CN112792775A - Torque wrench - Google Patents
Torque wrench Download PDFInfo
- Publication number
- CN112792775A CN112792775A CN202110113483.6A CN202110113483A CN112792775A CN 112792775 A CN112792775 A CN 112792775A CN 202110113483 A CN202110113483 A CN 202110113483A CN 112792775 A CN112792775 A CN 112792775A
- Authority
- CN
- China
- Prior art keywords
- handle
- connector
- working head
- pointer
- lever
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 claims description 23
- 230000000694 effects Effects 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
- B25B23/142—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers
- B25B23/1422—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters
- B25B23/1427—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters by mechanical means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The invention relates to the technical field of manual tools, in particular to a torque wrench, which comprises a handle, a working head, a connector, a hand wheel, a plug, a screw and a sleeve, the pointer, a spring, the apical ring, the gyro wheel, the lever, pin and biography power round pin, working head rear end and handle front end all have the through-hole along the horizontal direction processing, the bottom of working head front portion has the working hole along the vertical direction processing, the middle part processing of working head front portion has the straight flute that extends along the vertical direction, biography power round pin both ends card is gone into the straight flute, the connector middle part is rotated with the working hole and is connected, the bottom processing of connector top expansion portion has the sphere, the top processing of connector top expansion portion has the recess with biography power round pin joint, the lever middle part is rotated with the pin and is connected, the anterior butt of lever is on biography power round pin upper portion, the gyro wheel rotates and installs at the apical ring front portion. The substantial effects of the invention are as follows: the setting of the torque can be done more easily and quickly.
Description
Technical Field
The invention relates to the technical field of manual tools, in particular to a torque wrench.
Background
The torque is the product of force and distance, and the torque applied needs to be controlled when fastening threaded fasteners such as screws, bolts, nuts and the like so as to ensure that the threads are fastened without damaging the threads due to overlarge torque and ensure that the threads are sufficiently fastened, so that the torque wrench is used for operating. The preset torque wrench has a preset torque value and an audible device. When the torque-limiting device is used, a required upper limit of a torque value is set, when the applied torque reaches a set value, the wrench can make a sound of clamping a tower or bend a certain angle at the connection part of the wrench, and the obvious hand feeling vibration is accompanied, so that the situation that the torque-limiting device is fastened and no force is applied is provided, and the completion of work is prompted. After the acting force is relieved, all related parts of the wrench can be automatically reset.
Chinese patent CN109866154A describes a torque wrench, including wrench head, wrench rod and afterburning loop bar, afterburning loop bar is the cavity casing, and the upper end is equipped with connecting groove, and wrench head and wrench rod are overall structure, and wrench head's lower extreme necking down department is equipped with the boss, and wrench rod's connecting groove and wrench head's boss face counterbalance lean on, and wrench rod and afterburning loop bar pass through rotation axis swing joint together, still are equipped with steel ball and spring in the afterburning loop bar, and wrench rod's lower extreme is equipped with the scarf, scarf and the scarf is with steel ball surface looks butt, and the lower extreme of steel ball is connected with the spring, and the lower extreme connection of spring is adjusted the jackscrew, adjusts the jackscrew and afterburning loop bar's lower extreme inner wall threaded connection. When the wrench is used, the nut is stretched into a bayonet in the wrench head, the stress application sleeve rod is twisted, when a set torque value is reached, the steel balls touch the inner wall of the stress application sleeve rod and send out clear alarm sound, vibration can be sensed on the stress application sleeve rod, and at the moment, locking can be stopped.
