Torque control system of electric tool and boosting device structure

Abstract

To provide a torque control system of an electric tool and a boosting device structure.SOLUTION: A torque control system of an electric tool includes a torque tester, a boosting device, and the electric tool. The torque tester includes at least a detection shaft and a communication module. The boosting device includes an output end, an input end, a signal transmission part, and a storage part electrically connected to the signal transmission part. The electric tool includes at least an output end, a control circuit, and a signal transmission module electrically connected to the control circuit. The boosting device is mounted on the detection shaft. Test data detected by the boosting device is transmitted to the signal transmission module through the communication module, is transmitted to the storage part by the signal transmission module and is stored, is transmitted to the signal transmission module by the signal transmission part, and is transmitted to the control circuit by the signal transmission module. The control circuit rotationally drives the boosting device on the basis of the test data.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a booster, and more particularly to a booster structure that detects test data of the booster and returns and stores the detected torque value in the booster, so that an electric tool can rotate and drive the booster based on the test data of the booster. [Background technology]

[0002] The principle of a torque multiplier is to amplify a small input force and generate a large output torque by using a highly efficient gear ratio difference.

[0003] Current power tools allow you to set the output torque value, and when the set torque value is reached, the output will stop or the tool will idle. For example, if the maximum torque value of a power tool is 300 Nm, but 500 Nm is required for construction, a power intensifier will be used to increase the torque. In this case, a power intensifier of 500 Nm or more can be installed. For example, the currently available MT2-1500 power intensifier has a torque ratio of 1:10 and a torque output range of 150 Nm to 1500 Nm. If 150 Nm is input to the power intensifier, 1500 Nm will be output. Therefore, after installing the power booster, it will send data to the power tool, and the power tool will be able to control the input torque value (0~150Nm) based on that data. This means that you can get a torque output of 0~1500nNm using the same power tool, eliminating the need to replace or purchase a new power tool with a higher torque (for example, if the power tool inputs 50Nm, the power booster will output 500Nm).

[0004] Furthermore, every intensifier has an error value. In other words, an error value is already present at the time of product shipment. For example, the above-mentioned model MT2-1500 intensifier has an error value of ±6% (direction and accuracy: CW ±6%). Errors can also occur after long-term use. For this reason, it is necessary to test it using a torque tester and store the obtained data in the intensifier. Once the power tool obtains this data, it can use calculations to correct (adjust) the torque for the error value. This prevents the object being fastened from being overtightened, causing damage or collapse, or conversely, from being too loose, causing loosening. Summary of the Invention [Problem to be solved by the invention]

[0005] Therefore, the problem that the present invention aims to solve is how to solve the error that occurs every time the booster is used. [Means for solving the problem]

[0006] The main object of the present invention is to provide a torque control system and a power booster structure for a power tool that overcomes the drawbacks of the prior art. When the power booster is used, a torque tester is used to detect test data (torque value) of the power booster, and the test data is returned to and stored in the power booster. The power booster then transmits the detected test data to the power tool, and the power tool rotates the power booster based on the detected test data.

[0007] In order to achieve the above object, the torque control system of the present invention for a power tool includes a torque tester, a power booster, and a power tool, wherein the torque tester includes at least a detection shaft and a communication module, the power booster includes an output end, an input end, a signal transmission unit, and a memory unit electrically connected to the signal transmission unit, the output end is exposed to one end of the power booster and the input end is exposed to the other end of the power booster, the signal transmission unit and the memory unit are attached inside the power booster, the power tool includes at least an output end, a control circuit, and a signal transmission module electrically connected to the control circuit, one end of the power booster is attached to the detection shaft, test data detected by the power booster is transmitted to the signal transmission module via the communication module, transmitted to and stored in the memory unit by the signal transmission unit, transmitted to the signal transmission module by the signal transmission unit, and transmitted to the signal transmission module by the signal transmission module, and transmitted to the control circuit by the signal transmission module, and the control circuit rotates the power booster based on the test data.

