Electric hammer and electric tool

Abstract

The utility model relates to an electric hammer and an electric tool. The electric hammer comprises a motor, a transmission assembly, a working head and a controller. The motor is used for transmitting driving force to the working head through the transmission assembly. The controller is used for controlling rotation of the motor; the electric hammer further comprises a trigger and a communication module. The trigger is at least used for controlling start-stop of the electric hammer; the communication module is installed on a control panel in the tool handle shell and used for communication connection. The trigger and the communication module are electrically connected with the controller. The trigger is further used for controlling the communication module to switch working states. According to the electric hammer, the electric hammer trigger is combined with the IOT function, and the convenience of the IOT function of the electric hammer can be improved under the condition that keys are not increased.

Description

Technical Field

[0001] This application relates to the field of power tool technology, and in particular to an electric hammer and a power tool. Background Technology

[0002] The application of Internet of Things (IoT) technology in the power tool industry is an important part of the intelligent transformation of industry. Its core lies in improving tool performance, optimizing production processes, and expanding service boundaries through device interconnection, data exchange, and intelligent analysis.

[0003] Therefore, improving the convenience of IoT functions in power tools is crucial. Utility Model Content

[0004] In view of this, embodiments of this application provide an electric hammer and a power tool to solve at least one problem existing in the prior art.

[0005] In a first aspect, embodiments of this application provide an electric hammer, which includes a motor, a transmission assembly, a working head, and a controller; wherein the motor is used to transmit driving force to the working head through the transmission assembly; and the controller is used to control the rotation of the motor.

[0006] The electric hammer also includes a trigger and a communication module; the trigger is used to control the start and stop of the electric hammer; the communication module is installed on a control board inside the tool handle housing for communication connection; the trigger and the communication module are respectively electrically connected to the controller;

[0007] The trigger is also used to control the communication module to switch its working state.

[0008] In conjunction with the first aspect, in an optional implementation, the operating state includes at least one of the following: power off state; power on state; waiting for connection state; on state; off state.

[0009] In conjunction with the first aspect, in an optional embodiment, the communication module includes at least one of the following: a short-range communication module; a long-range communication module;

[0010] The short-range communication module includes at least one of the following: Bluetooth module; WIFI module; ZigBee module; Ethernet module; serial port module; parallel port module;

[0011] The remote communication module includes at least one of the following: GPRS module; 2G module; 3G module; 4G module; 5G module; LTE module.

[0012] In conjunction with the first aspect, in an alternative implementation, the communication module is used for at least one of the following:

[0013] When the controller is powered on, the communication module is powered off.

[0014] When the communication module is in a power-off state, if the trigger is pressed once or the trigger is pressed continuously for a first predetermined number of times, the communication module will enter a power-on state to transmit data with a communication device with a connection record;

[0015] When the communication module is powered on, if the trigger is pressed once or the trigger is pressed a second predetermined number of times, the communication module enters a connection waiting state and sends a connection request to establish a communication connection with a predetermined communication device.

[0016] When the communication module is in the on state, if the trigger is pressed once or the trigger is pressed a third predetermined number of times, the communication module will enter the off state.

[0017] When the communication module is in the off state, if the trigger is pressed once or the trigger is pressed a fourth predetermined number of times, the communication module will enter the on state.

[0018] In conjunction with the first aspect, in an alternative implementation, the communication module is used for at least one of the following:

[0019] When the communication module is in a power-off state, if the trigger is pressed once, the communication module will enter a power-on state to transmit data with a communication device that has a connection record;

[0020] When the communication module is powered on, if the trigger is pressed 5 times consecutively, the communication module enters a connection waiting state and sends a connection request to establish a communication connection with the predetermined communication device.

[0021] When the communication module is in the on state, if the trigger is pressed three times consecutively, the communication module will enter the off state.

[0022] When the communication module is in the off state, pressing the trigger three times consecutively will turn the communication module on.

[0023] In conjunction with the first aspect, in an optional implementation, the continuous trigger press is defined as the time interval between two consecutive trigger presses being less than a predetermined time;

[0024] The number of times the trigger is pressed consecutively is the number of times the trigger is pressed consecutively and the time interval between two consecutive trigger presses is less than a predetermined time.

