Torque wrench with digital display for easy torque adjustment

Abstract

To provide a torque wrench with a digital display that can easily adjust torque and has the function and purpose of speedily adjusting a torque value. [Solution] A torque wrench with a digital display that allows for easy torque adjustment includes a main body 10, a movable member 20, a trigger device 30, a torque adjustment device 40, and a torque detection device 50. The torque adjustment device 40 includes an elastic member 41, a moving member 42, a drive gear 43, and an adjustment member 44. The adjustment member 44 is rotatable and drives the drive gear 43 to rotate, driving the moving member 42 to form a linear displacement and adjusting the support position of the moving member 42 relative to the elastic member 41.

Description

[Technical Field]

[0001] The present invention relates to a torque wrench, and more particularly to a torque wrench with a digital display that allows easy torque adjustment. [Background technology]

[0002] Conventional torque wrenches set and read torque via a torque scale on the body, and provide the user with a judgment as to whether the set torque value has been reached during turning operations. However, conventional torque wrenches make it difficult to determine and read torque values ​​directly.

[0003] Later, a manufacturer proposed a torque wrench that digitally displays torque values, in which the torque is set by turning the handle to rotate the push rod unit, causing the working mass of the bias unit to displace it axially, driving the push member to slide the slider of the torque detection unit, thereby changing the electrical resistance of the corresponding variable resistor. The amount of change in electrical resistance is converted through a circuit and then displayed as a digital torque value on a display. Although the torque wrench described above has solved the drawback of conventional torque wrenches, which make it difficult to read the torque value, the variable resistor of the torque wrench is easily affected by environmental factors such as humidity and vibration during operation, resulting in unstable voltage output and adversely affecting the determination of the torque value. Furthermore, when adjusting the torque of the torque wrench, the handle is turned to drive the push rod, and the second end of the push rod is connected to the push member by a screw thread. When the push rod rotates, the push member presses the spring, and the torque value of the torque wrench is adjusted by adjusting the counter-thrust of the trigger mechanism device. To adjust torque using a screw thread, the user must adjust the torque by turning it turn by turn. This action requires overcoming the elastic force of a spring, making the operation too slow or insufficient. For example, adjusting from the minimum torque value to the maximum torque value requires a lot of time and effort, which is inconvenient. Furthermore, it is not possible to quickly adjust from the lower torque limit to the upper torque limit (or vice versa). (See Patent Document 1, for example.)

[0004] Another type of torque wrench known is one that electronically displays the torque value. This torque wrench utilizes the contact relationship between the scraper on the screw and the thin film potentiometer, and the torque value detected by the sensor based on the change in electrical resistance between the two is displayed on the screen. However, temperature changes and friction between the scraper and thin-film potentiometer cause changes in electrical resistance, which adversely affects the accuracy of the potentiometer, and therefore the accuracy of the torque value. To further adjust the torque value, the handle is turned to move the screw, connecting the screw threads to the connector, and when the screw is turned, the connector presses the spring, adjusting the counter-thrust of the trigger mechanism device, thereby adjusting the torque value of the torque wrench. The threaded torque adjustment is also still slow, time-consuming and tedious to use. However, the function of quickly adjusting from the lower torque limit to the upper torque limit cannot be performed (or the same applies to the function of quickly adjusting from the upper torque limit to the lower torque limit). (See Patent Document 2 for an example.) [Prior art documents] [Patent documents]

[0005] [Patent Document 1] U.S. Patent Publication No. 5,537,877 "Torsion wrench with display unit for displaying torsion force limit thereon" [Patent Document 2] U.S. Patent Publication No. 2016 / 0031070A1 "TORQUE WRENCH" Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention aims to provide a torque wrench with a digital display that allows for easy torque adjustment by converting a rotary operation method into a linear movement method to quickly adjust the torque value, and also allows for quick and easy adjustment from the lower torque limit to the upper torque limit, as well as from the upper torque limit to the lower torque limit. [Means for solving the problem]

[0007] To achieve the above-mentioned object, one embodiment of the present invention provides a torque wrench with a digital display that allows easy torque adjustment. The torque wrench includes a body, a movable member, a trigger device, a torque adjusting device, and a torque detecting device. The body has a first end and a second end remote from the first end. The movable member is pivotally mounted on the body and forms a pivotally movable relationship with the body. The movable member has a movable portion exposed to the outside of the body and a connecting portion pivotally mounted on a first end of the body. The connecting portion has a connecting end on the side away from the movable portion. The trigger device is disposed within the body and contacts the connecting end of the connecting portion. The torque adjusting device is mounted on the main body and connected to the trigger device. The torque adjusting device can be adjusted to a preset torque by user operation and includes an elastic member, a movable member, a drive gear, and an adjustment member. The elastic member has a fixed portion and a free end interconnected with the fixed portion, and the fixed portion is fixed to the trigger device. The movable member is slidably mounted on the main body along the axial direction of the main body, and has a support portion against which the free end rests when subjected to force. The movable member has a first toothed portion disposed parallel to the axial direction. The drive gear has second toothed portions that mesh with the first toothed portions. The adjustment member is connected to the drive gear. The adjustment member can be rotated by the user to drive the movable member to form a linear sliding relationship with the main body, making it easy to adjust the position of the support portion relative to the free end. Furthermore, a torque detector is installed at a location on the main body corresponding to the torque adjusting device, and the torque detector detects a change in displacement of the moving member and displays the torque value on a display.

