 along the first straight line 41a is the largest. Of course, it is understood that in other embodiments, the handle device 40 may also be in an intermediate state between the retracted state and the extended state. When the handle device 40 is in an intermediate state, the size of the handle device 40 along the first straight line 41a is between the smallest and largest sizes of the handle device 40.
[0103] In this embodiment, the handle device 40 further includes a control device 43, which is electrically or communicatively connected to the control unit 22 in the tool host 20. The control unit 22 includes a cutting motor 222 and a drive motor 221. The control device 43 can control the operation of the control unit 22, for example, controlling the operation of the cutting motor 222 or the drive motor 221. In some embodiments, the control device 43 can control whether the cutting motor 222 or the drive motor 221 is started. In some embodiments, the control device 43 can also control the rotational speed of the drive motor 221 or the rotational speed of the cutting motor 222. In some embodiments, the control device 43 can control the operating mode of the drive motor 221 or the operating mode of the cutting motor 222.
[0104] In this embodiment, the control device 43 is installed on the operating component 41. Thus, the trigger 412 and other electronic components in the operating component 41 can be connected to the control device 43, and signals are transmitted to the tool host 20 via the control device 43. The trigger 412 and other electronic components are all connected to the control device 43, which controls the operation of the control unit 22 or other electrical appliances in the tool host 20. For example, the safety switch 414 in the operating component 41 is electrically connected to the control device 43, and the speed regulating device in the operating component 41 is also electrically connected to the control device 43.
[0105] The handle assembly 40 also includes a detection device 44, which includes a first detection element 441 for detecting the extension / retraction state of the handle assembly 40. The first detection element 441 can detect whether the handle assembly 40 is in a retracted or extended state. The first detection element 441 is also electrically or communicatively connected to the control device 43. Thus, the first detection element 441 can send detection information to the control device 43, and the control device 43 controls the control unit 22 based on the detection information from the first detection element 441. In this embodiment, the first detection element 441 is electrically or communicatively connected to the control device 43 installed in the handle assembly 40. This allows the information from the first detection element 441 to be transmitted to the control device 43, which then controls the control unit 22. This reduces the number of electrical connections in the lawnmower, reducing costs and improving the reliability of information transmission. Furthermore, it facilitates the modular design of the handle assembly 40, allowing it to be adapted to more types of tool hosts 20. In other words, the handle device 40 can also be adapted to other functional tool main units 20, thus enabling the push-type power tool with the handle device 40 to achieve more functions. For example, the push-type power tool can be a snowplow, and the handle device 40 can be installed on the snowplow main unit to realize the snowplow function.
[0106] The control device 43 is configured to control the operation of the cutting motor 222 based on the detection information from the first detection element 441. When the first detection element 441 detects that the handle device 40 is in the retracted state, the control device 43 prevents the cutting motor 222 from being started. This ensures user safety by preventing the cutting motor 222 from starting even if the user mistakenly operates the trigger 412 and / or the safety switch 414. When the first detection element 441 detects that the handle device 40 is in the extended state, the control device 43 allows the cutting motor 222 to be started. When the handle device 40 is in an intermediate state, the control device 43 prevents the cutting motor 222 from starting. Alternatively, in other embodiments, the control device 43 allows the cutting motor 222 to start when the handle device 40 is in an intermediate state and locked in that state. For example, the first detection element 441 detects a parameter value that can be compared with a preset parameter value. When the parameter value does not reach the preset parameter value, the control device 43 prevents the cutting motor 222 from starting. Thus, the control device 43 can control the handle device 40 to be in a retracted state or a partially intermediate state to prevent the cutting motor 222 from starting. In this embodiment, when the parameter value increases to the preset parameter value, the control device 43 enables the cutting motor 222 to start. In other embodiments, when the parameter value decreases to the preset parameter value, the control device 43 prevents the cutting motor 222 from starting.