[0025] In conjunction with the first aspect, in an optional embodiment, the electric hammer further includes a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor, and a trigger interface;

[0026] The trigger is connected to the trigger interface for connection to the controller;

[0027] The communication module is connected to the first output terminal of the controller so as to control the power supply circuit of the communication module to be turned on or off by the level of the first output terminal;

[0028] The control terminal of the first transistor is connected to the second output terminal of the controller, the control terminal of the second transistor is connected to the third output terminal of the controller, the control terminal of the third transistor is connected to the fourth output terminal of the controller, the control terminal of the fourth transistor is connected to the fifth output terminal of the controller, the control terminal of the fifth transistor is connected to the sixth output terminal of the controller, and the control terminal of the sixth transistor is connected to the seventh output terminal of the controller.

[0029] The first transistor and the fourth transistor are connected in series between the first power supply terminal and the second power supply terminal; the second transistor and the fifth transistor are connected in series between the first power supply terminal and the second power supply terminal; and the third transistor and the sixth transistor are connected in series between the first power supply terminal and the second power supply terminal.

[0030] The first connection node between the first transistor and the fourth transistor, the second connection node between the second transistor and the fifth transistor, and the third connection node between the third transistor and the sixth transistor are respectively connected to the motor.

[0031] In conjunction with the first aspect, in an optional embodiment, the communication module is further configured to automatically disconnect the communication connection to enter a shutdown state or a power-off state under at least one of the following conditions:

[0032] After the electric hammer stops working for a first predetermined time;

[0033] The communication module is in an idle state after a second predetermined time.

[0034] In conjunction with the first aspect, in an optional embodiment, the controller is further configured to control the alarm module to generate and output an alarm when the communication module fails to transmit communication.

[0035] In conjunction with the first aspect, in an optional implementation, the alarm includes at least one of the following: a light alarm; a buzzer alarm; and a display screen showing alarm information.

[0036] In conjunction with the first aspect, in an optional embodiment, the communication module is further configured to, when communicating with the communication device, send the first data received from the communication device to the controller, so that the controller can verify whether the check code contained in the first data is correct; and if the check code is correct, return the second data corresponding to the first data to the communication device; and if the check code is incorrect, return a fault code to the communication device.

[0037] The communication device includes a predetermined display area for displaying at least one of the following: the first data; the second data; and the fault code.

[0038] Secondly, embodiments of this application provide an electric tool, the electric tool including a motor, a working head, and a controller; wherein the motor is used to transmit driving force to the working head; and the controller is used to control the rotation of the motor;

[0039] The power tool also includes a mode switching button and a communication module; the mode switching button is used to control the start and stop of the power tool; the communication module is installed on a control board inside the tool handle housing for communication connection; the mode switching button and the communication module are electrically connected to the controller respectively.

[0040] The mode switching button is also used to control the communication module to switch its working state.

[0041] The electric hammer and power tools provided in this application embodiment realize IoT functionality by incorporating a communication module within the tool handle housing and controlling the module's operating state—such as power on / off, activation / deactivation, and connection—directly through trigger operation. Therefore, by combining the trigger of the electric hammer and power tools with IoT functionality, the convenience of IoT functionality can be improved without adding additional buttons.

[0042] Additional aspects and advantages of the embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the embodiments of this application. Attached Figure Description

[0043] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, are provided. The drawings are not necessarily drawn to scale, and local features may be enlarged or reduced to more clearly show details of those features. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0044] Figure 1 This is a schematic diagram of a specific example of an electric hammer in the embodiments of this application;

[0045] Figure 2 This is a circuit diagram of a specific example of an electric hammer in the embodiments of this application;

[0046] Figure 3 This is a flowchart illustrating a specific example of counting the number of times the trigger is pressed consecutively in an embodiment of this application.

[0047] Figure 4 This is a flowchart illustrating a specific example of communication transmission in the implementation of this application.

[0048] Explanation of reference numerals in the attached figures:

[0049] 1. Tool handle; 2. Trigger; 3. Control board; 31. Communication module. Detailed Implementation

[0050] To make the technical solution and beneficial effects of this application more apparent and understandable, a detailed description is provided below by listing specific embodiments. The accompanying drawings are not necessarily drawn to scale, and local features may be enlarged or reduced to more clearly show the details of the local features; unless otherwise defined, the technical and scientific terms used herein have the same meanings as those in the technical field to which this application pertains.

