TWI734632B - Digital display torque wrench for easy adjustment of torque - Google Patents

Abstract

The invention provides a digital display torque wrench which is easy to adjust the torque. The torque adjusting device includes an elastic piece, a moving piece, a transmission gear, and an adjusting piece. The adjusting part drives the transmission gear to rotate in a rotating manner, thereby driving the moving part to produce a linear displacement, so as to adjust the supporting position of the moving part relative to the elastic part, so as to achieve the effect and purpose of quickly adjusting the torque value.

Description

Digital display torque wrench for easy adjustment of torque

The present invention relates to a torque wrench, and particularly relates to a digital display torque wrench that is easy to adjust the torque.

Press, the traditional torque wrench sets and reads the torque through the torque scale value on the body, and provides the user to judge whether the set torque value has been reached during the turning operation. However, the traditional torque wrench is still not straightforward enough to interpret the torque value, nor is it easy to read.

Therefore, some companies later introduced a torque wrench such as "Torsion wrench with display unit for displaying torsion force limit thereon" in the US Patent Publication No. 5,537,877. The torque wrench is a torque wrench that digitally displays the torque value. When the torque is set, the handle is rotated to drive the push rod unit to rotate, so that the actuating block of the biasing unit produces axial displacement to drive The pushing member drives the slider of the torque detection unit to slip, thereby changing the resistance of the corresponding variable resistor, so that the change in resistance is converted by the conversion circuit and the torque value is displayed on the display in a digital manner. Although the torque wrench solves the shortcoming of the traditional torque wrench that it is difficult to read the torque value, the variable resistance of the torque wrench is easily affected by environmental factors, such as environmental moisture or shaking during operation, which causes the voltage The output is unstable, which affects the judgment of the torque value. Moreover, when adjusting the torque, the torque wrench drives the push rod by rotating the handle, and the second end of the push rod is threadedly connected to the pusher and rotates on the push rod. When driving the pusher to bias the spring, in order to adjust the thrust acting on the tripping mechanism device, to achieve the torque value of the torque wrench. In this way, the torque is adjusted by the thread type, and the user must rotate and adjust the action circle by circle. The elastic force of the spring must be overcome, resulting in the operation being too slow and not fast enough, such as increasing from the minimum torque value to the maximum torque value, which is very time-consuming and labor-intensive. It is not convenient to use and cannot achieve a quick and easy adjustment from the lower limit of the torque to the torque. The function of the upper limit (or it can be said that the function of adjusting the upper limit of torque to the lower limit of torque cannot be achieved quickly and easily).

Another example is the "TORQUE WRENCH" torque wrench of US Invention Patent Publication No. 2016/031070A1, which is another torque wrench that electronically displays the torque value, which uses the contact relationship between the scraper on the screw and the film potentiometer , To sense the resistance change between the two, and then sense the torque value of the torque wrench and display it on the display. However, the contact between the wiper and the thin film potentiometer is likely to cause changes in resistance due to temperature changes and friction, which will affect the accuracy of the potentiometer, so the accuracy of the torque value will also be affected. Furthermore, in adjusting the torque value, the disclosed patent uses an adjusting knob to drive the screw to rotate, and the screw is screwed to the connector. When the screw rotates, the connector is driven to bias the spring, thereby adjusting the resistance acting on the trip mechanism device. The thrust reaches the torque value of the adjustable torque wrench. This is still the threaded adjustment torque. The adjustment is still slow, time-consuming, and labor-consuming. It is not convenient to use, and it still cannot achieve the function of quickly and easily adjusting from the lower limit of the torque to the upper limit of the torque. (Or it can be said that the function of quickly and easily adjusting from the upper limit of torque to the lower limit of torque cannot be achieved).

In order to solve the above-mentioned problems, the present invention discloses a digital display torque wrench that is easy to adjust the torque, which utilizes a rotary operation mode to be converted into a linear movement mode to achieve rapid adjustment of the torque value, provide users with convenient operation, and achieve a quick and simple lower limit of torque The function of adjusting to the upper limit of torque can also achieve the function of quickly and easily adjusting from the upper limit of torque to the lower limit of torque.

