Digital display torque wrench with easy torque adjustment

Abstract

A digital display torque wrench that is easy to adjust torque, which includes a body, a lever member, a tripping device, a torque adjustment device and a torque sensing device. The torque adjustment device includes an elastic member, a moving member, a transmission gear and an adjusting member. The adjusting member drives the transmission gear to rotate in a rotational manner, thereby driving the moving member to generate a linear displacement to adjust the support position of the moving member relative to the elastic member, so as to achieve rapid adjustment of the torque value.

Description

Technical Field

[0001] The present invention relates to a torque wrench, and more particularly to a digital display torque wrench that is easy to adjust torque. Background Art

[0002] Traditional torque wrenches set and read torque values through torque scale values on the body, providing users with a judgment on whether the set torque value has been reached during the wrenching operation. However, the judgment of torque values by traditional torque wrenches is still not direct enough and is not easy to read. Summary of the Invention

[0004] Technical Problem

[0005] Therefore, later, some manufacturers introduced a torque wrench such as the one disclosed in U.S. Patent Publication No. 5,537,877 titled "Torsion wrench with display unit for displaying torsion force limit thereon". The described torque wrench is a torque wrench that displays torque values digitally. When setting the torque, the handle is rotated to drive the push rod unit to rotate, causing the moving block of the biasing unit to generate an axial displacement, so as to drive the slider of the torque detection unit to slide through the pusher, thereby changing the resistance of the corresponding variable resistor. The amount of resistance change is converted by a conversion circuit and the torque value is displayed digitally on the display. Although the described torque wrench solves the disadvantage of the traditional torque wrench being difficult to read torque values, the variable resistor of the torque wrench is easily affected by environmental factors, such as environmental moisture or vibrations generated during operation, resulting in unstable voltage output and affecting the judgment of torque values. Moreover, when adjusting the torque of the torque wrench, the handle is rotated to drive the push rod, and the second end of the push rod is threadedly connected to the pusher. When the push rod rotates, it drives the pusher to bias against the spring, so as to adjust the thrust force acting on the release mechanism device to achieve the adjustment of the torque value of the torque wrench. Adjusting the torque in this threaded manner, the user must rotate it one turn at a time. This operation must overcome the elastic force of the spring, resulting in a slow operation and not being fast enough. For example, adjusting from the minimum torque value to the maximum torque value is very time-consuming and laborious, and it is not convenient to use, and it cannot achieve the function of quickly and easily adjusting from the torque lower limit to the torque upper limit (or it can be said that it cannot achieve the function of quickly and easily adjusting from the torque upper limit to the torque lower limit).

[0006] Another example is the torque wrench named "TORQUE WRENCH" with the US Patent Application Publication No. 2016 / 031070A1. The disclosed patent is another torque wrench with an electronic display of torque values. It uses the contact relationship between the wiper on the screw and the potentiometer to sense the resistance change between the two, and then senses the torque value of the torque wrench and displays it on the display. However, the contact between the wiper and the potentiometer is likely to cause resistance changes due to temperature variations and friction, affecting the accuracy of the potentiometer, and thus the accuracy of the torque value will also be affected. Furthermore, when adjusting the torque value in the disclosed patent, the adjustment knob drives the screw to rotate. The screw is threadedly connected to the connector, and when the screw rotates, it drives the biasing spring of the connector, thereby adjusting the thrust force acting on the tripping mechanism device to achieve the adjustment of the torque value of the torque wrench. Still, this is a threaded torque adjustment, and the adjustment is still slow, time-consuming, and laborious, lacking convenience in use and still unable to achieve the function of quickly and easily adjusting from the lower torque limit to the upper torque limit (or it can be said that it cannot achieve the function of quickly and easily adjusting from the upper torque limit to the lower torque limit).

[0007] Solution to the Problem

[0008] Technical Solution

[0009] To solve the above problems, the present invention provides a digital display torque wrench that is easy to adjust the torque. It converts the rotational operation mode into a linear movement mode to quickly adjust the torque value, providing convenient operation for the user, capable of achieving the function of quickly and easily adjusting from the lower torque limit to the upper torque limit, and also capable of achieving the function of quickly and easily adjusting from the upper torque limit to the lower torque limit.

