Digital display torque wrench that adjusts torque mechanically

Abstract

To provide a digital display torque wrench that adjusts torque mechanically. [Solution] A digital display torque wrench 100 for adjusting torque mechanically has a main body 1, a rotating device 2, a torque interrupt device 3, a specially shaped elastic member 4, a torque adjusting device 5, a locking device 6 and a torque sensing device 7. A sliding member 50 of the torque adjusting device 5 slides parallel to the axial direction of the main body 1 to adjust the torque setting value of the wrench. The locking device 6 is attached between the sliding member 50 and the main body 1. The locking device 6 can be converted between a release position and a lock position. In the release position, the axial position of the support part 501 of the sliding member 50 relative to the specially shaped elastic member 4 can be easily adjusted. The torque sensing device 7 senses the change in position of the sliding member 50 to display the torque setting value. In the locked position, the locking device 6 applies a force to the sliding member 50 to increase the frictional resistance force between the sliding member 50 and the main body 1.

Description

[Technical Field]

[0001] The present invention relates to a torque wrench, and more particularly to a digital torque wrench that adjusts torque mechanically. [Background technology]

[0002] "Torque wrench" in Patent Document 1 refers to a torque wrench. The torque wrench digitally displays the torque setting value and includes a main body, a drive unit, a release mechanism, a torque member, and an adjustment member. The torque member includes a biasing member and an upper pressing member. The adjustment member includes a position limiting member, an adjustment member, and a slide component. The position limiting member contacts the biasing member, and the sliding component and the position limiting member are fixedly connected and slidably mounted within the body. The adjustment member adjusts the slide component to adjust the relative position at which the position limiting member presses against the biasing member. When the torque received by the driver is greater than the torque setting of the torque wrench, the release mechanism and upper hold-down member release, thereby indicating to the user that the torque setting of the fastener has reached a predetermined value.

[0003] However, when the torque received by the drive unit does not reach the predetermined torque value of the torque wrench during the rotational movement of the torque wrench, a reaction force is transmitted from the drive unit to the biasing member, causing the biasing member to bend. At the same time, the reaction force also acts on the slide member via the biasing member and the position limiting member, causing the slide member to move slightly and loosen the structure. This leads to inaccuracies and distortions in torque performance during the course of using the torque wrench.

[0004] The "Torque tool with trigger mechanism" of Patent Document 2 is a different type of torque tool that includes a lever shell, a lever device, a trigger mechanism, a torque adjustment device, etc. The lever device is disposed within the lever housing and has two levers. The two levers exit and connect via a switch edge. When the torque experienced by the head is greater than the torque setting of the torque tool, the two levers will release, thereby indicating to the user that the torque setting of the fastener has been reached.

[0005] Similar to the drawbacks of the aforementioned patent, if the torque received by the head during the rotation of the torque tool does not reach a predetermined torque value, the reaction force from the head is transmitted to the bendable rod, causing it to become flexible. At the same time, the reaction force is also transmitted through the bendable rod to the support member that is installed to slide on the directional guide member, causing the support member to move slightly relative to the directional guide member, resulting in loosening of the structure. Thus, in the course of using the torque tool, the torque performance will be similarly inaccurate and distorted. To meet consumer needs, the present invention provides a digital torque wrench that adjusts torque mechanically and has high accuracy and no torque distortion. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] U.S. Patent Publication No. 2020 / 0398410A1 [Patent Document 2] German Utility Model Registration No. 202013101035U1 Summary of the Invention [Problem to be solved by the invention]

[0007] The prior art has the drawback that the torque performance is inaccurate and distorted during use. [Means for solving the problem]

[0008] In order to solve the above problems, the present invention relates to a digital torque wrench that adjusts torque mechanically, which can achieve a torque that is reached and distortion-free during the process of applying force, while further tightening the structure when locking the main body and the sliding member with a locking device.

[0009] The digital display torque wrench for adjusting torque mechanically according to the present invention comprises a body, a rotary device, a torque interrupting device, a specially shaped elastic member, a torque adjusting device, a locking device and a torque sensing device. the body defines a first end and a second end axially spaced from the first end; The rotary device is swingably mounted on a first end of the body, and the rotary device has a body and a rotary end exposed from the body; the torque interruption device is pivotally mounted within the body and selectively connected to an end of the rotary device remote from the rotary end; The specially shaped elastic member has a fixed end and a specially shaped support section different from the fixed end, and the fixed end of the specially shaped elastic member is fixedly mounted on the torque interruption device; the torque adjustment device is attached to the main body, the torque adjustment device has a slide member, the slide member is installed so as to slide within the main body along a direction parallel to the axis, the slide member has a support portion, and the support portion is used for contacting with the specially shaped support section of the specially shaped elastic member; The locking device is attached between the slide member and the main body, and the locking device can be converted between a release position and a locking position. In the release position, the axial position of the support part of the slide member relative to the specially shaped elastic part can be easily adjusted. In the locking position, the locking device applies frictional resistance between the slide member and the main body, so that the slide member cannot move relative to the main body. The torque sensing device is installed on the main body at a position opposite to the torque adjusting device, and the torque sensing device can sense a change in the position of the slide member and indicate the torque setting value.

[0010] Furthermore, the rotating end has a rotating shaft, and during a rotating operation, the main body rotates around the rotating shaft; In the release position, a user can adjust the position of the slide member on the axis by rotating the slide member along an operating axis that is parallel to and perpendicular to the rotation axis; The locking device has a connecting relationship with the torque adjusting device along the operating shaft, and in the locked position, the locking device applies the frictional resistance force to the slide member along the direction of the operating shaft, thereby tightly sandwiching the slide member and the main body.

[0011] The torque adjusting device further includes a first force transmitting member that is coupled to the slide member and causes the slide member to move, The locking device includes a shaft that passes through the hole in the main body and the slide member along an operating axis, an operating handle that is swingably mounted on one end of the shaft, and a second force transmission member that is mounted on the shaft; The operating handle is coupled to the shaft to cause a movement along the direction of the operating axis; the first force transmission member and the second force transmission member are mounted on the shaft; In the locked position, the operating handle can pull the shaft along the operating axis, thereby driving the first force transmission member and the second force transmission member to press against each other, tightly sandwiching the main body and the slide member; In the release position, the operating handle is loose relative to the shaft, allowing a user to pivot the first force transmission member, thereby interlocking the sliding member to perform a linear sliding movement relative to the main body.

[0012] Furthermore, the rotary drive device has an adjusting device, which can adjust the degree of connection between the rotary drive device and the torque interrupting device.

[0013] Furthermore, the main body has an upper side and a bottom side disposed opposite to the operating shaft, and the shaft is exposed from the upper side to the main body, thereby allowing the operating handle to be pivoted; The first force transmission member has a first connecting end and a first contact pressure part, and the second force transmission member has a second connecting end and a second contact pressure part disposed within the sliding member; The second connecting end is simultaneously connected to the second connecting end, and in the locking position, the first contact pressure portion presses the main body and the second contact pressure portion presses the sliding member.

[0014] Furthermore, the first force transmission member has a force receiving portion located away from the first contact pressure portion, and the operating handle has an eccentric cam, the locking device has a force transmitting component, which is connected and disposed between the eccentric cam and the force receiving part, and when in the locked position, the eccentric cam applies a force to the force transmitting component, whereby the force transmitting component transmits the force to the first force transmitting member; The slide member has a first gear portion arranged parallel to the axial direction, and the second force transmission member has a second gear portion between the second connecting end and the second contact pressure portion, the second gear portion surrounding the operating shaft, and the second gear portion and the first gear portion mesh with each other; the first force transmission member is mounted on the main body and the shaft so as to rotate along the operating axis and engages the second force transmission member, so that a user can rotate the first force transmission member to engage the second force transmission member, which then engages the sliding member and moves relative to the main body; the first force transmission member is separated from the first connecting end and has a pivot end, the pivot end having a first pivot radius; The second force transmission member has a second turning radius, the second gear part is installed along the second turning radius, the first turning radius is larger than the second turning radius, and the first connecting end and the second connecting end are connected by fitting together in a concave-convex manner.

[0015] The device further includes a biasing device disposed between the main body and the slide member, which applies a resilient force to the slide member along a direction perpendicular to the axis and the operating axis, the biasing device having a resilient piece, and a hook fixing portion at each end of the resilient piece, which is hooked onto the side of the slide member.

