Power tool

Abstract

The utility model provides a kind of electric tool, including main body, the connecting assembly being connected with main body, main control module and first power supply being set on main body and user control module being set on connecting assembly, first power supply is electrically connected with main control module;Electric tool further includes second power supply, second power supply is set on connecting assembly, second power supply is electrically connected with user control module, and second power supply is used to power supply for user control module;The battery capacity of first power supply is greater than the battery capacity of second power supply.The user control module of the electric tool uses independent power supply, to reduce the use of wiring harness, save wiring harness cost, reduce assembly difficulty, and improve the security and reliability of use and the beauty of equipment.

Description

Technical Field

[0001] This utility model relates to the field of power tool structure technology, and in particular to a power tool. Background Technology

[0002] Currently, the control module of a lawnmower with self-propelled function mainly consists of two parts: the main control module and the user control module (i.e., the control panel). The user control module is used for user operation. The user control module can communicate with the main control module to control the operation of the lawnmower's walking drive motor and mowing motor through the main control module, thereby realizing the lawnmower's self-propelled function and mowing function.

[0003] Currently, the main control module is generally located on the main body of the lawnmower, while the user control module is located on the connecting components of the lawnmower. The main body of the lawnmower also has a battery pack, which is electrically connected to the main control module. The user control module is wired to the main control module via a wiring harness to enable communication between the two and to power the user control module. This wired connection method increases the cost and assembly difficulty of the equipment to some extent. In addition, during the use of the equipment, as the connecting components fold and expand, the wiring harness is at risk of aging and breakage, affecting the safety and reliability of use. Moreover, the exposed wiring harness also affects the aesthetics of the equipment. Utility Model Content

[0004] The purpose of this utility model is to provide an electric tool in which the user control module is independently powered, thereby reducing the use of wiring harnesses, saving wiring harness costs, reducing assembly difficulty, and improving the safety, reliability, and aesthetics of the equipment.

[0005] This utility model provides an electric tool, including a main body, a connecting component connected to the main body, a main control module and a first power supply disposed on the main body, and a user control module disposed on the connecting component. The first power supply is electrically connected to the main control module. The electric tool also includes a second power supply disposed on the connecting component and electrically connected to the user control module. The second power supply is used to supply power to the user control module. The battery capacity of the first power supply is greater than the battery capacity of the second power supply.

[0006] In one possible implementation, the second power supply is located on the user control module.

[0007] In one possible implementation, the second power supply can power the user control module, and the second power supply is detachably / non-detachably connected to the user control module; the user control module is provided with a charging interface, which is electrically connected to the second power supply; the charging interface is used to connect to an external power source to charge the second power supply.

[0008] In one possible implementation, the second power supply is detachably connected to the user control module; the power tool can also be connected to a charger (an external device charger or one that comes with the power tool), the charger being used to connect the second power supply and the external power supply to charge the second power supply.

[0009] In one possible implementation, the power tool further includes an internal charging assembly electrically connected to both the first power supply and the second power supply; the first power supply is capable of charging the second power supply via the internal charging assembly.

[0010] In one possible implementation, the internal charging assembly includes a first charging module and a second charging module. The first charging module is disposed on the main body and is electrically connected to the first power supply. The second charging module is disposed on the connection assembly and is electrically connected to the second power supply.

[0011] The connecting component is rotatably connected to the main body. When the connecting component rotates relative to the main body, it has a folded state and an unfolded state. When the connecting component is in the folded state, the first charging module and the second charging module are in contact or close to each other. At this time, the first power supply can charge the second power supply through the first charging module and the second charging module.

[0012] In one possible implementation, the connecting assembly includes a lower connection and an upper connection, one end of the lower connection is rotatably connected to the main body, and the other end of the lower connection is retractably connected to one end of the upper connection. The user control module is installed on the end of the upper connection away from the lower connection. A telescopic control assembly is provided at the connection between the lower connection and the upper connection, and the telescopic control assembly is used to control the relative telescopic movement of the upper connection and the lower connection.

[0013] When the connecting component is in a folded state, the telescopic control component is close to or in contact with the front end of the first power supply; the second charging module is disposed on the telescopic control component, and the first charging module is disposed on the front end of the first power supply.

[0014] In one possible implementation, the second power supply is located on the user control module; the second charging module and the second power supply are electrically connected by a wire, which runs through the upper connection.

[0015] In one possible implementation, one of the first charging module and the second charging module includes a male connector and the other includes a female connector; when the connecting component is in a folded state, the male connector is in contact with the female connector, at which time the first power supply can charge the second power supply through the male connector and the female connector;

[0016] Alternatively, the first charging module includes an electromagnetic transmitting device, and the second charging module includes an electromagnetic receiving device; when the connecting component is in a folded state, the electromagnetic transmitting device and the electromagnetic receiving device are close to or in contact with each other, and at this time the first power supply can charge the second power supply through the electromagnetic transmitting device and the electromagnetic receiving device.