[0008] In one embodiment of the present invention, the communication module, the signal transmission unit, and the signal transmission module are conductive pins, connectors, or wireless transmission circuits.

[0009] In one embodiment of the present invention, the wireless transmission circuit is a module or a Bluetooth module.

[0010] In one embodiment of the present invention, the signal transmission module of the booster stores the calculated test data in the storage unit.

[0011] In one embodiment of the present invention, the control circuit of the power tool includes a data receiving module. When the power tool is connected to the power booster, the test data is transmitted from the signal transmission module to the control circuit, processed by the control circuit, and then transmitted to the data receiving module. The control circuit drives the power booster to rotate based on the test data received by the data receiving module.

[0012] To achieve the above object, the force intensifier structure of the present invention is connected to a torque tester and an electric tool and includes: a gear set mounted inside the force intensifier; an output terminal exposed at one end of the force intensifier and connected in interlock with the gear set; an input terminal exposed at the other end of the force intensifier and connected in interlock with the gear set; a signal transmission unit mounted inside the force intensifier; and a memory unit mounted inside the force intensifier and electrically connected to the signal transmission unit, wherein the signal transmission unit receives test data transmitted by the torque tester and stores it in the memory unit.

[0013] In one embodiment of the present invention, the torque tester includes a torque test circuit and a detection shaft electrically connected to the torque test circuit, the torque test circuit includes a communication module, and one end of the booster is attached to the detection shaft to connect the signal transmission unit to the communication module.

[0014] In one embodiment of the present invention, the power tool comprises at least an output terminal, a control circuit, and a signal transmission module electrically connected to the control circuit, and the signal transmission unit is electrically connected to the signal transmission module by attaching the output terminal of the power tool to the input terminal of the booster.

[0015] In one embodiment of the present invention, the control circuit includes at least a data receiving module, and the test data of the booster is received and processed by the signal transmission module and transmitted from the control circuit to the data receiving module, and the control circuit drives the booster to rotate based on the test data received by the data receiving module.

[0016] In one embodiment of the present invention, the communication module, the signal transmission unit, and the signal transmission module are conductive pins, connectors, or wireless transmission circuits. [Brief explanation of the drawings]

[0017] [Figure 1]FIG. 2 is a schematic circuit block diagram of a torque tester of the torque control system according to the present invention. [Figure 2] 1 is a schematic side cross-sectional view of a torque tester according to the present invention. [Figure 3] 1 is a schematic circuit block diagram of a booster according to the present invention; [Figure 4] 1 is a schematic circuit block diagram of a power tool electrically connected to a power intensifier according to the present invention to drive a workpiece; [Figure 5] 1 is a schematic external view of a power intensifier according to the present invention; [Figure 6] 1 is a schematic diagram showing a combination of a power intensifier and a power tool according to the present invention; [Figure 7] 1 is a schematic circuit block diagram of a power tool according to the present invention; [Figure 8] FIG. 4 is another schematic circuit block diagram of the power tool according to the present invention. [Figure 9] 1 is a schematic external view of a power tool according to the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0018] The detailed description and technical contents of the present invention are described below with reference to the drawings.

[0019] 1 to 3, Fig. 1 is a schematic circuit block diagram of a torque tester of a torque control system according to the present invention, Fig. 2 is a schematic side cross-sectional view of the torque tester according to the present invention, and Fig. 3 is a schematic circuit block diagram of a force intensifier according to the present invention. As shown in the figures, the power tool torque control system according to the present invention includes at least a torque tester 10 and a force intensifier 20.

[0020] The torque tester 10 is a known technology and includes at least a torque test circuit 101 , a detection shaft 102 , and a communication module 103 .

[0021] The torque test circuit 101 calculates the test data (Nm) generated when the sensing shaft 102 is rotated by the force intensifier 20 and displays it on the display screen 104 of the torque tester 10 .

[0022] The detection shaft 102 is electrically connected to the torque test circuit 101 and is exposed to the outside of the torque tester 10. This allows connection to the output end 201 of the booster 20 (see FIG. 4).