[0016] The rotary device further includes a rotary member and a pressing member. The rotating member is pivotally mounted to the first end, the rotating member having a distal end that extends into the body; The pressing member is pivotally mounted on the distal end, the torque interruption device is selectively connected to the pressing member, the specially shaped support section has a curved contact area that the support part contacts, and the specially shaped elastic member is installed within the body at an angle relative to the axis of the body; When the support part of the torque adjusting device abuts against the curved contact area of ​​the special-shaped elastic member at a position away from the fixed end, the torque setting value is minimized; When the support part of the torque adjusting device abuts against the curved contact area of ​​the special-shaped elastic member and is close to the fixed end, the torque setting value is maximum; When the force applied by the rotation of the digital display torque wrench increases and becomes equal to the torque setting value, the torque interruption device causes the pressing member to release and interrupts the application of force to the digital display torque wrench; When the digital display torque wrench returns to its natural state, the torque interruption device and the pressing member automatically return to their original connection state; the axis divides the body into an antegrade side and a retrograde side, an axial center line of the specially shaped elastic member and the axis have an inclination angle, the fixed end of the specially shaped elastic member is located on the retrograde side of the body, and the specially shaped support section of the specially shaped elastic member is located beyond the axis of the body on the antegrade side of the body; The torque interruption device has a blocking member, and the pressing member is connected to the blocking member in abutment therewith; When the force applied by the rotation of the digital display torque wrench increases and becomes equal to the torque setting value, the interrupting member is released from the pressing member, and the application of force to the digital display torque wrench is interrupted. When the digital torque wrench returns to its natural state, the disconnecting member and the pressing member automatically return to their original connected state. a first limiting portion is provided at one end of the end, and the pressing member has a second limiting portion provided opposite thereto, the first limiting portion and the second limiting portion being connectable with each other to limit the swing width of the pressing member; a reset member between the distal end and the pressing member, the reset member maintaining the pressing member and the torque interruption device in a normally connected state; an elastic member is provided between the rotating member and the main body, and the elastic member provides a force for the rotating member to return to its natural state; The adjusting device is installed between the end and the pressing member, and the adjusting device has an adjusting member and a nut threaded onto one end of the adjusting member, and the other end of the adjusting member is threaded onto the end and connected to the pressing member; The pressing member has a first connecting portion, the blocking member has a second connecting portion on a side opposite to the specially shaped elastic member, and is connected to the first connecting portion by this second connecting portion; The adjustment member can adjust the pivot angle of the pressing member relative to the distal end, thereby changing the area where the first connecting portion contacts the second connecting portion.

[0017] Furthermore, the main body has an upper side and a bottom side disposed opposite to the operating shaft, and the shaft is exposed from the bottom side to the main body, thereby allowing the operating handle to be pivoted; The first force transmission member has a first connecting end and a first contact pressure part, and the second force transmission member has a second connecting end and a second contact pressure part disposed within the sliding member; The second connecting end is slidably mounted on the first connecting end, and in the locking position, the first contact pressure portion presses the main body, and the second contact pressure portion presses the sliding member.

[0018] Furthermore, the slide member has a first gear portion arranged parallel to the axial direction, the first force transmission member has a second gear portion arranged away from the first contact pressure portion and surrounding the operating shaft, the second gear portion and the first gear portion mesh with each other, the first force transmission member is mounted on the shaft so as to rotate along the operating axis, whereby a user rotates the first force transmission member to move the slide member relative to the main body; the first force transmission member is separated from the first connecting end and has a pivot end, the pivot end having a first pivot radius; the second gear portion is mounted along a second pivot radius, the first pivot radius being greater than the second pivot radius; the operating handle has an eccentric cam, and when the operating handle is in the locked position, the eccentric cam applies a force to the second force transmission member, thereby driving the second force transmission member and the first force transmission member to press against each other, and tightly sandwiching the main body and the slide member; The shaft of the locking device has a screw thread portion and is drilled into the first force transmission member, whereby the first screw member and the second screw member are screwed onto the screw thread portion, and a disc spring is provided between the first screw member and the first force transmission member.

[0019] The device further includes a biasing device disposed between the main body and the slide member, for applying a resilient force to the slide member along a direction perpendicular to the axis and the operating axis; The biasing device has a resilient piece, and both ends of the resilient piece have hook fixing portions, which are hooked onto the sides of the slide member.

[0020] Further, the shaft divides the body into an antegrade side and a retrograde side, the body having an inner wall, the inner wall having a first inner wall on the retrograde side and a second inner wall on the antegrade side; The rotary motion device includes a rotary motion member, a connecting rod, and an actuating member; The rotary member is pivotally mounted on the first end, and a distal end is provided on the rotary member; The connecting rod is pivotally mounted at the end, the actuating member is pivotally mounted to the body and is movable relative to the body between a first swing position and a second swing position, whereby the actuating member is in a linked relationship with the connecting rod; When the actuating member is in the first swing position, the actuating member transmits the reaction force of the rotary actuator to the specially shaped elastic member; When the torque interruption device is disconnected, the force transmission of the digital display torque wrench is interrupted, so that when the operating member swings to the second swing position, the operating member moves relative to the connecting rod and the main body, causing the rotating member to collide with the first inner wall, and the operating member collide with the second inner wall; a first impact surface on an end side of the rotary member, and a first impact space between the first impact surface and the first inner wall; a second impact surface on one side of the actuating member, and a second impact space between the second impact surface and the second inner wall; When the torque interruption device interrupts the application of force to the digital display torque wrench, the first impact surface enters the first impact space and collides with the first inner wall, and the second impact surface enters the second impact space and collides with the second inner wall; When the digital display torque wrench is in its natural state, the axis of the connecting rod and the shaft form a first included angle, and the second impact surface and the shaft form an impact included angle. The connecting rod has a first connecting end and a second connecting end disposed opposite to the first connecting end, the first connecting end is pivoted to the end, and the second connecting end and the operating member have an interlocking relationship. The second connecting end of the connecting rod is located on the reverse side; When the torque interruption device interrupts the application of force from the digital display torque wrench, the axis of the connecting rod and the axis form a second included angle, the first included angle is greater than the second included angle, the first included angle is greater than the impact included angle, and the first connecting end of the connecting rod exceeds the axis of the main body and is located on the reverse side of the main body together with the second connecting end; The torque interruption device has a blocking member, and the rotary movement device has a pressing member pivotally disposed on the opposite side of the rotary movement end, one side of the pressing member being in operative contact with the operating member, and the other side being abuttingly connected to the blocking member; When the force applied by the rotation of the digital display torque wrench increases and becomes equal to the torque setting value, the interrupting member is released from the pressing member, and the application of force to the digital display torque wrench is interrupted. When the digital torque wrench returns to its natural state, the disconnecting member and the pressing member automatically return to their original connected state. The adjusting device is installed between the operating member and the pressing member, and the adjusting device has an adjusting member and a nut screwed onto one end of the adjusting member, and the opposite end of the adjusting member is screwed onto the pressing member and connected to the operating member, the pressing member has a first connecting portion, and the blocking member has a second connecting portion on a side opposite to the special-shaped elastic member for connecting with the first connecting portion, the adjustment member can adjust a pivot angle of the pressing member relative to the actuation member, thereby changing an area where the first connecting portion comes into contact with the second connecting portion; The axis of the special-shaped elastic member and the axis have an inclination angle, and the fixed end of the special-shaped elastic member is located on the reverse side of the main body; a support section of the specially shaped elastic member located beyond the axis of the body on the antegrade side of the body; the torque adjustment device is operable by a user to adjust the axial position of the support portion relative to the specially shaped support section, thereby changing the inclination angle of the specially shaped elastic member relative to the main body; The axis of the specially shaped elastic member relative to the body is inclined and is disposed within the body, and the specially shaped support section of the specially shaped elastic member has a curved contact area; The rotary actuator further comprises two clamping plates, the second connecting end of the connecting rod is pivoted on one side of the two clamping plates, the pressing member is pivoted on the other side of the two clamping plates, and the actuating member is two pieces, and is stacked on the two clamping plates and fixedly connected together; The actuating member has a first limiting portion disposed away from the rotation end, and the pressing member has a second limiting portion disposed opposite thereto, the first limiting portion and the second limiting portion being connectable with each other to limit the swing width of the pressing member; A reset member is provided between the operating member and the pressing member, and the reset member keeps the pressing member and the blocking member in a normally connected state. An elastic member is provided between the rotating member and the first inner wall of the main body, and the elastic member provides a force for the rotating member to return to its natural state.

[0021] The torque sensing device further includes a sensing member and a monitor; the monitor is electrically connected to the sensing member, the sensing member having a movable portion, the movable portion being connected to the sliding member and moving accordingly, whereby the sensing member senses a change in displacement of the sliding member and generates a torque signal; the monitor displays the torque setting value based on the torque signal; The main body has an accommodation space, and a sensing hole is provided at the first end of the main body, facing the second end and communicating with the accommodation space, and the sensing member senses a position change of the sliding member through the sensing hole; The torque sensing device further includes a counter, and the counter transmits a count signal according to the number of times the blocking member and the pressing member escape, and can display the count signal on the monitor. The rotary device has a drive head and a rotary member, the rotary member is pivotally mounted on the first end and the rotary end is mounted on the drive head, the drive head is removably mounted on the rotary member, and the main body further has a grip member mounted on the second end.