[0051] The embodiments described in this application are not exhaustive, but merely illustrative of some embodiments, and are not intended to limit the scope of protection of this application. Unless otherwise specified, each step in a particular embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined with each other. For example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0052] In each embodiment of this application, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of the embodiments are consistent and can be referenced by each other. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0053] The terminology used in the embodiments of this application is for the purpose of describing specific embodiments only and is not intended to limit the scope of this application.

[0054] In the embodiments of this application, unless otherwise stated, elements expressed in the singular form, such as "a," "an," "the," "the," "the," "the," "the," "the," "this," etc., can mean "one and only one," or "one or more," "at least one," etc. For example, when using articles such as "a," "an," "the," etc. in translation, the noun after the article can be understood as either a singular expression or a plural expression.

[0055] In the embodiments of this application, "multiple" refers to two or more.

[0056] In some embodiments, the terms “at least one of”, “one or more”, “a plurality of”, “multiple”, etc., may be used interchangeably.

[0057] In some embodiments, the terms “greater than”, “greater than or equal to”, “not less than”, “more than”, “more than or equal to”, “not less than”, “higher than”, “higher than or equal to”, “not lower than”, “above”, “exceeding”, etc. can be used interchangeably, and the terms “less than”, “less than or equal to”, “not greater than”, “less than”, “less than or equal to”, “not more than”, “lower than”, “lower than or equal to”, “not higher than”, “below”, etc. can be used interchangeably.

[0058] The prefixes "first," "second," etc., used in the embodiments of this application are merely for distinguishing different descriptive objects and do not impose restrictions on the position, order, priority, value, or content of the descriptive objects. The description of the descriptive objects is based on the context of the embodiments, and the use of prefixes should not constitute unnecessary restrictions. For example, the numerical value of the descriptive object is not limited by ordinal numbers and can be one or more. Taking "first device" as an example, the numerical value of "device" can be one or more. Furthermore, the objects modified by different prefixes can be the same or different. For example, if the descriptive object is "device," then "first device" and "second device" can be the same device or different devices, and their types can be the same or different.

[0059] In some embodiments, the term "connection" can refer to the transmission of electrical signals or data between the connected end and the connected end, and can be understood as "electrical connection," "communication connection," etc. A "connection" can be a direct connection between two components, an indirect connection established through other components, a connection within two components, or any other possible form of connection.

[0060] This application provides an electric hammer. Figure 1 A schematic diagram of a specific example of an electric hammer according to an embodiment of this application is shown. As shown in the figure, the electric hammer includes a motor, a transmission assembly, a working head, and a controller; wherein, the motor is used to transmit driving force to the working head through the transmission assembly; and the controller is used to control the rotation of the motor.

[0061] The electric hammer also includes a trigger 2 and a communication module 31; the trigger 2 is used to control the start and stop of the electric hammer; the communication module 31 is installed on the control board 3 inside the tool handle 1 housing for communication connection; the trigger 2 and the communication module 31 are respectively electrically connected to the controller;

[0062] The trigger 2 is also used to control the communication module 31 to switch its working state.

[0063] Thus, this embodiment of the application realizes the IoT function of the electric hammer by setting a communication module 31 inside the housing of the tool handle 1 and directly controlling the working state of the communication module 31 through the operation of the trigger 2, such as powering on / off, turning on or off, and connecting the communication module 31. Therefore, by combining the electric hammer trigger 2 with the IoT function, the convenience of the electric hammer's IoT function can be improved without adding buttons.

[0064] In this embodiment, the trigger of the electric hammer can be called by different names, such as the switch, start button, or key of the electric hammer. No restrictions are placed on the name here.

[0065] In one optional implementation, the operating state includes at least one of the following: power off state; power on state; waiting for connection state; on state; off state.

[0066] Thus, the electric hammer trigger 2 enables control over various working states of the communication module 31. For example, it can control the power-on of the communication module, the opening or closing of the communication function, and the sending of communication requests to enter a waiting connection state, thereby improving the convenience of the electric hammer's IoT function.

[0067] In one optional embodiment, the communication module 31 includes at least one of the following: a short-range communication module; a long-range communication module;

[0068] The short-range communication module includes at least one of the following: Bluetooth module; WIFI module; ZigBee module; Ethernet module; serial port module; parallel port module;

[0069] The remote communication module includes at least one of the following: GPRS module; 2G module; 3G module; 4G module; 5G module; LTE module.

[0070] In this way, the communication module enables communication and interaction between the electric hammer and mobile terminals (such as mobile phones, smartwatches, tablets) and / or servers. For example, it enables data transmission between the electric hammer and an APP, expanding the IoT functionality of the electric hammer.