[0008] The present invention employs a rotational operation of an adjustment member, which drives and rotates a drive gear and linearly displaces a moving member, thereby achieving the effect of speedily adjusting the torque value and reducing time and labor. [Effects of the Invention]

[0009] The torque wrench with digital display of the present invention, which allows easy torque adjustment, has the following advantages.

[0010] As a first effect, the present invention employs a rotary operation method for linear movement conversion, which allows for a speedy and simple adjustment function from the lower torque limit to the upper torque limit, and also allows for a speedy and simple adjustment function from the upper torque limit to the lower torque limit.

[0011] As a second effect, in the present invention, since the second rotation radius of the adjusting member is larger than the first rotation radius of the drive gear, the torque value can be adjusted quickly, saving time. Furthermore, in the present invention, since the moving member is meshed with the drive gear to transmit power, there is no spring resistance as in the prior art in the adjustment process, which saves labor.

[0012] As a third effect, since the second radius of rotation of the adjustment member of the present invention is large, rotation operation is easy and torque can be finely adjusted.

[0013] As a fourth advantage, the torque detector of the present invention employs non-contact sensing, which avoids the influence of the external environment, has a long service life, and can achieve highly accurate torque value setting and determination.

[0014] As a fifth effect, since the contact relationship between the support part and the elastic member of the present invention is a rotational contact, the contact parts between the two are less likely to wear, no iron scraps are generated, and there is no adverse effect on the torque value, resulting in a longer service life.

[0015] As a sixth effect, the present invention has a simple overall structure, can be assembled quickly, and can reduce manufacturing costs. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is an external view of a first embodiment of a torque wrench with a digital display that allows easy torque adjustment according to the present invention. FIG. [Figure 2] 1 is an exploded view of the structure of a first embodiment of a torque wrench with a digital display that allows easy torque adjustment according to the present invention. [Figure 3] FIG. 3 is a local cross-sectional view taken along the 3-3 cross-sectional line in FIG. [Figure 4] FIG. 1 is a perspective view of a first embodiment of the torque wrench with digital display for easy torque adjustment of the present invention, showing the support part in the lowermost position, indicating that the torque value setting of the torque wrench with digital display is at the minimum. [Figure 5] Continuing from FIG. 4, this is a diagram showing the rotational operation of the first embodiment of the torque wrench with digital display that allows easy torque adjustment according to the present invention. [Figure 6]FIG. 1 is a side cross-sectional view of a first embodiment of a torque wrench with a digital display that allows for easy torque adjustment according to the present invention. By rotating the adjustment member, the moving member is driven to move linearly, and the support part is adjusted to the upper limit position. [Figure 7] FIG. 1 is another perspective view of the first embodiment of the torque wrench with digital display for easy torque adjustment of the present invention, in which the support part is in the upper limit position and the torque value setting of the torque wrench with digital display is maximum. [Figure 8] 7A to 7C are diagrams showing the rotational operation of the first embodiment of the torque wrench with digital display that allows easy torque adjustment according to the present invention. [Figure 9] FIG. 10 is an exploded view of the structure of a second embodiment of the torque wrench with a digital display that allows easy torque adjustment according to the present invention. [Figure 10] FIG. 10 is a partial cross-sectional view of a second embodiment of the torque wrench with a digital display that allows easy torque adjustment according to the present invention. [Figure 11] FIG. 10 is a perspective view of a second embodiment of the torque wrench with a digital display that allows easy torque adjustment according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0017] (First embodiment) The following describes embodiments of the present invention with reference to the accompanying drawings, but the present invention is not limited to the following embodiments. The scope of protection provided by the present invention is based on the claims. Furthermore, appropriate modifications can be made without departing from the scope of the technical concept of the present invention.

[0018] 1 to 8 show a first embodiment of a torque wrench 100 with a digital display that allows easy torque adjustment according to the present invention. The torque wrench with digital display 100 has a main body 10, a movable member 20, a trigger device 30, a torque adjusting device 40, and a torque detecting device 50.

[0019] The body 10 has an axis L1, a first end 11 through which both ends of the axis L1 pass, and a second end 12 spaced apart from the first end 11, and defines a hollow receiving space 13 inside the body 10. In this embodiment of the present invention, the main body 10 is a hollow tube with a flattened rectangular shape, and has an inlet 131 inside the receiving space 13. The main body 10 has two pivot holes 14 and 15 drilled at its first end 11, and a bore hole 16 at its second end 12. The pivot holes 14 and 15 and the bore hole 16 each communicate with the receiving space 13. The main body 10 also has a mounting hole 17 between the pivot hole 15 and the bore hole 16, which communicates with the receiving space 13.