[0022] As a result, when the locking device of the present invention is in the locked position, the frictional resistance between the main body and the sliding member is increased, making the structure tighter and eliminating micro-movements when applying force to the wrench, resulting in more accurate torque performance of the wrench and no torque distortion.

[0023] The present invention also provides a mechanical torque wrench quick release function, allowing for quick adjustment of torque settings, while also providing an electronic torque wrench digital display function. [Brief explanation of the drawings]

[0024] [Figure 1] 1 is a schematic view showing the appearance of a first embodiment of a digital display torque wrench according to the present invention; [Figure 2] 1 is a structural exploded schematic diagram of a first embodiment of a digital display torque wrench according to the present invention; FIG. [Figure 3] 2 is a schematic vertical cross-sectional view of a portion of FIG. 1, showing the locking device in a locked position. [Figure 4] 2 is a schematic cross-sectional view of a portion of FIG. 1, showing the support portion in a lower limit position and the torque setting value set to a minimum. [Figure 5] 1 is a schematic diagram of the rotational operation of the first embodiment of the digital display torque wrench according to the present invention, showing that the wrench is in the released state. FIG. [Figure 6] FIG. 1 is a partial vertical cross-sectional view of a digital torque wrench according to the present invention, showing that the locking device is in the release position, and the first force transmitting member can drive the linear displacement of the sliding member to adjust the support part to the upper limit position. [Figure 7] 1 is a partial cross-sectional view of a digital torque wrench according to the present invention, showing that the support is in the upper limit position and the torque setting value is set to the maximum. [Figure 8] FIG. 10 is a structural exploded schematic view of a second embodiment of the digital display torque wrench according to the present invention. [Figure 9] FIG. 9 is a schematic local vertical cross-sectional view of FIG. 8, showing the locking device in the locked position. [Figure 10a] 9 is a schematic cross-sectional view of a portion of FIG. 8, showing the support portion in a lower limit position and the torque setting value set to a minimum. [Figure 10b] FIG. 10b is a schematic enlarged view of a local portion of FIG. 10a. [Figure 11a]10 is a schematic diagram of the rotational operation of the second embodiment of the digital display torque wrench according to the present invention, showing that the wrench is in the released state. [Figure 11b] FIG. 11b is a schematic enlarged view of a local area of ​​FIG. 11a. [Figure 12] FIG. 1 is a partial vertical cross-sectional view of a digital torque wrench according to the present invention, showing that the locking device is in the release position, and the first force transmitting member can drive the linear displacement of the sliding member to adjust the support part to the upper limit position. [Figure 13] 1 is a partial cross-sectional view of a digital torque wrench according to the present invention, showing that the support is in the upper limit position and the torque setting value is set to the maximum. [Figure 14] 1 is a curve diagram of the force applied by a user to a digital display torque wrench according to the present invention versus time. DETAILED DESCRIPTION OF THE INVENTION

[0025] (One embodiment) The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, but obviously, the described embodiments are only some of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments made by ordinary technical personnel in this field without creative efforts shall all fall within the protection scope of the present invention.

[0026] As shown in FIGS. 1 to 7, a first embodiment of a digital torque wrench 100 for mechanically adjusting torque according to the present invention includes a main body 1, a rotary device 2, a torque interrupting device 3, a specially shaped elastic member 4, a torque adjusting device 5, a locking device 6, and a torque sensing device 7.

[0027] The body 1 defines a first end 10 and a second end 11 spaced from the first end 10 along an axis L1 that divides the body 1 into an antegrade side LF and a retrograde side LR. The main body 1 has an accommodation installation space 12 . In this embodiment of the present invention, the main body 1 has a flat rectangular hollow tube shape, and has a guide portion 121 in the receiving and installation space 12 . The main body 1 is provided with a pivot hole 13, a sensing hole 14, and a perforation 15 in this order from the first end 10 to the second end 11, and the pivot hole 13, the sensing hole 14, and the perforation 15 are each connected to the accommodation installation space 12, and the sensing hole 14 is an elongated hole. The accommodation installation space 12 has an inner wall 122, and the inner wall 122 has a first inner wall 122a on the retrograde side LR and a second inner wall 122b on the antegrade side LF.

[0028] The rotary device 2 is swingably installed at the first end 10 of the main body 1, and the rotary device 2 has a rotary end 2a exposed from the main body 1. The rotary end 2a has a rotary axis L2, and when the digital display torque wrench 100 is rotated, the main body 1 rotates around the rotary axis L2, thereby rotating the fastener. The rotation axis L2 is perpendicular to the axis L1. In this embodiment of the present invention, the rotary device 2 includes a rotary member 20 , a drive head 21 , and a pressing member 22 . The rotary end 2a is mounted on one end of a drive head 21, and the opposite end of the drive head 21 is detachably mounted on the rotary member 20. As shown in FIG. 2, the rotary member 20 has an engagement groove 201 , and the drive head 21 has an engagement block 211 . Through the concave-convex correspondence between the engaging groove 201 and the engaging block 211, users can select a specific drive head 21 to be assembled into the rotating member 20 according to different working needs.

[0029] The rotary member 20 is pivotally mounted on the first end 10 of the body 1 and has a relative pivotal relationship. The rotary member 20 has a connecting portion 202 at a position separated from the engagement groove 201 . The rotating member 20 is inserted through a fixed pin 23 into the pivot hole 13 of the main body 1 and the pivot hole 203 of the rotating member 20 , so that the rotating member 20 is pivoted to the first end 10 of the main body 1 . The connecting portion 202 has an end 204 opposite to the rotational end 2 a and extends into the body 1 , and a first limiting portion 205 is provided on one side of the end 204 . An elastic member 206 is installed between the connecting portion 202 and the first inner wall 122a of the main body 1. One end of the elastic member 206 abuts against the first inner wall 122a, and the other end abuts against the hole 207 on the side of the rotation member 20, providing a force that causes the rotation member 20 to return to its natural state.

[0030] The pressing member 22 is pivotally arranged at the end opposite to the rotating end 2a of the rotating member 2, and in this embodiment of the present invention, the pressing member 22 has a bore 221 and is pivotally mounted in the bore 208 of the end 204 through a fixing pin 222. The pressing member 22 has a second restricting portion 223 on one side of the end 204 and a first connecting portion 224 on the other side. The first limiting portion 205 and the second limiting portion 223 can be connected to each other, thereby limiting the swing range of the pressing member 22 .

[0031] The torque interruption device 3 is pivotally installed in the installation space 12 in the main body 1, and is selectively connected to one end of the rotary device 2 that is remote from the rotary end 2a. That is, the torque interruption device 3 is connected to the rotary motion device 2 . In this embodiment of the present invention, the torque interruption device 3 is selectively connected to the pressing member 22 of the rotary motion device 2 . The torque interruption device 3 has a blocking member 31 . The blocking member 31 is inserted into the hole 311 via a fixed pin 32 and pivoted to the main body 1, whereby the blocking member 31 is abutted against and connected to the pressing member 22, and the blocking member 31 can swing between a first position and a second position relative to the main body 1.

[0032] When the force applied by the rotation of the digital display torque wrench 100 increases and becomes equal to the torque setting value, the blocking member 31 is released from the pressing member 22, and the application of force to the digital display torque wrench 100 is stopped (see FIG. 4). When the digital display torque wrench 100 returns to its natural state, the disconnecting member 31 and the pressing member 22 automatically return to their original connected state (see FIG. 5). In this embodiment of the present invention, the blocking member 31 has a second connecting portion 312 for connecting with the first connecting portion 224 of the pressing member 22 on the side opposite to the specially shaped elastic member 4 . The rotary actuator 2 further includes a reset member 25, which is disposed between the hole 209 of the end 204 and the pressing member 22, and the reset member 25 is a spring, which keeps the pressing member 22 and the torque interruption device 3 in a normally connected state.

[0033] The specially shaped elastic member 4 is disposed in the main body 1 at an inclination relative to the axis L1 of the main body 1. The axis 40 of the special-shaped elastic member 4 and the axis L1 have an inclination angle A, and one end of the special-shaped elastic member 4 is fixed to the interrupting member 31 of the torque interrupting device 3. In this embodiment of the present invention, the specially shaped elastic member 4 is a long rod-shaped member having a body section 41 along an axis 40 . The body section 41 has a fixed end 42 at one end thereof, and a specially shaped support section 43 at the other end thereof different from the fixed end 42 . The specially shaped support section 43 has a curved contact area 431 . The fixed end 42 is located on the forward side LF of the main body 1 and is connected and fixed to the blocking member 31 of the torque interruption device 3 on a side different from the pressing member 22, and the specially shaped support section 43 of the specially shaped elastic member 4 exceeds the axis L1 of the main body 1.

