An electric tightening wrench with wireless transmission function and use method thereof

Abstract

The present invention discloses an electric tightening wrench with wireless transmission function, which includes a reducer unit, a DC motor unit, a drive control unit, a wireless transceiver unit, a power supply unit and a housing; the power supply unit is electrically connected to the drive control unit to provide a power source for the drive control unit; the drive control unit is electrically connected to the DC motor unit to provide a drive control signal for it; the DC motor unit is electrically connected to the reducer unit to drive the reducer unit to rotate and output torque; the wireless transceiver unit is electrically connected to the drive control unit, and the drive control unit provides power and data signals for the wireless transceiver unit, and wireless transmission can be performed between the wireless transceiver unit and an external device. The present invention also discloses a method for using the electric tightening wrench. The present invention can quickly apply precise torque to a target bolt, achieve high-precision torque loading, and can communicate with an external device via a wireless network, and can manage and control tightening data in real time.

Description

Technical Field

[0001] The invention belongs to a fastening and assembly tool, and in particular relates to a tightening handle, and more particularly to an electric tightening handle with a wireless transmission function and a use method thereof. Background Art

[0002] With the rapid development of science and technology, electric tools have been widely used in production lines of various industries. In order to achieve more refined management, factories pay more and more attention to data management and traceability. For electric wrenches, they are not only required to have high precision, fast speed, and good stability, but also to have data management and traceability functions. The existing electric wrenches do not have data management functions, and cannot achieve the goal of refined management in the assembly process, which may cause workers to fail to complete the work as required due to irregular operations during the construction process, or intentionally or unintentionally, which will eventually cause various problems such as product quality.

[0003] Some existing electric wrenches rely on remote control for motor control, and the wrench itself does not have the ability to control the motor; some wrenches have motor control functions but do not have wireless transmission and remote data management capabilities. Even if they have wireless transmission functions, the addition of wireless transceiver functions will often affect the control speed of the motor, thereby affecting the output torque.

[0004] Based on the above problems, the present invention is committed to providing an electric tightening wrench with wireless transmission function and a method of using the same, which can achieve high-precision torque loading of the electric wrench while communicating with dedicated software through a wireless network, and can manage and control the tightening data in real time. Summary of the invention

[0005] In order to solve the deficiencies in the prior art, the purpose of the present invention is to provide an electric tightening wrench with wireless transmission function and a method of using the same, which can quickly apply precise torque to the target bolt, achieve high-precision torque loading, and can communicate with external devices through a wireless network, so as to manage and control the tightening data in real time.

[0006] The present invention adopts the following technical solution:

[0007] An electric tightening wrench with a wireless transmission function, the electric tightening wrench comprising a reducer unit (1), a DC motor unit (2), a drive control unit (3), a wireless transceiver unit (4), a power supply unit (6) and a housing (7); the power supply unit is electrically connected to the drive control unit to provide a power source for the drive control unit; the drive control unit is electrically connected to the DC motor unit to provide a drive control signal for the drive control unit; the DC motor unit is electrically connected to the reducer unit to drive the reducer unit to rotate and output torque; the wireless transceiver unit is electrically connected to the drive control unit, the drive control unit provides power and data signals for the wireless transceiver unit, and wireless transmission can be performed between the wireless transceiver unit and an external device.

[0008] Preferably, the electric tightening wrench further comprises a switch unit (5), which is electrically connected to the drive control unit to achieve reversing and starting and stopping of the wrench.

[0009] Preferably, after a tightening operation of the wrench is completed, the drive control unit transmits the data to the wireless transceiver unit.

[0010] Preferably, the wireless transceiver unit includes a data interface, a power interface, an ARM controller and a wireless module; the wireless transceiver unit receives power supply from the data interface and the power interface respectively for the data signal from the drive control unit; the ARM controller is used to parse and store data; the wireless module exchanges data with the ARM controller and establishes a wireless connection with external devices.

[0011] Preferably, the wireless transceiver unit also includes an adjustment button, a display screen and an antenna; the adjustment button is in the form of a membrane button, which is used to adjust the output torque and switch the display interface; the display screen is used to display the information of the wrench; and the antenna is used to enhance the communication performance of the wireless module.

[0012] Preferably, the reducer unit, DC motor unit, drive control unit, wireless transceiver unit and power supply unit are all fixed to the shell; the drive control unit is located at the handle portion of the shell; the reducer unit is located at the front of the shell; and the wireless transceiver unit is located at the rear end of the shell.

[0013] Preferably, the power supply unit is a detachable battery, which is powered through a battery interface of the shell.

[0014] Preferably, the electric tightening wrench also includes a reaction arm, and the reaction arm is fixed to the reducer unit through a spline.

