Electric tool torsion control system and booster structure

Abstract

A torsion control system of an electric tool comprises a torque tester, a booster and the electric tool. The torque tester at least comprises a detection shaft and a communication module. The booster comprises a force output end, a force input end, a signal transmission unit and a storage unit. The electric tool at least comprises an output end, a control circuit and a signal transmission module, wherein the signal transmission module is electrically connected with the control circuit. Wherein the booster is assembled on the torque tester, and test data is transmitted to the signal transmission unit through the communication module and transmitted to the storage unit through the signal transmission unit to be stored. The signal transmission unit transmits the test data to the signal transmission module, the signal transmission module transmits the test data to the control circuit, and the control circuit drives the booster to rotate according to the test data.

Description

Technical Field

[0001] The present invention relates to a multiplier, and more particularly to a method for detecting test data of the multiplier and storing the detected torque value back into the multiplier, so as to provide an electric tool to drive the multiplier to rotate according to the test data of the multiplier. Background Art

[0002] The principle of the multiplier is to generate a large output torque by inputting a small amount of force through the difference in high-efficiency gear ratios.

[0003] Current power tools can set their output torque. When the set torque value is reached, they stop output or idle. For example, if a power tool has a maximum torque of 300Nm, but the job requires 500Nm, a multiplier is needed to increase the torque. In this case, a multiplier with a torque of 500Nm or higher can be installed. For example, the currently available MT2-1500 model has a torque ratio of 1:10, and a torque output range of 150Nm to 1500Nm. Therefore, a 150Nm input into the multiplier will result in a 1500Nm output. Therefore, once a multiplier is installed, it transmits data to the power tool, which uses this data to control the input torque value (0 to 150Nm). This allows the same power tool to achieve a torque output of 0 to 1500Nm, eliminating the need to upgrade or purchase a higher-torque power tool (e.g., a 50Nm input into the power tool will result in a 500Nm output).

[0004] In addition, every torque multiplier has an error value, which means that the error value is generated as soon as it leaves the factory. For example, the MT2-1500 model mentioned above has an error value of ±6% (Direction & Accuracy: CW ±6%). Error values ​​may also occur due to long-term use. Therefore, a torque tester is needed to test and store the data in the torque multiplier. When the power tool receives this data, it can calculate the torque to make up (add or subtract) the error value to prevent the locking object from being locked too tight (causing breakage or collapse) or too loose (loosening).

[0005] Therefore, how to solve the error generated each time the multiplier is used is the problem to be solved by the present invention. Summary of the Invention

[0006] Therefore, the main purpose of the present invention is to solve the traditional deficiencies. The present invention provides a new control system and a multiplier structure for an electric tool. When the multiplier is in use, a torque tester is used to detect the test data (torque value) of the multiplier, and the test data is transmitted back to the multiplier for internal storage. At the same time, the multiplier also transmits the detected test data to the electric tool for reception. The electric tool will drive the multiplier to rotate according to the test data obtained by the detection.

[0007] To achieve the above-mentioned purpose, the present invention provides a power tool torque control system, comprising: a torque tester, a multiplier and a power tool. The torque tester at least includes a detection shaft and a communication module. The multiplier includes an output end, an input end, a signal transmission unit and a storage unit. The output end is exposed at one end of the multiplier, and the input end is exposed at the other end of the multiplier. The signal transmission unit and the storage unit are installed inside the multiplier, and the storage unit is electrically connected to the signal transmission unit. The power tool at least includes an output end, a control circuit and a signal transmission module, and the signal transmission module is electrically connected to the control circuit. Among them, one end of the multiplier is assembled on the detection shaft, and the test data detected by the multiplier is transmitted to the signal transmission unit through the communication module, and then transmitted by the signal transmission unit to the storage unit for storage. The signal transmission unit transmits the test data to the signal transmission module, which then transmits the test data to the control circuit. The control circuit then drives the multiplier to rotate according to 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 WIFI module or a Bluetooth module.

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

[0011] In one embodiment of the present invention, the control circuit of the power tool further includes a data receiving unit; after the power tool is assembled with the multiplier, the signal is transmitted by the signal transmission module to the control circuit, processed by the control circuit, and then transmitted to the data receiving unit. The control circuit drives the multiplier to rotate based on the test data received by the data receiving unit.

[0012] To achieve the above-mentioned objectives, the present invention provides a multiplier structure that is assembled with a torque tester and an electric tool, comprising: a gear set, an output end, an input end, a signal transmission unit, and a storage unit. The gear set is installed inside the multiplier. The output end is exposed at one end of the multiplier and is connected in linkage with the gear set. The input end is exposed at the other end of the multiplier and is connected in linkage with the gear set. The signal transmission unit is installed inside the multiplier. The storage unit is installed inside the multiplier and is electrically connected to the signal transmission unit. The signal transmission unit receives the test data transmitted and detected by the torque tester and stores it in the storage unit.