[0034] The torque adjusting device 5 is attached to the main body 1 . The torque adjusting device 5 has a slide member 50, and is installed so as to slide in a guide portion 121 in the main body 1 in parallel to the direction of the axis L1. The slide member 50 has a frame, and a support part 501 is installed inside the frame so as to be able to rotate. The support part 501 is a roller, and the specially shaped support section 43 of the specially shaped elastic member 4 abuts against it, and the curved contact area 431 and the support part 501 have a rolling contact relationship. In this embodiment of the present invention, the support part 501 is pivotally mounted on the slide member 50 through a fixing pin 502 . Moreover, when the support portion 501 of the adjustable slide member 50 is positioned relative to the axial position of the specially shaped support section 43, the contact area between the first connecting portion 224 and the second connecting portion 312 can be changed.

[0035] An adjusting tank 503 is installed on the slide member 50. A first gear part 504 is installed on one side of the inner edge of the adjusting tank 503 . The first gear portion 504 is disposed in a direction parallel to the axis L1 and is linear. The specially shaped support section 43 of the specially shaped elastic member 4 is drilled into the slide member 50, so that the support portion 501 and the specially shaped support section 43 come into contact with each other. As a result, when the slide member 50 moves, the movement of the support portion 501 is linked, and the support position of the support portion 501 relative to the specially shaped support section 43 of the specially shaped elastic member 4 is changed.

[0036] When the support part 501 of the torque adjusting device 5 contacts the curved contact area 431 of the special-shaped elastic member 4 at a position away from the fixed end 42, the torque setting value becomes minimum (FIG. 4). When the support part 501 of the torque adjusting device 5 abuts against the curved contact area 431 of the special-shaped elastic member 4 and is close to the position of the fixed end 42, the torque setting value is maximum (FIG. 7). The torque adjusting device 5 can be operated by the user, making it easy to adjust the axial position of the support portion 501 relative to the specially shaped support section 43, thereby changing the inclination angle A of the specially shaped elastic member 4 relative to the main body 1. Therefore, when the torque setting value is minimum, the inclination angle A of the specially shaped elastic member 4 is minimum, and the inclination angle of the blocking member 31 relative to the main body 1 is also small. Accordingly, the contact area between the first connecting portion 224 of the pressing member 22 and the second connecting portion 312 of the blocking member 31 also becomes smaller. When the torque setting value is maximum, the inclination angle A of the specially shaped elastic member 4 is maximum, and the inclination angle of the blocking member 31 relative to the main body 1 is also large, and accordingly, the contact area between the first connecting portion 224 of the pressing member 22 and the second connecting portion 312 of the blocking member 31 also becomes large. In this way, the blocking member 31 has the ability to increase the force with which it engages the pressing member 22, meaning that a greater rotational dynamic torque is required to release the two. Therefore, the effect of increasing the torque setting value of the digital display torque wrench 100 is increased, the upper limit of the torque setting value is widened, and a wider setting range of the torque setting value is obtained.

[0037] The locking device 6 is attached between the slide member 50 and the main body 1, and the locking device 6 can be converted between a release position and a lock position. At the release position, the axial position of the support portion 501 of the slide member 50 relative to the specially shaped elastic portion 4 can be easily adjusted, thereby allowing the torque of the digital display torque wrench 100 to be adjusted. In the locked position, the locking device 6 applies frictional resistance between the slide member 50 and the body 1 , so that the slide member 50 cannot move relative to the body 1 . In this embodiment of the present invention, in the release position, the user can adjust the position of the slide member 50 on axis L1 by rotating it along an operating axis L3 that is parallel to the rotation axis L2 and perpendicular to axis L1. The locking device 6 is connected to the torque adjusting device 5 along the operating axis L3, and in the locked position, the locking device 6 applies frictional resistance to the slide member 50 along the direction of the operating axis L3, so that the locking device 6 sandwiches the slide member 50 and the main body 1, thereby forming a stable locked state between the main body 1 and the slide member 50 (see Figure 3). As a result, the slide member 50 cannot move relative to the main body 1. Since the locking device 6 is connected to the torque adjusting device 5, they are constructed together, thus making the overall structural arrangement of the present invention more compact.

[0038] In this embodiment of the present invention, the main body 1 has an upper side 1a and a bottom side 1b opposite to the upper side 1a along the direction of the operating axis L3. The torque adjusting device 5 further includes a first force transmitting member 51 that cooperates with the slide member 50 to cause the slide member 50 to move. The first force transmitting member 51 has at one end thereof a first connecting end 511 , a first contact pressing portion 512 and a pivoting end 513 spaced apart from the first connecting end 511 . The pivot end 513 is disk-shaped and has a first pivot radius R1. The first force transmitting member 51 has a force receiving portion 514 away from the first contact pressing portion 512 .

[0039] The locking device 6 has a shaft 60 that passes through the bore 15 of the main body 1 and the slide member 50 along the operating axis L3, an operating handle 61 that is installed so as to be able to swing on one end of the shaft 60, and a second force transmission member 62 that is screwed onto the shaft. The shaft 60 has a pivot hole 601 at one end, which is exposed to the main body 1 from the upper side 1a. The operating handle 61 has an eccentric cam 611 , and is pivotally mounted on the pivot hole 601 of the shaft 60 through a pivot member 612 . This allows the operating handle 61 to be operated by a user to selectively rotate relative to the shaft 60, and the operating handle 61 can drive the shaft 60 to cause movement along the direction of the operating axis L3. The first force transmission member 51 and the second force transmission member 62 are both mounted on the shaft 60, and the first force transmission member 51 is mounted on the main body 1 and the shaft 60 so as to rotate along the operating axis L3, and is linked to the second force transmission member 62. In the locked position, the operating handle 61 pulls the shaft 60 along the operating axis L3, thereby driving the first force transmission member 51 and the second force transmission member 62 to press against each other, tightly clamping the main body 1 and the component 50 (see Figure 3). In the release position, the operating handle 61 is relaxed relative to the shaft 60, and the user can operate the first force transmission member 51 to linearly slide the slide member 50 relative to the main body 1 (see FIG. 6).

[0040] In the first embodiment, the operating handle 61 is located on the upper side 1a of the main body 1, so that when a user operates the locking device 6, the user can operate it from the upper side 1a of the digital display torque wrench 100. The second force transmission member 62 has a second connecting end 621 and a second contact pressure part 622 installed in the sliding member 50, the second connecting end 621 is simultaneously connected to the first connecting end 511, in the locked position, the first contact pressure part 512 presses the main body 1, and the second contact pressure part 622 presses the sliding member 50, and the two are tightly locked. The first connecting end 511 and the second connecting end 621 do not rotate relative to each other, but are connected by fitting together using a concave-convex manner. This allows the locking device 6 body 1 and the sliding member 50 to be fixedly coupled, making the structure more compact, so that the wrench will not move slightly when applying force, making the torque performance more accurate and preventing torque distortion.

[0041] The second force transmission member 62 has a second gear portion 623 disposed between the second connecting end 621 and the second contact pressure portion 622, surrounding the operating axis L3, and the second gear portion 623 meshes with the first gear portion 504 of the slide member 50. The second force transmission member 62 has a second turning radius R2, the second gear portion 623 is disposed along the second turning radius R2, and the first turning radius R1 is greater than the second turning radius R2. This allows the user to rotate the first force transmission member 51 with a relatively small force to engage the second force transmission member 62, which then engages the slide member 50 and moves it relative to the main body 1, thereby achieving the effect of quickly adjusting the torque setting value to the upper or lower limit.

[0042] In this embodiment of the present invention, the locking device 6 has a force transmitting component 63 , which is connected and installed between the eccentric cam 611 of the operating handle 61 and the force receiving portion 514 of the first force transmitting member 51 . The force transmission component 63 includes a block body 631 and an elastic piece 632 . When in the locked position, the eccentric cam 611 of the operating handle 61 applies a force to the force transmission component 63 , which in turn transmits the force to the first force transmission member 51 . When in the release position, the elastic piece 632 provides a restoring force to the blocking body 631 . The locking device 6 further includes a cover 64 that covers the first force transmission member 51 and stably holds the block body 631 at a position separated from the second force transmission member 62 .

