CN110666217B - But drill gun of automatic change moment of torsion - Google Patents
But drill gun of automatic change moment of torsion Download PDFInfo
- Publication number
- CN110666217B CN110666217B CN201910990498.3A CN201910990498A CN110666217B CN 110666217 B CN110666217 B CN 110666217B CN 201910990498 A CN201910990498 A CN 201910990498A CN 110666217 B CN110666217 B CN 110666217B
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- gear
- baffle
- shaft
- fixedly connected
- transmission shaft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
- B23B45/02—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor driven by electric power
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/02—Driving main working members
- B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
- B23Q5/12—Mechanical drives with means for varying the speed ratio
- B23Q5/14—Mechanical drives with means for varying the speed ratio step-by-step
- B23Q5/142—Mechanical drives with means for varying the speed ratio step-by-step mechanically-operated
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Abstract
The invention discloses a drill gun capable of automatically changing torque, which comprises a shell, wherein a fourth baffle, a third baffle, a second baffle gear bracket and a first baffle are fixedly connected in the shell from top to bottom in sequence; this but rifle of automatic change moment of torsion, through setting up the eighth gear, the ninth gear, sixth gear and seventh gear, when the drill bit receives the resistance, can convert to little drive ratio, thereby realize the effect of increase moment of torsion, through setting up the pull rod, transmission shaft a and spring, make the drill bit can be with the position recovery of sixth gear and seventh gear when receiving the resistance little, thereby reduce the moment of torsion of drill bit, it needs manual regulation to have solved ordinary rifle on the existing market when adjusting the moment of torsion through holistic structure setting, this time of having wasted the quality in the assembly process, the production speed of enterprise has been reduced, so current rifle is inconvenient to use, be unfavorable for the problem of using widely.
Description
Technical Field
The invention relates to the technical field of electric tools, in particular to a drill gun capable of automatically changing torque.
Background
At present, the development of industrial level, the manufacturing industry is the basic industry of industry, especially in the process of assembling products and producing products, the drill gun is often indispensable, and the ordinary drill gun in the market at present needs manual adjustment when adjusting the torque, wastes valuable time in the assembling process, reduces the production speed of enterprises, so the current drill gun is inconvenient to use, and is not beneficial to popularization and use.
Disclosure of Invention
In order to solve the problems, the invention provides a drill gun capable of automatically changing torque, which can convert into a small transmission ratio when a drill bit is subjected to resistance by arranging an eighth gear, a ninth gear, a sixth gear and a seventh gear so as to realize the function of increasing the torque, and can restore the positions of the sixth gear and the seventh gear when the drill bit receives the small resistance by arranging a pull rod, a transmission shaft a and a spring so as to reduce the torque of the drill bit.
In order to achieve the purpose, the invention provides the following technical scheme: an automatically variable torque drill gun, comprising: the drilling machine comprises a shell, a drill bit and a torque adjusting module, wherein a fourth baffle, a third baffle, a second baffle gear support and a first baffle are fixedly connected inside the shell from top to bottom in sequence;
the drill bit assembling and disassembling module is arranged on the first baffle and can assemble and disassemble a drill bit quickly, and the torque adjusting module achieves automatic adjustment of torque by changing a transmission ratio.
Further, the drill handling module comprises: the gear comprises a one-way gear shaft, a reducing sleeve, a second gear, a transmission gear, a step gear, a gear sleeve and a servo motor;
the left side of the lower surface of the first baffle is provided with a through hole, a one-way gear shaft is inserted in the through hole, the bottom end of the one-way gear shaft is fixedly connected with a reducing sleeve, the outer surface of the reducing sleeve is in threaded connection with a second gear, a drill bit is inserted in the reducing sleeve, the outer surface of the drill bit is sleeved with a drill sleeve, the right side gear of the second gear is connected with a transmission gear, the transmission gear is rotationally connected with the first baffle, and the right side gear of the transmission gear is connected with a step gear;
the through hole has been seted up on the right side of shown first baffle lower surface, and the right side fixedly connected with servo motor of first baffle upper surface, and servo motor's output shaft and step gear fixed connection.