[0023] The communication module 103 can be mounted inside the torque tester 10 and electrically connected to the torque test circuit 101. The communication module 103 may transmit test data detected by the force intensifier 20 to the signal transmission unit 204 of the force intensifier 20, which may then transmit the test data from the signal transmission unit 204 to the memory unit 205 for storage. Alternatively, the communication module 103 may be mounted inside the detection shaft 102 (see FIG. 2). When the output end 201 (see FIG. 4) of the force intensifier 20 is connected to the detection shaft 102, the communication module 103 is electrically or wirelessly connected to the signal transmission unit 204 of the output end 201 of the force intensifier 20. The test data measured by the force intensifier 20 is transmitted to the signal transmission unit 204 via the communication module 103 and stored in the memory unit 205. In this embodiment, the communication module 103 is a conductive pin, a connector, or a wireless transmission circuit. The wireless transmission circuit is a Wi-Fi module or a Bluetooth (registered trademark) module.

[0024] After the output end 201 of the force intensifier 20 is connected to the detection shaft 102, the other end of the force intensifier 20 can be connected to a hand tool, a power tool, or a special tool (a test tool attached to a torque tester). When the force intensifier 20 is rotated by any of these hand tools, power tools, or special tools, test data is detected by the torque test circuit 101. The detection result is transmitted to the signal transmission unit 204 via the communication module 103 and stored in the memory unit 205 inside the force intensifier 20.

[0025] In the above-mentioned connection method, an external socket (not shown) is connected to the output end (not shown) of the booster 20, and the external socket (hexagonal socket nut) is fitted onto the detection shaft 102.

[0026] 4 to 6, Fig. 4 is a schematic circuit block diagram of electrically connecting a power booster according to the present invention to a power tool to drive a workpiece, Fig. 5 is a schematic external view of the power booster according to the present invention, and Fig. 6 is a schematic view showing a combination of the power booster according to the present invention and a power tool. Also referring to Figs. 1 to 3, the power booster 20 of the present invention includes an output end 201, a gear set 202, an input end 203, a signal transmission unit 204, and a memory unit 205.

[0027] The output end 201 is exposed at one end of the power intensifier 20, is a polygonal shaft portion, and is connected to a gear set 202. The output end 201 is driven by the gear set.

[0028] The gear set 202 is mounted inside the power intensifier 20 and is connected to the output end 201 and the input end 203. The gear set 202 is a conventional technology and will not be described in this specification.

[0029] The input end 203, which is exposed at the other end of the power intensifier 20 and has a polygonal groove, is connected to the gear set 202. After the input end 203 is connected to the output end (not shown) of the power tool 30, the input end 203 is driven by the power tool 30, i.e., the gear set 202 is driven to rotate, which drives the output end 201 to generate torque output. The signal transmission unit 204 is mounted inside the power intensifier 20 and electrically connected to the memory unit 205. When the signal transmission unit 204 receives the test data transmitted by the communication module 103, it stores the test data in the memory unit 205.

[0030] The storage unit 205 is electrically connected to the signal transmission unit 204 and is used to store test data measured by the booster 20. In this embodiment, the storage unit 205 is a memory, and the signal transmission unit 204 is a conductive pin, a connector, or a wireless transmission circuit. The wireless transmission circuit is a WIFI module or a Bluetooth module.

[0031] When work is being performed, the torque test circuit 101 detects test data. The detection results are transmitted to the signal transmission unit 204 via the communication module 103 and stored in the memory unit 205 inside the power intensifier 20. When the power intensifier 20 is connected to the power tool 30, the test data inside the memory unit 205 is transmitted to the signal transmission module 303 (see FIG. 8) via the signal transmission unit 204, and then transmitted to the data receiving module 304 (see FIG. 8) by the signal transmission module 303. Thereafter, the control circuit 30a (see FIG. 8) of the power tool 30 rotates the power intensifier 20 based on the test data, thereby performing work on the workpiece 40.

