CN110091276B - Screwdriver capable of replacing blade inside cutter body - Google Patents
Screwdriver capable of replacing blade inside cutter body Download PDFInfo
- Publication number
- CN110091276B CN110091276B CN201910516769.1A CN201910516769A CN110091276B CN 110091276 B CN110091276 B CN 110091276B CN 201910516769 A CN201910516769 A CN 201910516769A CN 110091276 B CN110091276 B CN 110091276B
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- Prior art keywords
- blade
- screwdriver
- knob
- fixing
- hole
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- 238000003860 storage Methods 0.000 claims description 31
- 210000000078 claw Anatomy 0.000 claims description 17
- 238000005520 cutting process Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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
- B25B15/00—Screwdrivers
- B25B15/02—Screwdrivers operated by rotating the handle
-
- 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
- B25B23/0007—Connections or joints between tool parts
- B25B23/0035—Connection means between socket or screwdriver bit and tool
-
- 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)
- Details Of Cutting Devices (AREA)
- Knives (AREA)
Abstract
The application discloses a screwdriver capable of replacing blades in a cutter body, which comprises a cutter body, a fixing assembly and a replacement assembly, wherein the fixing assembly is connected with the cutter body, the replacement assembly comprises a blade group and a blade replacement device, the blade assembly comprises a plurality of blades, the blades are connected with the replacement device, one blade can reach the fixing assembly through operating the replacement device, the operation of the fixing assembly is used for fixing the reached blade axially and radially, the operation of the fixing assembly is used for removing the fixing of the blade when the blade needs to be replaced, and then the operation of the replacement device is used for switching the other blade into the fixing assembly for fixing, so that the internal replacement of the blade is realized. The screwdriver with the replaceable blade in the screwdriver body has the advantages that the blade of the screwdriver with the replaceable blade in the screwdriver body is not lost, the replacement is convenient and fast, the replaced blade cannot fall off, and the safety is good.
Description
Technical Field
The application relates to the technical field of machining, in particular to a screwdriver with a blade capable of being replaced in a cutter body.
Background
Screwdrivers are a common installation and maintenance tool, which is an indispensable tool in both daily household life and industrial production. Screwdrivers can be classified into a number of classes according to the different blades, and screwdrivers of each class of blades also have different sizes to accommodate different applications. The screwdriver can be divided into an integral type and a split type according to the connection mode of the blade and the handle. The blade of the integral screwdriver is fixedly connected with the tool shank, the blade and the tool shank are firmly connected, and can bear larger screwing force in the use process without the condition that the blade and the tool shank are separated, but only one type and size of blade can be provided by one integral screwdriver; the blade of split type screwdriver and handle of a knife detachable connect, a split type screwdriver be equipped with a plurality of tool bits with the handle of a knife adaptation, can adapt to different application requirements through changing the tool bit. Because an integral screwdriver can only provide a kind of cutting edge, in order to meet the use requirement, a plurality of screwdrivers with different cutting edge categories need to be provided, a plurality of screwdrivers need to be prepared aiming at more complicated application scenes, the storage occupation space is more, the screwdrivers are easy to lose, and the screwdrivers are inconvenient to take. The split screwdriver can effectively save the storage space, is not easy to lose and is convenient to use. However, the blade and the handle of the split screwdriver in the prior art are mostly connected in a clearance fit manner, the blade cannot be fixed in the axial direction of the blade, the blade may fall out of the handle along the axial direction of the blade in the use process, the blade is easy to lose, and serious injury accidents are also likely to occur, so that the split screwdriver is forbidden in some important industrial industries. To sum up, the existing detachable screwdriver with replaceable blade has some defects, which cause the application safety and convenience to be affected, the application range to be limited, and the structure of the screwdriver to be optimized needs to be improved.