Further, the torque adjustment module includes: the top end gear of the one-way gear shaft is connected with a first side gear, the outer surface of the first side gear is sleeved with a swinging block, a second side gear is arranged above the first side gear, the left side and the right side between the opposite surfaces of the first side gear and the second side gear are respectively connected with a first gear and a third gear through gears, and the right end of the third gear is fixedly connected with a fifth gear;
the gear support is rotatably connected to the outer portions of the first gear, the first side gear, the second side gear and the third gear, a fourth gear is connected to a lower side gear of the fifth gear, a second baffle gear support is arranged on the outer side of the gear support, the fourth gear is rotatably connected with the second baffle gear support, a driving table is fixedly connected to the right side face of the fourth gear, a through hole is formed in the left end of the upper surface of the second baffle gear support, a rotating shaft b is inserted in the through hole, the bottom end of the rotating shaft b is fixedly connected with the second side gear, a ninth gear is arranged on the left side above the second baffle gear support, and an eighth gear is arranged above the ninth gear;
the ninth gear and the eighth gear are both fixedly connected with the outer surface of the transmission shaft b, a through hole is formed in the side of the upper surface of the second baffle gear support, the transmission shaft a is inserted in the through hole, a sixth gear is arranged on the right side above the second baffle gear support, a seventh gear is arranged above the sixth gear, the sixth gear and the seventh gear are both fixedly connected with the transmission shaft a, a groove is formed in the bottom end of the transmission shaft a, a pull rod is arranged in the groove, the driving table is rotatably and movably connected with the transmission shaft a through the pull rod, a third baffle is arranged above the seventh gear, and the third baffle is respectively rotatably connected with the rotating shaft a and the rotating shaft b;
a spring is sleeved at the position, above the second baffle, of the transmission shaft a, a bearing is arranged above the spring, a clamping plate is arranged on the upper surface of the bearing, and the clamping plate is fixedly connected with the transmission shaft a; the top end of the transmission shaft a is sleeved with a shaft sleeve, the top end of the shaft sleeve is fixedly connected with an output shaft of the driving motor, and the outer surface of the driving motor is sleeved with a first baffle.
Furthermore, the outer surface of the reducing sleeve is conical and is matched with the internal thread of the second gear.
Furthermore, both ends of the first side gear are side gears, and the middle of the first side gear is fixedly connected with the two side gears through a connecting rod.
Furthermore, a fifth gear is arranged at the right end of the third gear, and the third gear and the fifth gear are fixedly connected through a connecting shaft.
Furthermore, the shape of a quarter section at the top end of the transmission shaft a is hexagonal and is matched with the shape of the inner wall of the shaft sleeve.
The invention has the following beneficial effects: compared with the prior art, the invention provides a drill gun capable of automatically changing torque, which has the following beneficial effects:
1. according to the invention, the eighth gear, the ninth gear, the sixth gear and the seventh gear are arranged, so that when a drill bit is subjected to resistance, the transmission ratio can be changed into a small transmission ratio, and the effect of increasing the torque is realized;
2. according to the invention, by arranging the pull rod, the transmission shaft a and the spring, the position of the sixth gear and the position of the seventh gear can be restored when the resistance received by the drill bit is small, so that the torque of the drill bit is reduced;
3. the invention solves the problems that the common drilling gun in the market needs manual adjustment when adjusting the torque, precious time is wasted in the assembly process, the production speed of an enterprise is reduced, and the current drilling gun is inconvenient to use and is not beneficial to popularization and use through the integral structure arrangement.
Drawings
FIG. 1 is an exploded view of the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is an enlarged view of a portion of the structure of the present invention;
FIG. 4 is a partial enlarged view of the structure of the present invention.