[0032] 5 and 6, the signal transmission unit 204 in the force intensifier 20 of the present invention may be attached to the output end 201 and the input end 203, respectively. When the output end 201 is connected to the detection shaft 102 of the torque tester 10 (see FIG. 2), and when detecting test data, the signal transmission unit 204 is electrically connected to the communication module 103 of the detection shaft 102, so that the torque tester 10 transmits the test data to the force intensifier 20. When the input end 203 is connected to the output end 301 of the power tool 30, the signal transmission unit 204 is electrically connected to the signal transmission module 303 of the output end 301 of the power tool 30 (see FIG. 9), so that the force intensifier 20 transmits the test data to the power tool 30, and the power tool 30 can rotate the force intensifier 20 based on the test data.

[0033] 7 to 9, Fig. 7 is a schematic circuit block diagram of a power tool according to the present invention, Fig. 8 is another schematic circuit block diagram of a power tool according to the present invention, and Fig. 9 is a schematic external view of a power tool according to the present invention. Also refer to Figs. 1 to 6. As shown in the figure, a power tool 30 according to the present invention includes an output terminal 301, a power transmission group 302, a signal transmission module 303, and a control circuit 30a.

[0034] The output end 301 is exposed at one end of the power tool 30 and connected to a power transmission group 302. The power transmission group 302 is driven by a control circuit 30a inside the power tool 30 to rotate the output end 301. The signal transmission module 303 is mounted inside the power tool 30 and electrically connected to the control circuit 30a. The signal transmission module 303 drives the power transmission group 302 to rotate the output end 301 based on the test data signal measured by the booster 20. In this embodiment, the signal transmission module 303 is a conductive pin, a connector, or a wireless transmission circuit. The wireless transmission circuit is a WIFI module or a Bluetooth module.

[0035] The control circuit 30a is electrically connected to the signal transmission module 303 and includes at least a data receiving module 304. The signal transmission module 303 receives the test data signal measured by the power booster 20, adds or subtracts an error value using the control circuit 30a, and transmits the result to the data receiving module 304 for storage. The control circuit 30a inside the power tool 30 drives the power transmission group 302 based on the test data, and the power transmission group 302 drives the output end 301 to output power.

[0036] When performing work, the input terminal 203 of the power intensifier 20 is connected to the output terminal 301 of the power tool 30. The test data stored in the memory unit 205 of the power intensifier 20 is transmitted to the signal transmission module 303 via the signal transmission unit 204, and then transmitted from the signal transmission module 303 to the data receiving module 304. The control circuit 30a of the power tool 30 rotates the power intensifier 20 based on the test data, thereby performing work on the workpiece 40.

[0037] For example, if the test data of the power tool 30 is 240 Nm, but the test data required for the task is 300 Nm, the load on the power tool 30 is already exceeded, and an additional booster 20 is required. If the test data measured by the torque tester 10 of the booster 20 is 500 Nm, it can handle the 300 Nm task. However, each booster 20 has an error value, and this error may increase over long-term use. Therefore, the measured test data (Nm) must be sent to the power tool 30. After the power tool 30 receives the test data signal, the control circuit 30a inside the power tool 30 adds or subtracts the error value to output power, which drives the booster 20 to perform the task on the workpiece.

[0038] 9, the signal transmission module 303 of the present invention may be mounted inside the output end 301. When the input end 203 (see FIG. 6) of the power intensifier 20 is connected to the output end 301 of the power tool 30, the signal transmission module 303 is electrically connected to the signal transmission unit 204, and the power intensifier 20 transmits the measured test data to the power tool 30, which is processed by the control circuit 30a and then transmitted to the data receiving module 304. The control circuit 30a inside the power tool 30 drives and rotates the power intensifier 20 based on the test data received by the data receiving module 304.