To achieve the above objective, the present invention provides in one embodiment a digital display torque wrench that is easy to adjust the torque, which includes a body, a puller, a trip device, a torque adjustment device, and a torque sensing device. The main body has a first end and a second end away from the first end; the flipping member is pivoted on the main body and can produce a relative pivotal relationship, the flipping member has a flipping portion exposed outside the body and a pivot connection The connecting part at the first end of the main body has an abutting end away from the flipping part; the tripping device is arranged in the body and is in contact with the abutting end of the connecting part; the torque adjusting device is arranged on the main body and is connected to the tripping The torque adjusting device can be operated by the user to adjust the preset torque. The torque adjusting device includes an elastic piece, a moving piece, a transmission gear, and an adjusting piece. The elastic piece has a fixed end and a fixed end connected to it. The free section, the fixed end is fixed to the tripping device, the moving part is slidably arranged on the main body along an axis direction of the main body, the moving part has a bearing portion for the free section to bear against when a force is applied, and the moving part has an edge With a first tooth part arranged parallel to the axial direction, the transmission gear has a second tooth part, the second tooth part meshes with the first tooth part, the adjusting member is connected to the driving gear, and the adjusting member can be rotated by the user to drive the movement The part produces a linear sliding relationship with the body and is easy to adjust the position of the supporting portion relative to the free section; and the torsion sensing device is arranged at the position of the body relative to the torsion adjusting device, and the torsion sensing device can sense the displacement change of the moving part. A display shows a torque value.

Thereby, the present invention adopts the rotary operation adjusting member to make the adjusting member drive the transmission gear to rotate, thereby driving the moving member to produce linear displacement, so that the effect of quickly adjusting the torque value can be achieved, and it has the effect of saving time and effort.

The exemplary embodiments of the present invention are described in detail below with reference to the drawings, and are not intended to limit the technical principles of the present invention to specific disclosed embodiments, and the scope of the present invention is only limited by the scope of the patent application, covering alternatives, modifications and Equivalent.

Please refer to Figures 1 to 8, the present invention is a first embodiment of a digital display torque wrench 100 that is easy to adjust the torque. Device 40 and a torque sensing device 50.

The main body 10 has an axis L1, and has a first end 11 and a second end 12 away from the first end 11 at both ends of the axis L1. The main body 10 is hollow and has an accommodating space 13. Wherein, in the implementation of the present invention, the main body 10 has a flat rectangular hollow tube shape, 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 connected to the accommodating space 13, and the pivot hole 15 and the through hole There is a mounting hole 17 between 16 and the accommodating space 13.

The flipping member 20 is pivoted on the main body 10 and can produce a relative pivotal relationship. The flipping member 20 has a connecting portion 21 and a flipping portion 22 exposed outside the main body 10, and the flipping portion 22 is used to connect with Fasteners to be driven. The connecting portion 21 extends into the first end 11, and the flipping member 20 is pivotally connected to the main body by a fixing pin 23 through a pivot hole 14 of the main body 10 and a pivot hole 24 of the flipping member 20 10. The connecting portion 21 has an abutting end 25 away from the flipping portion 22, and the abutting end 25 is a round pin disposed at the end of the connecting portion 21 different from the flipping portion 22.

The tripping device 30 is arranged in the main body 10 and contacts the abutting end 25 of the connecting portion 21. The trip 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 penetrated through the pivot hole 15 of the main body 10 and one of the pivoting holes of the tripping member 31 by the positioning pin 32. 31 a is pivotally connected between the first end 11 and the second end 12 of the main body 10, and the tripping member 31 can be tripped and connected to the abutting end 25 of the flipping member 20. Wherein, the jumper 31 has a connecting groove 311 on one side opposite to the abutting end 25, a side of the connecting groove 311 is connected to a resetting inclined surface 312, and the abutting end 25 is located between the connecting groove 311 and the resetting inclined surface 312 Jump out of the connection between.

The torque adjusting device 40 is provided with the main body 10 and connected to the tripping device 30. The torque adjusting device 40 can be operated by the user to adjust the preset torque so that the tripping device 30 abuts against the abutting end 25 of the connecting portion 21, The torque adjusting 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 rod-shaped, and has a fixed end 411 and a free section 412 connected to the fixed end 411, and the fixed end 411 is combined and fixed to the jumper 31.

The moving member 42 is generally a frame and is provided on the main body 10 so as to be slidable along the axis L1 direction of the main body 10. The moving element 42 is disposed in the accommodating space 13 of the main body 10 and is slidably disposed on the main body 10 along the guiding portion 131. The outline of the moving element 42 substantially conforms to the shape of the guiding portion 131. The moving member 42 has a first tooth portion 421 and a supporting portion 422 for the free section 412 to abut when a force is applied. The first tooth portion 421 is arranged along a direction parallel to the axis L1 and has a straight strip shape, and the supporting portion 422 is rotatably arranged on the moving member 42 and moves with it. The moving member 42 further has a moving groove 423, and the first tooth portion 421 is provided on one side of the inner edge of the moving groove 423. The free section 412 of the elastic member 41 penetrates the moving member 42, so that the supporting portion 422 and the abutting section 413 of the free section 412 are in contact and abutting relationship, so that when the moving member 42 is displaced, the supporting portion 422 is driven to change the supporting portion 422. The supporting portion 422 abuts against the supporting position of 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 an abutting section 413 with a semicircular cross-section. In the pivot hole 42a of the member 42, the supporting portion 422 has a supporting groove 422a, and the supporting groove 422a is in a semi-circular concave shape to cooperate 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.