[0071] In this embodiment, the controller can be located on the control board 3 and can be a circuit with signal processing capabilities. In one implementation, the controller can be a circuit with instruction reading and execution capabilities, such as a Central Processing Unit (CPU), a microprocessor (MCU), a graphics processing unit (GPU) (which can be understood as a type of microprocessor), or a digital signal processor (DSP). In another implementation, the controller can implement certain functions through the logical relationships of the hardware circuits. The logical relationships of the aforementioned hardware circuits are fixed or reconfigurable. For example, the processor is a hardware circuit implemented using an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the controller loading a configuration document and configuring the hardware circuit can be understood as the process of the controller loading instructions to achieve the above functions. In addition, the controller can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a Neural Network Processing Unit (NPU), Tensor Processing Unit (TPU), Deep Learning Processing Unit (DPU), etc.

[0072] A server can be a standalone physical server, a server cluster or distributed system consisting of multiple physical servers, or a cloud server that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communication, middleware services, domain name services, security services, content delivery networks (CDNs), and big data and artificial intelligence platforms.

[0073] In an alternative embodiment, the communication module 31 includes at least one of the following:

[0074] When the controller is powered on, the communication module 31 is in a power-off state;

[0075] When the communication module 31 is in a power-off state, if the trigger 2 is pressed once or continuously pressed a first predetermined number of times, the communication module 31 will enter a power-on state to transmit data with a communication device with a connection record.

[0076] When the communication module 31 is powered on, if the trigger 2 is pressed once or the trigger 2 is pressed a second predetermined number of times, the communication module 31 enters a waiting connection state and sends a connection request to establish a communication connection with a predetermined communication device.

[0077] When the communication module 31 is in the on state, if the trigger 2 is pressed once or the trigger 2 is pressed a third predetermined number of times, the communication module 31 will enter the off state.

[0078] When the communication module 31 is in the off state, if the trigger 2 is pressed once or the trigger 2 is pressed a fourth predetermined number of times, the communication module 31 will enter the on state.

[0079] In this embodiment of the application, the communication device with connection records can be a tool that has already been recorded, such as a tool with a communication connection history record.

[0080] In some examples, the first, second, third, and fourth reservation counts can all be set according to actual needs. For example, the first reservation count can be 1 time, the second reservation count can be 5 times, and the third and fourth reservation counts can both be 3 times.

[0081] In an alternative embodiment, the communication module 31 is used for at least one of the following:

[0082] When the communication module 31 is in a power-off state, if the trigger is pressed once, the communication module 31 will enter a power-on state to transmit data with a communication device with a connection record;

[0083] When the communication module 31 is powered on, if the trigger is pressed 5 times consecutively, the communication module 31 enters a waiting connection state and sends a connection request to establish a communication connection with a predetermined communication device.

[0084] When the communication module 31 is in the on state, if the trigger is pressed 3 times in a row, the communication module 31 will enter the off state;

[0085] When the communication module 31 is in the off state, if the trigger is pressed three times in a row, the communication module 31 will enter the on state.

[0086] So, taking communication module 31 as a Bluetooth module and a mobile phone as the communication device as an example, Figure 2 A circuit diagram of a specific example of an electric hammer in an embodiment of this application is shown in the figure. As shown, the way to control the working state of the Bluetooth module by operating the trigger 2 can be as follows:

[0087] After the electric hammer is inserted into the battery pack, the controller (MCU) is powered on. At this time, the Bluetooth module is powered off, and the MCU records that the Bluetooth module is in a turned-off state.

[0088] If a mobile device needs to view the real-time status data of the electric hammer, it can press the trigger once. This will cause the MCU's output pin (out) to output a high level, controlling the Bluetooth module's power supply circuit to conduct. The MCU can then record that the Bluetooth module is powered on, thus enabling the Bluetooth module to be in the "on" state. After the Bluetooth module is powered on, it releases a Bluetooth signal, allowing connected mobile devices to connect and view the electric hammer's data.

[0089] Pressing the trigger five times consecutively will cause the MCU to control the Bluetooth module to enter a connection-waiting state and send a connection request. At this time, any pre-defined communication device, whether it has a connection record or not, can establish a communication connection with the Bluetooth module through a pre-defined communication protocol, thereby enabling the electric hammer's IoT function.