Disclosure of Invention
Therefore, the main object of the present application is to provide a screwdriver capable of replacing blades inside a blade body, comprising a blade body, a fixing assembly connected with the blade body, and a replacement assembly, wherein the replacement assembly comprises a blade group and a blade replacement device, the blade assembly comprises a plurality of blades, the blades are connected with the replacement device, one blade can reach the fixing assembly through operating the replacement device, the operation fixing assembly is used for fixing the reached blade in an axial direction and a radial direction, the operation fixing assembly is used for releasing the fixing of the blade when the blade needs to be replaced, and then the replacement device is used for switching the other blades to enter the fixing assembly for fixing, so that the internal replacement of the blade is realized.
In order to achieve the above object, the present application provides a screwdriver capable of replacing a blade in a cutter body, comprising a cutter body, a fixing component and a replacement component, wherein the fixing component is installed in combination with the cutter body, the replacement component comprises a replacement device and a plurality of blades, the blades are stored in the replacement device, the replacement device transmits one blade to the fixing component, and the fixing component forms axial and radial limit for the blades.
Preferably, the cutter body comprises a supporting sleeve and a bearing sleeve, and the supporting sleeve and the bearing sleeve are connected with each other at the open ends.
Preferably, one end of the bearing sleeve, which is far away from the supporting sleeve, is provided with a clamping block groove, the clamping block groove is positioned in the middle of the end face of the bearing sleeve, the bearing sleeve is provided with a middle hole along the middle shaft, one end opening of the middle hole is positioned at the bottom of the clamping block groove, the bottom of the clamping block groove is provided with two limiting grooves, the two limiting grooves are respectively positioned at two sides of the middle hole, and the positions of the side part of the bearing sleeve and the two end parts of the clamping block groove are axially aligned with two positioning grooves.
Preferably, the fixing assembly comprises a cover plate and two clamping blocks, the cover plate is arranged at one end of the bearing sleeve, which is far away from the supporting sleeve, and is fixedly connected with the bearing sleeve, and a cover plate fixing hole is formed in the middle of the cover plate; the clamping block is characterized in that one end of the clamping block is provided with a claw, the other end of the clamping block is provided with a buckle, a limiting block is arranged in the middle of the clamping block, the two clamping blocks are oppositely arranged in the clamping block groove, the two limiting blocks are respectively inserted into the two limiting grooves, the two buckles are respectively aligned with the two positioning grooves, and when the two buckles are respectively connected with the two positioning grooves in a clamping mode, the two clamping blocks are contacted to form a clamping jaw hole.
Preferably, the replacing assembly comprises two blade storage barrels, two knobs and four blades, wherein the two blade storage barrels are rotatably arranged in the supporting sleeve, one end of each blade storage barrel is provided with a rotating shaft, the other end of each blade storage barrel is connected with the knob, the rotating shaft is inserted into the bearing sleeve, the knob is positioned outside the supporting sleeve, each blade storage barrel is provided with two parallel blade holes, the blades are stored in the blade holes, the blade storage barrels are rotated, and one blade hole is aligned with the middle hole.
Preferably, one end of the supporting sleeve, which is far away from the bearing sleeve, is provided with two knob holes, two knob grooves are respectively formed around the two knob holes, the four knob grooves are parallel, and the knob is connected with the blade storage cylinder through the knob holes.
Preferably, the knob comprises a knob head, two positioning blocks and a connector, the connector is connected with the blade storage cylinder, the two positioning holes are positioned at one end of the knob head, which is close to the connector, and the two positioning blocks correspond to the two knob grooves.
Preferably, the blade comprises a cutter head, a radial fixing part, an axial fixing part and a stop ring which are sequentially arranged, the shape and the size of the radial fixing part are the same as those of the cover plate fixing hole, the shaft diameter of the radial fixing part is larger than the aperture of the claw hole, the shape and the size of the axial fixing part are the same as those of the claw hole, and the shaft diameter of the stop ring is larger than the maximum distance between two claws.
Preferably, the cover plate fixing hole is a regular hexagonal hole, and the radial fixing portion is a regular hexagonal column.
