CN112720318A - Angle type adjustable torque wrench - Google Patents
Angle type adjustable torque wrench Download PDFInfo
- Publication number
- CN112720318A CN112720318A CN202011545443.0A CN202011545443A CN112720318A CN 112720318 A CN112720318 A CN 112720318A CN 202011545443 A CN202011545443 A CN 202011545443A CN 112720318 A CN112720318 A CN 112720318A
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- Prior art keywords
- torsion
- tool bit
- angle
- angle modulation
- rear end
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- 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.)
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- 230000005540 biological transmission Effects 0.000 claims abstract description 30
- 230000007246 mechanism Effects 0.000 claims abstract description 27
- 238000005452 bending Methods 0.000 claims abstract description 26
- 125000003003 spiro group Chemical group 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 9
- 238000007493 shaping process Methods 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 3
- 238000001356 surgical procedure Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 7
- 230000008439 repair process Effects 0.000 abstract description 4
- 238000002513 implantation Methods 0.000 abstract description 2
- 239000007943 implant Substances 0.000 description 4
- 230000000007 visual effect Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000004053 dental implant Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 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
- B25B13/00—Spanners; Wrenches
- B25B13/48—Spanners; Wrenches for special purposes
-
- 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
- B25B23/16—Handles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
An angle type adjustable torque wrench comprises a bending type tool bit, a transmission mechanism, a manual rotation driving mechanism and a torque adjusting mechanism, wherein the bending type tool bit comprises a tool bit main body, gear sleeve, tool bit barrel and angle drive gear axle, gear and angle drive gear axle meshing on the outer circumference of gear sleeve, drive mechanism includes pole portion and drive gear axle, drive gear axle and angle drive gear axle meshing, the front end of pole portion is provided with the type angle modulation base of bending, the rear end of tool bit barrel is fixed and is provided with the angle modulation connector, the first half of the type angle modulation base of bending is arranged in to an angle modulation connector shell cover, the outside of the rear end of angle modulation connector and tool bit barrel, the latter half of angle modulation connector shell and the external screw thread spiro union of the first half of the type angle modulation base of bending, the preceding tip and the angle modulation connector joint of angle modulation connector shell. The invention makes the oral and maxillofacial surgery and the oral implantation repair surgery process easier to operate.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an angle type adjustable torque wrench.
Background
In the process of oral and maxillofacial surgery and dental implantation, when the fixing screw, the anchorage traction nail, the dental implant and the positioning screw are installed in the craniomaxillary surface, the oral environment is small. The existing medical screwdriver is usually of a straight rod type, a doctor needs to continuously incline the medical screwdriver to perform operation on an affected part, the operation space is often limited, the operation process is not easy to operate, meanwhile, the medical screwdriver in an inclined state and a hand of the doctor holding the medical screwdriver are more prone to blocking the sight, screws are more prone to falling and even breaking in the installation process, once the screws fall into wound tissues, medical staff usually need to spend a large amount of time to find the tiny screws, the operation time is prolonged, and the operation risk is increased.
Therefore, there is a need for an angle screwdriver in the prior art, which is more suitable for the oral and maxillofacial surgery and the oral implant restoration surgery with poor visual field and limited operation space, so that the operation process is easier to operate.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides an angle-type adjustable torque wrench which is more suitable for oral and maxillofacial surgery and oral implant repair surgery with poor visual field and limited operation space, so that the operation process is easier to operate.
The invention is realized by the following technical scheme: an angle type adjustable torque wrench comprises a bending type tool bit, a transmission mechanism, a manual rotation driving mechanism and a torque force adjusting mechanism, wherein the bending type tool bit comprises a tool bit main body, a rotatable gear sleeve arranged in the tool bit main body, a tool bit barrel formed at the rear end of the tool bit main body and an angle transmission gear shaft arranged in the tool bit barrel, a gear on the outer circumference of the gear sleeve is meshed with the front end part of the angle transmission gear shaft, the lower end part of the tool bit main body is just opposite to the inner hole of the gear sleeve and is provided with an opening for placing a medical screw, the transmission mechanism comprises a rod part and a transmission gear shaft arranged in the rod part, the front end part of the transmission gear shaft is meshed with the rear end part of the angle transmission gear shaft, the front end of the rod part is provided with a bending type angle adjusting base, and the rear end of the tool bit barrel is fixedly, the back tip of angle modulation connector with the preceding tip of the type angle modulation base of bending touches and connects, and an angle modulation connector shell is arranged in the first half of the type angle modulation base of bending angle modulation connector reaches the outside of the back tip of tool bit barrel, the first half outer circumference of the type angle modulation base of bending is provided with the external screw thread, the latter half of angle modulation connector shell with the external screw thread spiro union, the preceding tip of angle modulation connector shell with the angle modulation connector joint.