[0010] To achieve the above object, in one embodiment of the present invention, a digital display torque wrench with easy torque adjustment is provided, which includes a body, a lever, a tripping device, a torque adjustment device, and a torque sensing device. The body has a first end and a second end far from the first end; the lever is pivotally arranged on the body and can have a relative pivoting relationship. The lever has a lever part exposed outside the body and a connecting part pivotally connected to the first end of the body. The connecting part has an abutting end far from the lever part; the tripping device is arranged inside the body and contacts the abutting end of the connecting part; the torque adjustment device is arranged on the body and connected to the tripping device. The torque adjustment device can be operated by the user to adjust the preset torque. The torque adjustment device includes an elastic member, a moving member, a transmission gear, and an adjusting member. The elastic member has a fixed end and a free section connected to the fixed end. The fixed end is fixed on the tripping device. The moving member is arranged on the body so as to be able to slide along an axis direction of the body. The moving member has a bearing part for the free section to abut against when receiving a force. The moving member has a first tooth part arranged along a direction parallel to the axis direction. The transmission gear has a second tooth part, and the second tooth part meshes with the first tooth part. The adjusting member is connected to the transmission gear. The adjusting member can be rotated by the user to drive the moving member to have a linear sliding relationship relative to the body and is easy to adjust the position of the bearing part relative to the free section; and the torque sensing device is arranged on the body relative to the torque adjustment device. The torque sensing device can sense the displacement change of the moving member and display a torque value on a display.

[0011] Therefore, the present invention rotates the adjusting member to drive the transmission gear to rotate, and then drives the moving member to generate a linear displacement, so that the effect of quickly adjusting the torque value can be achieved, and it has the effects of saving time and effort.

[0012] Advantages of the Invention

[0013] Brief Description of the Drawings Description of the Drawings

[0014] The present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0015] Figure 1 is a schematic external view of the first embodiment of the digital display torque wrench with easy torque adjustment of the present invention;

[0016] Figure 2 is an exploded schematic structural view of the first embodiment of the digital display torque wrench with easy torque adjustment of the present invention;

[0017] Figure 3 is a partial sectional schematic view taken along the 3-3 sectional line of Figure 1 ;

[0018] Figure 4Perspective schematic diagram of the first embodiment of the digital display torque wrench with easy torque adjustment according to the present invention, showing that the bearing portion is in the lower limit position and the torque value of the digital display torque wrench is set to the minimum;

[0019] Figure 5 For continuity Figure 4 , Schematic diagram of the turning operation of the first embodiment of the digital display torque wrench with easy torque adjustment according to the present invention;

[0020] Figure 6 Side sectional schematic diagram of the first embodiment of the digital display torque wrench with easy torque adjustment according to the present invention, showing that the rotation of the adjusting member drives the linear displacement of the moving member, and the bearing portion is adjusted to the upper limit position;

[0021] Figure 7 Another perspective schematic diagram of the first embodiment of the digital display torque wrench with easy torque adjustment according to the present invention, showing that the bearing portion is in the upper limit position and the torque value of the digital display torque wrench is set to the maximum;

[0022] Figure 8 For continuity Figure 7 , Schematic diagram of the turning operation of the first embodiment of the digital display torque wrench with easy torque adjustment according to the present invention;

[0023] Figure 9 Exploded structural schematic diagram of the second embodiment of the digital display torque wrench with easy torque adjustment according to the present invention;

[0024] Figure 10 Partial sectional schematic diagram of the second embodiment of the digital display torque wrench with easy torque adjustment according to the present invention;

[0025] Figure 11 Perspective schematic diagram of the second embodiment of the digital display torque wrench with easy torque adjustment according to the present invention.

[0026] Description of reference numerals

[0027] 100: Digital display torque wrench L1: Axis L2: Center line

[0028] 10: Body 11: First end 12: Second end

[0029] 121: Grip member 13: Accommodation space 131: Guide portion

[0030] 14: Pivot hole 141: First pivot hole 142: Second pivot hole

[0031] 143: Third pivot hole 15: Pivot hole 16: Perforation

[0032] 17: Mounting hole 18: Slot 20: Leveraging member

[0033] 20a: First connection end 21: Connection part 22: Lever part

[0034] 22a: First connection end 23: Fixed pin 231: First fixed pin

[0035] 232: Second fixed pin 233: Third fixed pin 24: Pivot hole

[0036] 25: Contact end 26: First connecting rod 261: First pivot point

[0037] 262: Force application section 263: Resistance section 27: Second connecting rod

[0038] 271: Second pivot point 272: Force application section 273: Resistance section

[0039] 28: Second connecting rod 281: Second pivot point 282: Force application section

[0040] 283: Resistance section 30: Tripping device

[0041] 31: Tripping part 31a: Pivot hole 311: Connecting groove

[0042] 312: Reset inclined plane 32: Positioning pin 33: Counting part

[0043] 40: Torsion adjustment device 41: Elastic member 411: Fixed end

[0044] 412: Free end 413: Contact section 42: Moving part

[0045] 42a: Pivot hole 42b: Pivot hole 421: First tooth part

[0046] 422: Bearing part 422a: Support groove 423: Moving groove

[0047] 424: Plane 43: Transmission gear 431: Second tooth part

[0048] 432: Rotating shaft 433: Screw hole 44: Adjusting part

[0049] 441: Outer peripheral edge 442: Fixing screw 443: Perforation

[0050] 45: Fixed pin 46: Fixed pin 50: Torsion sensing device

[0051] 51: Housing 52: Circuit board 53: Processing unit

[0052] 54: Power supply 55: Sensing part 56: Sensed part

[0053] 57: Display 58: Carrier 581: Pivot hole

[0054] 582: Plane R1: First rotation radius R2: Second rotation radius.