[0043] The torque sensor 7 is installed on the main body 1 at a position opposite to the torque adjusting device 5, and the torque sensor 7 can sense the adjustment of the torque adjusting device 5 and display the torque setting value, so that the user can intuitively understand the setting state of the torque setting value. In this embodiment of the present invention, the torque sensing device 7 includes a monitor 70, a sensing element 71, a counter 72 and a power source 73, which are electrically connected to each other. The torque sensing device 7 is installed on the upper side 1 a of the main body 1 , and the power supply 73 is a battery and is installed in the second end 11 of the main body 1 to supply power to the monitor 70 , the sensing member 71 and the counter 72 .

[0044] The position of the sensing member 71 corresponds to the sensing hole 14, and the sensing member 71 has a movable part 711, which is inserted into and connected to the insertion hole 505 of the slide member 50 and moves accordingly, so that the sensing member 71 senses the displacement change of the slide member 50 through the sensing hole 14 and generates a torque signal, and the monitor 70 displays the torque setting value based on the torque signal. The sensing member 71 is a variable resistor.

[0045] The counter 72 is installed at a position of the pressing member 22 corresponding to the torque interruption device 3, and transmits a counting signal according to the number of times the blocking member 31 and the pressing member 22 escape, which can be displayed on the monitor 70. This allows the user to conveniently understand whether the digital torque wrench 100 has exceeded the torque setting number of times, allowing the user to accurately set the fastener to the desired poundage.

[0046] The main body 1 of the present invention further includes a gripping member 1c, which is fitted to the second end 11 of the main body 1 for ease of gripping and operation.

[0047] The present invention further comprises a biasing device 8 disposed between the body 1 and the slide member 50 . The biasing device 8 has an elongated elastic piece 80, which is installed between the main body 1 and the slide member 50 along a parallel axis L1, and the elastic piece 80 applies elastic force to the slide member 50 along the direction of an operating axis L3 perpendicular to the axis L1, thereby eliminating the gap between the slide member 50 and the main body 1. The elastic piece 80 has a hook fixing portion 81 at each end, and each hook fixing portion 81 is hooked onto a perforation 506 on the side of the slide member 50 to connect them. As a result, the projectile 80 is coupled to the slide member 50 and moves accordingly.

[0048] The rotary actuator 2 of the present invention further includes an adjusting device 9, which can adjust the degree of connection between the rotary actuator 2 and the torque interrupting device 3, thereby adjusting the torque precision of the wrench. In this embodiment of the present invention, the adjusting device 9 is installed between the end 204 of the rotating member 20 and the pressing member 22 . The adjustment device 9 has an adjustment member 90 and a nut 91 threaded onto one end of the adjustment member 90, and the adjustment member 90 and the nut 91 enter the main body 1 through a bore 16 on one side of the main body 1, and the other end of the adjustment member 90 is threaded into an adjustment hole 210 at the end 204. The adjustment member 90 has an adjustment end 901 and an abutment end 902 . The nut 91 has a hole 911 . The abutting end 902 is exposed to the adjustment hole 210 and is connected to the pressing member 22 . Thus, before shipping the wrench or during maintenance, a hand tool can be inserted into the drilling hole 16 and the hole 911 of the nut 91 and rotate the adjustment end 901 to adjust the pivot angle of the pressing member 22 relative to the end 204, thereby changing the contact area between the first connecting portion 224 of the pressing member 22 and the second connecting portion 312 of the blocking member 31.

[0049] The present invention further includes a resilient device S, which includes a spring S1 and a screw member S2. The screw member S2 is screwed into one side of the blocking member 31, and one end of the spring S1 is connected to the screw member S2, and the other end is connected to the first inner wall 122a. The spring S1 of the elastic device S allows the curved contact area 43 of the special-shaped elastic member 4 to keep the support part 501 of the sliding member 50 in a constant contact state.

[0050] As shown in Figures 6 and 7, the locking device 6 allows the user to rotate the first force transmission member 51 in the release position, adjust the torque setting value, and use the first force transmission member 51 to link the rotation of the second force transmission member 62. This allows the slide member 50 to be moved in tandem with the main body 1, and to be linearly displaced along the axis L1 toward the blocking member 31, thereby quickly adjusting the support portion 501 from the lower limit position to the upper limit position. That is, the support portion 501 supports the specially shaped elastic member 4 at the position of the specially shaped support section 43, and moves from the extreme end to near the central section. In this position, the torque setting value of the digital display torque wrench 100 is set to the maximum, thus adjusting the route. Since the first turning radius R1 is larger than the second turning radius R2, the user can quickly complete the adjustment operation by simply rotating the first force transmitting member 51 one or two times, which is very convenient for use. At this time, the blocking member 31 is in the first position, and the user can rotate the first force transmission member 51 to move the sliding member 50 and adjust the position of the support part 501 relative to the specially shaped support section 43, thereby achieving the function of quickly and easily adjusting from the lower torque limit to the upper torque limit. Naturally, when returning to the position of FIGS. 3 and 4, the present invention can quickly and easily achieve the function of adjusting from the upper torque limit to the lower torque limit simply based on the above-described adjusting operation.

[0051] Next, as shown in FIG. 7, the rotary digital display torque wrench 100 is in a state where the torque setting value is set to the maximum, so that the degree of curvature that generates the reaction force of the rotary device 2 in the portion between the fixed end 42 and the support part 501 is smaller than when the torque setting value is in the minimum state. When the rotational force of the digital torque wrench 100 is greater than the set value, as described above, the blocking member 31 will release from the pressing member 22, cutting off the transmission of force to the digital torque wrench 100 and prompting the user to stop applying force to avoid damaging the fastener. By utilizing the operation of the torque adjusting device 5 described above, the slide member 50 can be quickly moved and adjusted along the direction of the parallel axis L1, thereby achieving the function of quickly adjusting the torque.

[0052] As shown in FIGS. 8 to 14, in the second embodiment of the digital display torque wrench 100a according to the present invention, the same points as those in the first embodiment will not be described again. The differences are as follows: The operating handle 61 in the second embodiment is located on the bottom side 1b of the main body 1, so that the user can operate the locking device 6 from the bottom side 1b of the digital display torque wrench 100.

[0053] The main body 1 has another pivot hole 17 between the pivot hole 13 and the bore hole 15 , which communicates with the accommodation installation space 12 .

[0054] The rotary actuator 2 further includes a connecting rod 26, an actuating member 27, and two clamping plates 28. The rotary member 20 has a first impact surface 204a on one side of the end 204, and a first impact space SP1 is defined between the first impact surface 204a and the first inner wall 122a. The connecting rod 26 has a first connecting end 261 and an oppositely disposed second connecting end 262 . In this embodiment of the present invention, the first connecting end 261 of the connecting rod 26 is inserted through the hole 204b of the end 204 and the hole 261a of the connecting rod 26 via a fixing pin 263, so that the first connecting end 261 of the connecting rod 26 is pivotally mounted to the end 204.

[0055] On both sides of the two clamping plates 28, four fixing pins 281 are inserted into the holes 282 of the two clamping plates 28 and the holes 271 of the actuating member 27, so that the two clamping plates 28 and the actuating member 27 are fixed together. The second connecting end 262 of the connecting rod 26 is inserted through a fixing pin 264 into a hole 262 a and pivotally mounted on one side of the two clamping plates 28 . In the second embodiment, the actuating member 27 is two pieces, that is, the two actuating members 27 are sandwiched between two clamping plates 28, stacked and fixedly connected together.

[0056] The actuating member 27 and the two clamping plates 28 are fixed to the pivot hole 17, the holes 284 of the two clamping plates 28 and the holes 272 of the actuating member 27 by a fixing pin 283, whereby the two actuating members 27 and the two clamping plates 28 are pivotally mounted to the main body 1. In this way, the actuating member 27 can swing between the first swing position and the second swing position relative to the main body 1, so that the actuating member 27 can establish a linkage relationship with the second connecting end 262 of the connecting rod 26. That is, when the rotary member 20 swings, the connecting rod 26 can link the two clamping plates 28 together, and thus the two clamping plates 28 link the two operating members 27 together to cause them to swing. Each actuating member 27 has an actuating end 273 at one end remote from the connecting rod 26, the actuating end 273 having a vessel 274 and a first limiting portion 275, the first limiting portion 275 being remote from the rotational end 2a. The actuating member 27 has a second impact surface 276 on one side thereof, and a second impact space SP2 is defined between the second impact surface 276 and the second inner wall 122b.

[0057] In the second embodiment, the pressing member 22 is pivotally mounted in the opposite holes 285 of the two clamping plates 28 through the fixed pin 225 and is in interlocking contact with the actuating end 273 of the actuating member 27 . The second limiting portion 223 of the pressing member 22 and the first limiting portion 275 of the actuating member 27 are connected to each other, thereby limiting the swing range of the pressing member 22 .