The top of tool bit main part is provided with fixed plectrum, the middle part of this fixed plectrum pass through the hinge with the tool bit main part is connected, the latter half of fixed plectrum is located the outside of tool bit main part, the first half of fixed plectrum is located in the top of tool bit main part, the top side of tool bit main part is just right the first half of fixed plectrum is provided with the opening, the first half of fixed plectrum be provided with be used for with the annular groove complex positioning hook at the top of medical screw.
The tool bit is characterized in that an installation sleeve is arranged in the tool bit main body, the gear sleeve is arranged in the installation sleeve, a bearing is arranged between the installation sleeve and the gear sleeve, a locking nut is arranged at the lower end of the tool bit main body, and the opening is provided with the middle of the locking nut.
The front end part of the angle adjusting connector is provided with a step which protrudes outwards from the rear end part of the cutter head cylinder, and the inner ring of the front end part of the angle adjusting connector shell is provided with an annular convex edge on the front side of the step.
The manual rotation driving mechanism comprises a rotating nut fixedly arranged at the rear end of the rod part, a torsion spring mounting part arranged at the rear end of the rotating nut and a rotating handle in threaded connection with the outer circumference of the rotating nut and the torsion spring mounting part, a connecting shaft is formed at the rear part of the transmission gear shaft and penetrates through a through hole in the middle of the torsion spring mounting part to be connected with an anti-falling snap ring.
Torsion adjustment mechanism including the shaping in the torsion disc at the rear portion of drive gear axle, shaping in the torsion handle link at torsion spring installed part rear end middle part and connect the torsion regulation twist grip in the rear end of torsion handle link, the torsion disc is located pole portion with between the torsion spring installed part, the rear end of torsion handle link is provided with annular spacing groove, the side of torsion regulation twist grip is just right annular spacing groove is provided with two at least screws, and the screw in-connection has the threaded pin, the preceding tip of threaded pin stretches into in the annular spacing groove.
The torsion spring mounting piece is uniformly formed with a plurality of spring holes which are penetrated through the torsion spring mounting piece from front to back, the spring holes are annularly arranged, steel balls, torsion springs and torsion columns are sequentially arranged in each spring hole from front to back, a plurality of pits are uniformly arranged on the back end surface of the torsion disc corresponding to the steel balls, the pits are annularly arranged, the steel balls are opposite to the pits one by one, the torsion column extends out to the rear side of the torsion spring mounting piece, the rear end of the torsion column is propped against the front end surface of the torsion adjusting rotary handle, the distance between the front end surface of the left half part of the torsion adjusting rotary handle and the torsion disc is larger than the distance between the front end surface of the right half part of the torsion adjusting rotary handle and the torsion disc, the front end surface of the left half part of the torsion adjusting rotary handle and the front end surface of the right half part of the torsion adjusting rotary handle are in transition through an inclined surface.
The rear end of the rotating handle is provided with torque scales.
The invention has the beneficial effects that: the invention is more suitable for oral and maxillofacial surgery and oral implant repair surgery with poor visual field and limited operation space, so that the operation process is easier to operate, the operation time is reduced, and the operation risk is reduced.
Drawings
FIG. 1 is a schematic top view of the present invention;
FIG. 2 is a schematic cross-sectional view taken along the line X-X in FIG. 1;
FIG. 3 is a schematic side view of the present invention;
FIG. 4 is a schematic view of the cross-sectional structure of FIG. 2 taken along the direction W-W;
FIG. 5 is a schematic perspective view of a first viewing angle of the present invention;
FIG. 6 is a perspective view of the present invention from a second perspective;
FIG. 7 is a first schematic structural view of the torque adjusting mechanism;
FIG. 8 is a second schematic structural view of the torque adjustment mechanism;
FIG. 9 is a schematic cross-sectional view of a bending type tool tip;
fig. 10 is a top view of a bent type tool tip.
