CN207239310U - A kind of multifunctional saw quick change construction - Google Patents
A kind of multifunctional saw quick change construction Download PDFInfo
- Publication number
- CN207239310U CN207239310U CN201720986473.2U CN201720986473U CN207239310U CN 207239310 U CN207239310 U CN 207239310U CN 201720986473 U CN201720986473 U CN 201720986473U CN 207239310 U CN207239310 U CN 207239310U
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- China
- Prior art keywords
- output shaft
- quick change
- compression spring
- movable support
- straight pin
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Abstract
It the utility model is related to a kind of multifunctional saw quick change construction and quick change method, it is characterised in that：It includes head capsule, output shaft and fast replacing device, fast replacing device is to pull button by rotating quick change, then eccentric block, motion bar, small column compression spring and movable support are driven successively, the second straight pin of movable support lower part is set to be moved down in the guide groove of locking foot, promote locking foot to rotate and close up around the 3rd straight pin, exert oneself upwards after loading onto saw blade, locking foot will open, saw blade is locked, realizes saw blade quick-replaceable.The multifunctional saw quick change construction that the utility model is related to only needs the purpose pulled button by stirring the quick change on the upside of head capsule and can be achieved with dismantling and replace saw blade, and easy to operate without other auxiliary tools, speed is fast.
Description
Technical field
The utility model belongs to mechanical equipment technical field, is related to a kind of work head and machine for replaceable head electric tool
Body quick separating or the detaching structure of loading, more particularly to a kind of multifunctional saw quick change construction.
Background technology
Multifunctional saw currently on the market, the overwhelming majority all use pressing plate and soket head cap screw, and the multifunctional saw saw blade is more
Or change operation with specific purpose tool fasten or unscrew, or directly with hand rotate rotational fastener circle, this multifunctional saw structure and
Substitute mode, due to no locking safeguard construction, easily loosens in saw blade rotary work, and hidden danger is brought to safe handling, and
And fastening or disassembling section trouble, do not fasten sometimes, dismounting is not got off again sometimes.Pulled it is also desirable to be equipped with a hexagonal
Hand, it is necessary to carry, and have the defects of easy to be lost at any time.
To solve the above-mentioned problems, application publication number is the Chinese invention patent application of CN103317190A《Quick-clamping
The multifunctional saw cartridge device of saw blade》A kind of structure is disclosed, its main shaft is the contact jaw of hollow tube-shape, front-end of spindle and saw blade
The circumferentially distributed positioning convex platform in face shrinkage pool corresponding with saw blade, which is formed, to be coordinated, and is played the role of saw blade and is drawn relative to main shaft anti-rotation, one
Bar is arranged in main shaft, and pull rod front end is equipped with the major diameter convex portion that diameter is more than in the middle part of pull rod, the major diameter convex portion and pressing plate corresponding female
Platform, which coordinates, compresses saw blade, and pull rod is socketed with ejector sleeve on rear side of major diameter convex portion, and saw blade is just positioned at outside positioning convex platform and ejector sleeve
Being equipped with disc, in main shaft makes pull rod move backward so that pressing plate coordinates the saw blade for compressing saw blade elasticity to press with major diameter convex portion
Tight mechanism, head head are equipped with a pressure drag link mechanism at pull rod rear and depress pull rod, and be equipped with main shaft makes when replacing saw blade
The pressing plate elastic ejection structure of pressing plate pop-up.Although said structure realizes the Fast Installation of saw blade in dismounting, still, due to it
Quick change process needs to eject compression spring and reseting pressuring spring coordinates and could realize jointly, failure easy to operate after long-time service, to use
Person brings some inconvenience.
Therefore, for the quick change construction of current multifunctional saw, improved up for further.
The content of the invention
In order to overcome drawbacks described above and expand product use scope, product use feeling is improved, the utility model provides one
Kind multifunctional saw quick change construction, realizes the quick-replaceable of saw blade.