[0058] In the second embodiment, the resetting member 25a is located in the vessel 274 and is disposed between the actuating member 27 and the pressing member 22, so as to normally maintain the connection between the pressing member 22 and the blocking member 31. The elastic members 206 are three in number and are located between the rotational member 20 and the main body 1, and provide a force that causes the rotational member 20 to return to its natural state.

[0059] The first force transmission member 51 a of the torque adjusting device 5 is spaced from the first contact pressure portion 512 and has a second gear portion 515 surrounding the operating shaft L 3 , which meshes with the first gear portion 504 of the sliding member 50 . The second gear portion 515 is a gear and is fixedly mounted on a non-circular shaft 516 of the first force transmission member 51a. The first force transmission member 51a has a tank 51a1, which is covered with a dustproof cover 52.

[0060] The second connecting end 621 of the second force transmission member 62a of the locking device 6 is slidably mounted on the non-circular shaft 516 of the first force transmission member 51a. As in the first embodiment, the locking device 6 of the second embodiment also has the function of selectively clamping the slide member 50 and the main body 1 tightly together. As a result, the main body 1 and the slide member 50 are in a stable locked state. In the locked position, the eccentric cam 611 of the operating handle 61 applies force to the second force transmission member 62a, which drives the second force transmission member 62a and the first force transmission member 51a to press against each other, tightly clamping the main body 1 and the component 50.

[0061] Furthermore, the thread portion 602 of the shaft 60 of the locking device 6 is drilled in the first force transmission member 51a and extends into the trough 51a1. As a result, the first threaded member 65 and the second threaded member 66 are threaded onto the threaded portion 603 . A disc spring 67 is provided between the first screw member 65 and the first force transmission member 51a. This absorbs vibrations and prevents the first threaded member 65 and the second threaded member 66 from coming off the shaft 60.

[0062] In the second embodiment, the adjusting device 9 is installed between the actuating member 27 and the pressing member 22 . The adjustment member 90 is threadedly mounted on the pressing member 22 and connected to the actuating member 27, thereby adjusting the pivot angle of the pressing member 22 relative to the actuating member 27, thereby achieving the effect of adjusting the contact area between the pressing member 22 and the blocking member 31, similar to the first embodiment.

[0063] Please refer to Figures 9 and 10a and 10b. In FIG. 9, the support portion 501 is at the lowest position, that is, the support portion 501 supports the specially shaped support section 43 of the specially shaped elastic member 4 at the most distal end and at the most distant position from the rotational movement end 2a. In this way, the torque setting value of the digital display torque wrench 100 is set to the minimum, and at the same time, the blocking member 31 is also positioned in the first position. As shown in FIG. 10b, when the digital torque wrench 100 is in its natural state, the axial line 260 of the connecting rod 26 and the axis L1 form a first included angle θ1, and the second impact surface 276 and the axis L1 form an impact included angle B. Furthermore, the second connecting end 262 of the connecting rod 26 is located on the reverse side LR, and the first included angle θ1 is greater than the impact included angle B.

[0064] 11a, 11b and 14, in the rotary digital display torque wrench 100, when the actuating member 27 is in the first swing position, the actuating member 27 can transmit the reaction force of the rotary device 2 to the special-shaped elastic member 4, and the portion between the fixed end 42 and the support portion 501 of the special-shaped elastic member 4 can be bent. When the torque of the digital torque wrench 100 is greater than the torque setting value, the blocking member 31 is released from the pressing member 22 and interrupted, thereby interrupting the transmission of the torque from the digital torque wrench 100 . As a result, when the actuating member 27 swings from the first swing position to the second swing position, the actuating member 27 moves with the connecting rod 26 and generates movement relative to the main body 1 . As a result, the operating member 27 and the rotational member 20 collide with the first inner wall 122a and the second inner wall 122b of the main body 1 at the same time, respectively. At the time of collision, the first impact surface 204a of the rotation member 20 causes the rotation member 20 to enter the first impact space SP1 and collide with the first inner wall 122a. The second impact surface 276 of the operating member 27 enters the second impact space SP2 and collides with the second inner wall 122b. This allows the user to feel a clear mechanical torque release sensation in his hand when rotating, thus informing the user that force application has stopped. Furthermore, the connecting rod 26 and the operating member 27 are installed so as to be interlocked between the rotating member 20 and the blocking member 31, and when the blocking member 31 escapes from the pressing member 22, the connecting rod 26 can instantly convert the force that it originally applied to push the rotating member 20 into a force that pulls the rotating member 20. Through this pulling force, a time delay can be achieved when the rotary member 20 hits the first inner wall 122a. When the rotary wrench reaches a predetermined torque value, the user is likely to experience inertial force. Therefore, through the interlocking effect of the connecting rod 26 of the present invention, the inertial force generated when the user pulls the fastener until the set torque value is reached is buffered, preventing excessive torque from being applied to the fastener, thereby achieving more accurate rotary operation. As a result, when the wrench torque reaches a predetermined value, the highest peak value X (Nm) appears. Subsequently, within a short period of one second (the time interval from t0 to t1 in FIG. 14), a second peak value Y (Nm) appears due to the inertial force applied by the user and is smaller than the highest peak value X (Nm). This prevents excessive application of force from the wrench to the fastener (see FIG. 14).

[0065] As shown in FIG. 11b, when the torque interruption device 3 interrupts the application of force to the digital display torque wrench 100, the axis 260 of the connecting rod 26 and the axis L1 form a second included angle θ2. The first included angle θ1 is greater than the second included angle θ2, and the first connecting end 261 of the connecting rod 26 can extend beyond the axis L1 of the main body 1, and both the first connecting end 261 and the second connecting end 262 are located on the reverse side LR of the main body 1. When the above-mentioned blocking member 31 is in the second position, the specially shaped elastic member 4 can provide a force that causes the torque interruption device 3 to return the rotary motion device 2 to its original state. When the rotational force of the digital torque wrench 100 is smaller than the torque setting value, the pressing member 22 and the interrupting member 31 are restored to their original connected state.

[0066] Next, as shown in Figures 12 and 13, when the locking device 6 is in the release position, the user can operate the torque adjustment device 5 to adjust the torque setting value and use the first force transmission member 51 to link the rotation of the second force transmission member 62. This allows the slide member 50 to be moved in tandem with the main body 1, and to be linearly displaced along the axis L1 toward the blocking member 31, thereby quickly adjusting the support portion 501 from the lower limit position to the upper limit position. Of course, when it is desired to return to the position of Figs. 9 and 10a, the present invention can quickly and easily achieve the function of adjusting from the upper torque limit to the lower torque limit simply by using the above-described adjusting operation.

[0067] In summary, the present invention has the following advantages: 1. In the locked position, the present invention increases the frictional resistance between the lock body 1 and the slider 50 through the locking device 6, preventing the slider 50 from moving relative to the body 1. This prevents micro-movements when applying force to the wrench, resulting in more accurate torque performance and no torque distortion. 2. The present invention eliminates the gap between the slide member 50 and the body 1 through the biasing device 8, making the correspondence between the two more precise, which is beneficial to the high-precision torque performance of the wrench. 3. The present invention uses the adjustment device 9 to adjust the pivot angle of the pressing member 22, thereby adjusting the contact area between the pressing member 22 and the blocking member 31 before shipping the wrench or during maintenance, thereby allowing for fine adjustment of the torque precision of the wrench. 4. Through the interlocking relationship between the rotary member 20, connecting rod 26, and actuating member 27, the present invention allows the user to feel a clear mechanical torque release sensation in his / her hand, thus informing the user that the application of force has stopped. At the same time, it buffers the inertial force exerted by the user when rotating the fastener until the preset torque value is reached, thereby preventing excessive torque from being applied to the fastener.

[0068] It should be noted that the use of relational terms such as first, second, etc. in this document is used only to distinguish one entity or operation from another, and does not necessarily require or imply an actual relationship or order between those entities or operations. Moreover, the terms "comprise," "have," or other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that includes a set of elements includes not only those elements but also other elements not included, and also includes other elements explicitly listed or inherent in such process, method, article, or apparatus.