In the figure: 1-a housing; 2-a first gear; 3-a first side gear; 4-a unidirectional gear shaft; 5, drilling a sleeve; 6-a drill bit; 7-a reducing sleeve; 8-a second gear; 9-a transmission gear; 10-step gear; 11-gear sleeve; 12-a first baffle; 13-a servo motor; 14-swinging a block; 15-a third gear; 16-a fourth gear; 17-a drive stage; 18-fifth gear; 19-a pull rod; 20-a sixth gear; 21-seventh gear; 22-drive shaft a; 23-a spring; 24-a bearing; 25-a drive motor; 26-a fourth baffle; 27-a third baffle; 28-eighth gear; 29-drive shaft b; 30-ninth gear; 31-a gear holder; 32-a second side gear; 33-second shutter gear holder.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 2, fig. 3, and fig. 4, the present invention provides a technical solution: a drill gun capable of automatically changing torque comprises a shell 1, wherein a fourth baffle plate 26, a third baffle plate 27, a second baffle plate gear bracket 33 and a first baffle plate 12 are fixedly connected in the shell 1 from top to bottom in sequence;
a through hole is formed in the left side of the lower surface of the first baffle plate 12, a one-way gear shaft 4 is inserted in the through hole, a reducing sleeve 7 is fixedly connected to the bottom end of the one-way gear shaft, the outer surface of the reducing sleeve 7 is conical and is matched with the internal thread of the second gear 8, a second gear 8 is connected to the outer surface of the reducing sleeve 7 in a threaded manner, a drill bit 6 is inserted into the reducing sleeve 7 in a sleeved manner, a drill sleeve 5 is sleeved on the outer surface of the drill bit 6, a transmission gear 9 is connected to the right side gear of the second gear 8, the transmission gear 9 is rotatably connected with the first baffle plate 12, and a step gear 10;
a through hole is formed in the right side of the lower surface of the first baffle plate 12, a servo motor 13 is fixedly connected to the right side of the upper surface of the first baffle plate 12, an output shaft of the servo motor 13 is fixedly connected with a step gear 10, a top end gear of a one-way gear shaft 4 is connected with a first side gear 3, two ends of the first side gear 3 are both side gears, the middle of the first side gear is fixedly connected with two side gears through a connecting rod, a swing block 14 is sleeved on the outer surface of the first side gear 3, a second side gear 32 is arranged above the first side gear 3, the left side and the right side between opposite surfaces of the first side gear 3 and the second side gear 32 are respectively connected with a first gear 2 and a third gear 15 through gears, and the right end of the third gear;
a gear bracket 31 is rotatably connected to the outer portions of the first gear 2, the first side gear 3, the second side gear 32 and the third gear 15, a fifth gear 18 is arranged at the right end of the third gear 15, the third gear 15 and the fifth gear 18 are fixedly connected through a connecting shaft, a fourth gear 16 is connected to a lower side gear of the fifth gear 18, a second baffle gear bracket 33 is arranged at the outer side of the gear bracket 31, the fourth gear 15 is rotatably connected with the second baffle gear bracket 33, a driving table 17 is fixedly connected to the right side surface of the fourth gear 16, a through hole is formed in the left end of the upper surface of the second baffle gear bracket 33, a rotating shaft b29 is inserted into the through hole, the bottom end of a transmission shaft b29 is fixedly connected with the second side gear 32, a ninth gear 30 is arranged on the left side above the second baffle gear bracket 33, an eighth gear 28 is arranged above the ninth gear 30, the ninth gear 30 and the eighth gear 28 are both fixedly connected with the outer surface of the transmission shaft b29, a through hole is formed in the upper surface of the second baffle gear support 33, a transmission shaft a22 is inserted into the through hole, a sixth gear 20 is arranged on the right side above the second baffle gear support 33, a seventh gear 21 is arranged above the sixth gear 20, the sixth gear 20 and the seventh gear 21 are both fixedly connected with a transmission shaft a22, a groove is formed in the bottom end of the transmission shaft a22, a pull rod 19 is arranged in the groove, the driving table 17 is rotatably and movably connected with the transmission shaft a22 through the pull rod 19, a third baffle 27 is arranged above the seventh gear 21, the third baffle 27 is rotatably connected with a rotating shaft a22 and a rotating shaft b29 respectively, a spring 23 is sleeved at a position above the third baffle 27 of the transmission shaft a22, a bearing 24 is arranged above the spring 23, a clamping plate is arranged on the upper surface of the bearing 24, and the clamping plate is fixedly connected with the transmission shaft a 22; the top end of the transmission shaft a22 is sleeved with a shaft sleeve, the top end of the shaft sleeve and the output shaft of the driving motor 25 are fixedly connected with a quarter section of the top end of the transmission shaft a22, the shape of the quarter section is hexagonal, the top end of the shaft sleeve is matched with the shape of the inner wall of the shaft sleeve, the shaft sleeve can freely stretch and retract when the transmission shaft a22 moves, and the outer surface of the driving motor 25 is sleeved with a fourth baffle 26.
When the device is used, a user places a drill bit 6 in a reducing sleeve 7, a servo motor 13 is started to enable a step gear 10 to drive a second gear 8 to rotate through a transmission gear 9, so that the drill bit 6 is installed in the reducing sleeve 7, when the user uses the drill bit 5 to process blanks, especially blanks made of multiple materials are processed simultaneously, so that the resistance of the drill bit 5 is different, when the resistance received by the drill bit 6 is greater than that received by a spring 23, a gear support 31 can swing to drive a third gear 15 to rotate, a transmission shaft a22 is pulled to move downwards, the positions of a sixth gear 20 and a seventh gear 21 are moved downwards, the transmission ratio of the device is reduced, the effect of automatically increasing torque is realized, when the resistance received by the drill bit 6 is less than that received by the spring 23, the gear support 31 is not moved, when the user lifts a drilling gun, due to the arrangement of a side gear 3 and a one-way gear shaft 4, the drill bit moves downwards under the action of the gravity of the drill bit, so that the side gear 3 idles, and the safety in use is enhanced.