Preferably, the jaw hole is a regular hexagonal hole, and the axial fixing portion is a regular hexagonal column.
Compared with the prior art, the screwdriver with the replaceable blade inside the cutter body has the advantages that: the blade is replaced in the cutter body, so that the blade cannot be lost and safety accidents caused by falling of the blade cannot occur; the replaced blade is fixed in the axial direction and the radial direction, so that the blade is more firm in positioning, larger in bearable tightening torque and good in safety; the blade is convenient to replace and operate and has high speed.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a screwdriver with a replaceable blade inside the screwdriver body according to the present application.
Fig. 2 is a left side view of a screwdriver with a replaceable blade inside the screwdriver body according to the present application.
Fig. 3 is a schematic cross-sectional view of A-A of fig. 2.
Fig. 4 is a schematic structural view of a supporting sleeve of a screwdriver with a replaceable blade inside a screwdriver body according to the present application.
Fig. 5 is a schematic structural view of a bearing sleeve of a screwdriver with a replaceable blade in the screwdriver body according to the present application.
Fig. 6 is a schematic structural view of a cover plate of a screwdriver with a replaceable blade inside a screwdriver body according to the present application.
Fig. 7 is a schematic structural view of a clamping block of a screwdriver with a replaceable blade inside a screwdriver body according to the present application.
Fig. 8 is a schematic structural view of a replacement assembly of a screwdriver capable of replacing a blade inside a screwdriver body according to the present application.
Fig. 9 is a schematic view showing a structure of a knob of a screwdriver capable of changing a blade inside a screwdriver body according to the present application.
Fig. 10 is a schematic view showing the structure of the blade of the screwdriver with the blade replaced in the interior of the screwdriver body.
Detailed Description
Referring to fig. 1 and 3, a screwdriver capable of changing blades inside a screwdriver body according to the present application comprises a screwdriver body 10, a fixing assembly 20 and a changing assembly 30, wherein the fixing assembly 20 is combined with the screwdriver body, the changing assembly 30 is combined with the screwdriver body 10, the changing assembly 30 comprises a changing device and a blade group, the blade group comprises a plurality of blades, the blades are stored in the changing device, one blade can be sent to the fixing assembly 20 through the changing device, and the fixing assembly 20 can form axial and radial limit on the received blades.
Specifically, the cutter body 10 includes a supporting sleeve 11 and a bearing sleeve 12, and the supporting sleeve 11 and the opening end of the bearing sleeve 12 are connected to each other to form the cutter body 10, and the supporting sleeve 11 is gripped in use. In order to improve the anti-slip performance of the cutter body 10, the surface of the supporting sleeve 11 may be provided with protrusions or grooves. As shown in fig. 4, two knob holes 111 are formed at one end of the support sleeve 11 away from the bearing sleeve 12, two knob grooves 112 are formed around the two knob holes 111, and four knob grooves 112 are parallel.
As shown in fig. 5, an end of the bearing sleeve 12, which is far away from the supporting sleeve 11, is provided with a clamping block groove 121, the clamping block groove 121 is located in the middle of the end face of the bearing sleeve 12, the end face of the bearing sleeve 12 is equally divided into two parts, the bearing sleeve 12 is provided with a middle hole 1211 along the axial direction thereof, and an opening of one end of the middle hole 1211 is located at the bottom of the clamping block groove 121. The bottom of the clamping block groove 121 is provided with two limiting grooves 122, and the two limiting grooves 122 are respectively positioned at two sides of the middle hole 1211 along the direction of the clamping block groove 121. The bearing sleeve 12 has two positioning grooves 123 on its side axially aligned with the two ends of the clamp block groove 121.