[0017] In one possible implementation, the user control module includes a first control unit, and the main control module includes a second control unit; the power tool further includes a wireless communication module, which includes a first wireless communication unit and a second wireless communication unit. The first wireless communication unit is disposed on the connecting component and is electrically connected to the first control unit; the second wireless communication unit is disposed on the main body or the connecting component and is electrically connected to the second control unit. The first wireless communication unit is capable of establishing a wireless communication link with at least the second wireless communication unit and / or an external terminal device, and the user control module and the main control module transmit control signals through the wireless communication link.

[0018] In one feasible manner, the power tool is a lawnmower or a snowplow.

[0019] The power tool provided by this utility model has a second power supply that can independently power the user control module, thus eliminating the need to use the first power supply to power the user control module. Therefore, there is no need to install a power cable between the main control module and the user control module, thereby reducing the use of wiring harnesses, saving wiring harness costs, reducing assembly difficulty, reducing the risks inherent in the wiring harness itself, improving the safety and reliability of use, and enhancing the aesthetics of the equipment. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of a lawnmower in the prior art.

[0021] Figure 2This is a three-dimensional structural diagram of the power tool in the first embodiment of this utility model.

[0022] Figure 3 for Figure 2 A bottom view.

[0023] Figure 4 This is a schematic diagram of the signal transmission between the user control module and the main control module in the first embodiment of this utility model.

[0024] Figure 5 This is a schematic diagram showing the electrical connection relationship between the first power supply, the second power supply, and other components in the first embodiment of this utility model.

[0025] Figure 6 This is a schematic diagram showing the electrical connection relationship between the first power supply, the second power supply, and other components in another embodiment of the present invention.

[0026] Figure 7 This is a schematic diagram showing the electrical connection relationship between the first power supply, the second power supply, and other components in the second embodiment of this utility model. Detailed Implementation

[0027] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0028] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and claims of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0029] like Figure 1As shown, the main control module (not shown) of a conventional lawnmower is typically located on the main body 1 of the lawnmower, while the user control module 4 is located on the connecting assembly 2. The main body 1 also has a battery pack 10, which is electrically connected to the main control module. The main control module and the user control module 4 are connected via a relatively long wiring harness 40. This harness 40 enables the main control module to supply power to the user control module 4 and facilitates communication between the two (i.e., the harness 40 includes both power and communication lines). In other words, they transmit signals and are electrically connected via a wired connection. Both the main control module and the user control module 4 are powered by the battery pack 10. The user control module 4 transmits detected switch signals to the main control module. The main control module controls the motor operation based on the received switch signals and simultaneously sends operating status information to the user control module 4. Since the user control module 4 and the main control module are connected by wire harness 40, this increases the cost and assembly difficulty of the equipment to some extent. At the same time, during the use of the equipment, as the connecting component 2 folds and expands, the wire harness 40 is at risk of aging and breaking, which affects the safety and reliability of use. Moreover, the exposed wire harness 40 also affects the aesthetics of the equipment.

[0030] To address the aforementioned problems, this application proposes the following solution:

[0031] First Embodiment

[0032] like Figures 2 to 5 As shown, the first embodiment of this utility model provides a power tool, including a main body 1 (i.e., chassis), a connecting component 2 connected to the main body 1, a main control module 3 and a first power supply 15 disposed on the main body 1, and a user control module 4 (i.e., control panel) disposed on the connecting component 2. The first power supply 15 is electrically connected to the main control module 3, the travel drive motor 12, and the work drive motor 14, respectively. The first power supply 15 is used to supply power to the main control module 3, the travel drive motor 12, and the work drive motor 14 (of course, the first power supply 15 can also supply power to other components on the main body 1, such as the lighting module on the main body 1). Generally, the first power supply 15 is detachably connected to the main body 1 to facilitate charging of the first power supply 15; the main control module 3 is disposed below the power supply module 15.

[0033] The user control module 4 includes a first control unit 41, and the main control module 3 includes a second control unit 31. In this embodiment, both the first control unit 41 and the second control unit 31 are MCUs (Microcontroller Units). The main body 1 is provided with a walking component 11 for supporting the main body 1, a walking drive motor 12 for driving the walking component 11 to rotate, a working part 13 for performing tasks, and a working drive motor 14 for driving the working part 13 to operate. The walking component 11 specifically includes rollers. The second control unit 31 is electrically connected to the walking drive motor 12 and the working drive motor 14 respectively. The main body 1 serves as the primary support structure for the power tool, assembling all parts into a single unit. The walking component 11 can rotate relative to the main body 1, allowing the main body 1 to move on the ground. The walking drive motor 12 is connected to the walking component 11 via a transmission mechanism (not shown), thereby driving the walking component 11 to rotate through the transmission mechanism. The working drive motor 14 drives the working part 13 to perform tasks (such as mowing lawns, snowplowing, etc.). The connecting component 2 allows the user to push the power tool. The user control module 4 allows the user to operate the tool. The first control unit 41 and the second control unit 31 can communicate with each other, that is, the user control module 4 can communicate with the main control module 3, thereby controlling the operation of the walking drive motor 12 and the working drive motor 14 through the main control module 3 based on the user's operation.