To sum up, this can change the drill gun of moment of torsion automatically, through setting up eighth gear 28, ninth gear 30, sixth gear 20 and seventh gear 21, when drill bit 6 receives the resistance, can convert to little drive ratio, thereby realize the effect of increase moment of torsion, through setting up pull rod 19, transmission shaft a22 and spring 23, make drill bit 6 receive the resistance when little can restore the position of sixth gear 20 and seventh gear 21, thereby reduce the moment of torsion of drill bit 6, it needs manual regulation when adjusting the moment of torsion to have solved ordinary drill gun in the existing market through holistic structural arrangement, this has wasted valuable time in the assembling process, the production speed of having reduced the enterprise, so the current drill gun is inconvenient to use, is unfavorable for the problem of using widely.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. An automatically variable torque drill gun, comprising: the drilling machine comprises a shell (1), a drill bit (6) and a torque adjusting module, wherein a fourth baffle (26), a third baffle (27), a second baffle gear bracket (33) and a first baffle (12) are fixedly connected with the inside of the shell (1) from top to bottom in sequence;
the first baffle (12) is provided with a drill bit loading and unloading module which can quickly load and unload a drill bit (6), and the torque adjusting module realizes automatic adjustment of torque by changing a transmission ratio;
the torque adjustment module includes: a top end gear of the one-way gear shaft (4) is connected with a first side gear (3), the outer surface of the first side gear (3) is sleeved with a swinging block (14), a second side gear (32) is arranged above the first side gear (3), the left side and the right side between opposite surfaces of the first side gear (3) and the second side gear (32) are respectively connected with a first gear (2) and a third gear (15) through gears, and the right end of the third gear (15) is fixedly connected with a fifth gear (18);
a gear bracket (31) is rotatably connected to the outer parts of the first gear (2), the first side gear (3), the second side gear (32) and the third gear (15), a fourth gear (16) is connected to a lower side gear of the fifth gear (18), a second baffle gear bracket (33) is arranged on the outer side of the gear bracket (31), the fourth gear (15) is rotationally connected with the second baffle gear bracket (33), the right side surface of the fourth gear (16) is fixedly connected with a driving platform (17), the left end of the upper surface of the second baffle gear bracket (33) is provided with a through hole, a rotating shaft b (29) is inserted in the through hole, the bottom end of the transmission shaft b (29) is fixedly connected with a second side gear (32), a ninth gear (30) is arranged on the left side above the second baffle gear bracket (33), and an eighth gear (28) is arranged above the ninth gear (30);
the ninth gear (30) and the eighth gear (28) are both fixedly connected with the outer surface of the transmission shaft b (29), a through hole is arranged on the side of the upper surface of the second baffle gear bracket (33), a transmission shaft a (22) is inserted in the through hole, a sixth gear (20) is arranged on the right side above the second baffle gear bracket (33), a seventh gear (21) is arranged above the sixth gear (20), the sixth gear (20) and the seventh gear (21) are both fixedly connected with a transmission shaft a (22), the bottom end of the transmission shaft a (22) is provided with a groove, a pull rod (19) is arranged in the groove, the driving platform (17) is rotatably and movably connected with the transmission shaft a (22) through a pull rod (19), a third baffle plate (26) is arranged above the seventh gear (21), the third baffle (27) is respectively and rotatably connected with the rotating shaft a (22) and the rotating shaft b (29);
a spring (23) is sleeved at the position, above the second baffle (27), of the transmission shaft a (22), a bearing (24) is arranged above the spring (23), a clamping plate is arranged on the upper surface of the bearing (24), and the clamping plate is fixedly connected with the transmission shaft a (22); the top end of the transmission shaft a (22) is sleeved with a shaft sleeve, the top end of the shaft sleeve is fixedly connected with an output shaft of a driving motor (25), and the outer surface of the driving motor (25) is sleeved with a first baffle (26).