It should be noted that the elastic member 41 is subjected to the digital display of the torque wrench and the digital display of the torque of the torque wrench 100 is turned. The elastic member 41 can be regarded as a force arm, the pull member 20 is the force application point, and the supporting portion 422 is the force fulcrum. Therefore, by adjusting the change of the distance between the supporting portion 422 and the trigger 20, the torque value set by the digitally displayed torque wrench 100 can be determined. In other words, when the supporting portion 422 is adjusted to be farther away from the triggering member 20, the digital display shows that when the torque wrench 100 is turned, the torque of the triggering member 20 acting on the supporting portion 422 is greater, so the elastic member 41 is on the tripping member 31. The portion between the supporting portion 422 receives the reaction force of the pulling member 20 and is liable to bend and deform in the moving member 42, which means that the torque value of the digital display torque wrench 100 is set to be small. When the supporting portion 422 is adjusted closer to the triggering member 20, the digital display shows that when the torque wrench 100 is turned, the torque of the triggering member 20 acting on the supporting portion 422 is small, so the elastic member 41 is located on the tripping member 31 to the supporting member 422. The part between the parts 422 is not susceptible to the reaction force of the pulling member 20 and bending deformation occurs in the moving part 42, which means that the torque value of the digital display torque wrench 100 is set to be larger. Therefore, the present invention adjusts the supporting part The supporting position of the 422 relative to the elastic member 41 can adjust the torque value of the digital display torque wrench 100.

The transmission gear 43 has a first rotation radius R1 and a second tooth 431 arranged along a direction perpendicular to the axis L1. The second tooth 431 is meshed with the first tooth 421, and the second tooth 431 The number of teeth is smaller than the number of teeth of the first tooth portion 421. In addition, the second tooth portion 431 of the transmission gear 43 is arranged around a centerline L2 direction, the centerline L2 is orthogonal to the axis L1, and the transmission gear 43 has a rotating shaft 432 arranged along the centerline L2 direction.

The adjusting member 44 is rotatably arranged on the main 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 provided on the outer periphery of the main body 10. The adjustment member 44 has a second rotation radius R2, the second rotation radius R2 is greater than the first rotation radius R1, the adjustment member 44 and the rotation shaft 432 of the transmission gear 43 are coaxially arranged, so that the adjustment 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 radius of rotation R2, so that the adjusting member 44 is roughly disc-shaped, and the adjusting member 44 is locked by a fixing screw 442 passing through a through hole 443 of the adjusting member 44 The screw hole 433 of the rotating shaft 432 of the transmission gear 43 is combined and positioned. In the embodiment of the present invention, the second radius of rotation R2 is the distance of the force arm that the user applies force to the adjusting member 44 to rotate about the center line L2. When the user applies force to the adjusting member 44, the adjusting member 44 can drive and drive synchronously. Gear 43, and through the meshing relationship between the transmission gear 43 and the moving part 42, so that the moving part 42 can be driven to produce a linear sliding relative to the body 10, and it is easy to adjust the position of the supporting portion 422 relative to the free section 412 to achieve further adjustment of the bearing The position of the back portion 422 relative to the elastic member 41.

In particular, because the second radius of rotation R2 of the adjusting member 44 is greater than the first radius of rotation R1, the user can drive the transmission gear 43 with a relatively small force, so that the transmission gear 43 drives the moving member 42 to slide. And there is no spring resistance influence during the adjustment process, so that the effect of adjusting the torque value can be quickly achieved. Furthermore, in the embodiment of the present invention, the adjusting member 44 provides the user to rotate 0~3 turns 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 . Furthermore, in this embodiment, the rotation stroke of the adjusting member 44 is taken as an example from 0 to 1.5 turns. Furthermore, since the adjusting member 44 can be easily operated and rotated, the torque adjusting device 40 can achieve the function of finely adjusting the torque.

The torque sensing device 50 is disposed at a position of the main body 10 relative to the torque adjusting device 40. The torque sensing device 50 can sense the displacement change of the moving part 42 and display a torque value on a display 57 for the user to intuitively Understand the setting status of the original torque value, which is convenient for operation and use. The torque sensing device 50 includes a housing 51, a circuit board 52, a processing unit 53, a power supply 54, a sensing element 55, a sensing element 56 and the display 57.