[0034] Specifically, the connecting component 2 is rotatably connected to the main body 1, and the connecting component 2 is retractable, thus giving the connecting component 2 a folding and retractable storage function. When the connecting component 2 rotates relative to the main body 1, the connecting component 2 has a folded state (not shown in the figure) and an unfolded state (i.e., as shown in the figure). Figure 2 (As shown in the diagram) and can switch between two states. When the power tool is in working state, the connecting component 2 rotates backward relative to the main body 1 and is in an unfolded state. At this time, the connecting component 2 is located behind the main body 1, and the angle between the connecting component 2 and the main body 1 is greater than 90° and less than 180° (that is, the angle between the connecting component 2 and the horizontal direction is greater than 90° and less than 180°). At this time, the user can push the power tool to move by the connecting component 2, and at the same time, the user can control the operation of the power tool by operating the main control module 4. When the power tool is not in working state, the connecting component 2 rotates forward relative to the main body 1 and is in a folded state. At this time, the connecting component 2 is close to the main body 1, thereby saving the space occupied by the equipment and making it easy to store.

[0035] The power tool also includes a second power supply 45, which is disposed on the connection assembly 2 and electrically connected to the user control module 4. The second power supply 45 is used to supply power to the user control module 4. The battery capacity of the first power supply 15 is greater than the battery capacity of the second power supply 45, wherein the battery capacity is the total amount of charge that the batteries in at least the power supply can store and release; wherein the first power supply and / or the second power supply includes at least one battery pack.

[0036] In this system, the first power supply 15 is typically a large battery (specifically, a large battery pack), while the second power supply 45 is typically a small battery. That is, the volume, battery capacity, and supply voltage of the first power supply 15 are generally larger than those of the second power supply 45. The second power supply 45 can specifically use button batteries, pouch batteries, cylindrical batteries, etc. The second power supply 45 generally uses rechargeable batteries.

[0037] This power tool is equipped with a second power supply 45, which can independently power the user control module 4, thus eliminating the need to use the first power supply 15 to power the user control module 4. Therefore, there is no need to install a power cable between the main control module 3 and the user control module 4, thereby reducing the use of wiring harnesses, saving wiring harness costs, reducing assembly difficulty, reducing the risks inherent in the wiring harness itself, improving the safety and reliability of use, and enhancing the aesthetics of the equipment.

[0038] like Figure 2 and Figure 4 As shown, in one embodiment, the power tool further includes a wireless communication module 5. The wireless communication module 5 includes a first wireless communication unit 51 and a second wireless communication unit 52. The first wireless communication unit 51 is electrically connected to the first control unit 41, and the second wireless communication unit 52 is electrically connected to the second control unit 31. The first wireless communication unit 51 is disposed on the connecting component 2, and the second wireless communication unit 52 is disposed on the main body 1 or the connecting component 2. The distance between the first wireless communication unit 51 and the second wireless communication unit 52 is greater than or equal to 0.5 meters and less than or equal to 5 meters (or greater than or equal to 0.5 meters and less than or equal to 2 meters). The first wireless communication unit 51 is at least capable of establishing a wireless communication link with the second wireless communication unit 52 and / or the external terminal device 8 (i.e., the first wireless communication unit 51 is at least capable of wireless communication with the second wireless communication unit 52 and / or the external terminal device 8), so that the first control unit 41 and the second control unit 31 can communicate wirelessly through the wireless communication module 5, thereby enabling the user control module 4 and the main control module 3 to transmit control signals through the wireless communication link (i.e., the user control module 4 and the main control module 3 can communicate wirelessly through the wireless communication module 5).

[0039] By setting up the wireless communication module 5, the user control module 4 and the main control module 3 communicate wirelessly through the wireless communication module 5. Therefore, there is no need to set up a communication line between the main control module 3 and the user control module 4, thereby further reducing the use of wiring harnesses (that is, changing wired communication to wireless communication).

[0040] The external terminal device 8 can be a user's mobile terminal device (such as a mobile phone, computer, etc.), remote control, etc. By setting the first wireless communication unit 51 to communicate wirelessly with the external terminal device 8, the user can control the operation of the power tool through the external terminal device 8 (such as through a mobile APP).