For the attainment of one's purpose, technical solution provided by the utility model is：
A kind of multifunctional saw quick change construction that the utility model is related to, it includes head capsule, output shaft and saw blade, and described is defeated
Shaft is hollow structure, and output shaft is located inside head capsule, and the saw blade is located at the bottom of output shaft, is detachably connected with output shaft
Connect, it is characterised in that：It further includes fast replacing device, and the fast replacing device pulls button, eccentric block, motion bar, roundlet including quick change
Column compression spring, plastic support block, movable support, cylindrical compression spring, plastics fixed seat, two panels locking foot and locating ring, institute
The quick change stated pulls button and eccentric block cooperates, and is connected by the top of the first straight pin and head capsule；
The motion bar, small column compression spring, plastic support block, movable support, cylindrical compression spring are each provided at defeated
Shaft hollow space, the top of motion bar and the contact of eccentric block, small column compression spring are located at the bottom of motion bar,
The top of small column compression spring is contacted with the bottom of motion bar, the groove at the top of plastic support block insertion movable support
Interior, the bottom of small column compression spring is contacted with plastic support block, and the outer ring at the top of the movable support is equipped with raised line, plastics
Fixed seat is located at movable support bottom outer ring, and plastics fixed seat is fixed with output shaft bottom inner ring, and cylindrical compression spring is sleeved on modeling
Expect the outside of supporting block, raised line lower surface of the apical support at the top of movable support, bottom is supported on the upper table of plastics fixed seat
Face；
The two panels locking foot cooperates, and two panels locking foot top is equipped with guide groove, and lower part is equipped with limit hole, leads
There are inside angle of inclination, the bottom of guide groove from top to bottom to set hook portion and be set as position-limit mechanism, movable support bottom for groove
There is the second straight pin, for second straight pin through the guide groove of two panels locking foot, output shaft bottom is equipped with the 3rd straight pin, and the 3rd
Straight pin sequentially passes through the limit hole of plastics fixed seat and two panels locking foot；
The bottom cylindrical of the output shaft is arranged with locating ring, and the inner wall of locating ring is equipped with some first screens, described
Saw blade upper surface be equipped with boss, the center of boss is equipped with card slot, and the outer ring of boss is equipped with the second screens, and card slot is matched somebody with somebody with locking foot
Close, the second screens is identical with the first screens quantity and cooperates.
The effect of the plastics fixed seat is the straight pin for entangling two panels locking foot and connecting two panels locking foot, prevents from contracting
Tight foot double swerve；The effect of the locating ring is fixed saw blade, prevents saw blade from coming off in use.
Preferably, deep groove ball bearing, shift fork and needle bearing, the output are equipped between the head capsule and output shaft
Axis is divided into three sections of the upper, middle and lower that outside diameter becomes larger step by step, and deep groove ball bearing is located on the epimere outer ring of output shaft, and fork is located at output
On the stage casing outer ring of axis, needle bearing is located on the hypomere outer ring of output shaft.The effect of deep groove ball bearing and needle bearing is
Prevent from producing when output shaft from rotating and rock, the effect of fork is the speed for controlling output shaft to rotate.
Preferably, the quantity of first screens and the second screens is 6,8,10 or 12.
Preferably, compression spring mounting hole is equipped with the top of the bottom of the motion bar and movable support, it is described
Small column compression spring upper and lower ends be inserted into compression spring mounting hole in, contribute to small column compression spring be in all the time
Axial location.
Preferably, the lower section of the needle bearing is equipped with sealing ring, the inner ring of sealing ring and outer ring respectively with output shaft
Outer wall and head capsule inner wall connection.
Preferably, the deep groove ball bearing is fixed by two clamp springs, the upper end of deep groove ball bearing by clamp spring with it is defeated
The external linkage of shaft, lower end are connected by the inner wall of clamp spring and head capsule.
Preferably, the plastics are fixed and taken equipped with two symmetrical straight pin mounting holes, the 3rd straight pin
Both ends be inserted into respectively in two straight pin mounting holes.
A kind of quick change method using the above-mentioned multifunctional saw quick change construction of right, it is characterised in that：It comprises the following steps：
(1) using the first straight pin as center of rotation, stir quick change and pull button, quick change pulls cingulum and moves eccentric block rotation；
(2) due to the presence of eccentricity, the elastic force of small column compression spring and cylindrical compression spring is offset, motion bar is past
Push, the movable support of drive moves down；
(3) movable support drives the second straight pin of movable support lower part to be moved downward to the hook portion of guide groove, due to
For guide groove from top to bottom there are inside inclination angle, the second straight pin applies the effect of transverse direction to locking foot during moving down
Power, makes locking foot close up after the rotation of the 3rd straight pin；
(4) rotation quick change pulls button to initial position, the hook portion of guide groove and plays position-limiting action, meanwhile, plastic support block
Spring compression is compressed on locking foot by small column, movable support can not be sprung back, and locking foot keeps continuing closed configuration.