As can be seen in fig. 2, 3, 6 and 7, the fixing assembly 20 includes a cover plate 21 and two clamping blocks 22, the cover plate 21 is disposed at one end of the bearing sleeve 12 away from the supporting sleeve 11, and the cover plate 21 is fixedly connected with the bearing sleeve 12. Two clamping blocks 22 are arranged between the cover plate 21 and the bearing sleeve 12, and the two clamping blocks 22 can slide relative to the bearing sleeve 12. The two clamping blocks 22 can form or release the axial limit of the cutting edge during the sliding process.
Specifically, a cover plate fixing hole 211 is formed in the middle of the cover plate 21, and the cover plate fixing hole 211 is a regular hexagonal hole. One end of the clamping block 22 is provided with a claw 221, the other end is provided with a buckle 223, and the middle part of the clamping block 22 is provided with a limiting block 222. The two claws 221 of the two clamping blocks 22 are oppositely arranged in the clamping block grooves 121, the two limiting blocks 222 are respectively inserted into the two limiting grooves 122, and the two buckles 223 are respectively aligned with the two positioning grooves 123. The sliding range of the faster 22 relative to the bearing sleeve 12 is the moving range of the limiting block 222 in the limiting groove 122. When the buckle 223 is engaged with the positioning groove 123, the clamping block 22 cannot slide. And when the two buckles 223 are respectively engaged with the two positioning slots 123, the two jaws 221 contact to form a jaw hole.
As shown in fig. 3 and 8, the replacement assembly 30 includes two blade storage cylinders 31, two knobs 32, and four blades 33, wherein two blade storage cylinders 31 are located inside the support sleeve 11, and two blade storage cylinders 31 are rotatable inside the support sleeve 11. The two blade storage cylinders 31 and the two knobs 32 constitute a replacement device. Specifically, one end of the blade storage cylinder 31 has a rotation shaft 311, the other end is connected to the knob 32, the rotation shaft 311 is inserted into the bearing sleeve 12, and the knob 32 is connected to the blade storage cylinder 31 through the knob hole 111. The blade storage cylinder 31 can be operated to rotate by the knob 32. The blade storage cylinder 31 has two parallel blade holes 312, and the blades 33 are stored in the blade holes 312. By rotating the blade storage cylinder 31, one of the blade holes 312 can be aligned with the middle hole 1211, and the blade 33 in the blade hole 312 can enter the stationary assembly 20 through the middle hole 1211.
As shown in fig. 9, the knob 32 includes a knob head 321, two positioning blocks 322, and a connector 323. The connecting head 323 is connected with the blade storage cylinder 31, and may take the form of threads or the like. The knob head 321 and the two positioning blocks 322 are located outside the supporting sleeve 11, the two positioning holes 322 are located at one end of the knob head 321 near the connecting head 323, and the two positioning blocks 322 correspond to the two knob grooves 112 in position. By the cooperation of the two positioning blocks 322 and the two knob grooves 112, a user can precisely operate the blade hole 312 of the blade storage cylinder 31 to be aligned with the middle hole 1211 by operating the knob head 321 without viewing the inside of the support sleeve 11. Specifically, after the knob 32 is rotated to align the two positioning blocks 322 with the two knob grooves 112, the knob 32 is pushed, and the positioning blocks 322 are inserted into the knob grooves 112, so that one blade hole 312 can be defined to align with the middle hole 1211, thereby realizing replacement of the blade and recovery after use.
As shown in fig. 10, the blade 33 includes a cutter head 331, a radial fixing portion 332, an axial fixing portion 333, and a stop ring 334, which are sequentially arranged. The cutter head 331 has a blade at one end and the radial fixing portion 332 at the other end, the radial fixing portion 332 is of a regular hexagonal cylindrical shape, the axial fixing portion 333 is of a regular hexagonal cylindrical shape, the axial diameter of the axial fixing portion 333 is smaller than that of the radial fixing portion 332, the stop ring 334 is of a cylindrical shape, and the axial diameter of the stop ring 334 is larger than that of the radial fixing portion 332. The radial fixing portion 332 corresponds to the shape and the size of the cover plate fixing hole 211, the axial diameter of the radial fixing portion 332 is slightly smaller than the aperture of the cover plate fixing hole 211, and the axial diameter of the radial fixing portion 332 is larger than the aperture of the claw hole. The axial fixing portion 333 corresponds to the shape and the size of the claw hole, and the axial diameter of the axial fixing portion 333 is slightly smaller than the aperture of the claw hole. The diameter of the stop ring 334 is greater than the maximum distance between the two jaws 221 to prevent the blade from backing out.