[0055] The best embodiment for implementing the invention

[0056] The best implementation mode of the present invention

[0057] Combined with the accompanying drawings in the embodiments of the present invention below, the technical solutions in the embodiments of the present invention are clearly and completely described. Many specific details are set forth in the following description in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0058] Please refer to Figures 1 to 8 As shown, the present invention is a first embodiment of a digital display torque wrench 100 that is easy to adjust torque, which includes a body 10, a lever member 20, a tripping device 30, a torque adjustment device 40, and a torque sensing device 50.

[0059] The body 10 has an axis L1, and has a first end 11 and a second end 12 far from the first end 11 at both ends of the axis L1. The body 10 is hollow and has an accommodating space 13. Among them, in the embodiment of the present invention, the body 10 is a flat rectangular hollow tube, and the accommodating space 13 has a guiding portion 131. In addition, the body 10 has two pivot holes 14, 15 at the first end 11, and a through hole 16 at the second end 12. The pivot holes 14, 15 and the through hole 16 are respectively communicated with the accommodating space 13, and there is an installation hole 17 communicated with the accommodating space 13 between the pivot hole 15 and the through hole 16.

[0060] The lever member 20 is pivotally provided on the body 10 and can generate a relative pivoting relationship. The lever member 20 has a connecting portion 21 and a lever portion 22 exposed outside the body 10. The lever portion 22 is used to connect to the fastener to be driven. The connecting portion 21 extends into the first end 11. The lever member 20 is pivotally connected to the body 10 by a fixing pin 23 passing through the pivot hole 14 of the body 10 and a pivot hole 24 of the lever member 20. The connecting portion 21 has an abutting end 25 far from the lever portion 22. The abutting end 25 is a round pin, which is arranged at the end of the connecting portion 21 different from the lever portion 22.

[0061] The tripping device 30 is disposed in the body 10 and contacts the abutting end 25 of the connecting portion 21. The tripping device 30 can swing between a first position and a second position. In the embodiment of the present invention, the tripping device 30 includes a tripping member 31 and a positioning pin 32. The tripping member 31 is pivotally connected between the first end 11 and the second end 12 of the body 10 by the positioning pin 32 passing through the pivot hole 15 of the body 10 and a pivot hole 31a of the tripping member 31, and the tripping member 31 can be tripped and connected to the abutting end 25 of the pull member 20. Among them, the tripping member 31 has a connecting groove 311 on one side relative to the abutting end 25, and one side of the connecting groove 311 is connected to a reset inclined surface 312, and the abutting end 25 is tripped and connected between the connecting groove 311 and the reset inclined surface 312.

[0062] The torque adjustment device 40 is provided on the body 10 and connected to the tripping device 30. The torque adjustment device 40 can be operated by a user to adjust a preset torque so that the tripping device 30 abuts against the abutting end 25 of the connecting portion 21. The torque adjustment device 40 includes an elastic member 41, a moving member 42, a transmission gear 43, and an adjusting member 44. The elastic member 41 is a rod-shaped member having a fixed end 411 and a free section 412 connected to the fixed end 411. The fixed end 411 is combined and fixed to the tripping member 31.

[0063] The moving member 42 is generally in the form of a frame and is slidable along the axis L1 direction of the main body 10 and is disposed on the main body 10. The moving member 42 is disposed in the accommodating space 13 of the main body 10 and is slidably disposed on the main body 10 along the guide portion 131. The outer contour of the moving member 42 is substantially consistent with the shape of the guide portion 131. The moving member 42 has a first tooth portion 421 and a supporting portion 422 for the free section 412 to abut against when a force is applied. The first tooth portion 421 is disposed along a direction parallel to the axis L1 and is in the shape of a straight strip. The supporting portion 422 is rotatably disposed on the moving member 42 and moves therewith. The moving member 42 further has a moving groove 423, and the first tooth portion 421 is disposed on one side of the inner edge of the moving groove 423. The free section 412 of the elastic member 41 is penetrated through the moving member 42, so that the supporting portion 422 is in contact with the supporting section 413 of the free section 412, whereby the moving member 42 drives the supporting portion 422 when it is displaced, so as to change the supporting position of the supporting portion 422 against the free section 412 of the elastic member 41. In the embodiment of the present invention, the side surface of the free section 412 of the elastic member 41 has a supporting section 413 with a semicircular cross section, the supporting portion 422 is a roller, the supporting portion 422 is pivotally mounted on the pivot hole 42a of the moving member 42 through a fixing pin 45, and the supporting portion 422 has a supporting groove 422a, which is semicircular and concave and cooperates with the supporting section 413, so that the supporting portion 422 and the free section 412 of the elastic member 41 are in rolling contact.