The display 57 is arranged 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 arranged between the housing 51 and the main body 10, the display 57 is electrically connected to the processing unit 53, the sensing element 55 and the processing unit 53 are arranged on the circuit board 52, and the power supply 54 is used for powering the torque sensing device 50. The sensing element 56 is disposed on a plane 424 of the moving element 42 and is displaced with it. The sensing element 55 can non-contactly sense the displacement change of the sensing element 56 to generate a torsion signal. The display 57 is based on the torsion signal. The torque value is displayed. In the embodiment of the present invention, the sensing element 55 senses the displacement change of the sensing element 56 through the through hole 16.

It is further explained that the mutual sensing method of the sensing element 55 and the sensed element 56 can be light sensing or magnetic field sensing. For a light sensor, the sensing element 55 can include light emitting and light receiving functions, and the sensed element 56 includes a grating structure. When the sensed element 56 is linearly displaced, light is emitted to the grating structure through the grating. The corresponding optical features generated by the reflection and shading of the structure are received by the sensing element 55 to generate corresponding optical signals. The optical signals are processed by the processing unit 53 and converted into a torque signal, and the corresponding output torque value is displayed by the display 57. The change of the displacement of the light sensing moving part 42 is completed. If it is a magnetic field sensor, the sensing element 55 is a magnetic sensor, and the sensed element 56 is a magnet. There is a non-contact fixed gap between the magnetic sensor and the magnet. When the magnet moves linearly with the moving part 42, the magnetic sensor induces two The magnetic field changes between the two to generate a corresponding voltage signal. The processing unit 53 can process and convert the torque signal according to the voltage signal, and then display the corresponding output torque value on the display 57 to complete the change of the displacement of the magnetic induction movable member 42.

In this way, the present invention uses non-contact sensing of the displacement change of the moving part 42 to detect the corresponding torque value, so that environmental factors can be avoided to affect the sensing effect, the torque value is accurately presented, and there is no contact wear problem. , It also increases the life span of use.

In addition, the main body 10 of the present invention further includes a holding member 121 sleeved on the second end 12 of the main body 10 for holding operations. The distance between the adjusting part 44 and the holding part 121 is greater than the distance between the display 57 and the holding part 121, that is, the display 57 is located between the holding part 121 and the adjusting part 44, and the adjusting part 44 is farther away from the holding part 121 to avoid use The accidental touch situation in. In addition, the second radius of rotation R2 of the adjusting member 44 is larger than the width of the display 57, which provides convenience in operation.

As shown in FIGS. 3 and 4, the supporting portion 422 is at the lower limit position, that is, the torque value of the digital display torque wrench 100 is set to the minimum. The supporting portion 422 is supported at the extreme end of the free section 412 of the elastic member 41 and is farthest from the trigger member 20. At the same time, the jumping member 31 abuts the abutting end 25 of the trigger member 20 with the receiving 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 supporting portion 422 relative to the free section 412, which can achieve quick and easy adjustment from the lower limit of the torque to the upper limit of the torque. Function.

As shown in FIG. 5, when the torque wrench 100 turns the fastener with the pull portion 22 of the pull member 20, the elastic member 41 is located between the jumping member 31 and the supporting portion 422 because the torque value is set to the minimum state. The middle part is subjected to the reaction force of the pulling member 20 to produce a greater degree of bending deformation in the moving member 42. At the same time, the digital display of the torque wrench 100 is greater than the torque value of the torque adjusting device 40, the jumping member 31 It can be tripped from the abutting end 25, and the tripping member 31 pivots relative to the body 10, so that the abutting end 25 is at the reset slope 312, which prevents the user from continuously applying torsion to the fastener and causing excessive screw locking. At this time, the tripping device 40 is located in the second position, and the elastic member 41 can enable the tripping device 40 to provide the force of the pulling member 20 to return to its original state. When the force of the torque wrench 100 is displayed digitally and the torque value of the torque adjusting device 40 is small (or when the force is removed), the reset slope 312 automatically guides the jumper 31 to connect the jumper 31 The groove 311 is restored to the abutting state with the abutting end 25.

As shown in Figures 6 and 7, the user has to rotate the adjusting member 44 to adjust the torque value, whereby the adjusting member 44 rotates to drive the transmission gear 43 to rotate, so as to drive the moving member 42 to linearly shift relative to the main body 10 along the axis L1, that is Move toward the jumper 31, and quickly adjust the supporting 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, so the stroke adjustment, because the second radius of rotation R2 is greater than the first Because of a radius of rotation R1, the user can quickly complete the adjustment within 1 to 2 turns of the adjustment member 44, which saves time and consumption, and is very convenient to operate. At this time, the trip device 30 is located in the first position. The turntable 44 can be rotated by the user to drive the moving member 42 to adjust the position of the supporting portion 422 relative to the free section 412, which can achieve the function of quickly and easily adjusting from the lower limit of the torque to the upper limit of the torque.