In the figure: 100-bending type tool bits; 101-a bit body; 102-a mounting sleeve; 103-gear sleeve; 104-a bearing; 105-a lock nut; 106-fixed paddle; 107-bit cylinder; 108-a hinge shaft; 109-positioning hooks; 110-medical screw;
200-a transmission mechanism; 201-angle drive gear shaft; 202-an angle adjustment connector; 203-angle adjusting connector housing; 204-a bending type angle adjusting base; 205-drive gear shaft; 206-a shaft portion; 207-propeller shaft bearing; 208-step; 209-annular convex edge;
300-manual rotation drive mechanism; 301-turning the nut; 302-turning the handle; 303-torsion spring mount; 304-torsion handle connection end;
400-torque adjustment mechanism; 401-torsion disc; 402-steel balls; 403-a torsion spring; 404-torsion bar; 405-torque adjustment twist grip; 406-a threaded pin; 407-anti-drop snap ring; 408-a connecting shaft; 409-pits; 410-inclined plane.
Detailed Description
The present invention is described in detail below with reference to the attached drawings.
As shown in fig. 1-5, an angle type adjustable torque wrench comprises a bending type tool bit 100, a transmission mechanism 200, a manual rotation driving mechanism 300 and a torque adjusting mechanism 400, wherein the bending type tool bit 100 comprises a tool bit main body 101, a gear sleeve 103 rotatably arranged in the tool bit main body 101, a tool bit cylinder 107 formed at the rear end of the tool bit main body 101 and an angle transmission gear shaft 201 arranged in the tool bit cylinder 107, a gear on the outer circumference of the gear sleeve 103 is engaged with the front end of the angle transmission gear shaft 201, an opening for placing a medical screw 110 is arranged at the lower end of the tool bit main body 101 opposite to the inner hole of the gear sleeve 103, the transmission mechanism 200 comprises a rod portion 206 and a transmission gear shaft 205 arranged in the rod portion 206, the front end of the transmission gear shaft 205 is engaged with the rear end of the angle transmission gear shaft 201, the front end of the rod portion 206 is provided with a bending type angle, the fixed angle modulation connector 202 that is provided with in rear end of tool bit barrel 107, the rear end of angle modulation connector 202 touches with the preceding tip of the type angle modulation base 204 that bends and connects, the first half of the type angle modulation base 204 is arranged in to a corner modulation connector shell 203 cover, the outside of the rear end of angle modulation connector 202 and tool bit barrel 107, the first half of the type angle modulation base 204 that bends outer circumference is provided with the external screw thread, the latter half and the external screw thread spiro union of angle modulation connector shell 203, the preceding tip and the angle modulation connector 202 joint of angle modulation connector shell 203.
During the use, loosen angle modulation connector shell 203, can rotation angle modulation connector 202 and the type tool bit 100 of bending, realize the type tool bit 100360 rotation of bending, will bend the type tool bit 100 and turn to the angle of being convenient for operate, screw up angle modulation connector shell 203, make the type tool bit 100 of bending fixed for when the interior little space operating space office of mouth is short, operating personnel can select to screw up the screw, manual drilling in the direction and the angle of being convenient for the operation. The invention is more suitable for oral and maxillofacial surgery and oral implant repair surgery with poor visual field and limited operation space, avoids the angle type adjustable torque wrench and hands from shielding sight, ensures that the operation process is easier to operate, reduces the operation time and reduces the operation risk.