2. An automatically variable torque drill gun according to claim 1, wherein said bit loading module comprises: the gear comprises a one-way gear shaft (4), a reducing sleeve (7), a second gear (8), a transmission gear (9), a step gear (10), a gear sleeve (11) and a servo motor (13);
the left side of the lower surface of the first baffle plate (12) is provided with a through hole, a one-way gear shaft (4) is inserted in the through hole, the bottom end of the one-way gear shaft is fixedly connected with a reducing sleeve (7), the outer surface of the reducing sleeve (7) is in threaded connection with a second gear (8), a drill bit (6) is inserted into the reducing sleeve (7), the outer surface of the drill bit (6) is sleeved with a drill sleeve (5), the right side gear of the second gear (8) is connected with a transmission gear (9), the transmission gear (9) is rotatably connected with the first baffle plate (12), and the right side gear of the transmission gear (9) is connected with a step gear (;
a through hole is formed in the right side of the lower surface of the first baffle plate (12), a servo motor (13) is fixedly connected to the right side of the upper surface of the first baffle plate (12), and an output shaft of the servo motor (13) is fixedly connected with the step gear (10).
3. An automatically variable torque drill gun as claimed in claim 2, wherein: the outer surface of the reducing sleeve (7) is conical and is matched with the internal thread of the second gear (8).
4. An automatically variable torque drill gun as claimed in claim 1, wherein: both ends of the first side gear (3) are side gears, and the middle of the first side gear is fixedly connected with the two side gears through a connecting rod.
5. An automatically variable torque drill gun as claimed in claim 1, wherein: and a fifth gear (18) is arranged at the right end of the third gear (15), and the third gear (15) and the fifth gear (18) are fixedly connected through a connecting shaft.
6. An automatically variable torque drill gun as claimed in claim 1, wherein: the shape of a quarter section at the top end of the transmission shaft a (22) is hexagonal and is matched with the shape of the inner wall of the shaft sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910990498.3A CN110666217B (en) | 2019-10-17 | 2019-10-17 | But drill gun of automatic change moment of torsion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910990498.3A CN110666217B (en) | 2019-10-17 | 2019-10-17 | But drill gun of automatic change moment of torsion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110666217A CN110666217A (en) | 2020-01-10 |
| CN110666217B true CN110666217B (en) | 2020-10-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910990498.3A Active CN110666217B (en) | 2019-10-17 | 2019-10-17 | But drill gun of automatic change moment of torsion |
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| Country | Link |
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| CN (1) | CN110666217B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5451127A (en) * | 1994-04-12 | 1995-09-19 | Chung; Lee-Hsin-Chih | Dual-function electrical hand drill |
| CN2510211Y (en) * | 2002-01-07 | 2002-09-11 | 蔡逢春 | Torque output structure improvement for electric drill |
| CN2873373Y (en) * | 2005-11-23 | 2007-02-28 | 徐伟强 | Electric drill speed regulating structure with shaft lock |
| CN101117999A (en) * | 2006-08-01 | 2008-02-06 | 创科实业有限公司 | Variable speed transmission for a power tool |
| CN201382102Y (en) * | 2007-09-11 | 2010-01-13 | 布莱克和戴克公司 | Transmission device |
| CN102554883A (en) * | 2010-12-08 | 2012-07-11 | 南京百为五金工具有限公司 | Handheld electric tool |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8057134B2 (en) * | 2007-06-26 | 2011-11-15 | Techtronic Power Tools Technology Limited | Chuck assembly |
-
2019
- 2019-10-17 CN CN201910990498.3A patent/CN110666217B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5451127A (en) * | 1994-04-12 | 1995-09-19 | Chung; Lee-Hsin-Chih | Dual-function electrical hand drill |
| CN2510211Y (en) * | 2002-01-07 | 2002-09-11 | 蔡逢春 | Torque output structure improvement for electric drill |
| CN2873373Y (en) * | 2005-11-23 | 2007-02-28 | 徐伟强 | Electric drill speed regulating structure with shaft lock |
| CN101117999A (en) * | 2006-08-01 | 2008-02-06 | 创科实业有限公司 | Variable speed transmission for a power tool |
| CN201382102Y (en) * | 2007-09-11 | 2010-01-13 | 布莱克和戴克公司 | Transmission device |
| CN102554883A (en) * | 2010-12-08 | 2012-07-11 | 南京百为五金工具有限公司 | Handheld electric tool |
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| Publication number | Publication date |
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| CN110666217A (en) | 2020-01-10 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20201010 Address after: Room 3, No. 999-5, Gangxi Avenue, Dongzaogang Town, Haimen City, Nantong City, Jiangsu Province, 226100 Applicant after: Nantong Dongke Tools Co.,Ltd. Address before: Room S602, block C, Peking building, Shanghai University, No. 99, SHANGDA Road, Baoshan District, Shanghai 200000 Applicant before: Yang Xinjun |
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