The technical scheme has the following problems: (1) because the sliding tongue applies enough pre-pressure to the shifting rod, the elasticity coefficient of the spring is larger, namely the spring is harder, and although the thread pair between the stress application sleeve rod and the handle is reduced, the preset torque is still harder in the actual use process; (2) and for the purpose of protecting the spring, after each use, the stress application loop bar needs to be restored to the initial state, namely no force is applied, so that the torque is almost set once for each use, and the working efficiency is influenced.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the technical problem that the prior preset torque wrench is laborious in torque setting is solved. A torque wrench with quick torque setting is provided.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the utility model provides a torque wrench, includes handle, working head, connector, hand wheel, end cap, screw rod, sleeve, pointer, spring, apical ring, gyro wheel, lever, pin and biography power round pin, working head and handle all are the tubulose, working head rear end and handle front end all have the through-hole along the processing of horizontal direction, the bottom of working head front portion has the working hole along the processing of vertical direction, the middle part processing of working head front portion has the straight flute that extends along the vertical direction, biography power round pin both ends card is gone into the straight flute, connector bottom processing has connecting portion, the connector middle part with the working hole rotates to be connected, the connector top expands, the bottom processing of connector top expansion has the sphere, the sphere and the working head inner wall butt of connector top expansion, the top processing of connector top expansion has the recess with biography power round pin joint, the top of the groove is positioned below the axis of the force transmission pin, the rear part of the working head is sleeved at the front end of the handle, the rear end of the working head and the front end of the handle are connected through the pin, the middle part of the lever is rotationally connected with the pin, the front part of the lever is abutted against the upper part of the force transmission pin, the top ring is installed in the handle, the outer wall of the top ring is abutted against the inner wall of the handle, the roller is rotationally installed at the front part of the top ring, the rear part of the lever is abutted against the roller, the spring is arranged in the handle, the rear part of the top ring is abutted against the spring, a pointer groove is processed at the middle part of the handle, scale marks are processed at two sides of the pointer groove, the sleeve is sleeved in the handle, the pointer is fixedly connected with the sleeve, the pointer is clamped into the pointer groove, an internal, the screw rod is abutted to the plug, and the hand wheel is fixedly connected with the screw rod.
The utility model provides a torque wrench, includes handle, working head, connector, sleeve, pointer, push ring, depression bar, unblock button, spring, apical ring, gyro wheel, lever, pin and biography power round pin, working head and handle all are the tubulose, working head rear end and handle front end all have the through-hole along the processing of horizontal direction, the bottom of working head front portion has the working hole along the processing of vertical direction, the middle part processing of working head front portion has the straight flute that extends along the vertical direction, biography power round pin both ends card is gone into the straight flute, connector bottom processing has connecting portion, the connector middle part with the working hole rotates to be connected, connector top inflation, the bottom processing of connector top inflation has the sphere, the sphere and the working head inner wall butt of connector top inflation, the top processing of connector top inflation has the recess with biography power round pin joint, the top of the groove is positioned below the axis of the force transmission pin, the rear part of the working head is sleeved at the front end of the handle, the rear end of the working head and the front end of the handle are connected through the pin, the middle part of the lever is rotationally connected with the pin, the front part of the lever is abutted against the upper part of the force transmission pin, the top ring is installed in the handle, the outer wall of the top ring is abutted against the inner wall of the handle, the roller is rotationally installed at the front part of the top ring, the rear part of the lever is abutted against the roller, the spring is arranged in the handle, the rear part of the top ring is abutted against the spring, a pointer groove is processed at the middle part of the handle, scale marks are processed at two sides of the pointer groove, the sleeve is sleeved in the handle, the pointer is fixedly connected with the sleeve, the pointer groove is clamped into the pointer groove, the push ring is sleeved outside the, the rear portion of the push ring is provided with two cutting grooves, the portion, located between the two cutting grooves, of the push ring is bent downwards, the pressing rod is fixedly connected with the bent portion of the push ring, the unlocking button is installed on the pressing rod, and an indicating window is formed in the position, corresponding to the scale mark, of the push ring.
The substantial effects of the invention are as follows: through the two times of force resolution of the groove at the top of the connecting head and the lever, under the same torque, the force required to be provided by the spring is reduced, the elastic coefficient of the spring is reduced, and the setting of the torque can be finished more easily and quickly.
Drawings
FIG. 1 is a schematic view of a torque wrench according to an embodiment.
FIG. 2 is a cross-sectional view of a torque wrench according to an embodiment.
FIG. 3 is a cross-sectional view of the front of a torque wrench according to an embodiment.
FIG. 4 is an exploded view of the front part of a torque wrench according to an embodiment.
FIG. 5 is a cross-sectional view of the front of a torque wrench according to an embodiment.
FIG. 6 is a schematic structural diagram of a second torque wrench according to an embodiment.
FIG. 7 is a schematic view of a second push ring according to an embodiment.
FIG. 8 is a schematic cross-sectional view of a second push ring according to an embodiment.
Wherein: 1. the handle, 2, a hand wheel, 3, a pointer groove, 4, a working head, 5, a baffle ring, 6, a connector, 7, a pointer, 8, a pin, 9, a sleeve, 10, a spring, 11, a plug, 12, a screw, 13, a top ring, 14, a roller, 15, a lever, 16, a force transmission pin, 17, a handle, 18, a pressure lever, 19, an unlocking button, 20, a groove pattern, 21, a push ring, 22, an indicating window, 23 and a cutting groove.
Detailed Description
The following provides a more detailed description of the present invention, with reference to the accompanying drawings.