In use, the screwdriver with replaceable blades inside the screwdriver body is first aligned with the central hole 1211 by rotating one of the knobs 32 so that the blade hole 312 of its corresponding blade storage barrel 31 is aligned with the central hole 1211; then placing the screwdriver with the replaceable blade inside the screwdriver body in a mode that the bearing sleeve 12 is arranged below, the supporting sleeve 11 is arranged above, the blade 33 in the blade hole 312 slides down under the action of gravity until the stop ring 334 is blocked by the two clamping jaws 221, the radial fixing part 332 is clamped into the cover plate fixing hole 211, and the cover plate fixing hole 211 radially fixes the blade 33 through the radial fixing part 332; then, the two clamping blocks 22 are pressed, so that the buckles 223 of the two clamping blocks 22 are respectively clamped into the two positioning grooves 123, at this time, the two clamping claws 221 form clamping claw holes, the two clamping claws 221 limit the axial fixing parts 333, and the axial diameters of the radial fixing parts 332 and the stop rings 334 are larger than the diameters of the clamping claw holes, so that the cutting edge 33 cannot move in the axial direction.
When the blade is required to be stored or replaced after use, the blade 33 can be retracted into the blade hole 312 by contacting the two buckles 223 with the two positioning grooves 123 and placing the screwdriver with the blade capable of being replaced in the screwdriver body in a mode that the supporting sleeve 11 is arranged below and the bearing sleeve 12 is arranged above, and the blade storage barrel 31 can be rotated to store the blade or rotate to the next blade required to be used.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The screwdriver capable of replacing the cutting edge in the cutter body is characterized by comprising the cutter body, a fixing component and a replacing component, wherein the fixing component is installed in combination with the cutter body, the replacing component comprises a replacing device and a plurality of cutting edges, the cutting edges are stored in the replacing device, the replacing device transmits one cutting edge to the fixing component, and the fixing component forms axial and radial limiting for the cutting edge; the cutter body comprises a supporting sleeve and a bearing sleeve, and the supporting sleeve and the opening end of the bearing sleeve are connected with each other; the bearing sleeve is provided with a clamping block groove at one end far away from the supporting sleeve, the clamping block groove is positioned in the middle of the end face of the bearing sleeve, the bearing sleeve is provided with a middle hole along the middle shaft, one end of the middle hole is opened and positioned at the bottom of the clamping block groove, the bottom of the clamping block groove is provided with two limit grooves, the two limit grooves are respectively positioned at two sides of the middle hole, and two positioning grooves are arranged at the positions of the side part of the bearing sleeve axially aligned with the two end parts of the clamping block groove; the fixing assembly comprises a cover plate and two clamping blocks, the cover plate is arranged at one end, far away from the supporting sleeve, of the bearing sleeve and is fixedly connected with the bearing sleeve, and a cover plate fixing hole is formed in the middle of the cover plate; one end of the clamping block is provided with a claw, the other end of the clamping block is provided with a buckle, a limiting block is arranged in the middle of the clamping block, the two claws of the two clamping blocks are oppositely arranged in the clamping block groove, the two limiting blocks are respectively inserted into the two limiting grooves, the two buckles are respectively aligned with the two positioning grooves, and when the two buckles are respectively connected with the two positioning grooves in a clamping way, the two claws are contacted to form a claw hole; the replacing assembly comprises two blade storage barrels, two knobs and four blades, wherein the two blade storage barrels are rotatably arranged in the supporting sleeve, one end of each blade storage barrel is provided with a rotating shaft, the other end of each blade storage barrel is connected with the knob, the rotating shaft is inserted into the bearing sleeve, the knob is positioned outside the supporting sleeve, each blade storage barrel is provided with two parallel blade holes, the blades are stored in the blade holes, the blade storage barrels are rotated, and one blade hole is aligned with the middle hole.