The supporting portion 422 is quickly adjusted to the upper limit position along with the adjustment of the moving member 42. The free section 412 of the supporting portion 422 supported by the elastic member 41 is displaced to the extreme end and moves to about the middle section, and is closer to the triggering member 20. This position digitally displays that the torque value of the torque wrench 100 is set to the maximum.

Next, as shown in FIG. 8, when the digital display torque wrench 100 turns the fastener with the pulling part 22 of the pulling member 20, since the torque value is set to the maximum state, the elastic member 41 is positioned between the jumping member 31 and the supporting portion 422. The part in between is subjected to the reaction force of the pulling member 20 and the degree of bending deformation in the moving member 42 is smaller than that when the torque value is set to be small. The digital display shows that when the pulling force of the torque wrench 100 is greater than the torque value of the torque adjusting device 40, the trip piece 31 of the trip device 30 can trip with the abutting end 25, so that the abutting end 25 is at the reset slope 312, avoiding use The person continues to apply torque to the fastener, resulting in excessive screw locking. At this time, the tripping device 40 is located in the second position, and the elastic member 41 can enable the tripping device 40 to provide the force of the pulling member 20 to return to its original state. Afterwards, if you want to return to the position shown in Figs. 3 and 4, just follow the aforementioned adjustment action, so that the present invention can also achieve the function of quickly and easily adjusting from the upper limit of the torque to the lower limit of the torque.

In this way, the present invention uses the rotary operation mode to convert to the linear movement mode to achieve the purpose of quickly adjusting the torque value, providing users with convenient operation, and achieving the function of quickly and easily adjusting from the lower limit of the torque to the upper limit of the torque. The function of adjusting from the upper limit of torque to the lower limit of torque. Among them, most of the components of the torque adjusting device 40 of the present invention are directly installed in the accommodating space 13 of the main body 10, so that the overall structure is simple, the assembly is fast, the manufacturing cost is low, and it has an industrial competitive advantage.

As shown in FIG. 9 to FIG. 11, it is the second embodiment of the present invention. The same component numbers as in the first embodiment represent the same components, structures, and functions, and will not be repeated in this embodiment. In this embodiment, a through groove 18 is provided on both sides of the main body 10 to communicate with the accommodating space 13, and the adjusting member 44 is rotatably arranged 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 from the main body. 10. Provide user rotation operation.

The pulling member 20 has a multi-link structure and includes a first link 26, a second link 27 and a third link 28. The connecting portion 21 is provided on the third connecting rod 28, the pulling portion 22 is provided 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.

The first connecting rod 26 has a first pivot point 261, and the first pivot point 261 is a pivot hole, so that the first connecting rod 26 is pivoted to a first pivot hole 141 of the main body 10 by a first fixing pin 231, The second link 27 has a second pivot point 271, and the second pivot point 271 is a pivot hole, so that the second link 27 is pivoted to a second pivot hole 142 of the main body 10 by a second fixing pin 232, The third link 28 has a third pivot point 281, and the third pivot point 281 is a pivot hole, so that the third link 28 is pivoted to a third pivot hole 143 of the main body 10 with a third fixing pin 233. And the first link 26, the second link 27, and the third link 28 are respectively provided with a first pivot point 261, a second pivot point 271, and a third pivot point 281 with a force application section 262, 272, 282 And a resistance section 263, 273, 283, the length of each force application section 262, 272, 282 is less than the length of each resistance section 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 is leveraged so that it can be reduced, corresponding to the torque The adjustment range of the torque value of the sensing device 50 is increased. In this embodiment, the multi-link structure can reduce the reaction force to one-half to one-fourth of the original, according to which the torque value adjustment range of the torque sensing device 50 is increased by 2 to 4 times. Provide convenience in use and increase the scope of application.

In addition, in the embodiment of the present invention, the pull portion 22 is a detachable first link 26 provided on the pull member 20, and the first link 26 of the pull member 20 is different from the connecting portion 21 with a first link. The connecting end 20a, one end of the flipping portion 22 has a second connecting end 22a, and the second connecting end 22a is connected to the first connecting end 20a in a concave and convex manner. In this embodiment, the first connecting end 20a is a groove, and the second connecting end 22a is a groove. The connecting end 22a is a bump. In this way, it is provided that the user selects a specific flip part 20 to be arranged on the flip part 20 according to different operation requirements.