[0020] The movable member 20 is pivotally mounted on the body 10 and has a pivotally movable relationship therewith. The movable member 20 has a connecting portion 21 and a movable portion 22 exposed to the outside of the main body 10. The movable portion 22 is formed on the connecting portion 21 extending from the first end 11 and is used for attaching to a fixed member to drive and rotate it. The movable member 20 has a pivot hole 24, and the movable member 20 is pivoted to the main body 10 by inserting a fixing pin 23 into the pivot hole 14 of the main body 10 and the pivot hole 24 of the movable member 20. The connecting portion 21 has a cylindrical connecting end 25 at a position remote from the movable portion 22, at the end of the connecting portion 21 on the side opposite the movable portion 22.

[0021] The trigger device 30 is installed in the main body 10 and contacts the connecting end 25 of the connecting part 21. The trigger device 30 is movable between a first position and a second position. In this embodiment, the trigger device 30 includes a trigger member 31 and a positioning pin 32. The trigger member 31 is pivotally mounted between the first end 11 and the second end 12 of the main body 10 by inserting the positioning pin 32 into the pivot hole 15 of the main body 10 and the pivot hole 31a of the trigger member 31. The trigger member 31 can engage with the connecting end 25 of the movable member 20. A connecting groove 311 and a return slope 312 are formed on one side of the trigger member 31 facing the connecting end 25. The return slope 312 formed on one side of the connecting groove 311 contacts the connecting end 25, and the connecting end 25 engages with the connecting groove 311 and the return slope 312.

[0022] The torque adjusting device 40 is installed on the main body 10 and connected to the trigger device 30. The torque adjusting device 40 is adjusted to a preset torque by a user, and the trigger device 30 abuts at the connection end 25 of the connection part 21. The torque adjusting device 40 includes an elastic member 41 , a moving member 42 , a drive gear 43 , and an adjusting member 44 . The elastic member 41 is rod-shaped and has a fixed portion 411 and a free end portion 412 connected to the fixed portion 411. The fixed portion 411 is connected to the trigger member 31 and fixed thereto.

[0023] The movable member 42 is a housing, and is installed in the main body 10 by sliding in the direction of the axis L1 of the main body 10. The movable member 42 is installed in the accommodation space 13 of the main body 10, and slides within the main body 10 along the introduction portion 131. The contour of the outer shape of the movable member 42 approximately matches the shape of the introduction portion 131. The moving member 42 has a linear first tooth portion 421 and a support portion 422 against which the free end portion 412 rests when subjected to force. The first tooth portion 421 is arranged linearly in parallel to the axis L1. The support portion 422 is arranged to rotate relative to the moving member 42 and moves together with the moving member 42. The moving member 42 further has a moving groove 423. The first tooth portion 421 is formed on one side of the inner edge of the moving groove 423. The free end 412 of the elastic member 41 is inserted into the movable member 42, and the support portion 422 and the abutting end 413 of the free end 412 come into contact with each other to form an abutting relationship. Due to this abutting relationship, when the movable member 42 moves, the support portion 422 moves, and the support portion 422 changes the position that the free end 412 of the elastic member 41 supports. In this embodiment, the side of the free end 412 of the elastic member 41 has the abutting end 413 with a semicircular cross section. The support portion 422 is a rotating wheel and is pivoted into the pivot hole 42a of the movable member 42 by a fixing pin 45. The support portion 422 has a semicircular support groove 422a on its periphery. The abutting end 413 of the elastic member 41 fits into the support groove 422a, and the support portion 422 comes into rotatable contact with the free end 412 of the elastic member 41.

[0024] It should be noted that the elastic member 41 Is It can withstand the torque generated when rotating the digital display torque wrench 100. The elastic member 41 is regarded as an arm, the movable member 20 is the point of application, and the support portion 422 is the fulcrum of the force. These allow the change in the distance between the support portion 422 and the movable member 20 to be adjusted, and the torque value set by the digital torque wrench 100 to be determined. In other words, when the support portion 422 is adjusted so that it is farther from the movable member 20 and the torque wrench with digital display 100 is turned, the torque acting on the support portion 422 of the movable member 20 increases. As a result, the elastic member 41 receives the reaction force of the movable member 20 in the portion between the trigger member 31 and the support portion 422, and is more likely to bend and deform within the movable member 42; in other words, the torque value setting of the torque wrench with digital display 100 is small. When the support portion 422 is adjusted so that it is closer to the movable member 20 and the torque wrench with digital display 100 is turned, the torque acting on the support portion 422 of the movable member 20 decreases. As a result, the elastic member 41 is less likely to be subjected to the reaction force of the movable member 20 in the portion between the trigger member 31 and the support portion 422, and is less likely to bend and deform within the movable member 42. In other words, the torque value setting of the torque wrench with digital display 100 is large. Therefore, in the present invention, by adjusting the support position of the support portion 422 facing the elastic member 41, the torque value of the torque wrench 100 with digital display can be adjusted. of adjustment Effect Demonstration can .