As shown in fig. 9 and 10, a fixed shifting block 106 is arranged on the top of the tool bit main body 101, the middle of the fixed shifting block 106 is connected with the tool bit main body 101 through a hinge 108, the rear half of the fixed shifting block 106 is located on the outer side of the tool bit main body 101, the front half of the fixed shifting block 106 is located in the top of the tool bit main body 101, an opening is arranged on the side of the top of the tool bit main body 101, which faces the front half of the fixed shifting block 106, and a positioning hook 109 for being matched with an annular groove on the top of a medical screw 110 is arranged on the front half of the fixed shifting block 106. The fixing shifting piece 106 can rotate left and right along the hinge shaft 108, and after the medical screw 110 is placed in the fixing shifting piece 106, the positioning hook 109 is clamped in the annular groove at the top of the medical screw 110, so that the medical screw 110 is prevented from falling off.
The tool bit main body 101 is internally provided with an installation sleeve 102, a gear sleeve 103 is arranged in the installation sleeve 102, a bearing 104 is arranged between the installation sleeve 102 and the gear sleeve 103, the lower end part of the tool bit main body 101 is provided with a lock nut 105, and the opening is provided with the middle part of the lock nut 105. When in use, the medical screw 110 is inserted into the main body 101 through the opening.
As shown in fig. 9, the front end portion of the angle adjusting connector 202 is formed with a step 208 protruding outward from the rear end portion of the bit cylinder 107, and the inner ring of the front end portion of the angle adjusting connector housing 203 is provided with an annular projecting edge 209 on the front side of the step 208.
As shown in fig. 2, 4, 7 and 8, the manual rotation driving mechanism 300 includes a rotation nut 301 fixedly disposed at the rear end of the rod portion 206, a torsion spring mounting member 303 disposed behind the rotation nut 301, and a rotation handle 302 screwed to the outer circumferences of the rotation nut 301 and the torsion spring mounting member 303, wherein a connection shaft 408 is formed at the rear portion of the transmission gear shaft 205, and the connection shaft 408 penetrates through a middle through hole of the torsion spring mounting member 303 and is connected to an anti-drop snap ring 407. A drive shaft bearing 207 is provided between the drive gear shaft 205 and the rod portion 206. The rear end of the connecting shaft 408 is provided with an annular clamping groove, and the anti-falling snap ring 407 is arranged in the annular clamping groove to prevent the transmission gear shaft 205 from being loosened.
The torsion adjusting mechanism 400 comprises a torsion disc 401 formed at the rear part of the transmission gear shaft 205, a torsion handle connecting end 304 formed at the middle part of the rear end of the torsion spring mounting piece 303 and a torsion adjusting rotating handle 405 connected to the rear end of the torsion handle connecting end 304, the torsion disc 401 is positioned between the rod part 206 and the torsion spring mounting piece 303, the rear end part of the torsion handle connecting end 304 is provided with an annular limiting groove, the side surface of the torsion adjusting rotating handle 405 is provided with at least two screw holes right facing the annular limiting groove, the screw holes are internally connected with threaded pins 406, and the front end parts of the threaded pins 406 extend into the annular limiting groove. When the torsion adjusting rotary handle 405 is used, the torsion adjusting rotary handle is limited by the threaded pin 406 and the annular limiting groove and can rotate freely.
The torsion spring mounting member 303 is uniformly formed with a plurality of spring holes penetrating the torsion spring mounting member 303 in the front and rear direction, the spring holes are arranged in a ring shape, each spring hole is sequentially provided with a steel ball 402, a torsion spring 403 and a torsion column 404 from front to back, the rear end surface of the torsion disc 401 is uniformly provided with a plurality of pits 409 corresponding to the steel balls 402, the recesses 409 are annularly arranged, the steel balls 402 are opposite to the recesses 409 one by one, the torsion column 404 extends out towards the rear side of the torsion spring mounting piece 303, the rear end of the torsion column 404 abuts against the front end face of the torsion adjusting rotary handle 405, the distance between the front end face of the left half part of the torsion adjusting rotary handle 405 and the torsion disc 401 is larger than the distance between the front end face of the right half part of the torsion adjusting rotary handle 405 and the torsion disc 401, and the front end face of the left half part of the torsion adjusting rotary handle 405 and the front end face of the right half part of the torsion adjusting rotary handle 405 are in transition through an inclined plane 410.