[0039] Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the scope of the above embodiments. Various modifications and improvements can be made to the above embodiments without departing from the spirit of the present invention, and such modifications and improvements are also included in the technical scope of the present invention. [Explanation of symbols]

[0040] 10 Torque Tester 101 Torque test circuit 102 Detection axis 103 Communication Module 104 display screen 20 Power Amplifier 201 Output terminal 202 Gear Set 203 Input terminal 204 Signal Transmission Section 205 Storage section 30 Power tools 30a Control circuit 301 Output terminal 302 Power Transmission Group 303 Signal Transmission Module 304 Data Receiving Module 40 Workpiece

Claims

1. A torque control system including a torque tester (10), a force multiplier (20), and a power tool (30), The torque tester (10) comprises at least a detection shaft (102) and a communication module (103); The booster (20) comprises an output terminal (201), an input terminal (203), a signal transmission unit (204), and a memory unit (205) electrically connected to the signal transmission unit (204), the output terminal (201) is exposed at one end of the booster (20), the input terminal (203) is exposed at the other end of the booster (20), the signal transmission unit (204) and the memory unit (205) are attached inside the booster (20), The power tool (30) comprises at least an output end (301), a control circuit (30a), and a signal transmission module (303) electrically connected to the control circuit (30a), one end of the power booster (20) is attached to the detection shaft (102), and test data detected by the power booster (20) is transmitted to the signal transmission unit (204) via the communication module (103), transmitted to the memory unit (205) and stored therein, transmitted to the signal transmission module (303) via the signal transmission unit (204), and transmitted to the control circuit (30a) via the signal transmission module (303), The control circuit (30a) rotates the intensifier (20) based on the test data.

2. The torque control system according to claim 1 , wherein the communication module (103), the signal transmission unit (204), and the signal transmission module (303) are conductive pins, connectors, or wireless transmission circuits.

3. The torque control system according to claim 2 , wherein the wireless transmission circuit is a WIFI module or a Bluetooth module.

4. The torque control system according to claim 1, wherein the signal transmission unit (204) of the force multiplier (20) stores the calculated test data in the storage unit (205).

5. 2. The torque control system of claim 1, wherein the control circuit (30a) of the power tool (30) includes a data receiving module, and when the power tool (30) is connected to the power intensifier (20), the test data is transmitted from the signal transmission module (303) to the control circuit (30a), processed by the control circuit (30a), and then transmitted to the data receiving module, and the control circuit (30a) drives the power intensifier (20) to rotate based on the test data received by the data receiving module.

6. A power multiplier structure connected to a torque tester (10) and a power tool (30), comprising: a gear set (202) mounted inside the intensifier (20); an output end (201) exposed at one end of the booster (20) and interlocking with the gear set (202); an input end (203) exposed at the other end of the booster (20) and interlocking with the gear set (202); a signal transmission unit (204) attached inside the booster (20); a memory unit (205) attached inside the booster (20) and electrically connected to the signal transmission unit (204); The signal transmission unit (204) receives test data transmitted by the torque tester (10) and stores it in the memory unit (205).

7. 7. The force intensifier structure of claim 6, wherein the torque tester (10) includes a torque test circuit (101) and a detection shaft (102) electrically connected to the torque test circuit (101), the torque test circuit (101) is provided with a communication module (103), and one end of the force intensifier (20) is attached to the detection shaft (102) to connect the signal transmission unit (204) to the communication module (103).

8. 8. The power booster structure according to claim 7, wherein the power tool (30) comprises at least an output end (301), a control circuit (30a), and a signal transmission module (303) electrically connected to the control circuit (30a), and the signal transmission unit (204) is electrically connected to the signal transmission module (303) by attaching the output end (301) of the power tool (30) to the input end (203) of the power booster (20).

9. 9. The booster structure according to claim 8, wherein the control circuit (30a) comprises at least a data receiving module, and receives and processes the test data of the booster (20) by the signal transmission module (303), and transmits the data to the data receiving module, and the control circuit (30a) drives the booster (20) to rotate based on the test data received by the data receiving module.

10. The booster structure according to claim 9, wherein the communication module (103), the signal transmission unit (204), and the signal transmission module (303) are conductive pins, connectors, or wireless transmission circuits.

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