The first embodiment is as follows:
a torque wrench, please refer to figures 1 to 5, comprising a handle 1, a working head 4, a connector 6, a hand wheel 2, a plug 11, a screw 12, a sleeve 9, a pointer 7, a spring 10, a top ring 13, a roller 14, a lever 15, a pin 8 and a force transmission pin 16, wherein the working head 4 and the handle 1 are both in a tubular shape, through holes are processed at the rear end of the working head 4 and the front end of the handle 1 along the horizontal direction, a working hole is processed at the bottom of the front part of the working head 4 along the vertical direction, a straight groove extending along the vertical direction is processed at the middle part of the front part of the working head 4, two ends of the force transmission pin 16 are clamped into the straight groove, a connecting part is processed at the bottom of the connector 6, the middle part of the connector 6 is rotatably connected with the working hole, the top of the connector 6 is expanded, a spherical surface is processed at the bottom of the expanded part at the top of the connector, the top of the groove is positioned below the axis of a force transmission pin 16, the rear part of a working head 4 is sleeved at the front end of a handle 1, the rear end of the working head 4 and the front end of the handle 1 are connected through a pin 8, the middle part of a lever 15 is rotatably connected with the pin 8, the front part of the lever 15 is abutted against the upper part of the force transmission pin 16, a top ring 13 is installed in the handle 1, the outer wall of the top ring 13 is abutted against the inner wall of the handle 1, a roller 14 is rotatably installed at the front part of the top ring 13, the rear part of the lever 15 is abutted against the roller 14, a spring 10 is arranged in the handle 1, the rear part of the top ring 13 is abutted against the spring 10, a pointer groove 3 is processed at the middle part of the handle 1, scale marks are processed at two sides of the pointer groove 3, a sleeve 9 is sleeved in the handle 1, the pointer 7 is fixedly connected with the sleeve 9, the, the hand wheel 2 is fixedly connected with the screw 12. The device also comprises a baffle ring 5 and a handle 17, wherein the baffle ring 5 is sleeved on the working head 4. In order to facilitate the insertion of the connector 6 into the working head 4, the working head 4 may be perforated. The grip 17 is fitted over the rear of the handle.
Example two:
a torque wrench, please refer to figures 6 to 8, comprising a handle 1, a working head 4, a connector 6, a sleeve 9, a pointer 7, a push ring 21, a press rod 18, an unlocking button 19, a spring 10, a top ring 13, a roller 14, a lever 15, a pin 8 and a force transmission pin 16, wherein the working head 4 and the handle 1 are both tubular, through holes are processed at the rear end of the working head 4 and the front end of the handle 1 along the horizontal direction, a working hole is processed at the bottom of the front part of the working head 4 along the vertical direction, a straight groove extending along the vertical direction is processed at the middle part of the front part of the working head 4, two ends of the force transmission pin 16 are clamped into the straight groove, a connecting part is processed at the bottom of the connector 6, the middle part of the connector 6 is rotatably connected with the working hole, the top of the connector 6 is enlarged, a spherical surface is processed at the bottom of the top enlarged part of the connector 6, the spherical surface, the top of the groove is positioned below the axis of a force transmission pin 16, the rear part of a working head 4 is sleeved at the front end of a handle 1, the rear end of the working head 4 and the front end of the handle 1 are connected through a pin 8, the middle part of a lever 15 is rotatably connected with the pin 8, the front part of the lever 15 is abutted against the upper part of the force transmission pin 16, a top ring 13 is arranged in the handle 1, the outer wall of the top ring 13 is abutted against the inner wall of the handle 1, a roller 14 is rotatably arranged at the front part of the top ring 13, the rear part of the lever 15 is abutted against the roller 14, a spring 10 is arranged in the handle 1, the rear part of the top ring 13 is abutted against the spring 10, a pointer groove 3 is processed at the middle part of the handle 1, scale marks are processed at two sides of the pointer groove 3, a pointer 9 is sleeved in the handle 1, the pointer 7 is fixedly connected with a sleeve 9, the pointer 7 is clamped into the pointer groove 3, a, the part of the push ring 21 between the two cutting grooves 23 is bent downwards, the pressure lever 18 is fixedly connected with the bent part of the push ring 21, the unlocking button 19 is installed on the pressure lever 18, and an indicating window 22 is processed on the push ring 21 corresponding to the position of the graduation line.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the invention as set forth in the claims.