[0064] It should be noted that the elastic member 41 bears the torque for the digital display torque wrench 100 to be turned. The elastic member 41 can be regarded as a lever arm, the actuating member 20 is the force application point, and the supporting portion 422 is the force fulcrum. By adjusting the distance change between the supporting portion 422 and the actuating member 20, the torque value set by the digital display torque wrench 100 can be determined. In other words, when the supporting portion 422 is adjusted to be farther away from the actuating member 20, when the digital display torque wrench 100 is turned, the moment of the actuating member 20 acting on the supporting portion 422 is larger. Therefore, the portion of the elastic member 41 between the disengaging member 31 and the supporting portion 422 is subjected to the reaction force of the actuating member 20 and is prone to bending deformation within the moving member 42, which means that the torque value set by the digital display torque wrench 100 is smaller. When the supporting portion 422 is adjusted closer to the actuating member 20, when the digital display torque wrench 100 is turned, the moment of the actuating member 20 acting on the supporting portion 422 is smaller. Therefore, the portion of the elastic member 41 between the disengaging member 31 and the supporting portion 422 is not easily subjected to the reaction force of the actuating member 20 and does not generate bending deformation within the moving member 42, which means that the torque value set by the digital display torque wrench 100 is larger. Therefore, in the present invention, by adjusting the supporting position of the supporting portion 422 relative to the elastic member 41, the torque value of the digital display torque wrench 100 can be adjusted.

[0065] The transmission gear 43 has a first rotation radius R1 and a second tooth portion 431 disposed along a direction perpendicular to the axis L1. The second tooth portion 431 meshes with the first tooth portion 421, and the number of teeth of the second tooth portion 431 is less than the number of teeth of the first tooth portion 421. In addition, the second tooth portion 431 of the transmission gear 43 is disposed around a center line L2 direction, the center line L2 is orthogonal to the axis L1, and the transmission gear 43 has a rotating shaft 432 disposed along the center line L2 direction.

[0066] Adjusting member 44 is rotatably disposed on the body 10 along the center line L2 and can be rotated by the user. In the embodiment of the present invention, the adjusting member 44 is a turntable, which is disposed on the outer peripheral edge of the body 10. The adjusting member 44 has a second rotation radius R2, and the second rotation radius R2 is greater than the first rotation radius R1. The rotating shaft 432 of the adjusting member 44 and the transmission gear 43 are coaxially arranged, so that the adjusting member 44 is connected to the transmission gear 43. Wherein, the adjusting member 44 is provided with an outer peripheral edge 441 along the second rotation radius R2, so that the adjusting member 44 is generally in a disc shape, and the adjusting member 44 is locked to a screw hole 433 of the rotating shaft 432 of the transmission gear 43 by a fixing screw 442 passing through a through hole 443 of the adjusting member 44 for positioning. In the embodiment of the present invention, the second rotation radius R2 is the lever arm distance for the user to apply force to the adjusting member 44 to rotate along the center line L2. When the user applies force to the adjusting member 44, the adjusting member 44 can synchronously drive the transmission gear 43 to rotate, and through the meshing relationship between the transmission gear 43 and the moving member 42, the moving member 42 can be driven to linearly slide relative to the body 10, and it is easy to adjust the position of the supporting portion 422 relative to the free section 412, so as to further adjust the position of the supporting portion 422 relative to the elastic member 41.

[0067] Specifically, due to the reason that the second rotation radius R2 of the adjusting member 44 is greater than the first rotation radius R1, the user can drive the transmission gear 43 to rotate with a relatively small force, so that the transmission gear 43 drives the moving member 42 to slide, and there is no spring resistance effect during the adjustment process. In this way, the effect of quickly adjusting the torque value can be achieved. Furthermore, in the embodiment of the present invention, the adjusting member 44 provides the user to rotate 0 to 3 circles to synchronously drive the transmission gear 43 to drive the moving member 42 to quickly adjust from the minimum torque value to the maximum torque value to complete the adjustment of the entire stroke. Further, in this embodiment, the rotation stroke of the adjusting member 44 is taken as an example of 0 to 1.5 circles. Moreover, since the adjusting member 44 can be easily operated and rotated, the torque adjustment device 40 can further achieve the function of fine-tuning the torque.

[0068] The torque sensing device 50 is disposed on the body 10 relative to the torque adjustment device 40. The torque sensing device 50 can sense the displacement change of the moving member 42 and display a torque value on a display 57, so that the user can intuitively understand the initial torque value setting state for convenient operation. The torque sensing device 50 includes a housing 51, a circuit board 52, a processing unit 53, a power supply 54, a sensing member 55, a sensed member 56 and the display 57.