2. The screwdriver with the blade replaceable inside the screwdriver body according to claim 1, wherein two knob holes are formed in one end, far away from the bearing sleeve, of the supporting sleeve, two knob grooves are formed around the two knob holes respectively, four knob grooves are parallel, and the knob is connected with the blade storage barrel through the knob holes.
3. The screwdriver with the blade replaceable inside the screwdriver body according to claim 2, wherein the knob comprises a knob head, two positioning blocks and a connector, the connector is connected with the blade storage barrel, the two positioning holes are positioned at one end of the knob head close to the connector, and the two positioning blocks correspond to the two knob grooves.
4. The screwdriver with the blade replaceable inside the screwdriver body according to claim 1, wherein the blade comprises a screwdriver head, a radial fixing part, an axial fixing part and a stop ring which are sequentially arranged, the shape and the size of the radial fixing part are the same as those of the cover plate fixing hole, the shaft diameter of the radial fixing part is larger than the aperture of the jaw hole, the shape and the size of the axial fixing part are the same as those of the jaw hole, and the shaft diameter of the stop ring is larger than the maximum distance between two jaws.
5. The screwdriver with replaceable blades inside the screwdriver body according to claim 4, wherein the cover plate fixing holes are regular hexagonal holes, and the radial fixing portions are regular hexagonal columns.
6. The screwdriver with replaceable blades inside the screwdriver body according to claim 4, wherein the jaw holes are regular hexagonal holes, and the axial fixing portion is a regular hexagonal column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910516769.1A CN110091276B (en) | 2019-06-14 | 2019-06-14 | Screwdriver capable of replacing blade inside cutter body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910516769.1A CN110091276B (en) | 2019-06-14 | 2019-06-14 | Screwdriver capable of replacing blade inside cutter body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110091276A CN110091276A (en) | 2019-08-06 |
| CN110091276B true CN110091276B (en) | 2023-11-07 |
Family
ID=67450955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910516769.1A Active CN110091276B (en) | 2019-06-14 | 2019-06-14 | Screwdriver capable of replacing blade inside cutter body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110091276B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114654409B (en) * | 2022-05-23 | 2022-08-23 | 南通嘉伦汽车科技有限公司 | High-applicability thread installer for assembling automobile parts |
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| US6502484B2 (en) * | 2001-01-22 | 2003-01-07 | Lee Pao-Hsi | Screwdriver with easily replaceable bits |
| TW489703U (en) * | 2001-11-02 | 2002-06-01 | Mei-Huei Jiang | Internal concealed type revolving and exchangeable screwdriver |
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| JP2009291931A (en) * | 2008-06-05 | 2009-12-17 | Yamashin Seikyo Kk | Bit holding device |
| KR101532235B1 (en) * | 2014-03-31 | 2015-07-06 | 박보림 | The portable folding compact screwdriver |
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| CN106891291A (en) * | 2017-04-13 | 2017-06-27 | 苏州市职业大学 | A kind of universal screwdriver |
| CN107009307A (en) * | 2017-06-02 | 2017-08-04 | 安陆市万众创新智能科技有限公司 | A kind of multifunctional screw driver |
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| CN208375148U (en) * | 2018-04-27 | 2019-01-15 | 付毅郎子 | A kind of integrated portable screwdriver of interchangeable bit |
| CN211029795U (en) * | 2019-06-14 | 2020-07-17 | 苏州市职业大学 | Screwdriver with replaceable blade inside cutter body |
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| Publication number | Publication date |
|---|---|
| CN110091276A (en) | 2019-08-06 |
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