[0025] The drive gear 43 has a second tooth portion 431 arranged along a direction perpendicular to the first rotation radius R1 and the axis L1. The second tooth portion 431 of the drive gear 43 meshes with the linear first tooth portion 421. The number of teeth of the second tooth portion 431 is fewer than the number of teeth of the first tooth portion 421. In addition, the drive gear 43 has a rotation axis 432 arranged along the center line L2. The second tooth portion 431 of the drive gear 43 is arranged in a direction surrounding the center line L2. The center line L2 and the axis L1 of the drive gear 43 intersect at a right angle.

[0026] The adjustment member 44 is rotatably mounted on the main body 10 along a center line L2 and is rotated by a user. In this embodiment, the adjustment member 44 is shown in the form of a rotating disk. The adjustment member 44 is mounted on the outer peripheral edge of the main body 10. The adjustment member 44 has a second rotation radius R2, which is greater than the first rotation radius R1. The adjustment member 44 and the rotation axis 432 of the drive gear 43 are coaxially mounted, connecting the adjustment member 44 to the drive gear 43. The adjustment member 44 has an outer peripheral edge 441 along the second rotation radius R2. The adjustment member 44 is disk-shaped and is positioned by inserting a set screw 442 into a drilled hole 443 in the center of the adjustment member 44 and fastening it to the threaded hole 433 of the rotation axis 432 of the drive gear 43. In this embodiment, the second rotation radius R2 is the force arm distance that the user applies force to the adjustment member 44 to rotate it around the center line L2. When the user applies force to the adjustment member 44, the adjustment member 44 rotates together with the drive gear 43, and the meshing relationship between the drive gear 43 and the moving member 42 drives the moving member 42 to slide linearly relative to the main body 10. The position of the support part 422 relative to the free end 412 of the elastic member 41 can be easily adjusted, and the position of the support part 422 relative to the elastic member 41 can be easily adjusted. of adjustment Effect Demonstration can .

[0027] In particular, since the second rotation radius R2 of the adjustment member 44 is larger than the first rotation radius R1, the user can rotate the drive gear 43 with a relatively small force. As the drive gear 43 rotates, the drive gear 43 slides and adjusts the movable member 42 without being affected by any spring resistance. In this way, the torque value can be adjusted quickly. Furthermore, in this embodiment, the user rotates the adjustment member 44 0 to 3 times to drive the drive gear 43, thereby quickly and synchronously adjusting the moving member 42 from the minimum torque value to the maximum torque value, thereby completing the entire adjustment process. Furthermore, in this embodiment, the number of rotation steps of the adjustment member 44 is set to 0 to 1.5 times, for example. Furthermore, since the adjustment member 44 can be easily rotated, the torque adjustment device 40 can further perform fine adjustment of the torque.

[0028] The torque detector 50 is installed in a position opposite the torque adjuster 40 on the main body 10. The torque detector 50 can detect changes in the displacement of the movable member 42 and display the torque value on the display 57. This makes it easy for the user to understand the current torque value setting at a glance. The torque sensing device 50 includes a housing 51 , a circuit board 52 , a processing unit 53 , a power supply 54 , a sensor element 55 , a sensed element 56 , and a display 57 .

[0029] The display 57 is mounted on the surface of the housing 51, and the display 57 and the adjustment member 44 are located on the same side of the torque wrench 100 with digital display. The circuit board 52 is provided between the housing 51 and the main body 10. The display 57 is electrically connected to the processing device 53. The sensor member 55 and the processing device 53 are mounted on the circuit board 52. The power supply 54 is used to supply power to the torque detection device 50. The sensored member 56 is placed on the plane 424 of the moving member 42 and displaces together with it. The sensor member 55 detects the change in displacement of the sensed member 56 in a non-contact manner and generates a torque signal. The display 57 displays the torque value based on the torque signal. In this embodiment, the sensor member 55 senses a change in displacement of the sensed member 56 through the perforation 16 .

[0030] Furthermore, the mutual sensing method between the sensor member 55 and the sensed member 56 may be either optical sensing or magnetic field sensing. In the case of optical sensing, the sensor element 55 includes a light transmitting and receiving function, and the sensed element 56 includes a diffraction grating structure. When the sensed member 56 is linearly displaced, the light beam is transmitted to the diffraction grating structure, reflected by the diffraction grating structure, and formed into a corresponding optical characteristic by the light blocking, which is received by the sensing member 55 and generates a corresponding optical signal. The optical signal is processed by a processor 53 and converted into a torque signal. The display 57 then displays the corresponding torque value, completing the change in displacement of the optically sensitive moving member 42. In the case of magnetic field sensing, the sensor member 55 is a magnetic sensor and the sensed member 56 is a magnet. A non-contact fixed gap is formed between the magnetic sensor and the magnet, and when the magnet is linearly displaced along the moving member 42, the magnetic sensor senses the change in the magnetic field between them and generates a corresponding voltage signal. The processing unit 53 processes the voltage signal and converts it into a torque signal. Then, the display 57 displays the corresponding torque value, and the change in the displacement of the magnetically sensitive moving member 42 is completed.