[0015] The method for using an electric tightening wrench with a wireless transmission function of the present invention comprises: after the wrench is powered on, a driving control unit supplies power to a wireless transceiver unit; after the wrench completes a tightening operation, the driving control unit transmits data to the wireless transceiver unit; if the wrench does not complete a tightening operation, data transmission is performed after the tightening operation is completed; after the wireless transceiver unit receives the data, the wireless transceiver unit sends the data to an external device connected to the wireless transceiver unit.

[0016] Preferably, if the wireless transceiver unit is in a disconnected state with the external device, the data is sent to the external device after waiting for reconnection.

[0017] The beneficial effects of the present invention are as follows:

[0018] The electric tightening wrench with wireless transmission function of the present invention not only realizes the high-precision tightening function of the electric wrench, but also enables data to be remotely transmitted to an external computer or other equipment without causing any impact on the accuracy. It is very convenient for field work and can effectively monitor whether the operator correctly completes the established goals during the operation process. At the same time, it can also better manage the data, making it convenient for managers to trace the operation process.

[0019] The electric tightening wrench with wireless transmission function of the present invention adopts a wireless transceiver unit mode, separates the transceiver unit, and also concentrates the torque adjustment part and the display part in the wireless transceiver unit, further reducing the resource occupancy of the drive control unit and improving the timeliness and accuracy of the drive control unit for motor control and torque acquisition.

[0020] The electric tightening wrench with wireless transmission function of the present invention can not only adjust the target torque value through the adjustment button located on the wireless transceiver unit, but also adjust the setting of the target torque value through the wireless connection between the external device and the wireless transceiver unit. It is flexible and convenient. The external device can not only manage the data, but also realize the remote setting of the operation data. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the electric tightening handle with wireless transmission function of the present invention;

[0022] The reference numerals are as follows: 1-reducer unit, 2-DC motor unit, 3-drive controller unit, 4-wireless transceiver unit, 5-switch unit, 6-power supply unit, 7-housing, 8-reaction arm;

[0023] Figure 2 is a flow chart of wireless transmission performed by a wireless transceiver unit of the present invention;

[0024] Figure 3It is a structural schematic diagram of the wireless transceiver unit of the present invention. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0026] like Figure 1 As shown, the electric tightening wrench with wireless transmission function of the present invention includes a reducer unit 1, a DC motor unit 2, a drive controller unit 3, a wireless transceiver unit 4, a switch unit 5, a power supply unit 6, a housing 7 and a reaction arm 8.

[0027] The reducer unit 1, the DC motor unit 2, the drive controller unit 3, the wireless transceiver unit 4, the switch unit 5 and the power supply unit 6 are all fixed to the housing 7. The reaction arm 8 is fixed to the reducer unit 1 through a spline to provide a support point for the product during the tightening process.

[0028] The reducer unit 1 is fixed in the housing 7, located at the front of the housing, and is connected to the DC motor unit 2 by gear meshing. During operation, the motor of the DC motor unit 2 drives the reducer unit 1 to rotate, and finally amplifies the motor torque to achieve the purpose of outputting a greater torque of the product. Preferably, the reducer unit is a planetary reducer unit.

[0029] The drive control unit 3 is fixed in the housing 7 and is located at the handle portion of the housing. The drive control unit 3 is electrically connected to the DC motor unit 2 and is used to provide a drive signal used by the DC motor unit 2 to drive the motor to operate as required to achieve precise control of torque.

[0030] The drive control unit 3 is also electrically connected to the power supply unit 6, which provides power to the drive control unit. The drive control unit 3 uses the power provided by the power supply unit 6 to perform calculations, thereby providing a drive signal to the DC motor unit 2. Preferably, the electrical connection between the drive control unit 3 and the DC motor unit 2, and between the drive control unit 3 and the power supply unit 6 is performed through a cable. The power supply unit 6 is preferably a battery, which is detachable. When in use, the battery is connected to the battery interface of the housing to power the entire product.

[0031] The switch unit 5 is used for the user to enable the wrench and switch the running direction. The switch unit 5 is electrically connected to the drive control unit 3. The drive control unit 3 detects the closed and open states of the switch unit 5, thereby realizing the enabling and direction change of the product. The switch unit 5 is fixed on the switch seat by an enabling switch and a direction switch, and the two switch signals are made into cables to form the switch unit 5. By pressing the direction switch, the rotation direction of the output end of the tool can be switched. By long pressing the enabling switch, the tool can be controlled to start running, and releasing the enabling switch cuts off the operation of the tool. Preferably, the electrical connection between the switch unit 5 and the drive control unit 3 is carried out through a cable.