Furthermore, the tripping device 30 further includes a counting element 33, which is disposed between the main body 10 and the connecting portion 21, and is electrically connected to the processing unit 53. In the embodiment of the present invention, the counting member 33 is provided on the inner wall of the main body 10, so that the counting member 33 can send a counting signal according to the number of trips of the tripping member 31 and display it on the display 57, (that is, the connecting portion 21 is displayed on the display 57). When swinging, the connecting portion 21 and the counting member 33 are in contact with each other to sense the number of trips), which facilitates the user to understand how many times the digital torque hand 100 exceeds the set torque value, and accurately lock the fastener to a predetermined pound value. In order to facilitate the operation, in other embodiments, a reset button or a reset touch key is provided on the display 57 so that the user can reset to zero and recount.

In the embodiment of the present invention, the torsion force sensing device 50 further includes a supporting body 58, which is generally frame-shaped. One end of the supporting body 58 is penetrated through a pivot hole 42b of the movable member 42 and the supporting body with a fixed pin 46. A pivot hole 581 of 58 is connected to the movable member 42 and moves with it, and the sensed member 56 is disposed on the plane 582 of the carrier 58 to provide the same effect as described above.

In summary, the present invention has the following advantages:

1. The linear movement method converted into the rotary operation mode of the present invention can achieve the function of quickly and easily adjusting from the lower limit of torque to the upper limit of torque, and can also achieve the function of quickly and easily adjusting from the upper limit of torque to the lower limit of torque.

2. The second radius of rotation of the adjusting member of the present invention is greater than the first radius of rotation of the transmission gear, so that the effect of quickly adjusting the torque value can be achieved, and it has a time-saving effect; furthermore, the present invention uses the transmission gear meshing moving member as the transmission, The adjustment process does not have the resistance of the conventional spring, and it also has a labor-saving effect.

3. The second rotation radius of the adjusting member of the present invention is large, and can be easily rotated by operation, so that the torque adjusting device has the effect of finely adjusting the torque.

4. The torque sensing device of the present invention adopts non-contact sensing, which can prevent the external environment from affecting the sensing effect, has a long service life, and realizes high-precision torque value setting and judgment.

5. The contact relationship between the supporting part and the elastic member of the present invention adopts rolling contact, the contact between the two will not produce abrasion, nor will it produce iron filings, and will not affect the performance of the torsion value, and has the effect of improving the service life.

6. The overall structure of the invention is simple, the assembly is fast, and the manufacturing cost is low.

The above-mentioned embodiments are only used to illustrate the present invention, and are not used to limit the scope of the present invention. All modifications or changes made without violating the spirit of the present invention belong to the scope of the patent application of the present invention.

100: Digital display torque wrench L1: axis L2: Centerline 10: body 11: first end 12: second end 121: Grip 13: accommodating space 131: Guiding Department 14: pivot hole 141: The first pivot hole 142: second pivot hole 143: Third Pivot Hole 15: pivot hole 16: Piercing 17: Mounting hole 18: wear slot 20: Flip pieces 20a: The first connection end 21: Connection part 22: Trigger 22a: The first connection end 23: fixed pin 231: first fixed pin 232: second fixing pin 233: third fixed pin 24: pivot hole 25: butt end 26: The first link 261: first pivot point 262: force segment 263: Resistance section 27: second link 271: second pivot point 272: force segment 273: Resistance section 28: second link 281: second pivot point 282: force segment 283: Resistance section 30: Tripping device 31: Jumper 31a: pivot hole 311: Connection groove 312: Reset bevel 32: positioning pin 33: Counting pieces 40: Torque adjustment device 41: Elastic parts 411: fixed end 412: free section 413: Abutment Segment 42: moving parts 42a: pivot hole 42b: pivot hole 421: first tooth 422: Support Department 422a: Support slot 423: mobile slot 424: Plane 43: transmission gear 431: second tooth 432: Hinge 433: Screw Hole 44: Adjusting parts 441: Outer Perimeter 442: fixing screw 443: perforation 45: fixed pin 46: fixed pin 50: Torque sensing device 51: Shell 52: circuit board 53: processing unit 54: Power 55: sensor 56: sensed part 57: display 58: Carrier 581: Pivot Hole 82: Plane R1: The first radius of rotation R2: second radius of rotation