[0031] The present invention employs non-contact sensing of the change in displacement of the moving member 42 to detect the corresponding torque value. This prevents environmental factors from affecting the sensing effect, allowing for accurate torque readings, and at the same time, the non-contact design eliminates wear and tear, extending the service life.

[0032] In addition, the main body 10 further includes a handle member 121 . The handle member 121 is for gripping and is disposed at the second end 12 of the main body 10 . The distance from the adjustment member 44 to the handle member 121 is greater than the distance from the display 57 to the handle member 121. In other words, by disposing the display 57 between the handle member 121 and the adjustment member 44 and keeping the adjustment member 44 away from the handle member 121, it is possible to avoid accidental contact during use. Furthermore, since the second rotation radius R2 of the adjustment member 44 is larger than the width of the display 57, convenience in operation can be provided.

[0033] 3 and 4, the support portion 422 is in the lowest extreme position, which means that the torque setting of the digital torque wrench 100 is at its minimum. The support portion 422 supports the free end portion 412 of the elastic member 41 at the very end and is farthest from the movable member 20. At the same time, the trigger member 31 abuts against the connecting end 25 of the movable member 20 at the connecting groove 311. At this time, the trigger device 30 is in the first position. By rotating the adjustment member 44, the user drives the moving member 42 and adjusts the position corresponding to the free end 412 of the support portion 422, thereby providing the function of quickly and easily adjusting from the lower torque limit to the upper torque limit.

[0034] 5, when the fixed member is rotated by the movable part 22 of the movable member 20 of the digital display torque wrench 100, the torque value is set to the minimum state. At this time, the elastic member 41 receives the reaction force of the movable member 20 at the portion between the trigger member 31 and the support part 422, and a relatively large bending deformation level is formed in the movable member 42. At the same time, when the movable force of the digital torque wrench 100 is greater than the torque value of the torque adjusting device 40, the trigger member 31 can engage with the connecting end 25. The trigger member 31 moves relative to the main body 10, placing the connecting end 25 on the reset slope 312 to prevent excessive locking of the screw caused by the user continuing to apply force to the fixing member. At this time, the trigger device 40 is in the second position, and the elastic member 41 provides the trigger device 40 with a force that causes the movable member 20 to return to its original state. When the torque of the digital torque wrench 100 is less than the torque value of the torque adjusting device 40 (or when the torque is removed), the return slope 312 automatically guides the trigger member 31, and the connecting groove 311 of the trigger member 31 returns to the connecting state of the connecting end 25.

[0035] As shown in Figures 6 and 7, the user adjusts the torque value by turning the adjustment member 44, and the rotation of the adjustment member 44 rotates the drive gear 43, driving the moving member 42 to linearly displace it along the axis L1 direction relative to the main body 10. That is, it moves toward the trigger member 31, and quickly adjusts the support portion 422 from the lower limit position to the upper limit position, and the torque value of the digital display torque wrench 100 is set to the maximum. In this adjustment, since the second rotation radius R2 is larger than the first rotation radius R1, the user can quickly complete the adjustment by rotating the adjustment member 44 once or twice. It saves time, reduces consumption and makes operation easier. At this time, the trigger device 30 is in the first position, and the user can rotate the rotating disk 44 to drive the moving member 42 and adjust the position of the support part 422 relative to the free end part 412, thereby quickly and easily performing the function of adjusting from the lower torque limit to the upper torque limit.

[0036] The support part 422 is quickly adjusted to the upper limit position by adjusting the movable member 42, and the support part 422 is supported by the free end part 412 of the elastic member 41 and displaced from the extreme end to the middle part, and the torque value setting of the digital display torque wrench 100 close to the position of the movable member 20 is maximum.

[0037] 8, when the fixed member is turned by the movable part 22 of the movable member 20 of the digital display torque wrench 100, the torque value is set to the maximum, so the elastic member 41 receives the reaction force of the movable member 20 in the portion between the trigger member 31 and the support part 422. At this time, the level of bending deformation generated within the movable member 42 is smaller than when the torque value is set to a small value. When the moving force of the digital display torque wrench 100 is greater than the torque value of the torque adjusting device 40, the trigger member 31 of the trigger device 30 engages with the connecting end 25, placing the connecting end 25 on the reset slope 312, allowing the user to continue applying torque to the fixing member to avoid excessive screw tightening. At this time, the trigger device 40 is set in the second position, and the elastic member 41 provides a force for the trigger device 40 to restore the movable member 20 to its original state. 3 and 4, the present invention can quickly and easily adjust the torque from the upper limit to the lower limit by simply performing the above-described adjustment operation.