[0032] The wireless transceiver unit 4 is used to realize the wireless transmission function of the electric tightening wrench and is fixed to the rear end of the housing. The wireless transceiver unit 4 is electrically connected to the drive control unit 3, and the drive control unit 3 provides power and data signals to the wireless transceiver unit 4. Preferably, the electrical connection between the wireless transceiver unit 5 and the drive control unit 3 is performed through a cable.

[0033] Since the drive control unit 3 is mainly responsible for realizing the driving of the motor and data monitoring during the driving process, the requirement of precise torque output of the product has been met. If a wireless transceiver is added to the drive control unit 3, the drive control unit 3 will not be able to control the motor in full state during operation, resulting in a decrease in control accuracy and ultimately a decrease in the overall accuracy of the product. Therefore, the wireless transceiver unit 4 of the present invention is independent of the drive control unit 3. During the tightening operation, the drive control unit 3 sends data to the wireless transceiver unit 4, and the wireless transceiver unit 4 is responsible for wireless connection with external devices and status monitoring. When the wireless connection is disconnected, the wireless transceiver unit 4 can automatically reconnect until a connection is established with the external wireless device. The entire process will not affect the drive control of the motor by the drive control unit 3, thereby achieving the wireless transmission function while ensuring the control accuracy.

[0034] The overall working process of the wireless transceiver unit 4 is as follows Figure 2 shown.

[0035] The operation switch unit 5 starts the electric tightening wrench, the product is powered on, and the drive control unit 3 supplies power to the wireless transceiver unit 4 through the connected cable. The wireless transceiver unit 4 calls the connection address stored internally for wireless connection, and confirms whether the connection with the external wireless device is completed. After the wrench completes a tightening operation, the drive control unit 3 will transmit the data to the wireless transceiver unit 4. If the wrench has not completed a tightening operation, wait for the tightening operation to be completed before transmitting the data. After receiving the data, the wireless transceiver unit 4 sends the data to the connected external device. If the connection is disconnected, wait for reconnection before sending the data to the external device.

[0036] That is to say, during the whole working process, during the tightening operation, the drive control unit 3 does not transmit data, ensuring that it performs drive control in full state without causing adverse effects on the control accuracy. Only after the tightening operation is completed, the drive control unit 3 transmits data to the wireless transceiver unit 4. The wireless transceiver unit 4 transmits data when connected to an external device, thereby realizing communication and monitoring of the tightening wrench by the external device.

[0037] Further, such as Figure 3 As shown, the wireless transceiver unit 4 includes a data interface, a power interface, an ARM controller and a wireless module. The data interface and the power interface are used for the wireless transceiver unit 4 to receive data signals and power from the drive control unit 3, respectively. The ARM controller is used to parse the data sent by the drive control unit 3 to obtain valid data and store it, and the ARM controller and the wireless module exchange data. The wireless module is used to connect wirelessly with external devices.

[0038] Furthermore, the wireless transceiver unit 4 also includes an adjustment button, a display screen and an antenna. The adjustment button is in the form of a membrane button, which is used for functions such as adjusting the output torque and switching the display interface. The display screen is used to display various information of the wrench, including the tool running direction, the real-time temperature of the motor, the wireless connection status, the battery power, the target torque, the actual tightening angle, historical data, etc. The antenna is used to enhance the wireless communication performance of the wireless module. The wireless module in the wireless transceiver unit 4 is connected to the antenna, which can make the product more capable of receiving wireless signals and increase the communication distance. The electric tightening wrench with wireless transmission function of the present invention not only adopts the mode of the wireless transceiver unit, and separates the transceiver unit, but also concentrates the torque adjustment part and the display part in the wireless transceiver unit, further reducing the occupancy rate of the drive control unit resources, and improving the timeliness and accuracy of the drive control unit for motor control and torque acquisition.

[0039] The working process inside the wireless transceiver unit 4 is as follows:

[0040] The power interface of the wireless transceiver unit 4 receives power supply from the drive control unit 3, and the data interface receives data signals from the drive control unit 3. The ARM controller obtains valid data through analysis and stores it inside. The ARM controller in the wireless transceiver unit 4 can display various information of the wrench through the LCD screen. The wireless transceiver unit 4 can realize the setting of the target torque value by monitoring and detecting the state in the adjustment button. After that, the wireless transceiver unit 4 transmits the target torque back to the drive control unit 3 from the data interface. After the drive control unit 3 receives the signal, it adjusts the target output torque, thereby changing the output torque size of the product. The ARM controller in the wireless transceiver unit 4 continuously exchanges data with the wireless module to realize the connection between the wireless transceiver unit 4 and the external wireless device. After the connection is established, the data is wirelessly sent to the external wireless device. The external device can be, for example, a computer or other device, which is equipped with special software, through which the operator can monitor and view the tightening data of the wrench. In addition, the external device can also send the target output torque value to the wireless transceiver unit 4, and the wireless transceiver unit 4 then sends the target torque value to the drive control unit to adjust the target output torque.