[0069] While embodiments of the present invention have been shown and described, it will be understood that persons of ordinary skill in the art may make various changes, modifications, and substitutions to these embodiments without departing from the principles and spirit and modifications of the present invention. The scope of the invention is defined by the appended claims and their equivalents. [Explanation of symbols]

[0070] 100, 100A digital display torque wrench, 1 main unit, 10 first end, 11 second end, 12. Storage installation space; 121 Information Department, 122 Inner wall, 122a First inner wall, 122b Second inner wall, 13. 14 sensing hole, 15 perforation, 16 perforation, 17. 1a upper side, 1b bottom side, 1c gripping member; 2 Rotating device, 20 Rotating moving member, 201 engagement tank, 202 joint, 203 Pivot hole, 204 Terminal, 204a first impact surface, 204b perforation, 205 First Restricted Division, 206 Elastic members, 207 Pore, 208 perforation, 209 Pore, 21 drive head, 210 adjustment hole, 211 engagement block, 22 pressing member, 221 perforation, 222 fixing pin, 223 Second Restriction Division, 224 first connection part, 225 fixing pin, 23 fixing pin, 25 Repositioning member, 25a Repositioning member, 26 connecting rod, 260 axis center line, 261 First series connection end, 261a perforation, 262 second connecting end, 262a perforation, 263 fixing pin, 264 fixing pin, 27 Actuating member, 271 perforation, 272 perforation, 273 working end, 274 Tank, 275 First Restricted Division, 276 Second impact surface, 28 Sandwich plate; 281 fixing pin, 282 perforation, 283 fixing pin, 284 perforation, 285 Perforation 2a Rotating moving end, 3 Torque interrupt device, 31 blocking member, 311 perforation, 312 second connection part, 32 fixing pins, 4 special shape elastic member, 40 axis center line, 41 Body Section, 42 fixed end, 43 special shape support sections, 431 curve contact area, 5 torque adjusting device, 50 slide member, 501 Support part, 502 fixing pin, 503 Adjustment tank, 504 First gear section, 505 insertion hole, 506 perforation, 51 first force transmission member; 511 First series connection end; 512 First contact pressure part, 513 Swivel end, 514 Force receiving part, 515 second gear part, 516 Non-circular shaft, 51a first force transmission member; 51a1 tank, 52 Dustproof lid, 6 locking device, 60 shaft, 601 Pivot hole, 602 threaded part, 61 operating handle, 611 eccentric cam, 612 pivot member, 62 second force transmission member; 621 second connecting end, 622 Second contact pressure part, 623 Second gear section, 62a second force transmission member; 63 Force transmission components, 631 block letters, 632 Elastic piece, 64 lid, 65 First screw member, 66 Second screw member, 67 Disc spring, 7 torque sensing device, 70 monitors, 71 sensing member, 711 Moving parts, 72 counters, 73 Power supply, 8 bias device, 80 bullet fragments, 81 Hook fixing part, 9 Adjustment device, 90 Adjustment member, 901 Adjustment end, 902 Abutting end, 91 Nut, 911 holes, A slope angle, B impact angle, L1 axis, L2 rotation axis, L3 operation axis, LF antegrade side, LR retrograde side, R1 first turning radius, R2 second turning radius, S elastic device, S1 spring, S2 screw member, SP1 First Impact Space, SP2 Second Impact Space, θ1 first included angle, θ2 First included angle.

Claims

1. A digital display torque wrench that adjusts torque mechanically, comprising a main body, a rotary device, a torque interrupt device, a specially shaped elastic member, a torque adjusting device, a locking device and a torque sensing device. the body defining a first end and a second end axially spaced from the first end; The rotary device is swingably mounted on a first end of the body, and the rotary device has a body and a rotary end exposed from the body; the torque interruption device is pivotally mounted within the body and selectively connected to one end of the rotary motion device remote from the rotary motion end; The specially shaped elastic member has a fixed end and a specially shaped support section different from the fixed end, and the fixed end of the specially shaped elastic member is fixedly mounted on a torque interruption device; the torque adjustment device is attached to the main body, the torque adjustment device has a slide member, the slide member is installed so as to slide in the main body along a direction parallel to the axis, the slide member has a support portion, and the support portion is used for contacting with a specially shaped support section of a specially shaped elastic member; The locking device is attached between the slide member and the main body, and the locking device can be converted between a release position and a locking position. In the release position, a user can easily adjust the axial position of the support part of the slide member relative to the specially shaped elastic member. In the locking position, the locking device applies a frictional resistance force between the slide member and the main body, thereby preventing the slide member from moving relative to the main body. The torque sensing device is installed on the main body at a position opposite to the torque adjusting device, and the torque sensing device can sense a change in the position of the sliding member and display a torque setting value. Digital display torque wrench that adjusts torque mechanically.

2. The rotary end has a rotary shaft, and the main body rotates around the rotary shaft during a rotary operation. At the release position, a user can adjust the position of the slide member on the axis by rotating the slide member along an operating axis that is parallel to and perpendicular to the rotation axis, the locking device has a connection relationship with the torque adjusting device along the operating shaft; In the locked position, the locking device applies the frictional resistance force to the slide member along the direction of the operating shaft, thereby tightly sandwiching the slide member and the main body.

2. The digital display torque wrench for adjusting torque mechanically according to claim 1.

3. the torque adjustment device has a first force transmission member that moves with the slide member, and causes the slide member to move; the locking device includes a shaft that passes through the hole of the main body and the slide member along an operating axis, an operating handle that is swingably installed on one end of the shaft, and a second force transmission member that is installed on the shaft; The operating handle is coupled to the shaft to cause a movement along the direction of the operating axis, the first force transmission member and the second force transmission member are installed on the shaft, and in the locked position, the operating handle can pull and move the shaft along the direction of the operating axis, thereby driving the first force transmission member and the second force transmission member to press against each other, thereby tightly sandwiching the main body and the sliding member; in the released position, the operating handle is loosened relative to the shaft, allowing a user to pivot the first force transmission member, thereby coupling the sliding member to perform a linear sliding movement relative to the main body.

3. The digital display torque wrench for adjusting torque mechanically according to claim 2.

4. The rotary device has an adjustment device, The adjusting device is capable of adjusting the degree of connection between the rotary device and the torque interrupting device.

4. The digital display torque wrench for adjusting torque mechanically according to claim 3.

5. The main body has an upper side and an opposite bottom side along the direction of the operating shaft, the shaft is exposed to the main body from the upper side, so that the operating handle can be pivoted, the first force transmission member has a first connecting end and a first contact pressure part, the second force transmission member has a second connecting end and a second contact pressure part installed in the sliding member, and the second connecting end is connected to the second connecting end at the same time, and in the locked position, the first contact pressure part presses the main body, and the second contact pressure part presses the sliding member.

4. The digital display torque wrench for adjusting torque mechanically according to claim 3.

6. the first force transmission member has a force receiving portion spaced apart from the first contact pressure portion, the operating handle has an eccentric cam, the locking device has a force transmission component and is connected and installed between the eccentric cam and the force receiving portion, and when in the locked position, the eccentric cam applies force to the force transmission component, so that the force transmission component transmits force to the first force transmission member; the sliding member has a first gear part arranged parallel to the axial direction; the second force transmission member has a second gear part arranged between the second connecting end and the second contact pressure part, surrounding the operating shaft, the second gear part and the first gear part meshing; the first force transmission member is arranged on the main body and the shaft to rotate along the operating shaft and to couple with the second force transmission member, so that a user can rotate the first force transmission member to couple with the second force transmission member, which couples with the sliding member and moves it relative to the main body; the first force transmission member is separated from the first connecting end and has a pivot end, the pivot end having a first pivot radius; the second force transmission member has a second pivot radius; the second gear part is arranged along the second pivot radius, the first pivot radius being greater than the second pivot radius; The first connecting end and the second connecting end are connected by fitting together in a concave-convex manner.

6. A digital display torque wrench that adjusts torque mechanically according to claim 5.

7. The digital torque wrench for adjusting torque by a mechanical method further includes a bias device disposed between the body and the slide member, which applies a resilient force to the slide member along a direction perpendicular to the axis and the operating axis; The bias device has a resilient piece, and both ends of the resilient piece have hook fixing portions, and each of the hook fixing portions is hooked and connected to a side of the slide member, respectively.