[0090] When a user does not need to enable the IoT function, that is, when the Bluetooth module needs to be turned off and the Bluetooth communication function needs to be turned off, the user can press the trigger 3 times in a row to turn off the Bluetooth module.

[0091] When a user needs to turn on the Bluetooth module again, they can press the trigger three times in a row to turn on the Bluetooth module and enable the Bluetooth communication function. In other words, the Bluetooth communication function can be turned off or on by pressing the trigger three times in a row.

[0092] Thus, through the above-mentioned settings of the communication module 31, the working state of the communication module 31 can be switched by operating only the trigger 2, without the need for additional operations, such as adding other buttons or switches, thereby greatly simplifying the operation and improving the ease of operation of the electric hammer IoT function.

[0093] In an optional embodiment, the continuous pressing of the trigger 2 means that the time interval between two consecutive pressings of the trigger 2 is less than a predetermined time;

[0094] The number of times trigger 2 is pressed continuously is the number of times trigger 2 is pressed continuously and the time interval between two consecutive presses of trigger 2 is less than a predetermined time.

[0095] In this embodiment of the application, the predetermined time can be set according to actual needs. For example, the predetermined time can be 2 seconds.

[0096] Figure 3 The figure shows a flowchart illustrating a specific example of counting the number of times the trigger is pressed consecutively in an embodiment of this application. As a specific example, the counting method for pressing the trigger 3 times consecutively can be as follows:

[0097] The key pin signal (i.e., switch signal) of the trigger interface is detected. When trigger 2 is pressed, the key pin level can be low, that is, when the trigger switch is closed, the key pin is low. When a low level is detected for the first time, the current time can be recorded. The number of times it is pressed is counted as 1. The number of low levels is counted within 2 seconds. When the number is equal to 3 times, it means that the trigger has been pressed quickly and continuously 3 times. At this time, the Bluetooth module can be turned on (or off). For example, the output pin OUT of the MCU can output a high level to control the Bluetooth module power supply circuit to be turned on (or off).

[0098] refer to Figure 2 In one optional embodiment, the electric hammer further includes a first transistor Q1, a second transistor Q2, a third transistor Q3, a fourth transistor Q4, a fifth transistor Q5, a sixth transistor Q6, and a trigger interface;

[0099] The trigger 2 is connected to the trigger interface for connection to the controller;

[0100] The communication module 31 is connected to the first output terminal (out) of the controller so as to control the power supply circuit of the communication module 31 to be turned on or off by the level of the first output terminal;

[0101] The control terminal of the first transistor Q1 is connected to the second output terminal of the controller, the control terminal of the second transistor Q2 is connected to the third output terminal of the controller, the control terminal of the third transistor Q3 is connected to the fourth output terminal of the controller, the control terminal of the fourth transistor Q4 is connected to the fifth output terminal of the controller, the control terminal of the fifth transistor Q5 is connected to the sixth output terminal of the controller, and the control terminal of the sixth transistor Q6 is connected to the seventh output terminal of the controller.

[0102] The first transistor Q1 and the fourth transistor Q4 are connected in series between the first power supply terminal B+ and the second power supply terminal B-; the second transistor Q2 and the fifth transistor Q5 are connected in series between the first power supply terminal B+ and the second power supply terminal B-; and the third transistor Q3 and the sixth transistor Q6 are connected in series between the first power supply terminal B+ and the second power supply terminal B-.

[0103] The first connection node between the first transistor Q1 and the fourth transistor Q4, the second connection node between the second transistor Q2 and the fifth transistor Q5, and the third connection node between the third transistor Q3 and the sixth transistor Q6 are respectively connected to the motor.

[0104] In this embodiment, the number of controller first output terminals connected to the communication module 31 can be set according to actual needs. For example, when multiple controller first output terminals are needed to control the power on and off of the communication module 31, the communication module 31 can be connected to multiple controller first output terminals.

[0105] A motor drive circuit is formed by transistors Q1, Q2, Q3, Q4, Q5, and Q6, which can control the rotation of the motor. These transistors can include controllable semiconductor switching devices such as MOSFETs and BJTs.

[0106] The first power supply terminal B+ can be connected to the positive terminal of the power supply, and the second power supply terminal B- can be connected to the negative terminal of the power supply.