Referring to fig. 8, the present invention is provided with 7 steel balls 402, 7 torsion springs 403 and 7 torsion posts 404, by rotating a torsion adjusting rotary handle 405, through the matching of the front end surface of the torsion adjusting rotary handle 405 and the torsion posts 404, different numbers of steel balls 402 are pressed into corresponding recesses 409 to provide 1-7 times of torsion, and the rear end of the rotary handle 302 is correspondingly provided with torsion scales. When the torque adjusting rotary handle 405 is rotated in the reverse direction, the steel balls 402 are sequentially separated from the torque disc 401, and then the torque is sequentially removed.
After the torque force is set, the rotating handle 302 is rotated, the torsion disc 401 and the transmission gear shaft 205 are driven to rotate through the torsion spring mounting member 303 and the steel ball 402, and the angle transmission gear shaft 201 and the gear sleeve 103 are driven to rotate, so that the medical screw 110 is driven to rotate.
Finally, it should be noted that the above-mentioned contents are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, and that the simple modifications or equivalent substitutions of the technical solutions of the present invention by those of ordinary skill in the art can be made without departing from the spirit and scope of the technical solutions of the present invention.
Claims (8)
1. The utility model provides an adjustable torque wrench of angle type which characterized in that: the angle type adjustable torque wrench comprises a bending type tool bit, a transmission mechanism, a manual rotation driving mechanism and a torque force adjusting mechanism, wherein the bending type tool bit comprises a tool bit main body, a rotatable gear sleeve arranged in the tool bit main body, a tool bit barrel formed at the rear end of the tool bit main body and an angle transmission gear shaft arranged in the tool bit barrel, a gear on the outer circumference of the gear sleeve is meshed with the front end part of the angle transmission gear shaft, the lower end part of the tool bit main body is right opposite to the inner hole of the gear sleeve and is provided with an opening for placing a medical screw, the transmission mechanism comprises a rod part and a transmission gear shaft arranged in the rod part, the front end part of the transmission gear shaft is meshed with the rear end part of the angle transmission gear shaft, the front end of the rod part is provided with a bending type angle adjusting base, and the rear end of the tool bit barrel, the back tip of angle modulation connector with the preceding tip of the type angle modulation base of bending touches and connects, and an angle modulation connector shell is arranged in the first half of the type angle modulation base of bending angle modulation connector reaches the outside of the back tip of tool bit barrel, the first half outer circumference of the type angle modulation base of bending is provided with the external screw thread, the latter half of angle modulation connector shell with the external screw thread spiro union, the preceding tip of angle modulation connector shell with the angle modulation connector joint.
2. An angularly adjustable torque wrench as claimed in claim 1, wherein: the top of tool bit main part is provided with fixed plectrum, the middle part of this fixed plectrum pass through the hinge with the tool bit main part is connected, the latter half of fixed plectrum is located the outside of tool bit main part, the first half of fixed plectrum is located in the top of tool bit main part, the top side of tool bit main part is just right the first half of fixed plectrum is provided with the opening, the first half of fixed plectrum be provided with be used for with the annular groove complex positioning hook at the top of medical screw.
3. An angularly adjustable torque wrench as claimed in claim 2, wherein: the tool bit is characterized in that an installation sleeve is arranged in the tool bit main body, the gear sleeve is arranged in the installation sleeve, a bearing is arranged between the installation sleeve and the gear sleeve, a locking nut is arranged at the lower end of the tool bit main body, and the opening is provided with the middle of the locking nut.
4. An angularly adjustable torque wrench as claimed in claim 1, wherein: the front end part of the angle adjusting connector is provided with a step which protrudes outwards from the rear end part of the cutter head cylinder, and the inner ring of the front end part of the angle adjusting connector shell is provided with an annular convex edge on the front side of the step.
5. An adjustable torque wrench according to any one of claims 1 to 4, characterised in that: the manual rotation driving mechanism comprises a rotating nut fixedly arranged at the rear end of the rod part, a torsion spring mounting part arranged at the rear end of the rotating nut and a rotating handle in threaded connection with the outer circumference of the rotating nut and the torsion spring mounting part, a connecting shaft is formed at the rear part of the transmission gear shaft and penetrates through a through hole in the middle of the torsion spring mounting part to be connected with an anti-falling snap ring.