[0041] The present invention realizes wireless data transmission through the design of a wireless transceiver unit and a drive control unit, while ensuring that the product can accurately control the torque, so that the application of the product is more extensive.

[0042] The beneficial effect of the present invention is that, compared with the prior art, the electric tightening wrench with wireless transmission function of the present invention not only realizes the high-precision tightening function of the electric wrench, but also enables data to be remotely transmitted to an external computer or other device without causing any impact on the accuracy. It is very convenient for field work and can effectively monitor whether the operator correctly completes the established goals during the operation process. At the same time, it can also better manage the data, making it convenient for managers to trace the operation process.

[0043] The electric tightening wrench with wireless transmission function of the present invention adopts a wireless transceiver unit mode, separates the transceiver unit, and also concentrates the torque adjustment part and the display part in the wireless transceiver unit, further reducing the resource occupancy of the drive control unit and improving the timeliness and accuracy of the drive control unit for motor control and torque acquisition.

[0044] The applicant of the present invention has made a detailed explanation and description of the implementation examples of the present invention in conjunction with the drawings in the specification. However, those skilled in the art should understand that the above implementation examples are only preferred implementation schemes of the present invention, and the detailed description is only to help readers better understand the spirit of the present invention, but not to limit the scope of protection of the present invention. On the contrary, any improvements or modifications based on the inventive spirit of the present invention should fall within the scope of protection of the present invention.

Claims

1. An electric tightening wrench with wireless transmission function, characterized in that: The electric tightening wrench comprises a reducer unit (1), a DC motor unit (2), a drive control unit (3), a wireless transceiver unit (4), a power supply unit (6) and a housing (7); the reducer unit, the DC motor unit, the drive control unit, the wireless transceiver unit and the power supply unit are all fixed to the housing; The drive control unit is located at the handle portion of the housing; The reducer unit is located at the front of the housing; The wireless transceiver unit is located at the rear end of the housing; The power supply unit is electrically connected to the drive control unit to provide a power source for the drive control unit; The drive control unit is electrically connected to the DC motor unit to provide a drive control signal thereto; The DC motor unit is electrically connected to the reducer unit to drive the reducer unit to rotate and output torque; The wireless transceiver unit is electrically connected to the drive control unit, and the drive control unit provides power and data signals to the wireless transceiver unit, so that wireless transmission can be performed between the wireless transceiver unit and the external device; The wireless transceiver unit includes a data interface, a power interface, an ARM controller and a wireless module; The wireless transceiver unit receives power supply from the data interface and the power interface respectively for receiving data signals from the drive control unit; The ARM controller is used to parse and store data; The wireless module exchanges data with the ARM controller and is wirelessly connected to external devices.

2. The electric tightening wrench with wireless transmission function as claimed in claim 1, characterized in that: The electric tightening wrench further comprises a switch unit (5), The switch unit is electrically connected to the drive control unit to realize the reversing and starting and stopping of the wrench.

3. The electric tightening wrench with wireless transmission function as claimed in claim 1, characterized in that: After a tightening operation of the wrench is completed, the drive control unit transmits the data to the wireless transceiver unit.

4. The electric tightening wrench with wireless transmission function as claimed in claim 1, characterized in that: The wireless transceiver unit also includes an adjustment button, a display screen and an antenna; The adjustment button is in the form of a membrane button, which is used to adjust the output torque and switch the display interface; The display screen is used to display the information of the wrench; The antenna is used to enhance the communication performance of the wireless module.

5. The electric tightening wrench with wireless transmission function as claimed in claim 1, characterized in that: The power supply unit is a detachable battery, which is powered by a battery interface of the shell.

6. The electric tightening wrench with wireless transmission function as claimed in claim 1, characterized in that: The electric tightening wrench also includes a reaction arm, which is fixed to the reducer unit through a spline.

7. A method for using an electric tightening wrench with wireless transmission function as claimed in any one of claims 1 to 6, characterized in that: After the wrench is powered on, the drive control unit supplies power to the wireless transceiver unit; After the wrench completes a tightening operation, the drive control unit transmits the data to the wireless transceiver unit; if the wrench does not complete a tightening operation, the data transmission is performed after the tightening operation is completed; After receiving the data, the wireless transceiver unit sends the data to an external device connected to the wireless transceiver unit.

8. The method for using the electric tightening wrench with wireless transmission function as claimed in claim 7, characterized in that: If the wireless transceiver unit is in a disconnected state with the external device, the data is sent to the external device after waiting for reconnection.

Images