4. The digital display torque wrench for adjusting torque mechanically according to claim 3.

8. the rotary device has a rotary member and a pressing member, The rotary member is pivotally mounted on the first end, the rotary member has a distal end that enters the body, and the pressing member is pivotally mounted on the distal end; The torque interruption device is selectively connected to the pressing member, the specially shaped support section has a curved contact area, which the support part contacts, and the specially shaped elastic member is installed in the body at an angle relative to the axis of the body; When the support part of the torque adjusting device abuts against the curved contact area of ​​the special-shaped elastic member at a position away from the fixed end, the torque setting value is minimum, and when the support part of the torque adjusting device abuts against the curved contact area of ​​the special-shaped elastic member and is close to the fixed end, the torque setting value is maximum, When the force applied by the rotation of the digital display torque wrench increases and becomes equal to the torque setting value, the torque interruption device releases from the pressing member and interrupts the application of force to the digital display torque wrench, and when the digital display torque wrench returns to its natural state, the torque interruption device and the pressing member automatically return to their original connected state. the axis divides the body into an antegrade side and a retrograde side, an axial center line of the specially shaped elastic member and the axis have an inclination angle, a fixed end of the specially shaped elastic member is located on the retrograde side of the body, and a specially shaped support section of the specially shaped elastic member is located on the antegrade side of the body beyond the axis of the body; The torque interruption device has a blocking member, the pressing member is connected to the blocking member in contact with the pressing member, and when the force applied by the rotation of the digital display torque wrench increases and becomes equal to the torque setting value, the blocking member is released from the pressing member and interrupts the application of force to the digital display torque wrench, When the digital display torque wrench returns to its natural state, the disconnecting member and the pressing member automatically return to their original connected state. a first limiting portion is provided on one side of the end portion, and the pressing member has a second limiting portion provided opposite thereto, the first limiting portion and the second limiting portion can be connected to each other to limit the swing width of the pressing member; a resetting member between the distal end and the pressing member, which normally keeps the pressing member and the torque interrupting device in a connected state; an elastic member between the rotating member and the main body, which provides a force for the rotating member to return to its natural state; the adjusting device is installed between the end and the pressing member, the adjusting device comprises an adjusting member and a nut screwed onto one end of the adjusting member, the other end of the adjusting member is screwed onto the end and connected to the pressing member, the pressing member has a first connecting part, the blocking member has a second connecting part on a side different from the special-shaped elastic member, and is thereby connected to the first connecting part, the adjusting member can adjust the pivot angle of the pressing member relative to the end, and thus can change the contact area of ​​the first connecting part with the second connecting part.

5. The digital display torque wrench for adjusting torque mechanically according to claim 4.

9. The main body has an upper side and a bottom side opposite to the operating shaft, the shaft is exposed to the main body from the bottom side, so that the operating handle can be pivoted; the first force transmission member has a first connecting end and a first contact pressure part; the second force transmission member has a second connecting end and a second contact pressure part installed in the sliding member, the second connecting end is installed to slide on the first connecting end; in the locked position, the first contact pressure part presses the main body, and the second contact pressure part presses the sliding member.

4. The digital display torque wrench for adjusting torque mechanically according to claim 3.

10. the sliding member has a first gear portion arranged parallel to the axial direction; the first force transmission member has a second gear portion arranged away from the first contact pressure portion and surrounding the operating shaft, the second gear portion and the first gear portion mesh with each other; the first force transmission member is arranged on the shaft so as to rotate along the operating shaft, so that a user can rotate the first force transmission member to move the sliding member relative to the main body; the first force transmission member has a rotating end arranged away from the first connecting end, the rotating end having a first turning radius; the second gear portion is arranged along a second turning radius, the first turning radius being greater than the second turning radius; the operating handle has an eccentric cam, and when the operating handle is in the locked position, the eccentric cam applies a force to the second force transmission member, thereby driving the second force transmission member and the first force transmission member to press against each other, and tightly sandwiching the main body and the slide member; The shaft of the locking device has a screw thread portion and is drilled into the first force transmission member, whereby the first screw member and the second screw member are screwed into the screw thread portion, and a disc spring is provided between the first screw member and the first force transmission member.

10. The digital display torque wrench for adjusting torque mechanically according to claim 9.

11. The digital torque wrench for adjusting torque by a mechanical method has a bias device installed between the body and the slide member, and applies elastic force to the slide member along a direction perpendicular to the axis and the operating axis; The bias device has a resilient piece, and both ends of the resilient piece have hook fixing portions, and each hook fixing portion is hooked and connected to a side of the slide member.

4. The digital display torque wrench for adjusting torque mechanically according to claim 3.

12. the shaft divides the body into an antegrade side and a retrograde side, the body has an inner wall, the inner wall having a first inner wall on the retrograde side and a second inner wall on the antegrade side; the rotary device has a rotary member, a connecting rod and an actuating member, the rotary member is pivoted at the first end and a distal end is on the rotary member, the connecting rod is pivoted at the distal end; the actuating member is pivoted to the body and can move between a first swing position and a second swing position relative to the body, whereby the actuating member is interlocked with the connecting rod; When the actuating member is in the first swing position, the actuating member can transmit the reaction force of the rotary actuator to the special-shaped elastic member; When the torque interruption device is disconnected, the force transmission of the digital display torque wrench is interrupted, so that when the operating member swings to the second swing position, the operating member moves relative to the connecting rod and the main body, causing the rotating member to collide with the first inner wall, and the operating member also collide with the second inner wall; The rotary member has a first impact surface at one end thereof, and a first impact space between the first impact surface and the first inner wall; the operating member has a second impact surface at one end thereof, and a second impact space between the second impact surface and the second inner wall; When the torque interruption device interrupts the application of force to the digital display torque wrench, the first impact surface enters the first impact space and collides with the first inner wall, and the second impact surface enters the second impact space and collides with the second inner wall; When the digital display torque wrench is in a natural state, the axis of the connecting rod and the shaft form a first included angle, and the second impact surface and the shaft form an impact included angle. The connecting rod has a first connecting end and a second connecting end installed opposite to the first connecting end, the first connecting end is pivoted to the end, and the second connecting end and the operating member have an interlocking relationship, and the second connecting end of the connecting rod is located on the reverse side. When the torque interruption device interrupts the application of force from the digital display torque wrench, the axis of the connecting rod and the axis form a second included angle, the first included angle is greater than the second included angle, the first included angle is greater than the impact included angle, and the first connecting end of the connecting rod exceeds the axis of the main body and is located on the reverse side of the main body together with the second connecting end; The torque interruption device has a blocking member, and the rotational movement device has a pressing member pivotally installed on the opposite side of the rotational movement end, one side of the pressing member being in interlocking contact with the operating member, and the other side being abuttingly connected to the blocking member, When the force applied by the rotation of the digital display torque wrench increases and becomes equal to the torque setting value, the blocking member is released from the pressing member, and the application of force to the digital display torque wrench is interrupted. When the digital display torque wrench returns to its natural state, the disconnecting member and the pressing member automatically return to their original connected state. the adjusting device is installed between the operating member and the pressing member, the adjusting device has an adjusting member and a nut screwed onto one end of the adjusting member, the opposite end of the adjusting member is screwed onto the pressing member and connected to the operating member, the pressing member has a first connecting part, the blocking member has a second connecting part for connecting with the first connecting part on a side different from the specially shaped elastic member, the adjusting member can adjust the pivot angle of the pressing member relative to the operating member, and thus can change the area in contact with the second connecting part by the first connecting part, the axis of the specially shaped elastic member and the axis have an inclination angle, the fixed end of the specially shaped elastic member is located on the retrograde side of the body, and the support section of the specially shaped elastic member is located on the antegrade side of the body beyond the axis of the body, and the torque adjustment device can be operated by a user to adjust the axial position of the support part relative to the specially shaped support section, thereby changing the inclination angle of the specially shaped elastic member relative to the body; The axis of the specially shaped elastic member relative to the body is inclined and is disposed within the body, and the specially shaped support section of the specially shaped elastic member has a curved contact area; The rotary device further comprises two clamping plates, the second connecting end of the connecting rod is pivoted on one side of the two clamping plates, the pressing member is pivoted on the other side of the two clamping plates, and the two actuating members are stacked and fixedly connected to the two clamping plates, the actuating member has a first limiting portion away from the rotary end, and the pressing member has a second limiting portion opposite to the first limiting portion, the first limiting portion and the second limiting portion can be connected to each other to limit the swing width of the pressing member; a resetting member is provided between the actuating member and the pressing member, and the resetting member keeps the pressing member and the blocking member in a normally connected state; and an elastic member is provided between the rotating member and the first inner wall of the main body, and the elastic member provides a force for the rotating member to return to its natural state.

5. The digital display torque wrench for adjusting torque mechanically according to claim 4.

13. the torque sensing device includes a sensing member and a monitor; the monitor is electrically connected to the sensing member, the sensing member having a movable portion, the movable portion being connected to the sliding member and moving accordingly, whereby the sensing member senses a change in displacement of the sliding member and generates a torque signal; the monitor displays the torque setting value according to the torque signal; the main body has an installation space, and the main body has a sensing hole at the first end thereof facing the second end thereof and communicating with the installation space; the sensing member senses the position change of the sliding member through the sensing hole; the torque sensing device further has a counter, and the counter can transmit a counting signal according to the number of times the blocking member and the pressing member escape, and display the counting signal on the monitor; the rotary device has a drive head and a rotary member, and the rotary member is pivotally mounted at the first end thereof, and the rotary end is mounted on the drive head, and the drive head is detachably mounted on the rotary member; The body further includes a gripping member disposed at the second end.

4. The digital display torque wrench for adjusting torque mechanically according to claim 3.

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