[0013] In one embodiment of the present invention, the torque tester includes a torque test circuit and a detection shaft, the torque test circuit is electrically connected to the detection shaft, and the torque test circuit has a communication module, with one end of the multiplier being assembled on the detection shaft so that the signal transmission unit is connected to the communication module.

[0014] In one embodiment of the present invention, the power tool includes at least an output end, a control circuit and a signal transmission module. The signal transmission module is electrically connected to the control circuit. The output end of the power tool is connected to the input end of the power multiplier, so that the signal transmission unit is electrically connected to the signal transmission module.

[0015] In one embodiment of the present invention, the control circuit includes at least one data receiving unit. The signal transmission module receives the test data of the multiplier, processes it, and then transmits it to the data receiving unit through the control circuit. The control circuit drives the multiplier to rotate based on the test data received by the data receiving unit.

[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 DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The figure is a circuit block diagram of a torque tester of the torque control system of the present invention.

[0018] Figure 2 It is a side sectional schematic diagram of the torque tester of the present invention.

[0019] Figure 3 1 is a circuit block diagram of the force multiplier of the present invention.

[0020] Figure 4 It is a schematic diagram of a circuit block of the power multiplier of the present invention electrically connected to a power tool to drive a workpiece.

[0021] Figure 5 It is a schematic diagram of the appearance of the force multiplier of the present invention.

[0022] Figure 6 It is a schematic diagram of the connection between the multiplier and the electric tool of the present invention.

[0023] Figure 7 It is a circuit block diagram of the electric tool of the present invention.

[0024] Figure 8 is a further circuit block diagram of the electric tool of the present invention.

[0025] Figure 9 Schematic diagram of the appearance of the electric tool of the present invention.

[0026] Wherein, the accompanying drawings are marked as follows:

[0027] 10: Torque Tester 101: Torque Test Circuit

[0028] 102: detection axis 103: communication module

[0029] 104: Display 20: Multiplier

[0030] 201: output end 202: gear set

[0031] 203: Input end 204: Signal transmission unit

[0032] 205: Storage unit 30: Power tools

[0033] 30a: control circuit 301: output end

[0034] 302: Power transmission group 303: Signal transmission module

[0035] 304: Data receiving module 40: Workpiece DETAILED DESCRIPTION

[0036] The technical content and detailed description of the present invention are now described as follows with reference to the accompanying drawings:

[0037] See also Figure 1 、 2 , 3, among which, Figure 1 This is a circuit block diagram of a torque tester of the torque control system of the present invention. Figure 2 The torque tester of the present invention is a side view and Figure 3 As shown in the figure, the torque control system of the power tool of the present invention comprises at least: a torque tester 10 and a torque multiplier 20.

[0038] The torque tester 10 is conventional, and includes at least: a torque test circuit 101 , a detection shaft 102 , and a communication module 103 .

[0039] The torque test circuit 101 is used to calculate the test data (Nm) generated when the detection shaft 102 is rotated by the torque multiplier 20 and display the data on the display screen 104 of the torque tester 10 .

[0040] The detection shaft 102 is electrically connected to the torque test circuit 101 and is exposed outside the torque tester 10 for connection to the output end 201 (eg, Figure 4 shown) grouping.

[0041] The communication module 103 can be installed inside the torque tester 10 and electrically connected to the torque test circuit 101. The communication module 103 can transmit the test data detected by the multiplier 20 to the signal transmission unit 204 of the multiplier 20, and then the signal transmission unit 204 transmits the test data to the storage unit 205 for storage. Alternatively, the communication module 103 can be installed inside the detection shaft 102 (such as Figure 2 As shown), at the output end 201 of the multiplier 20 (as shown Figure 4 When the detection shaft 102 is assembled with the communication module 103 (as shown), the communication module 103 is electrically or wirelessly connected to the signal transmission unit 204 of the output end 201 of the force multiplier 20. The test data measured by the force multiplier 20 is transmitted to the signal transmission unit 204 via the communication module 103 and stored in the storage unit 205. In this figure, the communication module 103 is a conductive pin, a connector, or a wireless transmission circuit. The wireless transmission circuit is a WiFi module or a Bluetooth module.

[0042] The output end 201 of the torque multiplier 20 is connected to the detection shaft 102. The other end of the torque multiplier 20 can be connected to a hand tool, a power tool, or a special tool (such as the one included with the torque tester). When the torque multiplier 20 is driven by the hand tool, power tool, or special tool, the torque testing circuit 101 performs test data detection. The detection results are transmitted to the signal transmission unit 204 via the communication module 103 and stored in the storage unit 205 within the torque multiplier 20.