[0041] In one implementation, the wireless communication module 5 includes a Bluetooth communication module, the first wireless communication unit 51 includes a first Bluetooth module, and the second wireless communication unit 52 includes a second Bluetooth module. The first Bluetooth module is capable of establishing a wireless communication link with at least the second Bluetooth module and / or the external terminal device 8 (i.e., the first Bluetooth module is capable of Bluetooth wireless communication with at least the second Bluetooth module and / or the external terminal device 8). Bluetooth technology, as a low-power, low-cost, short-range wireless communication technology, allows two devices to connect directly and exchange data without network infrastructure. The maximum transmission distance of Bluetooth signals is 10 cm to 10 meters, which can be increased to 100 meters by increasing the transmission power. The distance between the user control module 4 and the main control module 3 is about 2 meters, achieving good transmission performance within the optimal Bluetooth signal transmission range. Furthermore, the Bluetooth module has no specific limitations on installation angle and position; therefore, this solution does not require specific structural design for signal transmission and reception, saving on R&D and assembly costs. For details on the specific device structure and working principle of Bluetooth communication technology, please refer to existing technologies, which will not be elaborated here. In this embodiment, the first Bluetooth module includes a first sub-Bluetooth module and a second sub-Bluetooth module; the first sub-Bluetooth module establishes a wireless communication link with the second Bluetooth module, and the second sub-Bluetooth module is used to establish a wireless communication link with the external terminal device 8.

[0042] In another implementation, the wireless communication module 5 includes an infrared communication module. The first wireless communication unit 51 includes a first infrared transceiver unit, and the second wireless communication unit 52 includes a second infrared transceiver unit. The first infrared transceiver unit can establish a wireless communication link with the second infrared transceiver unit (i.e., the first infrared transceiver unit can perform infrared wireless communication with the second infrared transceiver unit). The first infrared transceiver unit includes a first infrared transmitting unit and a first infrared receiving unit, and the second infrared transceiver unit includes a second infrared transmitting unit and a second infrared receiving unit. The first infrared receiving unit can receive infrared signals emitted by the second infrared transmitting unit, and the second infrared receiving unit can receive infrared signals emitted by the first infrared transmitting unit. The infrared transmitting unit mainly includes devices such as an infrared emitting tube for emitting infrared rays, and the infrared receiving unit mainly includes devices such as an infrared receiving tube for receiving infrared rays. The first wireless communication unit 51 also includes a third Bluetooth module, which is used to establish a wireless communication link with the external terminal device 8.

[0043] Since the signal transmission medium for infrared communication is near-infrared light, the structure needs to consider the transmission of infrared light. To ensure smooth wireless communication between the first and second infrared transceiver units during operation, when the connecting component 2 is in the extended state, both the first and second infrared transceiver units are positioned on the plane of the connecting component 2, allowing them to align with each other and establish a wireless communication link. Specifically, the first wireless communication unit 51 and the second wireless communication unit 52 can be positioned on the user control module 4, and the second wireless communication unit 52 can be positioned on the telescopic control component 23, ensuring that the first wireless communication unit 51 is always aligned with the second wireless communication unit 52 (details will be provided later), thus guaranteeing smooth transmission of infrared signals. For specific device structures and working principles of infrared communication technology, please refer to existing technologies; details are not elaborated here.

[0044] In another implementation, the wireless communication module 5 includes a radio frequency (RF) communication module. The first wireless communication unit 51 includes a first RF transceiver unit, and the second wireless communication unit 52 includes a second RF transceiver unit. The first RF transceiver unit can establish a wireless communication link with the second RF transceiver unit (i.e., the first RF transceiver unit can perform RF wireless communication with the second RF transceiver unit). The first wireless communication unit 51 also includes a third Bluetooth module, which is used to establish a wireless communication link with the external terminal device 8. Radio frequency (RF) is short for radio frequency current, a type of high-frequency alternating electromagnetic wave. RF technology is a technology for signal transmission and processing within the radio wave frequency range. Similar to Bluetooth communication, RF technology is a low-power, low-cost, short-range wireless communication technology with wide applications in consumer electronics. Its working principle is to modulate the information source (analog or digital signal) with a high-frequency current (amplitude modulation or frequency modulation) to form an RF signal, which is then transmitted into the air through an antenna. The RF signal is received at a long distance and demodulated to restore the electrical information source. RF transceiver units generally include transmitter circuits, receiver circuits, and antennas. Since radio frequency (RF) signals are radiated into space through an antenna, there are no specific restrictions on the installation angle of the RF transceiver unit, further reducing assembly difficulty. For details on the specific device structure and working principle of RF communication technology, please refer to existing technologies; they will not be elaborated here.