[0038] As a result, the present invention achieves the objective of converting a rotary operation method into a linear movement method and further adjusting the torque value quickly. The present invention provides a user with speedy operation, and can quickly and easily perform the function of adjusting from the lower torque limit to the upper torque limit, and can also quickly and easily perform the function of adjusting from the upper torque limit to the lower torque limit. Most of the components of the torque adjusting device 40 are directly installed in the receiving space 13 of the main body 10, so the overall structure is simple, the assembly is quick, the manufacturing cost is reduced, and the industrial competitiveness is superior.

[0039] Second Embodiment 9 to 11 show a second embodiment of the present invention. In this example, the same component symbols as those in the first embodiment and the same components, structures, and functions will not be described. In this embodiment, insertion grooves 18 communicating with the receiving space 13 are formed on both sides of the body 10 . The adjustment member 44 is rotatably mounted in the insertion groove 18 of the main body 10, and at least a portion of the outer peripheral edge 441 of the adjustment member 44 is exposed from the main body 10 so that it can be rotated by the user.

[0040] The movable member 20 has a multi-stage connecting rod structure, and includes a first connecting rod 26, a second connecting rod 27 and a third connecting rod 28. The connecting part 21 is mounted on the third connecting rod 28. The movable part 22 is mounted on the first connecting rod 26, and the second connecting rod 27 is connected between the first connecting rod 26 and the third connecting rod 28.

[0041] The first connecting rod 26 has a first pivot point 261 . The first pivot point 261 is a pivot hole, and the first connecting rod 26 is pivoted into the first pivot hole 141 of the main body 10 by the first fixing pin 231 . The second connecting rod 27 has a second pivot point 271 . The second pivot point 271 is a pivot hole, and the second connecting rod 27 is pivoted to the second pivot hole 142 of the main body 10 by the second fixing pin 232 . The third connecting rod 28 has a third pivot point 281 . The third pivot point 281 is a pivot hole, and the third connecting rod 28 is pivoted to the third pivot hole 143 of the main body 10 by the third fixing pin 233 . The first connecting rod 26, the second connecting rod 27 and the third connecting rod 28 are provided with a first pivot point 261, a second pivot point 271 and a third pivot point 281, respectively, to form force application sections (actuating sections) 262, 272, 282 and reaction sections (reaction sections) 263, 273, 283. The length of each of the force application portions 262 , 272 , 282 is shorter than the length of each of the reaction portions 263 , 273 , 283 . As a result, when the torque wrench with digital display 100 applies force to a fixed member and the generated reaction force is transmitted to the trigger device 30 through feedback from the multi-stage connecting rod structure, the reaction force is reduced by the action of a lever, thereby widening the adjustment range of the torque value of the corresponding torque detection device 50. In this embodiment, the multi-stage connecting rod structure can reduce the reaction force to one half to one quarter of the original value, thereby expanding the torque value adjustment range of the torque detection device 50 by two to four times, thereby providing excellent convenience in use and widening the range of applications.

[0042] In addition, in this embodiment of the present invention, the movable part 22 is detachably installed on the first connecting rod 26 of the movable member 20. The first connecting rod 26 of the movable member 20 is different from the connecting part 21 and has a first engaging end 20a. One end of the movable part 22 has a second engaging end 22a, which is connected to the first engaging end 20a in a concave-convex manner. In this embodiment, the first engaging end 20a is a recessed groove, and the second engaging end 22a is a protruding block. The user can select a specific moving part 22 to position the moving member 20 for different tasks.

[0043] The trigger device 30 further includes a counting member 33 . The counting member 33 is disposed between the main body 10 and the connection part 21 and is electrically connected to the processing device 53 . In this embodiment of the present invention, the counting member 33 is installed on the inner wall of the main body 10, and sends a count signal based on the number of times the trigger member 31 is triggered, which is displayed on the display 57 (i.e., when the connector 21 is movable, the number of triggers is detected based on the contact relationship between the connector 21 and the counting member 33). The digital torque wrench 100 is very convenient as it can inform the user how many times the set torque value has been exceeded, allowing the clamping member to be clamped at a preset number of pounds. For ease of operation, in other embodiments, a zero reset key or a zero reset touch key is provided on the display 57, allowing the user to reset to zero and start counting again.

[0044] In this embodiment of the present invention, the torque detection device 50 further includes a housing-like carrier 58 . One end of the carrier 58 has a fixed pin 46 inserted into the pivot hole 42b of the moving member 42 and the pivot hole 581 of the carrier 58, and is connected to the moving member 42 to move together therewith. The sensed member 56 is placed on the flat surface 582 of the carrier 58, providing the same effect as previously described.