[0043] It is worth mentioning that, in the above-mentioned assembly method, the output end (not shown) of the multiplier 20 is assembled with an external sleeve (not shown), and then the external sleeve (hexagonal nut) is sleeved on the detection shaft 102.

[0044] See also Figures 4-6 ,in Figure 4 This is a schematic diagram of a circuit block of the power multiplier of the present invention electrically connected to an electric tool to drive a workpiece. Figure 5 This is a schematic diagram of the appearance of the multiplier of the present invention and Figure 6 This is a schematic diagram of the power tool and the power tool assembly of the present invention; Figures 1 to 3 The power multiplier 20 of the present invention further comprises: an output end 201 , a gear set 202 , an input end 203 , a signal transmission unit 204 and a storage unit 205 .

[0045] The output end 201 is exposed at one end of the multiplier 20 and is a polygonal shaft portion, which is connected to the gear set 202 . The output end 201 is driven by the gear set 202 .

[0046] The gear set 202 is installed inside the multiplier 20 and is connected to the output end 201 and the input end 203. The gear set 202 is a prior art and will not be described in detail here.

[0047] The input end 203, exposed at the other end of the power multiplier 20 and having a polygonal recess, is connected to the gear set 202. When connected to the output end of the power tool 30 (not shown), the input end 203 receives power from the power tool 30, thereby rotating the gear set 202 and generating torque output at the output end 201. The signal transmission unit 204 is installed within the power multiplier 20 and is electrically connected to the storage unit 205. The signal transmission unit 204 receives test data transmitted by the communication module 103 and stores the test data in the storage unit 205.

[0048] The storage unit 205 is electrically connected to the signal transmission unit 204 and is used to store test data measured by the force multiplier 20. In the accompanying drawings, the storage unit 205 is a memory; the signal transmission unit 204 is a conductive pin, a connector, or a wireless transmission circuit. The wireless transmission circuit is a Wi-Fi module or a Bluetooth module.

[0049] During operation, the torque test circuit 101 performs test data detection, and the detection result is transmitted to the signal transmission unit 204 through the communication module 103 and stored in the storage unit 205 inside the multiplier 20. When the multiplier 20 is connected to the power tool 30, the test data in the storage unit 205 is transmitted to the signal transmission module 303 of the control circuit 30a (such as Figure 8 ), and then transmitted by the signal transmission module 303 to the data receiving module 304 (as shown Figure 8 The control circuit 30a of the electric tool 30 (as shown) receives. Figure 8 ) According to the test data, the multiplier 20 is driven to rotate, and the workpiece 40 can be constructed.

[0050] For further information, see Figure 5 、 6 The signal transmission unit 204 in the force multiplier 20 of the present invention can be installed on the output end 201 and the input end 203 respectively. Figure 2 When the test data is detected, the signal transmission unit 204 is electrically connected to the communication module 103 of the detection shaft 102, and the torque tester 10 transmits the test data to the force multiplier 20 for reception. When the input end 203 is connected to the output end 301 of the power tool 30, the signal transmission unit 204 is connected to the signal transmission module 303 (see FIG. Figure 9 ) is electrically connected so that the multiplier 20 can transmit the test data to the power tool 30 for receiving, so that the power tool 30 drives the multiplier 20 to rotate according to the test data.

[0051] See also Figures 7-9 ,in Figure 7 This is a circuit block diagram of the power tool of the present invention, Figure 8 is a further circuit block diagram of the electric tool of the present invention and Figure 9 This is a schematic diagram of the appearance of the power tool of the present invention; Figures 1 to 6 As shown in the figure, the power tool 30 of the present invention includes an output end 301, a power transmission group 302, a signal transmission module 303 and a control circuit 30a.

[0052] The output end 301 is exposed at one end of the power tool 30 and is connected to the power transmission group 302. When the power transmission group 302 is driven by the control circuit 30a within the power tool 30, the power transmission group 302 drives the output end 301 to rotate. The signal transmission module 303 is installed within the power tool 30 and is electrically connected to the control circuit 30a to drive the power transmission group 302 to rotate the output end 301 based on the test data signal measured by the multiplier 20. In the accompanying drawings, 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.

[0053] 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 multiplier 20. The control circuit 30a calculates and subtracts the error value and transmits it to the data receiving module 304 for storage. The control circuit 30a within the power tool 30 drives the power transmission assembly 302 based on the test data, causing the power transmission assembly 302 to drive the output end 301 to output power.