[0107] In some embodiments, the control device 43 is configured to control the operation of the drive motor 221 based on the detection information of the first detection element 441. When the first detection element 441 detects that the handle device 40 is in a retracted state, the control device 43 controls the drive motor 221 to not start. When the first detection element 441 detects that the handle device 40 is in an extended state, the control device 43 controls the drive motor 221 to start.
[0108] In some embodiments, the control device 43 is configured to control the operation of the drive motor 221 and the cutting motor 222 based on the detection information from the first detection element 441. When the first detection element detects that the handle device 40 is in a retracted state, the control device 43 prevents both the drive motor 221 and the cutting motor 222 from starting. When the first detection element 441 detects that the handle device 40 is in an extended state, the control device 43 allows the drive motor 221 and the cutting motor 222 to start.
[0109] In this embodiment, the first detection element 441 is mounted to the first upper rod portion 421a. The first detection element 441 is electrically connected to the control device 43 via the first connecting line 442. Mounting the first detection element 441 to the first upper rod portion 421a allows for a longer first connecting line 442 connected to the control device 43, and also simplifies the arrangement of the first connecting line 442.
[0110] Specifically, the mounting housing 413 of the operating member 41 forms a first receiving cavity 413a, and the control device 43 is disposed within the first receiving cavity 413a. The first connecting rod 421 is a tube, and the first detection element 441 is mounted to the second end 421d of the first upper rod portion 421a, which is close to the first lower rod portion 421b. A mounting member 421d is provided at the second end 421d, and the first detection element 441 is mounted to the mounting member 421d. The first detection element 441 may be at least partially located inside the first upper rod portion 421a. A first connecting line 442 passes through the first upper rod portion 421a to connect the first detection element 441 and the control device 43.
[0111] In this embodiment, the handle device 40 further includes a second connecting rod 422, which connects the operating member 41 and the tool body 20. The second connecting rod 422 and the first connecting rod 421 are disposed at opposite ends of the operating member 41. The second connecting rod 422 extends along a second straight line 41b, which is parallel to the first straight line 41a. The second connecting rod 422 includes a second upper rod portion 422a and a second lower rod portion 422b. The second upper rod portion 422a is connected to the operating member 41, and the second lower rod portion 422b is connected to the tool body 20. The second upper rod portion 422a can slide relative to the second lower rod portion 422b to a retracted position and an extended position.
[0112] The handle device 40 also includes a second connecting line 431 connecting the control device 43 and the control unit 22. In this embodiment, one end of the second connecting line 431 is disposed within the first receiving cavity 413a and connected to the control device 43, while the other end is disposed within the tool body 20 and connected to the control unit 22. The second connecting rod 422 is a hollow tube, through which the second connecting line 431 passes. Thus, the first connecting line 442 is disposed within the first connecting rod 421, and the second connecting line 431 is disposed within the second connecting rod 422, allowing for better arrangement of the first connecting line 442 and the second connecting line 431.
[0113] The control device 43 includes a circuit board 432, and a first connecting line 442 and a second connecting line 431 are both connected to the circuit board 432. The circuit board 432 is housed in a first receiving cavity 413a.
[0114] It is understandable, of course, that in other embodiments, the second connecting line 431 may also pass through the first connecting rod 421.