[0107] In some examples, the trigger interface may include a first connection terminal (Key terminal), a second connection terminal (Fwr terminal), and a third connection terminal (Rev terminal). Trigger operation can change the voltage level of the Key terminal to control motor start / stop, power on / off of the communication module 31, activation or deactivation of communication functions, and transmission of communication requests. Forward start operation of the trigger can change the voltage level of the Fwr terminal to control the forward rotation of the motor. Reverse start operation of the trigger can change the voltage level of the Rev terminal to control the reverse rotation of the motor.

[0108] In some examples, the controller can be an MCU. The hammer drill also includes an LDO, which can provide a stable 5V voltage to power the MCU. The hammer drill also includes a current sensing module, which can be a sampling resistor RS1; one end of the current sensing module can be connected to the fourth transistor Q4, the fifth transistor Q5, and the sixth transistor Q6 respectively, and the other end can be connected to the second power supply terminal B-.

[0109] In the embodiments of this application, the transistor can be a single transistor; or it can be a series and / or parallel connection of multiple transistors, having a control terminal, a first signal terminal and a second signal terminal corresponding to a single transistor.

[0110] A resistor can be a single resistor, or multiple resistors connected in series and / or in parallel; it can also be a passive resistor network including resistors, capacitors, inductors, etc., or an active resistor network.

[0111] In an optional embodiment, the communication module 31 is further configured to automatically disconnect the communication connection to enter a shutdown state or a power-off state in at least one of the following situations:

[0112] After the electric hammer stops working for a first predetermined time;

[0113] The communication module 31 is in an idle state for a second predetermined time afterward.

[0114] In this embodiment, when the electric hammer stops working, it is inactive and in a stopped state. When the communication module 31 is idle, there is no information exchange between the electric hammer and devices such as mobile phones. The first and second predetermined times can be set according to actual needs, for example, both can be 5 minutes. This reduces tool energy consumption.

[0115] In an optional embodiment, the controller is further configured to control the alarm module to generate and output an alarm when the communication module 31 fails to transmit communication.

[0116] In some examples, the alarm includes at least one of the following: a light alarm; a buzzer alarm; and an alarm information displayed on a screen.

[0117] For example, when the Bluetooth module is on or connected, and when information transmission fails, the electric hammer can generate a light alarm, a buzzer alarm, or send information to the display screen to indicate the transmission failure.

[0118] In an optional embodiment, the communication module 31 is further configured to, when communicating with the communication device, send the first data received from the communication device to the controller so that the controller can verify whether the check code contained in the first data is correct; and if the check code is correct, return the second data corresponding to the first data to the communication device; and if the check code is incorrect, return a fault code to the communication device.

[0119] The communication device includes a predetermined display area for displaying at least one of the following: the first data; the second data; and the fault code.

[0120] Figure 4 The figure shows a flowchart illustrating a specific example of communication transmission in an implementation of this application. As a specific example, the information transmission between the tool and the mobile phone, from data acquisition to data transmission on the tool side, can be as follows:

[0121] The mobile app sends data; the MCU continuously checks whether the data has been received; when the MCU receives the data, it processes the data and calculates a checksum; the MCU determines whether the checksum is correct; if the checksum is correct, it returns the data to the mobile app; if the checksum is incorrect, it returns a fault code to the mobile app.

[0122] In some examples, the communication protocol used by the Bluetooth module may be as shown in Table 1 below.

[0123] Table 1

[0124]

[0125] Where n is a natural number greater than or equal to 1.

[0126] In some examples, the communication data content may be as shown in Table 2 below.

[0127] Table 2

[0128]

[0129] In some examples, the designated display area of ​​the communication device can be a mobile phone screen, a tablet screen, etc.

[0130] This application also provides a power tool, which may include at least one of the following: a miter saw, an electric drill, an electric hammer, a polisher, a cutting machine, an engraving machine, and other power tools. In some examples, the power tool may include a transmission assembly, through which the working head receives driving force from a motor, such as an electric hammer.

[0131] In some examples, power tools may not have a transmission component, and the working head can directly receive driving force from the motor.

[0132] The power tool includes a motor, a working head, and a controller; wherein the motor is used to transmit driving force to the working head; and the controller is used to control the rotation of the motor.

[0133] The power tool also includes a mode switching button and a communication module; the mode switching button is used to control the start and stop of the power tool; the communication module is installed on a control board inside the tool handle housing for communication connection; the mode switching button and the communication module are electrically connected to the controller respectively.