[0054] During operation, the input terminal 203 of the power multiplier 20 is connected to the output terminal 301 of the power tool 30. Test data stored in the storage unit 205 of the power multiplier 20 is transmitted via the signal transmission unit 204 to the signal transmission module 303, which then transmits the data to the data receiving module 304. The control circuit 30a of the power tool 30 drives the power multiplier 20 to rotate based on the test data, thereby performing work on the workpiece 40.

[0055] For example, if the test data of the power tool 30 is 240 Nm, but the required test data is 300 Nm, which exceeds the load of the power tool 30, a multiplier 20 must be installed. If the test data of the multiplier 20 measured by the torque tester 10 is 500 Nm, the power tool 30 can be used for 300 Nm work. However, since each multiplier 20 has an error value, or the error value increases with long-term use, the test data (Nm) must be transmitted to the power tool 30. After the power tool 30 receives the signal, the microprocessor 303 inside the power tool 30 calculates the error value and then outputs power to transmit the multiplier 20 to the workpiece.

[0056] For further information, see Figure 9 The signal transmission module 303 of the present invention can be installed inside the output end 301, at the input end 203 of the force multiplier 20 (such as Figure 6 When the power tool 30 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 multiplier 20 can transmit the measured test data to the power tool 30. After being processed by the control circuit 30a, the data data is transmitted to the data receiving module. The control circuit 30a inside the power tool 30 will drive the power multiplier 20 to rotate according to the test data received by the data receiving module 304.

[0057] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of patent protection of the present invention. Therefore, any equivalent changes made by using the contents of the present invention description or drawings are similarly included in the scope of protection of the present invention and are hereby stated.

Claims

1. A power tool torque control system, characterized in that: include: A torque tester comprising at least a detection shaft and a communication module; A power multiplier comprising an output end, an input end, a signal transmission unit, and a storage unit; the output end is exposed at one end of the power multiplier, the input end is exposed at the other end of the power multiplier, the signal transmission unit and the storage unit are installed inside the power multiplier, and the storage unit is electrically connected to the signal transmission unit; An electric tool comprises at least one output terminal, a control circuit, and a signal transmission module, wherein the signal transmission module is electrically connected to the control circuit; One end of the multiplier is connected to the detection shaft. Test data detected by the multiplier is transmitted to the signal transmission unit through the communication module, and then transmitted to the storage unit for storage. The signal transmission unit then transmits the test data to the signal transmission module, which then transmits it to the control circuit. The control circuit then drives the multiplier to rotate based on the test data.

2. The power tool torque control system according to claim 1, wherein: The communication module, the signal transmission unit and the signal transmission module are conductive pins, connectors or wireless transmission circuits.

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

4. The power tool torque control system according to claim 1, wherein: The signal transmission unit of the force multiplier stores the calculated test data in the storage unit.

5. The power tool torque control system according to claim 1, wherein: The control circuit of the power tool also includes a data receiving unit. After the power tool is connected to the multiplier, the signal is transmitted from the signal transmission module to the control circuit, processed by the control circuit, and then transmitted to the data receiving unit. The control circuit drives the multiplier to rotate based on the test data received by the data receiving unit.

6. A force multiplier structure, combined with a torque tester and an electric tool, characterized in that: include: A gear set is installed inside the multiplier; An output end, exposed at one end of the multiplier, and linked to the gear set; An input end, exposed at the other end of the multiplier, and linked to the gear set; a signal transmission unit installed inside the force multiplier; a storage unit installed inside the force multiplier and electrically connected to the signal transmission unit; The signal transmission unit receives the test data transmitted and detected by the torque tester and stores the received data in the storage unit.

7. The force multiplier structure according to claim 6, characterized in that: The torque tester includes a torque test circuit and a detection shaft. The torque test circuit is electrically connected to the detection shaft. The torque test circuit has a communication module. One end of the multiplier is assembled on the detection shaft, so that the signal transmission unit is connected to the communication module.

8. The force multiplier structure according to claim 7, characterized in that: The power tool at least includes an output end, a control circuit and a signal transmission module. The signal transmission module is electrically connected to the control circuit. The output end of the power tool is connected to the input end of the multiplier, so that the signal transmission unit is electrically connected to the signal transmission module.

9. The force multiplier structure according to claim 8, characterized in that: The control circuit includes at least one data receiving unit. The signal transmission module receives the test data of the multiplier and processes it before transmitting it to the data receiving unit. The control circuit drives the multiplier to rotate according to the test data received by the data receiving unit.

10. The force multiplier structure according to claim 9, characterized in that: The communication module, the signal transmission unit and the signal transmission module are conductive pins, connectors or wireless transmission circuits.

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