[0115] In this embodiment, the first detection element 441 is a switching element, specifically a Hall sensor. The Hall sensor is electrically connected to the control device 43 via a first connecting line 442, and the Hall sensor is at least partially disposed within the first connecting rod 421. The detection device 44 also includes a second detection element 443 that cooperates with the first detection element 441. The second detection element 443 is a trigger element that cooperates with the switching element. Specifically, the second detection element 443 is a magnetic element or a magnetically conductive element that cooperates with the Hall sensor. The second detection element 443 is fixed relative to the first lower rod portion 421b. The second detection element 443 can be installed to the first lower rod portion 421b or installed in a housing fixedly connected to the first lower rod portion 421b. In this embodiment, the handle device 40 also includes a connecting housing 46, which is fixedly connected to the first lower rod portion 421b, and the second detection element 443 is installed in the connecting housing 46. The connecting housing 46 connects the first connecting rod 421 and the second connecting rod 422. The handle device 40 includes a locking device 45 for locking the first connecting rod 421, and the locking device 45 is mounted to the connecting housing 46. A second detection element 443 is mounted to the connecting housing 46. The second detection element 443 is a magnetic element, and the magnetic element is at least partially disposed within the connecting housing 46. It is understood that in other embodiments, the first detection element 441 may also be other switching elements. Figure 22 and Figure 23As shown, the switching element is a contact switch 51, which includes a switch 51a located within the first upper lever portion 421a and a triggered element 51b connected to the switch 51a. The second detection element 443 is a triggered element mounted to the first lower lever portion 421b or connected to the housing 46. Specifically, the triggered element can be the inner wall 421f of the first lower lever portion 421b. The first lower lever portion 421b also has a hole 421e. When the handle device 40 is in the extended state, as... Figure 22 As shown, the first upper rod 421a slides to the position where the triggered member 51b corresponds to the hole 421e. The hole 421e releases the triggered member 51b, the contact switch 51 is in the open state, the detection device 44 detects that the handle device 40 is in the extended state, and the control device 43 allows the cutting motor 222 to start. When the handle device 40 is in the retracted state, as... Figure 23 As shown, when the first upper rod 421a slides to a position where the triggered member 51b does not correspond to the hole 421e, the inner wall 421f of the first lower rod 421b does not release the triggered member 51b, the contact switch 51 is in the closed state, the detection device 44 detects that the handle device 40 is in the retracted state, and the control device 43 prevents the cutting motor 222 from starting. Similarly, when the handle device 40 is in the intermediate state, the triggered member 51b does not correspond to the hole 421e, the contact switch 51 is in the closed state, and the control device 43 prevents the cutting motor 222 from starting.
[0116] In this embodiment, the handle device 40 may further include Figure 7 Pressure sensor 47, which has the same structure as pressure sensor 19a, will not be described in detail here.
[0117] It should be noted that the terms "first" and "second" in this application are used only to distinguish each other, and the naming rules for "first" and "second" can be interchanged.
Claims
1. A hand-operated power tool, comprising: The tool host includes working components and a control unit for controlling the operation of the working components; Handle device, connected to the tool body; The handle device includes: The operating element includes a grip for the user to hold; A connecting rod assembly includes a first connecting rod connected to the main tool body. The first connecting rod includes a first lower rod portion and a first upper rod portion. The first lower rod portion is connected to the main tool body, and the first upper rod portion is connected to the operating element. The first upper rod portion can slide relative to the first lower rod portion along a first straight line to a retracted position and an extended position. When the first upper rod portion is in the retracted position, the handle device is in a retracted state, and when the first upper rod portion is in the extended position, the handle device is in an extended state. The detection device includes a first detection element for detecting the extension / retraction state of the handle device; A control device is installed on the operating component, and the first detection element is electrically or communicatively connected to the control device. The control device is configured to control the control unit based on the detection information of the first detection element; the first detection element is electrically connected to the control device via a first connecting line; the handle device further includes a second connecting line connecting the control device and the control unit; the first connecting rod is connected to one end of the operating member, and the handle device further includes a second connecting rod connected to the other end of the operating member, with the second connecting line passing through the second connecting rod.
2. The hand-operated power tool according to claim 1, wherein, The first detection element is a Hall sensor.
3. The hand-operated power tool according to claim 2, wherein, The detection device further includes a second detection element, which is a magnetic component or a magnetically conductive component that cooperates with the Hall sensor. The second detection element is installed in the first lower rod or in a housing that is fixedly connected to the first lower rod.
4. The hand-operated power tool according to claim 1, wherein, The operating component includes a mounting housing connected to the grip or the first connecting rod, and the control device is disposed within the mounting housing.
5. The hand-operated power tool according to claim 1, wherein, The second connecting line passes through the first connecting rod.