[0045] In another implementation, the wireless communication module 5 includes a star-flash communication module, the first wireless communication unit 51 includes a first star-flash module, and the second wireless communication unit 52 includes a second star-flash module. The first star-flash module is capable of establishing a wireless communication link with at least the second star-flash module and / or the external terminal device 8 (i.e., the first star-flash module is capable of performing star-flash wireless communication with at least the second star-flash module and / or the external terminal device 8). By setting the star-flash communication module, two communication domains are formed between the main control module 3, the user control module 4, and the external terminal device 8. The main control module 3 and the user control module 4 form the first communication domain, and the user control module 4 and the external terminal device 8 form the second communication domain. That is, the first star-flash module can handle both communication within the device and communication outside the device. Before the advent of StarSpeed ​​technology, the main solutions for short-range wireless communication were Bluetooth and Wi-Fi. However, these two standards were separate: Bluetooth focused on low power consumption, while Wi-Fi prioritized high efficiency. Each had its strengths but was incompatible. StarSpeed ​​technology, as a new generation of short-range wireless communication technology, broke down the technical barriers between Bluetooth and Wi-Fi, acting as a "perfect combination" of the two, integrating their advantages and significantly improving power consumption, transmission speed, stability, and coverage. Furthermore, StarSpeed ​​modules have no specific restrictions on installation angle, further reducing assembly difficulty. For details on the specific device structure and working principle of StarSpeed ​​communication technology, please refer to existing technologies; they will not be elaborated upon here.

[0046] like Figure 2 and Figure 4 As shown, in one implementation, the user control module 4 also includes interactive controls, including a walking motor switch 43 and a working motor switch 44, both of which are electrically connected to the first control unit 41. The walking motor switch 43 is operated by the user to control the operation of the walking drive motor 12 (the walking motor switch 43 can control the start / stop and working gear of the walking drive motor 12, etc.); the working motor switch 44 is operated by the user to control the operation of the working drive motor 14 (the working motor switch 44 can control the start / stop and working gear of the working drive motor 14, etc.). The main control module 3 also includes a first control circuit 32 and a second control circuit 33 (both the first control circuit 32 and the second control circuit 33 include various electronic components, such as resistors, inductors, and switching elements). The second control unit 31 is electrically connected to the walking drive motor 12 through the first control circuit 32, and the second control unit 31 is electrically connected to the working drive motor 14 through the second control circuit 33. Of course, the interactive controls also include other control elements, which will not be described in detail here.

[0047] like Figure 2 and Figure 4 As shown, in one embodiment, the first power supply 15 is electrically connected to the second control unit 31 so that the second control unit 31 can obtain the status information (e.g., voltage, power, operating temperature, etc.) of the power module 15. The second power supply 45 is electrically connected to the first control unit 41 so that the first control unit 41 can obtain the status information (e.g., voltage, power, operating temperature, etc.) of the second power supply 45.

[0048] like Figure 2 and Figure 4As shown, in one embodiment, the connecting component 2 includes a lower connection 21 and an upper connection 22 arranged in parallel, with the lower connection 21 and upper connection 22 located on the left and right sides of the main body 1, respectively. One end of the lower connection 21 is rotatably connected to the main body 1, and the other end of the lower connection 21 is retractably connected to one end of the upper connection 22. Specifically, both the lower connection 21 and the upper connection 22 are hollow tubular structures, with the upper connection 22 fitted inside the lower connection 21, and the upper connection 22 can be retracted and stored inside the lower connection 21. The user control module 4 is installed at the end of the upper connection 22 away from the lower connection 21, and the left and right ends of the user control module 4 are connected to the upper connections 22 on the left and right sides, respectively. The connecting component 2 also includes a handle 24, which is connected to the end of the upper connection 22 away from the lower connection 21. The handle 24 is used for the user to hold and push the power tool. A telescopic control component 23 is provided at the connection between the lower connection 21 and the upper connection 22. The left and right ends of the telescopic control component 23 are respectively connected to the lower connection 21 on the left and right sides. The telescopic control component 23 is used to control the relative telescopic movement of the upper connection 22 and the lower connection 21. That is, the telescopic control component 23 can lock the upper connection 22 and the lower connection 21 so that the connection component 2 remains in the extended or retracted state.

[0049] The telescopic control component 23 includes a telescopic detection switch 231, which is electrically connected to the first control unit 41. The telescopic detection switch 231 is used to detect the telescopic state of the connecting component 2. When the connecting component 2 is in the retracted state or in a state between extension and retraction, the power tool cannot move or work (i.e., the second control unit 31 does not allow the walking drive motor 12 and the working drive motor 14 to operate). When the connecting component 2 is in the extended state, the power tool can move and work (i.e., the second control unit 31 allows the walking drive motor 12 and the working drive motor 14 to operate) to ensure safety.