[0045] The above-mentioned examples are merely for the purpose of illustrating the present invention and are not intended to limit the scope of the claims of the present invention. Any modifications or variations based on the spirit of the present invention are within the scope of the claims of the present invention. [Explanation of symbols]

[0046] 100 Digital display torque wrench L1 axis L2 center line 10 Main Unit 11 First end 12 Second end 121 Handle member 13 Containment Space 131 Introduction 14 Pivotal hole 141 First pivot hole 142 Second pivot hole 143 Third pivot hole 15 Pivot hole 16 perforation 17 Mounting hole 18 Insertion groove 20 Movable parts 20a First engagement end 21 Connection 22 Moving parts 22a Second engagement end 23 Fixing pin 231 First fixing pin 232 Second fixing pin 233 Third fixing pin 24 Pivotal hole 25 Connection end 26 First connecting rod 261 First Cardinal Point 262 Force applying part (actuating part) 263 Resistance section (reaction section) 27 Second connecting rod 271 Second Cardinal Point 272 Force applying part (actuating part) 273 Resistance section (reaction section) 28 Second connecting rod 281 Second Cardinal Point 282 Force applying part (actuating part) 283 Resistance section (reaction section) 30 Trigger Device 31 Trigger member 31a Pivot hole 311 Connection groove 312 Resurrection slope 32 Positioning pin 33 Counting Materials 40 Torque adjustment device 41 Elastic member 411 Fixed part 412 Free end 413 Abutting end 42 Moving parts 42a Pivot hole 42b Pivot hole 421 First tooth part 422 Support part 422a Support groove 423 Moving groove 424 plane 43 Drive gear 431 Second tooth part 432 Rotational Axis 433 screw hole 44 Adjustment member 441 Outer peripheral edge 442 Fixing screw 443 Perforation 45 fixing pin 46 Fixing pin 50 Torque detection device 51 Case 52 Circuit board 53 Processing equipment 54 Power supply 55 Sensor components 56 Sensored member 57 Display 58 Career 581 Pivotal hole 582 plane R1 First turning radius R2 Second turning radius

Claims

1. A torque wrench with a digital display that allows for easy torque adjustment, a body having a first end and a second end distal to the first end; a movable member pivotally mounted on the body and forming a pivotally movable relationship with respect to each other, the movable member having a movable portion exposed to the outside of the body and a connecting portion pivotally mounted on a first end of the body, the connecting portion having a connecting end remote from the movable portion, the movable member being attached to a fixed member to be driven to rotate; a trigger device installed in the body and contacting the connection end of the connection part; a torque adjusting device mounted on the main body and connected to the trigger device, comprising an elastic member, a movable member, a drive gear, and an adjustment member, the elastic member having a fixed portion and a free end portion interconnected with the fixed portion, the fixed portion being fixed to the trigger device, the movable member being mounted on the main body so as to be slidable in the axial direction of the main body, the movable member having a support portion, the free end portion leaning against the support portion when a rotational force is applied by the torque wrench with digital display, the movable member having a first tooth portion arranged parallel to the axial direction, the drive gear having a disk-shaped second tooth portion which meshes with the first tooth portion, the adjustment member being connected to the drive gear, the second tooth portion rotating when the adjustment member is rotated by a user, and the movable member having the first tooth portion which meshes with the second tooth portion sliding linearly relative to the main body, thereby adjusting the position of the support portion with respect to the free end of the elastic member to adjust to a preset torque; a torque detection device that is installed on the main body adjacent to the adjustment member of the torque adjustment device, that detects a change in sliding displacement of the movable member in the axial direction of the main body with a sensor member, and that displays a preset torque value corresponding to the change in sliding displacement on a display; A torque wrench with a digital display that allows for easy torque adjustment.

2. The adjusting member is rotatably mounted on the main body along a center line direction, the drive gear rotates along a center line perpendicular to the axis line, the center line and the axis line intersect at a right angle, and the second tooth portion is mounted around the center line; 2. The torque wrench with digital display that allows easy torque adjustment as described in claim 1, wherein the main body has an accommodation space, the interior of the accommodation space has an introduction portion, and the moving member is installed slidably on the main body along the introduction portion.

3. the drive gear has a first radius of rotation, and the second teeth are disposed along the first radius of rotation; 3. The torque wrench with a digital display that allows easy torque adjustment as claimed in claim 2, wherein the adjustment member has a second radius of rotation, the second radius of rotation being larger than the first radius of rotation, and the drive gear and the adjustment member are installed coaxially.

4. the trigger device has a trigger member and a positioning pin, the trigger member is pivotally mounted on the main body via the positioning pin, and the trigger member is movable between a first position and a second position by rotating about the positioning pin; When the trigger member of the trigger device is in a first position, a user rotates the adjustment member to drive the moving member and adjust the position of the support portion relative to the free end portion; 4. The torque wrench with a digital display and easy torque adjustment according to claim 3, wherein when the trigger member of the trigger device is in the second position, the elastic member provides the trigger device with a force that causes the movable member to return to its original state.