[0069] The display 57 is disposed on the surface of the housing 51, and the display 57 and the adjusting member 44 are located on the same side of the digital display torque wrench 100. The circuit board 52 is disposed between the housing 51 and the body 10. The display 57 is electrically connected to the processing unit 53. The sensing member 55 and the processing unit 53 are disposed on the circuit board 52. The power supply 54 is used to supply power to the torque sensing device 50. The sensed member 56 is disposed on a plane 424 of the moving member 42 and moves therewith. The sensing member 55 can non-contact sense the displacement change of the sensed member 56 to generate a torque signal. The display 57 displays the torque value according to the torque signal. In the embodiment of the present invention, the sensing member 55 senses the displacement change of the sensed member 56 through the through hole 16.

[0070] Furthermore, the mutual sensing method between the sensing member 55 and the sensed member 56 can be optical sensing or magnetic field induction. If it is optical sensing, the sensing member 55 can include functions of light emission and light reception, and the sensed member 56 includes a grating structure. When the sensed member 56 linearly displaces, light is emitted to the grating structure, and the corresponding optical characteristics are generated by the reflection and light shielding of the grating structure and received by the sensing member 55 to correspondingly generate an optical signal. This optical signal is processed by the processing unit 53, converted into a torque signal, and then the corresponding torque value is displayed by the display 57 to complete the detection of the displacement change of the moving member 42 by optical sensing. If it is magnetic field induction, the sensing member 55 is a magnetic sensor, and the sensed member 56 is a magnet. There is a non-contact fixed gap between the magnetic sensor and the magnet. When the magnet linearly displaces with the moving member 42, the magnetic sensor senses the magnetic field change between the two to generate a corresponding voltage signal. The processing unit 53 processes and converts it into a torque signal according to the voltage signal, and then the corresponding torque value is displayed by the display 57 to complete the detection of the displacement change of the moving member 42 by magnetic induction.

[0071] Thus, the present invention uses non-contact sensing of the displacement change of the moving member 42 to detect the corresponding torque value, so as to avoid the influence of environmental factors on the sensing effect and accurately present the torque value. At the same time, due to the problem of no contact wear, the service life can also be increased.

[0072] In addition, the body 10 of the present invention further includes a holding member 121, which is sleeved on the second end 12 of the body 10 for holding and operating. The distance from the adjusting member 44 to the holding member 121 is greater than the distance from the display 57 to the holding member 121, that is, the display 57 is located between the holding member 121 and the adjusting member 44, and making the adjusting member 44 farther away from the holding member 121 can avoid accidental touch during use. And the second rotation radius R2 of the adjusting member 44 is greater than the width of the display 57, providing operational convenience.

[0073] Such as Figure 3 and Figure 4As shown, the bearing portion 422 is in the lower limit position, that is, the torque value of the digital display torque wrench 100 is set to the minimum. The bearing portion 422 supports at the outermost end of the free section 412 of the elastic member 41 and is farthest from the actuating member 20. At the same time, the tripping member 31 abuts against the abutting end 25 of the actuating member 20 with the connecting groove 311. At this time, the tripping device 30 is in the first position, and the adjusting member 44 can be rotated by the user to drive the moving member 42 to adjust the position of the bearing portion 422 relative to the free section 412, and the function of quickly and easily adjusting from the torque lower limit to the torque upper limit can be achieved.

[0074] As Figure 5 shown, then when the digital display torque wrench 100 rotates the fastener with the actuating portion 22 of the actuating member 20, since the torque value is set to the minimum state, the portion of the elastic member 41 between the tripping member 31 and the bearing portion 422 is subjected to the reaction force of the actuating member 20 and generates a large degree of bending deformation in the moving member 42. At the same time, when the actuating force of the digital display torque wrench 100 is greater than the torque value of the torque adjusting device 40, the tripping member 31 can trip with the abutting end 25, and the tripping member 31 pivots relative to the body 10, so that the abutting end 25 is in the reset inclined surface 312, preventing the user from continuously applying torque to the fastener and causing over-tightening. At this time, the tripping device 40 is in the second position, and the elastic member 41 can enable the tripping device 40 to provide the force for the actuating member 20 to return to its original state. When the actuating force of the digital display torque wrench 100 is less than the torque value of the torque adjusting device 40 (or when the actuating force is removed), the reset inclined surface 312 automatically guides the tripping member 31 to restore the connecting groove 311 of the tripping member 31 to the abutting state with the abutting end 25.

[0075] As Figure 6 and Figure 7 shown, the user can rotate the adjusting member 44 to adjust the torque value. The rotation of the adjusting member 44 drives the transmission gear 43 to rotate, so as to drive the moving member 42 to linearly displace relative to the body 10 along the axis L1 direction, that is, move toward the tripping member 31, and quickly adjust the bearing portion 422 from the lower limit position to the upper limit position, that is, the torque value of the digital display torque wrench 100 is set to the maximum. For such a stroke adjustment, due to the reason that the second rotation radius R2 is greater than the first rotation radius R1, the user can quickly complete the adjustment action within 1 to 2 turns of rotating the adjusting member 44, which is time-saving and energy-saving in use, and the operation is quite convenient. At this time, the tripping device 30 is in the first position, and the turntable 44 can be rotated by the user to drive the moving member 42 to adjust the position of the bearing portion 422 relative to the free section 412, and the function of quickly and easily adjusting from the torque lower limit to the torque upper limit can be achieved.