[0050] A folding detection switch 16 is provided at the connection between the lower connector 21 and the main body 1. The folding detection switch 16 is electrically connected to the second control unit 31 and is used to detect the folding state of the connecting component 2. When the connecting component 2 is in a folded state or in a state between folding and unfolding, the power tool cannot move or work (i.e., the second control unit 31 does not allow the walking drive motor 12 and the working drive motor 14 to operate). When the connecting component 2 is in an unfolded state, the power tool can move and work (i.e., the second control unit 31 allows the walking drive motor 12 and the working drive motor 14 to operate) to ensure safety. For the specific structure and working principle of the connecting component 2, the telescopic control component 23, the telescopic detection switch 231, and the folding detection switch 16, please refer to the applicant's previous patent applications (such as CN113875399B, CN114365616B, etc.), which will not be elaborated here.

[0051] like Figure 2 and Figure 4 As shown, in one embodiment, the first wireless communication unit 51 is disposed on the connecting component 2. Specifically, the first wireless communication unit 51 is disposed on the user control module 4 (of course, the first wireless communication unit 51 can also be directly disposed on the body of the connecting component 2 or on other components of the connecting component 2). The second wireless communication unit 52 is disposed on the main body 1. Specifically, the second wireless communication unit 52 is disposed on the main control module 3 (of course, the second wireless communication unit 52 can also be directly disposed on the body of the main body 1 or on other components of the main body 1). For example, the user control module 4 also includes a first circuit board (not shown), on which both the first control unit 41 and the first wireless communication unit 51 are disposed; the main control module 3 also includes a second circuit board (not shown), on which both the second control unit 31 and the second wireless communication unit 52 are disposed. This setup is generally suitable for scenarios where the wireless communication module 5 uses a Bluetooth communication module, RF communication module, or Star Flash communication module, and there are no specific requirements for the installation location. (When the infrared communication module uses this setup, the infrared transceiver units need to be aligned to ensure smooth transmission of infrared signals. However, since the connecting component 2 can extend and fold relative to the main body 1, the angle between the user control module 4 and the main control module 3 will change during the extension and folding process, which may lead to the inability of the first infrared transceiver unit and the second infrared transceiver unit to perform normal infrared communication.)

[0052] In another implementation, the second wireless communication unit 52 is disposed on the connecting component 2. Specifically, the second wireless communication unit 52 can be disposed on the telescopic control component 23. Since the angle between the user control module 4 and the telescopic control component 23 does not change during the telescopic or folding process of the connecting component 2 (the two are always in a parallel state), disposing the first wireless communication unit 51 on the user control module 4 and the second wireless communication unit 52 on the telescopic control component 23 ensures that the first wireless communication unit 51 and the second wireless communication unit 52 are always aligned, thereby maintaining good communication between them. Since the second wireless communication unit 52 is not directly disposed on the main body 1, the second wireless communication unit 52 and the second control unit 31 need to be electrically connected via a cable (not shown). In this case, the cable can be routed through the lower connecting 21, that is, one end of the cable is electrically connected to the second wireless communication unit 52, and the other end of the cable passes through the lower connecting 21 and extends into the main body 1, and finally is electrically connected to the second control unit 31. Although this method requires additional cable, it shortens the cable length, and the cable adopts a hidden design, which improves the aesthetics of the device. This configuration is generally used when the wireless communication module 5 uses an infrared communication module. Of course, this configuration can also be used when the wireless communication module 5 uses a Bluetooth communication module, an RF communication module, or a star-flash communication module.

[0053] like Figure 2 and Figure 4 As shown, in one embodiment, the second power supply 45 is disposed on the user control module 4. In another embodiment, the user control module 4 further includes a housing 46, which is connected to the connecting component 2 (specifically, the left and right ends of the housing 46 are connected to the upper connecting 22 on the left and right sides, respectively). The first control unit 41 and the second power supply 45 are both disposed within the housing 46. Alternatively, the second power supply 45 can be directly disposed on the body of the connecting component 2 or on other components of the connecting component 2 (for example, a battery compartment can be additionally provided on the connecting component 2, and the second power supply 45 can be disposed within the battery compartment).

[0054] Specifically, the first circuit board in the user control module 4 is disposed inside the housing 46, the second power supply 45 is electrically connected to the first circuit board, and other components in the user control module 4 are also electrically connected to the first circuit board, so that the second power supply 45 supplies power to the user control module 4 through the first circuit board.

[0055] like Figure 2 and Figure 5As shown, in one embodiment, the second power supply 45 is non-detachably connected to the user control module 4 (i.e., the second power supply 45 cannot be directly removed from the user control module 4; for example, the second power supply 45 is an embedded battery embedded in the housing 46). In this case, the user control module 4 is provided with a charging interface 47, which can be specifically located on the first circuit board and electrically connected to it. The charging interface 47 is electrically connected to the second power supply 45. The charging interface 47 is used to connect to an external power source (not shown; the external power source can be AC ​​power, energy storage devices, etc.) to charge the second power supply 45. During charging, a charger from another device (such as a mobile phone charger) can be used to connect the charging interface 47 and the external power source to charge the second power supply 45, eliminating the need to equip the power tool with a separate charger. In one embodiment, the charging interface 47 includes one or more of a USB interface 471, a Type-C interface 472, and a Lightning interface 473, covering commonly used charger interface models both domestically and internationally, thus enabling compatibility with different types of chargers.