5. The support part is rotatably installed on the moving member, and the support part and the free end of the elastic member are in rotatable contact with each other. The moving member is a housing. The elastic member is inserted into the moving member. When a rotational force is applied by the torque wrench with digital display, the elastic member is curved and deformed within the moving member. The moving member has a moving groove, and the first tooth portion is disposed on one side of an inner edge of the moving groove; 5. A torque wrench with a digital display that allows easy torque adjustment as claimed in claim 4, wherein the free end side of the elastic member has an abutting end with a semicircular cross section, the support portion has a support groove, and the support groove has a semicircular concave shape that mates with the abutting end.

6. 6. A torque wrench with a digital display that allows easy torque adjustment as claimed in any one of claims 1 to 5, characterized in that the torque detection device has a sensor element and a sensed element, the display is electrically connected to the sensor element, the sensed element is mounted on the moving element and displaces together with the moving element, the sensor element senses the displacement change of the sensed element in a non-contact manner to generate a torque signal, and the display displays the torque value based on the torque signal.

7. the torque detection device includes a housing, a circuit board, a processing device, and a power supply, the display is installed on a surface of the housing and is electrically connected to the processing device, the circuit board is installed between the housing and the main body, the sensor member and the processing device are installed on the circuit board, and the power supply is used to supply power to the torque detection device; 7. The torque wrench with digital display for easy torque adjustment according to claim 6, wherein the body has an accommodation space and a hole penetrating the accommodation space, and the sensor member senses the sensed member through the hole.

8. The torque detection device further includes a carrier, one end of which is connected to the moving member, and the sensed member is mounted on a surface of the carrier; The body further includes a handle member matingly mounted to the second end of the body; 8. The torque wrench with a digital display for easy torque adjustment according to claim 7, wherein the distance from the adjustment member to the handle member is greater than the distance from the display to the handle member.

9. 9. The torque wrench with digital display for easy torque adjustment according to claim 8, wherein the adjusting member is disposed on the outer peripheral edge along the second radius of rotation, and at least a portion of the outer peripheral edge is exposed from the body.

10. 9. The torque wrench with digital display that allows easy torque adjustment as claimed in claim 8, wherein the main body is hollow, the movable member is inserted into the first end and pivotally mounted on the main body, the trigger device includes a trigger member and a positioning pin, the trigger member is pivotally mounted on the main body by the positioning pin, the trigger member is connected and fixed to a fixed part of the elastic member, and the trigger member is engaged with a connecting end of the movable member, when the operating force of the torque wrench with digital display is greater than the torque value of the torque adjusting device, the trigger member engages with the connecting end and the trigger member is pivotally movable relative to the main body, and when the operating force of the torque wrench with digital display is smaller than the torque value of the torque adjusting device, the trigger member and the connecting end are in an automatic recovery connection state.

11. 11. The torque wrench with digital display that allows easy torque adjustment as claimed in claim 10, characterized in that one side of the trigger member opposite the connecting end has a connecting groove, one side of the connecting groove is connected to a return slope that is inclined toward the connecting groove, the connecting end has a circular convex shape and is engaged and connected between the connecting groove and the return slope, when the movable force of the torque wrench with digital display is greater than the torque value of the torque adjusting device, the connecting end is on the return slope, and when the movable force of the torque wrench with digital display is smaller than the torque value of the torque adjusting device, the return slope causes the trigger member to automatically restore the connection state between the connecting groove and the connecting end.

12. 11. The torque wrench with a digital display for easy torque adjustment according to claim 10, wherein the trigger device further includes a counting member, the counting member being installed between the main body and the connecting portion and electrically connected to the processing device, and the counting member transmitting a count signal based on the number of times the trigger member is triggered and displaying the count signal on the display.

13. 11. The torque wrench with digital display that allows for easy torque adjustment as described in claim 10, characterized in that the movable part is installed so as to be detachable from the movable member, a first engaging end is provided at a location different from the connecting portion of the movable member, a second engaging end is provided at one end of the movable part, and the second engaging end is connected to the first engaging end using a concave-convex system.

14. The movable member has a multi-stage connecting rod structure, and the movable member includes a first connecting rod, a second connecting rod and a third connecting rod, the first connecting rod, the second connecting rod and the third connecting rod are respectively pivoted to the main body, the connecting portion is provided on the third connecting rod, the movable portion is provided on the first connecting rod, the second connecting rod is connected between the first connecting rod and the third connecting rod, the first connecting rod has a first pivot point and is pivoted to the main body, and the second connecting rod is a 11. The torque wrench with digital display for easy torque adjustment according to claim 10, wherein the third connecting rod has two pivot points and is pivoted to the main body, the third connecting rod has a third pivot point and is pivoted to the main body, and the first connecting rod, the second connecting rod and the third connecting rod are respectively provided with an operating part and a counter-operating part by the first pivot point, the second pivot point and the third pivot point, and the length of each operating part is shorter than the length of each counter-operating part.

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