[0076] As the moving member 42 is adjusted, the abutting portion 422 is quickly adjusted to the upper limit position. The abutting portion 422 supports the free section 412 of the elastic member 41 to move to the outermost end and approximately to the middle section, and is closer to the actuating member 20. At this position, the torque value displayed by the digital display torque wrench 100 is set to the maximum.

[0077] Next, as Figure 8 shown, when the digital display torque wrench 100 uses the actuating portion 22 of the actuating member 20 to turn the fastener, since the torque value is set to the maximum state, the portion of the elastic member 41 between the disengaging member 31 and the abutting portion 422 is subjected to the reaction force of the actuating member 20 and generates a smaller degree of bending deformation in the moving member 42 than when the torque value is set smaller. When the actuating force of the digital display torque wrench 100 is greater than the torque value of the torque adjustment device 40, the disengaging member 31 of the disengaging device 30 can disengage from the abutting end 25, causing the abutting end 25 to be on the reset inclined surface 312, preventing the user from continuously applying torque to the fastener and causing over-tightening. At this time, the disengaging device 40 is located at the second position, and the elastic member 41 can enable the disengaging device 40 to provide the force for the actuating member 20 to return to its original state. After that, if you want to return to the positions as Figure 3 and Figure 4 again, as long as the above-mentioned adjustment actions are performed, the present invention can also achieve the function of quickly and simply adjusting from the torque upper limit to the torque lower limit.

[0078] Therefore, the present invention uses a rotational operation mode to be converted into a linear movement mode to achieve the purpose of quickly adjusting the torque value, providing a convenient operation for the user, being able to achieve the function of quickly and simply adjusting from the torque lower limit to the torque upper limit, and also being able to achieve the function of quickly and simply adjusting from the torque upper limit to the torque lower limit. Among them, most of the parts of the torque adjustment device 40 of the present invention are directly installed in the accommodation space 13 of the main body 10, making the overall structure simple, the assembly fast, and the manufacturing cost low, having an industrial competitive advantage.

[0079] As Figures 9 to 11 shown, this is the second embodiment of the present invention. The same component reference numerals as those in the first embodiment represent the same components, structures, and functions, and will not be described in detail in this embodiment. In this embodiment, a through groove 18 is provided on both sides of the main body 10 and communicates with the accommodation space 13. The adjusting member 44 is rotatably disposed in the through groove 18 of the main body 10, so that at least a part of the outer peripheral edge 441 of the adjusting member 44 is exposed outside the main body 10 to provide a rotational operation for the user.

[0080] The actuating member 20 is a multi-link structure, including a first link 26, a second link 27, and a third link 28. The connecting portion 21 is disposed on the third link 28, the actuating portion 22 is disposed on the first link 26, and the second link 27 is disposed between the first link 26 and the third link 28.

[0081] The first link 26 has a first pivot point 261 which is a pivot hole, enabling the first link 26 to be pivotally mounted on a first pivot hole 141 of the body 10 by a first fixing pin 231. The second link 27 has a second pivot point 271 which is a pivot hole, enabling the second link 27 to be pivotally mounted on a second pivot hole 142 of the body 10 by a second fixing pin 232. The third link 28 has a third pivot point 281 which is a pivot hole, enabling the third link 28 to be pivotally mounted on a third pivot hole 143 of the body 10 by a third fixing pin 233. And the first link 26, the second link 27 and the third link 28 are respectively provided with a force application section 262, 272, 282 and a resistance section 263, 273, 283 at the first pivot point 261, the second pivot point 271 and the third pivot point 281. The lengths of the force application sections 262, 272, 282 are smaller than the lengths of the resistance sections 263, 273, 283. Accordingly, when the reaction force generated by the digital display torque wrench 100 applied to the fastener is transmitted to the tripping device 30 through the feedback of the multi-link structure, the reaction force undergoes a lever action, enabling it to be reduced, correspondingly increasing the torque value adjustment range of the torque sensing device 50. In this embodiment, the multi-link structure can reduce the reaction force to one-half to one-fourth of the original, increasing the torque value adjustment range of the torque sensing device 50 by 2 to 4 times, providing convenience in use and increasing the applicable range.

[0082] In addition, in an embodiment of the present invention, the actuating portion 22 is detachably disposed on the first link 26 of the actuating member 20. One end of the first link 26 of the actuating member 20 away from the connecting portion 21 is provided with a first connection end 20a. One end of the actuating portion 22 has a second connection end 22a, and the second connection end 22a is connected to the first connection end 20a in a concave-convex manner. In this embodiment, the first connection end 20a is a groove and the second connection end 22a is a protrusion. This provides the user with the option to select a specific actuating portion 20 to configure the actuating member 20 according to different operation requirements.