[Fig. 1] is a schematic diagram of the appearance of the first embodiment of the digital display torque wrench that is easy to adjust the torque of the present invention. [Fig. 2] is an exploded view of the structure of the first embodiment of the digital display torque wrench which is easy to adjust the torque of the present invention. [Figure 3] is a schematic partial cross-sectional view taken along the section line 3-3 of Figure 1. [Fig. 4] is a perspective schematic diagram of the first embodiment of the digital display torque wrench with easy torque adjustment of the present invention, showing that the supporting portion is at the lower limit position, and the torque value of the digital display torque wrench is set to the minimum. [Fig. 5] is a continuation of Fig. 4, which is a schematic diagram of the turning action of the first embodiment of the digital display torque wrench that is easy to adjust the torque of the present invention. [Fig. 6] is a schematic side sectional view of the first embodiment of the digital display torque wrench that is easy to adjust the torque of the present invention. [Fig. 7] This is another perspective schematic diagram of the first embodiment of the digital display torque wrench that is easy to adjust the torque of the present invention. It shows that the supporting portion is at the upper limit position and the torque value of the digital display torque wrench is set to the maximum. [Fig. 8] is a continuation of Fig. 7, which is a schematic diagram of the turning action of the first embodiment of the digital display torque wrench that is easy to adjust the torque of the present invention. [Fig. 9] is an exploded view of the structure of the second embodiment of the digital display torque wrench which is easy to adjust the torque of the present invention. [Fig. 10] is a partial cross-sectional schematic diagram of the second embodiment of the digital display torque wrench that is easy to adjust the torque of the present invention. [Fig. 11] is a perspective view of the second embodiment of the digital display torque wrench with easy torque adjustment according to the present invention.

10: body

11: first end

12: second end

121: Grip

13: accommodating space

131: Guiding Department

14: pivot hole

15: pivot hole

16: Piercing

17: Mounting hole

20: Flip pieces

21: Connection part

22: Trigger

23: fixed pin

24: pivot hole

25: butt end

30: Tripping device

31: Jumper

31a: pivot hole

32: positioning pin

311: Connection groove

312: Reset bevel

40: Torque adjustment device

41: Elastic parts

411: fixed end

412: free section

413: Abutment Segment

42: moving parts

42a: pivot hole

421: first tooth

422: Support Department

422a: Support slot

423: mobile slot

424: Plane

43: transmission gear

431: second tooth

432: Hinge

433: Screw Hole

44: Adjusting parts

441: Outer Perimeter

442: fixing screw

443: perforation

45: fixed pin

50: Torque sensing device

51: Shell

52: circuit board

53: processing unit

54: Power

55: sensor

56: sensed part

57: display

Claims (14)