Claims (2)
1. A torque wrench is characterized in that a torque wrench is provided,
comprises a handle, a working head, a connector, a hand wheel, a plug, a screw, a sleeve, a pointer, a spring, a top ring, a roller, a lever, a pin and a force transmission pin,
the working head and the handle are both in a tubular shape, the rear end of the working head and the front end of the handle are both processed along the horizontal direction to form through holes, the bottom of the front part of the working head is processed along the vertical direction to form working holes, the middle part of the front part of the working head is processed to form straight grooves extending along the vertical direction, the two ends of the force transmission pin are clamped into the straight grooves, the bottom of the connector is processed to form connecting parts, the middle part of the connector is connected with the working holes in a rotating mode, the top of the connector is expanded, the bottom of the top of the connector is processed to form spherical surfaces, the spherical surfaces of the top of the connector are abutted against the inner wall of the working head, the top of the connector is processed to form grooves connected with the force transmission pin, the tops of the grooves are located below the axis of the force transmission pin, the rear, the middle part of the lever is rotationally connected with the pin, the front part of the lever is abutted against the upper part of the force transmission pin,
the top ring is arranged in the handle, the outer wall of the top ring is abutted against the inner wall of the handle, the roller is rotatably arranged at the front part of the top ring, the rear part of the lever is abutted against the roller, the spring is arranged in the handle, the rear part of the top ring is abutted against the spring,
the improved handle is characterized in that a pointer groove is formed in the middle of the handle, scale marks are formed in two sides of the pointer groove, the sleeve is sleeved in the handle, the pointer is fixedly connected with the sleeve, the pointer is clamped in the pointer groove, internal threads are formed in the rear portion of the sleeve, the screw is in threaded connection with the rear portion of the sleeve, the plug is fixedly connected with the handle, the screw is abutted to the plug, and the hand wheel is fixedly connected with the screw.
2. A torque wrench is characterized in that a torque wrench is provided,
comprises a handle, a working head, a connector, a sleeve, a pointer, a push ring, a pressure lever, an unlocking button, a spring, a top ring, a roller, a lever, a pin and a force transmission pin,
the working head and the handle are both in a tubular shape, the rear end of the working head and the front end of the handle are both processed along the horizontal direction to form through holes, the bottom of the front part of the working head is processed along the vertical direction to form working holes, the middle part of the front part of the working head is processed to form straight grooves extending along the vertical direction, the two ends of the force transmission pin are clamped into the straight grooves, the bottom of the connector is processed to form connecting parts, the middle part of the connector is connected with the working holes in a rotating mode, the top of the connector is expanded, the bottom of the top of the connector is processed to form spherical surfaces, the spherical surfaces of the top of the connector are abutted against the inner wall of the working head, the top of the connector is processed to form grooves connected with the force transmission pin, the tops of the grooves are located below the axis of the force transmission pin, the rear, the middle part of the lever is rotationally connected with the pin, the front part of the lever is abutted against the upper part of the force transmission pin,
the top ring is arranged in the handle, the outer wall of the top ring is abutted against the inner wall of the handle, the roller is rotatably arranged at the front part of the top ring, the rear part of the lever is abutted against the roller, the spring is arranged in the handle, the rear part of the top ring is abutted against the spring,