[0134] The mode switching button is also used to control the communication module to switch working states. The mode switching button was originally used to switch the operating mode of the power tool. By adding the function of the mode switching button to control the communication module, the communication module can be controlled without adding an extra button.

[0135] Specifically, pressing the button 1-3 times switches the operating mode of the power tool, and pressing the button 4-5 times or more continuously controls the communication module.

[0136] In this embodiment, a communication module is installed inside the tool handle housing, and the working state of the communication module is controlled directly by the operation of the trigger or mode switching button. For example, the power on / off, opening or closing, and connection of the communication module can be referred to the above embodiment. The electric hammer in the above embodiment can be replaced with a power tool. The specific implementation process and technical effects are as described above and will not be repeated here.

[0137] Thus, similar to the electric hammer in the above embodiment, the IoT function of the power tool can be realized. Therefore, by combining the trigger of the power tool with the IoT function, the convenience of the power tool's IoT function can be improved without adding buttons.

[0138] It should be understood that the above embodiments are exemplary and are not intended to encompass all possible implementations included in this application. Various modifications and changes can be made to the above embodiments without departing from the scope of this disclosure. Similarly, the various technical features of the above embodiments can be arbitrarily combined to form other embodiments of this application that may not be explicitly described. Therefore, the above embodiments only illustrate several implementations of this application and do not limit the scope of protection of this patent application.

Claims

1. An electric hammer characterized by comprising: The electric hammer comprises a motor, a transmission assembly, a working head and a controller; the motor is configured to transmit driving force to the working head through the transmission assembly; the controller is configured to control rotation of the motor; The electric hammer further comprises a trigger and a communication module; the trigger is configured to at least control start and stop of the electric hammer; the communication module is installed on a control board in a tool handle shell and configured to be communicatively connected; the trigger and the communication module are electrically connected to the controller respectively; The trigger is further configured to control switching of working states of the communication module.

2. The hammer drill according to claim 1, characterized in that The working states comprise at least one of the following: a power-off state; a power-on state; a waiting connection state; an open state; a closed state.

3. The hammer drill of claim 1, wherein, The communication module comprises at least one of the following: a short-distance communication module; a long-distance communication module; The short-distance communication module comprises at least one of the following: a Bluetooth module; a WIFI module; a ZigBee module; an Ethernet module; a serial port module; and a parallel port module; The long-distance communication module comprises at least one of the following: a GPRS module; a 2G module; a 3G module; a 4G module; a 5G module; and an LTE module.

4. The hammer drill of claim 1, wherein, The communication module is configured to at least one of the following: When the controller is powered on, the communication module is in the power-off state; When the communication module is in the power-off state, if the trigger is pressed once or continuously pressed for a first predetermined number of times, the communication module enters the power-on state to perform data transmission with a communication device having a connection record; When the communication module is in the power-on state, if the trigger is pressed once or continuously pressed for a second predetermined number of times, the communication module enters the waiting connection state and sends a connection request to the outside to establish a communication connection with a predetermined communication device; When the communication module is in the open state, if the trigger is pressed once or continuously pressed for a third predetermined number of times, the communication module enters the closed state; When the communication module is in the closed state, if the trigger is pressed once or continuously pressed for a fourth predetermined number of times, the communication module enters the open state.

5. The hammer drill of claim 4, wherein The communication module is configured to at least one of the following: When the communication module is in the power-off state, if the trigger is pressed once, the communication module enters the power-on state to perform data transmission with a communication device having a connection record; When the communication module is in the power-on state, if the trigger is continuously pressed for 5 times, the communication module enters the waiting connection state and sends a connection request to the outside to establish a communication connection with a predetermined communication device; When the communication module is in the open state, if the trigger is continuously pressed for 3 times, the communication module enters the closed state; When the communication module is in the closed state, if the trigger is continuously pressed for 3 times, the communication module enters the open state.

6. The hammer drill of claim 4, wherein, The continuous pressing of the trigger refers to that a time interval between two adjacent times of pressing the trigger is less than a predetermined time. The number of times of continuously pressing the trigger refers to a number of times of continuously pressing the trigger and a time interval between two adjacent times of pressing the trigger is less than a predetermined time.