6. The hand-operated power tool according to claim 1, wherein, The operating component includes a mounting housing connected to the grip or the first connecting rod, and the first detection element is at least partially disposed within the mounting housing.
7. The hand-operated power tool according to claim 6, wherein, The first detection element is disposed at one end of the mounting housing near the first connecting rod.
8. The hand-operated power tool according to claim 7, wherein, The handle device further includes: a second connecting rod connecting the operating element and the tool host, and a connecting housing connecting the first connecting rod and the second connecting rod. The detection device further includes a second detection element, the first detection element being a Hall sensor, and the second detection element being a magnetic element or a magnetically conductive element that cooperates with the Hall sensor. The second detection element is at least partially disposed within the connecting housing.
9. The hand-operated power tool according to claim 1, wherein, The first detection element is installed at the end of the first upper rod near the first lower rod.
10. The hand-operated power tool according to claim 9, wherein, The first detection element is located at least partially inside the first upper rod portion.
11. The hand-operated power tool according to claim 10, wherein, The first connecting line passes through the first upper rod portion to connect to the control device.
12. The hand-operated power tool according to claim 11, wherein, The first detection element is a switching element, and the detection device further includes a trigger element that cooperates with the switching element.
13. The hand-operated power tool according to claim 12, wherein, The first detection element is a Hall sensor, and the trigger is a magnetic element or a magnetically conductive element that cooperates with the Hall sensor.
14. The hand-operated power tool according to claim 11, wherein, The first detection element is a contact switch.
15. The hand-operated power tool according to claim 1, wherein, The control device is configured to prevent the control unit from operating when the detection information of the first detection element increases or decreases to a preset parameter value.
16. A handle device, comprising: The operating element includes a grip for the user to hold; A connecting rod assembly includes a first connecting rod connected to a tool host. The first connecting rod includes a first lower rod portion and a first upper rod portion. The first lower rod portion is connected to the tool host, and the first upper rod portion is connected to the operating element. The first upper rod portion can slide relative to the first lower rod portion along a first straight line to a retracted position and an extended position. When the first upper rod portion is in the retracted position, the handle device is in a retracted state, and when the first upper rod portion is in the extended position, the handle device is in an extended state. The detection device includes a first detection element for detecting the extension / retraction state of the handle device; A control device is installed on the operating component, and the first detection element is electrically or communicatively connected to the control device. The control device is configured to control the working components of the tool host to operate based on the detection information from the first detection element; the first connecting rod is connected to one end of the operating component, and the handle device further includes: The second connecting rod is connected to the other end of the operating component and to the second detection element that cooperates with the first detection element; The first detection element is a Hall sensor; the second detection element is a magnetic element or a magnetic permeability element; the Hall sensor is disposed inside the first upper rod portion and connected to the control device through the first connecting line; the second detection element is installed in the first lower rod portion or in a housing fixedly connected to the first lower rod portion.
17. A lawnmower, comprising: The tool host includes a cutting assembly and a cutting motor for controlling the cutting assembly to perform cutting functions; Handle device, connected to the tool body; The handle device includes: The operating element includes a grip for the user to hold; A connecting rod assembly includes a first connecting rod connected to the main tool body. The first connecting rod includes a first lower rod portion and a first upper rod portion. The first lower rod portion is connected to the main tool body, and the first upper rod portion is connected to the operating element. The first upper rod portion can slide relative to the first lower rod portion along a first straight line to a retracted position and an extended position. When the first upper rod portion is in the retracted position, the handle device is in a retracted state, and when the first upper rod portion is in the extended position, the handle device is in an extended state. The detection device includes a first detection element for detecting the extension / retraction state of the handle device; A control device is installed on the operating component, and the first detection element is electrically or communicatively connected to the control device. The control device is configured to control the cutting motor based on the detection information of the first detection element; the first detection element is a Hall sensor, which is located inside the first connecting rod and connected to the control device through a first connecting line. A plug is provided at the lower end hole of the upper part of the first connecting rod, and the Hall sensor is installed on the plug.