the handle is characterized in that a pointer groove is formed in the middle of the handle, scale marks are formed on two sides of the pointer groove, the sleeve is sleeved in the handle, the pointer is fixedly connected with the sleeve, the pointer is clamped in the pointer groove, the push ring is sleeved outside the handle, the push ring is fixedly connected with the pointer, grooves are formed in the rear portion of the pointer groove of the handle, two cutting grooves are formed in the rear portion of the push ring, the portion, between the two cutting grooves, of the push ring is bent downwards, the press rod is fixedly connected with the bent portion of the push ring, the unlocking button is installed on the press rod, and an indicating window is formed in the position, corresponding to the scale marks, of the push ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110113483.6A CN112792775A (en) | 2021-01-27 | 2021-01-27 | Torque wrench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110113483.6A CN112792775A (en) | 2021-01-27 | 2021-01-27 | Torque wrench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112792775A true CN112792775A (en) | 2021-05-14 |
Family
ID=75812288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110113483.6A Pending CN112792775A (en) | 2021-01-27 | 2021-01-27 | Torque wrench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112792775A (en) |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH354046A (en) * | 1958-10-17 | 1961-04-30 | Chaves Soler Alberto | Torque wrench |
| US3742786A (en) * | 1970-05-26 | 1973-07-03 | Precision Engineering | Torque spanners |
| DE8803289U1 (en) * | 1988-03-11 | 1988-07-07 | Eduard Wille Gmbh & Co, 5600 Wuppertal | Torque wrench |
| US4898068A (en) * | 1988-03-11 | 1990-02-06 | Eduard Wille Gmbh U. Co. | Torque wrench |
| JPH0711277U (en) * | 1993-07-15 | 1995-02-21 | 有限会社ゴーテック | Wrench with built-in torque limiting mechanism |
| JP2000354977A (en) * | 1999-06-14 | 2000-12-26 | Toyota Motor Corp | Preset type torque wrench |
| TW433131U (en) * | 2000-03-14 | 2001-05-01 | Huang Jin Tzuen | Improved structure for torque wrench |
| CN2445865Y (en) * | 2000-08-02 | 2001-09-05 | 陕西汉中品鼎扭矩工具制造有限责任公司 | Preset torque spanner |
| RU2226148C2 (en) * | 2001-11-15 | 2004-03-27 | Открытое акционерное общество "АВТОВАЗ" | Torque wrench |
| JP2004358625A (en) * | 2003-06-05 | 2004-12-24 | Setagaya Seiki Kk | Ratchet wrench |
| JP3156952U (en) * | 2009-10-16 | 2010-01-28 | 特典工具有限公司 | Torque spanner structure that is accurate in setting, easy to read, prevents erroneous contact, and can hold the torque value reliably |
| CN202357075U (en) * | 2011-11-30 | 2012-08-01 | 西安理工大学 | Graphite electrode torque wrench |
| WO2014012622A1 (en) * | 2012-07-20 | 2014-01-23 | Tecnogi S.R.L. | Electromechanical digital torque wrench |
| US20150328756A1 (en) * | 2014-05-16 | 2015-11-19 | National Kaohsiung University Of Applied Sciences | Digital torque wrench |
| CN208759061U (en) * | 2018-09-13 | 2019-04-19 | 贵阳华恒机械制造有限公司 | Eccentric parallel axes special-shaped part fixture |
| CN111546275A (en) * | 2020-06-11 | 2020-08-18 | 苏州市职业大学 | Torque-limiting screwdriver |
| CN214445938U (en) * | 2021-01-27 | 2021-10-22 | 杭州倍力耐工具有限公司 | Torque wrench |
-
2021
- 2021-01-27 CN CN202110113483.6A patent/CN112792775A/en active Pending
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH354046A (en) * | 1958-10-17 | 1961-04-30 | Chaves Soler Alberto | Torque wrench |
| US3742786A (en) * | 1970-05-26 | 1973-07-03 | Precision Engineering | Torque spanners |
| DE8803289U1 (en) * | 1988-03-11 | 1988-07-07 | Eduard Wille Gmbh & Co, 5600 Wuppertal | Torque wrench |
| US4898068A (en) * | 1988-03-11 | 1990-02-06 | Eduard Wille Gmbh U. Co. | Torque wrench |
| JPH0711277U (en) * | 1993-07-15 | 1995-02-21 | 有限会社ゴーテック | Wrench with built-in torque limiting mechanism |
| JP2000354977A (en) * | 1999-06-14 | 2000-12-26 | Toyota Motor Corp | Preset type torque wrench |
| TW433131U (en) * | 2000-03-14 | 2001-05-01 | Huang Jin Tzuen | Improved structure for torque wrench |
| CN2445865Y (en) * | 2000-08-02 | 2001-09-05 | 陕西汉中品鼎扭矩工具制造有限责任公司 | Preset torque spanner |
| RU2226148C2 (en) * | 2001-11-15 | 2004-03-27 | Открытое акционерное общество "АВТОВАЗ" | Torque wrench |
| JP2004358625A (en) * | 2003-06-05 | 2004-12-24 | Setagaya Seiki Kk | Ratchet wrench |
| JP3156952U (en) * | 2009-10-16 | 2010-01-28 | 特典工具有限公司 | Torque spanner structure that is accurate in setting, easy to read, prevents erroneous contact, and can hold the torque value reliably |
| CN202357075U (en) * | 2011-11-30 | 2012-08-01 | 西安理工大学 | Graphite electrode torque wrench |
| WO2014012622A1 (en) * | 2012-07-20 | 2014-01-23 | Tecnogi S.R.L. | Electromechanical digital torque wrench |
| US20150328756A1 (en) * | 2014-05-16 | 2015-11-19 | National Kaohsiung University Of Applied Sciences | Digital torque wrench |
| CN208759061U (en) * | 2018-09-13 | 2019-04-19 | 贵阳华恒机械制造有限公司 | Eccentric parallel axes special-shaped part fixture |
| CN111546275A (en) * | 2020-06-11 | 2020-08-18 | 苏州市职业大学 | Torque-limiting screwdriver |
| CN214445938U (en) * | 2021-01-27 | 2021-10-22 | 杭州倍力耐工具有限公司 | Torque wrench |
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