7. The hammer drill of claim 1, wherein, The electric hammer further comprises a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor and a trigger interface; The trigger is connected to the trigger interface to be connected with the controller; The communication module is connected with the first output end of the controller to control the communication module power supply circuit to be turned on or turned off through the level of the first output end; The control end of the first transistor is connected with the second output end of the controller, the control end of the second transistor is connected with the third output end of the controller, the control end of the third transistor is connected with the fourth output end of the controller, the control end of the fourth transistor is connected with the fifth output end of the controller, the control end of the fifth transistor is connected with the sixth output end of the controller, and the control end of the sixth transistor is connected with the seventh output end of the controller; The first transistor and the fourth transistor are connected in series between the first power supply end and the second power supply end, the second transistor and the fifth transistor are connected in series between the first power supply end and the second power supply end, and the third transistor and the sixth transistor are connected in series between the first power supply end and the second power supply end; The first connection node between the first transistor and the fourth transistor, the second connection node between the second transistor and the fifth transistor, and the third connection node between the third transistor and the sixth transistor are connected with the motor respectively.

8. The hammer drill of claim 1, wherein, The communication module is further used to automatically disconnect the communication connection to enter the shutdown state or the power-off state in at least one of the following situations: The electric hammer stops working for a first predetermined time; The communication module is in an idle state for a second predetermined time.

9. The hammer drill of claim 1, wherein, The controller is further used to control the alarm module to generate and output an alarm when the communication module fails in communication transmission.

10. The hammer drill of claim 9, wherein, The alarm includes at least one of the following: light alarm, buzzer alarm, and display screen displaying alarm information.

11. The hammer drill according to any one of claims 1 to 10, characterized in that The communication module is further used to send the first data received from the communication device to the controller when communicating with the communication device, so that the controller verifies whether the check code contained in the first data is correct, and returns the second data corresponding to the first data to the communication device when the check code is correct, and returns a fault code to the communication device when the check code is incorrect. The communication device includes a predetermined display area for displaying at least one of the following: the first data, the second data, and the fault code.

12. An electric power tool characterized by comprising: The electric tool includes a motor, a working head, and a controller; the motor is used to transmit driving force to the working head; and the controller is used to control the rotation of the motor. The electric tool further includes a mode switching button and a communication module; the mode switching button is used to at least control the start and stop of the electric tool; the communication module is installed on a control board in a tool handle shell and is used for communication connection; and the mode switching button and the communication module are electrically connected with the controller respectively. The mode switching button is further used to control the communication module to switch the working state. The trigger is connected to the trigger interface to be connected with the controller; The communication module is connected with the first output end of the controller to control the communication module power supply circuit to be turned on or turned off through the level of the first output end; The control end of the first transistor is connected with the second output end of the controller, the control end of the second transistor is connected with the third output end of the controller, the control end of the third transistor is connected with the fourth output end of the controller, the control end of the fourth transistor is connected with the fifth output end of the controller, the control end of the fifth transistor is connected with the sixth output end of the controller, and the control end of the sixth transistor is connected with the seventh output end of the controller; The first transistor and the fourth transistor are connected in series between the first power supply end and the second power supply end, the second transistor and the fifth transistor are connected in series between the first power supply end and the second power supply end, and the third transistor and the sixth transistor are connected in series between the first power supply end and the second power supply end; The first connection node between the first transistor and the fourth transistor, the second connection node between the second transistor and the fifth transistor, and the third connection node between the third transistor and the sixth transistor are connected with the motor respectively. The communication module is further used to automatically disconnect the communication connection to enter the shutdown state or the power-off state in at least one of the following situations: The electric hammer stops working for a first predetermined time; The communication module is in an idle state for a second predetermined time. The controller is further used to control the alarm module to generate and output an alarm when the communication module fails in communication transmission. The alarm includes at least one of the following: light alarm, buzzer alarm, and display screen displaying alarm information. The communication module is further used to send the first data received from the communication device to the controller when communicating with the communication device, so that the controller verifies whether the check code contained in the first data is correct, and returns the second data corresponding to the first data to the communication device when the check code is correct, and returns a fault code to the communication device when the check code is incorrect. The communication device includes a predetermined display area for displaying at least one of the following: the first data, the second data, and the fault code. The electric tool includes a motor, a working head, and a controller; the motor is used to transmit driving force to the working head; and the controller is used to control the rotation of the motor. The electric tool further includes a mode switching button and a communication module; the mode switching button is used to at least control the start and stop of the electric tool; the communication module is installed on a control board in a tool handle shell and is used for communication connection; and the mode switching button and the communication module are electrically connected with the controller respectively. The mode switching button is further used to control the communication module to switch the working state.

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