A digital display torque wrench that is easy to adjust the torque, which includes: A body having a first end and a second end away from the first end; A flipping piece, which is pivoted on the main body and capable of producing a relative pivoting relationship, the flipping piece has a flipping portion exposed outside the body and a connecting portion pivotally connected to the first end of the main body, the connection The part has an abutting end far away from the pulling part; A tripping device is arranged in the body and contacts the abutting end of the connecting part; A torque adjusting device is arranged on the body and connected to the tripping device. The torque adjusting device can be operated by the user to adjust a preset torque. The torque adjusting device includes an elastic member, a moving member, and a transmission gear And an adjusting member, the elastic member has a fixed end and a free section connected with the fixed end, the fixed end is fixed on the trip device, and the movable member is slidable along an axis of the main body. The main body, the moving part has a supporting part for the free section to bear when a force is applied, the moving part has a first tooth part arranged along a direction parallel to the axis, and the transmission gear has a second tooth part , The second tooth portion is meshed with the first tooth portion, the adjusting member is connected to the transmission gear, and the adjusting member can be rotated by the user so as to drive the moving member to have a linear sliding relationship with respect to the body and to easily adjust the bearing The position of the backrest relative to the free section; A torque sensing device is arranged at a position of the main body relative to the torque adjusting device. The torque sensing device can sense the displacement change of the moving part and display a torque value on a display. The digital display torque wrench that is easy to adjust the torque according to claim 1, wherein the adjusting member is rotatably arranged on the main body along a centerline direction, and the transmission gear rotates along a centerline arranged perpendicular to the axis direction, The centerline is orthogonal to the axis, and the second tooth portion is arranged around the centerline; the body has an accommodating space, and the accommodating space has a guiding portion in which the moving part is along the guiding portion The sliding is arranged on the main body. The digital display torque wrench that is easy to adjust the torque according to claim 2, wherein the transmission gear has a first rotation radius, the second tooth portion is arranged along the first rotation radius; the adjustment member has a second rotation Radius, the second radius of rotation is greater than the first radius of rotation, and the transmission gear and the adjusting member are coaxially arranged. The digital display torque wrench that is easy to adjust the torque according to claim 3, wherein the adjustment 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 The adjusting member can be rotated by the user to drive the moving member to adjust the position of the supporting 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 the triggering member The power to return to its original state. The digital display torque wrench that is easy to adjust the torque according to claim 4, wherein the supporting portion is rotatably arranged on the movable member, and the supporting portion and the free end of the elastic member are in rolling contact , The moving part is a frame, and the elastic part penetrates the moving part. When the digital display torque wrench is turned and applied, the elastic part can be bent and deformed in the moving part; the moving part has a moving groove , 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 an abutting section with a semicircular cross-section, the bearing portion has a supporting groove, and the supporting groove is a semicircular concave The shape is matched with the abutting section. The digital display torque wrench that is easy to adjust the torque according to any one of claims 1 to 5, wherein the torque sensing device has a sensing element and a sensed element, and the display is electrically connected to the sensing element. The sensing element is set on the moving element and moves with it. The sensing element can non-contactly sense the displacement change of the sensed element to generate a torsion signal. The display displays the torsion signal according to the torsion signal. Torque value. The digital display torque wrench with easy adjustment of torque according to claim 6, wherein the torque sensing device includes a housing, a circuit board, a processing unit and a power supply, and the display is arranged on the surface of the housing and is connected to the processing unit Electrically connected, the circuit board is arranged between the housing and the body, the sensing element and the processing unit are arranged on the circuit board, the power supply is used for powering the torque sensing device; the body has an accommodating space and A through hole penetrates the accommodating space, and the sensing element senses the sensed element through the through hole. The digital display torque wrench that is easy to adjust the torque according to claim 7, wherein the torque sensing device further includes a bearing body, one end of which is connected to the moving part, and the sensed part is arranged on the surface of the bearing body The body further includes a holding member, which is sleeved on the second end of the body; the distance from the adjusting member to the holding member is greater than the distance from the display to the holding member. The digital display torque wrench capable of adjusting the torque as described in claim 8, wherein the adjusting member is provided with an outer periphery along the second radius of rotation, and at least a part of the outer periphery is exposed from the body. The digital display torque wrench capable of adjusting the torque as described in claim 8, wherein the body is hollow, the pulling member extends into the first end and is pivotally connected to the body, and the tripping device includes a tripping member And a positioning pin, the tripping piece is pivotally connected to the main body by the positioning pin, the tripping piece is fixed by the fixed end of the elastic piece, and the tripping piece can be tripped and connected to the abutment of the triggering piece When the power of the digital display torque wrench is greater than the torque value of the torque adjustment device, the jumper can jump off the abutting end, the jumper can pivot relative to the body, and when the The digital display shows that when the pulling force of the torque wrench is smaller than the torque value of the torque adjusting device, the jumper and the abutting end can automatically return to the original abutting state. The digital display torque wrench that is easy to adjust the torque according to claim 10, wherein the side of the jumper opposite to the abutting end has a connecting groove, and one side of the connecting groove is connected with a reset slope, the The abutting end is a round pin that is disconnected between the connecting groove and the reset slope. When the force of the torque wrench is greater than the torque value of the torque adjusting device, the abutting end is in the resetting position. The inclined surface, when the force of the torque wrench pulled by the digital display is less than the torque value of the torque adjusting device, the reset inclined surface automatically guides the jumper to restore the connecting groove to the abutting state of the abutting end. The digital display torque wrench with easy torque adjustment according to claim 10, wherein the tripping device further includes a counting element, the counting element is arranged between the main body and the connecting portion and is electrically connected to the processing unit, The counting piece can send a counting signal and display it on the display according to the number of trips of the tripping piece. The digital display torque wrench capable of adjusting the torque as described in claim 10, wherein the pulling part is detachably provided on the pulling piece, and the pulling piece is different from the connecting part with a first connecting end, One end of the flip part has a second engagement end, and the second engagement end is connected to the first engagement end in a concave-convex manner. The digital display torque wrench that is easy to adjust the torque according to claim 10, wherein the pulling member has a multi-link structure, and the pulling 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 pivoted to the body respectively, the connecting part is arranged on the third connecting rod, the pulling part is arranged on the first connecting rod, the first connecting rod Two connecting rods are connected between the first connecting rod and the third connecting rod, the first connecting rod has a first pivot point pivoted to the body, and the second connecting rod has a second pivot point pivoting Located on the body, the third link has a third pivot point pivoted to the body, and the first link, the second link and the third link are respectively connected to the first pivot point, The second pivot point and the third pivot point are provided with a force applying section and a force resisting section, and the length of each force applying section is smaller than the length of each resisting force section.

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