6. An angularly adjustable torque wrench as claimed in claim 5, wherein: torsion adjustment mechanism including the shaping in the torsion disc at the rear portion of drive gear axle, shaping in the torsion handle link at torsion spring installed part rear end middle part and connect the torsion regulation twist grip in the rear end of torsion handle link, the torsion disc is located pole portion with between the torsion spring installed part, the rear end of torsion handle link is provided with annular spacing groove, the side of torsion regulation twist grip is just right annular spacing groove is provided with two at least screws, and the screw in-connection has the threaded pin, the preceding tip of threaded pin stretches into in the annular spacing groove.
7. An angularly adjustable torque wrench as claimed in claim 6, wherein: the torsion spring mounting piece is uniformly formed with a plurality of spring holes which are penetrated through the torsion spring mounting piece from front to back, the spring holes are annularly arranged, steel balls, torsion springs and torsion columns are sequentially arranged in each spring hole from front to back, a plurality of pits are uniformly arranged on the back end surface of the torsion disc corresponding to the steel balls, the pits are annularly arranged, the steel balls are opposite to the pits one by one, the torsion column extends out to the rear side of the torsion spring mounting piece, the rear end of the torsion column is propped against the front end surface of the torsion adjusting rotary handle, the distance between the front end surface of the left half part of the torsion adjusting rotary handle and the torsion disc is larger than the distance between the front end surface of the right half part of the torsion adjusting rotary handle and the torsion disc, the front end surface of the left half part of the torsion adjusting rotary handle and the front end surface of the right half part of the torsion adjusting rotary handle are in transition through an inclined surface.
8. An angularly adjustable torque wrench as claimed in claim 7, wherein: the rear end of the rotating handle is provided with torque scales.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011545443.0A CN112720318A (en) | 2020-12-24 | 2020-12-24 | Angle type adjustable torque wrench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011545443.0A CN112720318A (en) | 2020-12-24 | 2020-12-24 | Angle type adjustable torque wrench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112720318A true CN112720318A (en) | 2021-04-30 |
Family
ID=75605082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011545443.0A Pending CN112720318A (en) | 2020-12-24 | 2020-12-24 | Angle type adjustable torque wrench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112720318A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM320942U (en) * | 2007-02-16 | 2007-10-21 | Chau-Ming Jang | Anti-slip structure for wrench |
| CN204293282U (en) * | 2014-11-18 | 2015-04-29 | 佛山市彤鑫医疗器材股份有限公司 | A kind of torque spanner |
| CN205074971U (en) * | 2015-10-12 | 2016-03-09 | 万通智控科技股份有限公司 | Adjustable type quick change plum blossom ratchet torque spanner |
| CN105538206A (en) * | 2016-03-01 | 2016-05-04 | 陕西理工学院 | Combination wrench for outer hexagon bolts and nuts |
| TWM569674U (en) * | 2018-05-24 | 2018-11-11 | 龍崴股份有限公司 | Faster fixing structure improvement of wrench |
| CN212044424U (en) * | 2020-04-14 | 2020-12-01 | 豪丰茂五金制品(太仓)有限公司 | Digital display torque handheld screwdriver |
-
2020
- 2020-12-24 CN CN202011545443.0A patent/CN112720318A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM320942U (en) * | 2007-02-16 | 2007-10-21 | Chau-Ming Jang | Anti-slip structure for wrench |
| CN204293282U (en) * | 2014-11-18 | 2015-04-29 | 佛山市彤鑫医疗器材股份有限公司 | A kind of torque spanner |
| CN205074971U (en) * | 2015-10-12 | 2016-03-09 | 万通智控科技股份有限公司 | Adjustable type quick change plum blossom ratchet torque spanner |
| CN105538206A (en) * | 2016-03-01 | 2016-05-04 | 陕西理工学院 | Combination wrench for outer hexagon bolts and nuts |
| TWM569674U (en) * | 2018-05-24 | 2018-11-11 | 龍崴股份有限公司 | Faster fixing structure improvement of wrench |
| CN212044424U (en) * | 2020-04-14 | 2020-12-01 | 豪丰茂五金制品(太仓)有限公司 | Digital display torque handheld screwdriver |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210430 |