[0083] Furthermore, the tripping device 30 further includes a counting member 33. The counting member 33 is disposed between the body 10 and the connecting portion 2 and is electrically connected to the processing unit 53. In an embodiment of the present invention, the counting member 33 is disposed on the inner wall of the body 10, enabling the counting member 33 to send a counting signal according to the number of trips of the tripping member 31 and display it on the display 57 (that is, when the connecting portion 21 swings, the connecting portion 21 contacts the counting member 33 to sense the number of trips). In this way, it is convenient for the user to know how many times the digital display torque wrench 100 has exceeded the set torque value, and accurately lock the fastener to the predetermined pound value. For the convenience of operation, in other embodiments, a zeroing button or a zeroing touch key is provided on the display 57 for the user to zero and re-count.

[0084] In the embodiment of the present invention, the torque sensing device 50 further includes a carrier 58, which is generally in the shape of a frame. One end of the carrier 58 is passed through a pivot hole 42b of the moving member 42 and a pivot hole 581 of the carrier 58 by a fixing pin 46, and is connected to the moving member 42 and moves therewith. The sensed member 56 is disposed on the plane 582 of the carrier 58, so as to provide the same functions as described above.

[0085] In summary, the present invention has the following advantages:

[0086] 1. The present invention adopts a rotational operation mode converted into a linear movement mode, which can achieve the function of quickly and easily adjusting from the lower torque limit to the upper torque limit, and can also achieve the function of quickly and easily adjusting from the upper torque limit to the lower torque limit.

[0087] 2. The second rotation radius of the adjusting member of the present invention is greater than the first rotation radius of the transmission gear, so the effect of quickly adjusting the torque value can be achieved, and the effect of saving time is achieved; furthermore, the present invention uses the transmission gear to mesh with the moving member for transmission, and there is no resistance of the spring in the prior art during the adjustment process, and the effect of saving effort is also achieved.

[0088] 3. The second rotation radius of the adjusting member of the present invention is large, and it can be easily rotated, so that the torque adjusting device has the function of finely adjusting the torque.

[0089] 4. The torque sensing device of the present invention adopts non-contact induction, which can avoid the influence of the external environment on the sensing effect, has a long service life, and thus realizes the setting of high-precision torque values.

[0090] 5. The contact relationship between the bearing portion and the elastic member of the present invention is a rolling contact, and no wear will occur when they contact, and no iron filings will be generated, which will not affect the performance of the torque value, and has the effect of improving the service life.

[0091] 6. The overall structure of the present invention is simple, the assembly is fast, and the manufacturing cost is low. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

Claims

1. A digital display torque wrench that is easy to adjust torque, characterized in that, Comprising: A body having a first end and a second end remote from the first end; A lever member pivotally provided on the body and capable of generating a relative pivoting relationship. The lever member has a lever portion exposed outside the body and a connecting portion pivotally connected to the first end of the body. The connecting portion has an abutting end remote from the lever portion; A tripping device provided inside the body and in contact with the abutting end of the connecting portion; A torque adjusting device provided on the body and connected to the tripping device. The torque adjusting device can be operated by a user to adjust a preset torque. The torque adjusting device includes an elastic member, a moving member, a transmission gear and an adjusting member. The elastic member has a fixed end and a free section connected to the fixed end. The fixed end is fixed to the tripping device. The moving member is slidably provided on the body along an axis direction of the body. The moving member has a bearing portion for the free section to abut against when receiving a force. The moving member has a first tooth portion provided along a direction parallel to the axis. The transmission gear has a second tooth portion, and the second tooth portion meshes with the first tooth portion. The adjusting member is connected to the transmission gear. The adjusting member can be rotated by a user to drive the moving member to generate a linear sliding relationship relative to the body and is easy to adjust the position of the bearing portion relative to the free section; A torque sensing device provided on the body relative to the torque adjusting device. The torque sensing device can sense the displacement change of the moving member and display a torque value on a display; 2. The digital display torque wrench that is easy to adjust torque according to claim 1, characterized in that, The adjusting member is rotatably provided on the body along a center line direction. The transmission gear rotates along a center line provided in a direction perpendicular to the axis. The center line is orthogonal to the axis. The second tooth portion is arranged around the center line; The body has a receiving space, and a guiding portion is provided in the receiving space. The moving member is slidably provided on the body along the guiding portion; 3. The digital display torque wrench that is easy to adjust torque according to claim 2, characterized in that, The transmission gear has a first rotation radius, and the second tooth portion is arranged along the first rotation radius; The adjusting member has a second rotation radius, and the second rotation radius is greater than the first rotation radius. The transmission gear and the adjusting member are coaxially provided; 4. The digital display torque wrench that is easy to adjust torque according to claim 3, characterized in that, The adjusting member and the tripping device can swing between a first position and a second position; When the tripping device is in the first position, the adjusting member can be rotated by a user to drive the moving member to adjust the position of the bearing portion relative to the free section; When the tripping device is in the second position, the elastic member can enable the tripping device to provide a force for the lever member to return to its original state; 5. The digital display torque wrench that is easy to adjust torque according to claim 4, characterized in that, The bearing portion is rotatably provided on the moving member, and the bearing portion is in rolling contact with the free end of the elastic member. The moving member is a frame body, and the elastic member passes through the moving member. When the digital display torque wrench is turned and a force is applied, the elastic member can be bent and deformed inside the moving member; The moving member has a moving groove, and the first tooth portion is provided on one side of the inner edge of the moving groove; The side surface of the free section of the elastic member has a abutting section with a semi-circular cross-section, and the bearing portion has a supporting groove, and the supporting groove is semi-circular concave and matches with the abutting section; 6. The digital display torque wrench that is easy to adjust torque according to any one of claims 1 to 5, characterized in that, The torque sensing device has a sensing member and a sensed member. The display is electrically connected to the sensing member. The sensed member is disposed on the moving member and moves therewith. The sensing member can non - contact sense the displacement change of the sensed member to generate a torque signal, and the display displays the torque value according to the torque signal.