[0056] like Figure 6 As shown, in another embodiment, a fast charging module 48 is provided between the charging interface 47 and the second power supply 45, that is, the charging interface 47 is electrically connected to the second power supply 45 through the fast charging module 48. Thus, when the charging interface 47 is connected to a charger that supports fast charging, fast charging can be achieved, shortening the charging time. The fast charging module 48 may specifically include a PD fast charging protocol chip; the specific structure and working principle of the PD fast charging protocol chip can be found in existing technology and will not be elaborated here.

[0057] In another implementation, the second power supply 45 is detachably connected to the user control module 4. For example, a battery compartment is provided inside the housing 46, and the second power supply 45 is disposed inside the battery compartment. A cover plate is provided on the housing 46 to seal the battery compartment, and the cover plate is detachably connected to the housing 46. When the cover plate is opened or removed, the second power supply 45 can be taken out from the battery compartment. In this case, the power tool also includes a charger (not shown), which is generally a separately configured charger used to connect the second power supply 45 to an external power source to charge the second power supply 45. During charging, the second power supply 45 is first removed from the user control module 4, and then the charger is used to charge the second power supply 45.

[0058] In one implementation, the user control module 4 is detachably connected to the connection component 2. When the power tool is working, the user can detach the user control module 4 from the connection component 2 to remotely control the operation of the power tool through the user control module 4.

[0059] like Figure 2 and Figure 3 As shown, in one embodiment, the power tool is a lawnmower. The working component 13 includes a mowing blade, which is located at the bottom of the main body 1. The drive motor 14 drives the mowing blade to rotate for mowing. A grass collection box (not labeled) is located at the rear of the main body 1 to collect the grass cut by the mowing blade. Of course, in other embodiments, the power tool can also be a snowplow, etc., in which case the working component 13 can be replaced with a snowplow component, etc.

[0060] Second Embodiment

[0061] like Figure 7 As shown, the power tool provided in the second embodiment of this utility model is basically the same as that in the first embodiment, except that the charging method of the second power supply 45 is different. In this embodiment, the first power supply 15 is used to charge the second power supply 45.

[0062] In this embodiment, the power tool also includes an internal charging component 6, which is electrically connected to the first power supply 15 and the second power supply 45 respectively; the first power supply 15 can charge the second power supply 45 through the internal charging component 6.

[0063] Specifically, in this embodiment, combined with Figure 2 The internal charging component 6 includes a first charging module 61 and a second charging module 62. The first charging module 61 is disposed on the main body 1 and is electrically connected to the first power supply 15. The second charging module 62 is disposed on the connecting component 2 and is electrically connected to the second power supply 45. When the connecting component 2 is in a folded state, it will be close to the main body 1, causing the first charging module 61 and the second charging module 62 to come into contact or be close to each other. At this time, the first power supply 15 can charge the second power supply 45 through the first charging module 61 and the second charging module 62.

[0064] In this embodiment, the second charging module 62 is disposed on the telescopic control component 23, and the first charging module 61 is disposed at the front end of the first power supply 15 (specifically, as shown in the figure). Figure 2 As shown, the second charging module 62 can be located at position 1 on the telescopic control component 23, and the first charging module 61 can be located at position 2 on the first power supply 15. When the connecting component 2 is in a folded state, the telescopic control component 23 approaches or contacts the front end of the first power supply 15 (i.e., position 1 and position 2 approach or contact each other), thereby causing the first charging module 61 and the second charging module 62 to approach or contact each other. Of course, in other embodiments, the second charging module 62 can also be located at other positions on the connecting component 2, and the first charging module 61 can also be located at other positions on the main body 1.

[0065] Meanwhile, since the second power supply 45 is located on the user control module 4 and the second charging module 62 is located on the telescopic control component 23, there is a distance between the second power supply 45 and the second charging module 62. The second charging module 62 and the second power supply 45 are electrically connected via a wire (not shown). The wire runs through the upper connection 22, meaning one end of the wire is electrically connected to the second charging module 62, and the other end passes through the upper connection 22 and extends into the user control module 4, where it is electrically connected to the second power supply 45. Although this method requires additional wiring, it shortens the wire length, and the concealed design of the wire improves the aesthetics of the device.

[0066] In one implementation, the internal charging component 6 is a wired charging component. One of the first charging module 61 and the second charging module 62 includes a male connector and the other includes a female connector. When the connecting component 2 is in a folded state, the male connector and the female connector are in contact, and at this time, the first power supply 15 can charge the second power supply 45 through the male connector and the female connector.