7. The digital display torque wrench that is easy to adjust torque according to claim 6, characterized in that, The torque sensing device includes a housing, a circuit board, a processing unit and a power supply. The display is disposed on the surface of the housing and electrically connected to the processing unit. The circuit board is disposed between the housing and the body. The sensing member and the processing unit are disposed on the circuit board. The power supply is used to supply power to the torque sensing device. The body has a receiving space and a through - hole penetrating the receiving space. The sensing member senses the sensed member through the through - hole.

8. The digital display torque wrench that is easy to adjust torque according to claim 7, characterized in that, The torque sensing device further includes a carrier, one end of which is connected to the moving member, and the sensed member is disposed on the surface of the carrier. The body further includes a gripping member sleeved on the second end of the body. The distance from the adjusting member to the gripping member is greater than the distance from the display to the gripping member.

9. The digital display torque wrench that is easy to adjust torque according to claim 8, characterized in that, The adjusting member has an outer periphery along the second rotation radius, and at least a part of the outer periphery is exposed outside the body.

10. The digital display torque wrench that is easy to adjust torque according to claim 8, characterized in that, The body is hollow. The actuating member extends into the first end and is pivotally connected to the body. The tripping device includes a tripping member and a positioning pin. The tripping member is pivotally connected to the body through the positioning pin. The fixed end of the elastic member is fixedly combined with the tripping member, and the tripping member can be detachably connected to the abutting end of the actuating member. When the force applied to the digital display torque wrench is greater than the torque value of the torque adjusting device, the tripping member can trip from the abutting end, and the tripping member pivots relative to the body. When the force applied to the digital display torque wrench is less than the torque value of the torque adjusting device, the tripping member and the abutting end can automatically return to the original abutting state.

11. The digital display torque wrench that is easy to adjust torque according to claim 10, characterized in that, One side of the tripping member relative to the abutting end has a connecting groove. One side of the connecting groove is connected to a reset inclined surface. The abutting end is a round pin. The abutting end is detachably connected between the connecting groove and the reset inclined surface. When the force applied to the digital display torque wrench is greater than the torque value of the torque adjusting device, the abutting end is on the reset inclined surface. When the force applied to the digital display torque wrench is less than the torque value of the torque adjusting device, the reset inclined surface automatically guides the tripping member to make the connecting groove return to the abutting state with the abutting end.

12. The digital display torque wrench that is easy to adjust torque according to claim 10, characterized in that, The tripping device further includes a counting member, which is disposed between the body and the connecting portion and electrically connected to the processing unit. The counting member can send a counting signal according to the number of trips of the tripping member and display it on the display.

13. The digital display torque wrench that is easy to adjust torque according to claim 10, characterized in that, The actuating portion is detachably disposed on the actuating member. One end of the actuating member away from the connecting portion has a first connecting end. One end of the actuating portion has a second connecting end, and the second connecting end is connected to the first connecting end in a concave - convex manner.

14. The digital display torque wrench that is easy to adjust torque according to claim 10, characterized in that, The actuating member is a multi-link structure. The actuating member includes a first link, a second link, and a third link. The first link, the second link, and the third link are respectively pivotally provided on the body. The connecting portion is provided on the third link, and the actuating portion is provided on the first link. The second link is located between the first link and the third link. The first link has a first pivot point pivotally provided on the body. The second link has a second pivot point pivotally provided on the body. The third link has a third pivot point pivotally provided on the body. Moreover, the first link, the second link, and the third link are respectively provided with a force application section and a resistance section at the first pivot point, the second pivot point, and the third pivot point. The length of each force application section is less than the length of each resistance section.

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