[0067] In another implementation, the internal charging component 6 is a wireless charging component, specifically an electromagnetic induction charging component. The first charging module 61 includes an electromagnetic transmitter, and the second charging module 62 includes an electromagnetic receiver. When the connecting component 2 is in a folded state, the electromagnetic transmitter and the electromagnetic receiver are close to or in contact (they may not be in direct contact). At this time, the first power supply 15 can charge the second power supply 45 through the electromagnetic transmitter and the electromagnetic receiver. Specifically, the electromagnetic transmitter includes one or more transmitting coils. When the transmitting coil is connected to the first power supply 15, the transmitting coil can generate an alternating magnetic field in its vicinity. The electromagnetic receiver includes one or more receiving coils. When the receiving coil is in the alternating magnetic field generated by the transmitting coil, an induced current can be generated on the receiving coil, thereby charging the second power supply 45. For the specific principles and device structures of electromagnetic induction charging technology, please refer to existing technologies, which will not be elaborated here.

[0068] Of course, in other embodiments, the internal charging component 6 may also have other structural forms.

[0069] The other structures and working principles of this embodiment are the same as or similar to those of the first embodiment, and will not be described in detail here.

[0070] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A power tool, comprising a main body, a connection assembly connected to the main body, a main control module and a first power supply disposed on the main body, and a user control module disposed on the connection assembly, wherein the first power supply is electrically connected to the main control module; characterized in that, The power tool also includes a second power supply, which is disposed on the connection assembly and electrically connected to the user control module. The second power supply is used to supply power to the user control module. The battery capacity of the first power supply is greater than the battery capacity of the second power supply.

2. The power tool as described in claim 1, characterized in that, The second power supply is located on the user control module.

3. The power tool as described in claim 2, characterized in that, The second power supply is non-detachably connected to the user control module; the user control module is provided with a charging interface, which is electrically connected to the second power supply. The charging interface is used to connect to an external power source to charge the second power supply.

4. The power tool as described in claim 1, characterized in that, The power tool also includes an internal charging component, which is electrically connected to the first power supply and the second power supply respectively; the first power supply can charge the second power supply through the internal charging component.

5. The power tool as described in claim 4, characterized in that, The internal charging component includes a first charging module and a second charging module. The first charging module is disposed on the main body and is electrically connected to the first power supply. The second charging module is disposed on the connecting component and is electrically connected to the second power supply. The connecting component is rotatably connected to the main body. When the connecting component rotates relative to the main body, it has a folded state and an unfolded state. When the connecting component is in the folded state, the first charging module and the second charging module are in contact or close to each other. At this time, the first power supply can charge the second power supply through the first charging module and the second charging module.

6. The power tool as described in claim 5, characterized in that, The connecting assembly includes a lower connection and an upper connection. One end of the lower connection is rotatably connected to the main body, and the other end of the lower connection is retractably connected to one end of the upper connection. The user control module is installed on the end of the upper connection away from the lower connection. A telescopic control assembly is provided at the connection between the lower connection and the upper connection. The telescopic control assembly is used to control the relative telescopic movement of the upper connection and the lower connection. When the connecting component is in a folded state, the telescopic control component is close to or in contact with the front end of the first power supply. The second charging module is disposed on the telescopic control component, and the first charging module is disposed at the front end of the first power supply.

7. The power tool as described in claim 6, characterized in that, The second power supply is located on the user control module; the second charging module and the second power supply are electrically connected by a wire, which runs through the upper connection.

8. The power tool as claimed in claim 7, characterized in that, One of the first charging module and the second charging module includes a male connector and the other includes a female connector; when the connecting component is in a folded state, the male connector is in contact with the female connector, and at this time the first power supply can charge the second power supply through the male connector and the female connector; Alternatively, the first charging module includes an electromagnetic transmitting device, and the second charging module includes an electromagnetic receiving device; when the connecting component is in a folded state, the electromagnetic transmitting device and the electromagnetic receiving device are close to or in contact with each other, and at this time the first power supply can charge the second power supply through the electromagnetic transmitting device and the electromagnetic receiving device.

9. The power tool as claimed in claim 1, characterized in that, The user control module includes a first control unit, and the main control module includes a second control unit. The power tool also includes a wireless communication module, which includes a first wireless communication unit and a second wireless communication unit. The first wireless communication unit is disposed on the connecting component and is electrically connected to the first control unit. The second wireless communication unit is disposed on the main body or the connecting component and is electrically connected to the second control unit. The first wireless communication unit is capable of establishing a wireless communication link with at least the second wireless communication unit and / or an external terminal device. The user control module and the main control module transmit control signals through the wireless communication link.

10. The power tool as claimed in any one of claims 1-9, characterized in that, The power tool is a lawnmower or a snowplow.

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