(5) saw blade is put into locking underfooting side, and applies an active force upwards, promote the second straight pin to move upwards,
The elastic force of small column compression spring is offset, under the action of cylindrical compression spring, movable support returns to initial position, locking foot lock
Tight saw blade.
Using technical solution provided by the utility model, compared with prior art, have the advantages that：
The multifunctional saw quick change construction that the utility model is related to only needs to pull button with regard to energy by stirring the quick change on the upside of head capsule
Realize dismounting and replace the purpose of saw blade, easy to operate without other auxiliary tools, speed is fast.
Brief description of the drawings
Fig. 1 is the utility model multifunctional saw quick change construction initial state schematic diagram；
Fig. 2 is the schematic diagram during the utility model multifunctional saw quick change construction quick change；
Fig. 3 is the utility model multifunctional saw quick change construction exploded view；
Fig. 4 is the utility model locking leg structure schematic diagram；
Fig. 5 is the schematic diagram under the utility model locking foot open configuration；
Fig. 6 is the schematic diagram under the utility model locking foot closed configuration；
Fig. 7 is force analysis figure of the utility model saw blade when locking foot restores to the original state after installation is complete；
Fig. 8 is the utility model quick change multifunctional saw locking saw blade schematic diagram；
Fig. 9 is the connecting node schematic diagram of the utility model locating ring and saw blade.
Mark explanation in schematic diagram：Quick change pulls button 1, eccentric block 2, clamp spring 3, the first straight pin 4, head capsule 5, deep-groove ball axis
Hold 6, clamp spring 7, shift fork 8, needle bearing 9, sealing ring 10, output shaft 11, motion bar 12, small column compression spring 13, plastics branch
Bracer 14, movable support 15, the second straight pin 16, cylindrical compression spring 17, the 3rd straight pin 18, plastics fixed seat 19, locking
Foot 20, locating ring 21, saw blade 22, guide groove 23, the first screens 24, boss 25, card slot 26, the second screens 27.
Embodiment
To further appreciate that the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments,
The following examples illustrate the utility model, but is not intended to limit the scope of the present invention.
With reference to shown in Fig. 1, the multifunctional saw quick change construction that the present embodiment is related to pulls button 1, eccentric block 2, clamp spring including quick change
3rd, the first straight pin 4, head capsule 5, deep groove ball bearing 6, clamp spring 7, shift fork 8, needle bearing 9, sealing ring 10, output shaft 11, activity
Bar 12, small column compression spring 13, plastic support block 14, movable support 15, the second straight pin 16, cylindrical compression spring 17, the
Three straight pins 18, plastics fixed seat 19, locking foot 20, locating ring 21 and saw blade 22.The above-mentioned top of head capsule 5 uses the first straight pin
4 connection quick changes pull button 1 and eccentric block 2, and deep groove ball bearing 6, fork 8 are separately installed with from top to bottom in the cavity of the inner side of head capsule 5
With needle bearing 9, wherein deep groove ball bearing 6 is connected by clamp spring 7 with 5 inner wall of head capsule, deep groove ball bearing 6, fork 8 and needle roller axis
The upper, middle and lower three parts that 9 inner sides connect output shaft 11 respectively again are held, wherein 11 epimere of output shaft is equipped with clamp spring mounting groove, output shaft
11 are connected by the clamp spring 3 in clamp spring mounting groove with deep groove ball bearing 6, the internal diameter point of above-mentioned deep groove ball bearing 6 and needle bearing 9
Outside diameter not than 11 two sections of output shaft is big 0.1~0.3mm, plays the role of positioning and vibration proof, and fork 8 plays adjustment
The sealing ring 10 of annular is set in the effect of 11 rotating speed of output shaft, the head capsule 5 of the downside of needle bearing 9 and the gap of output shaft 10.
With reference to shown in attached drawing 1~3, output shaft 11 is hollow structure, and the hollow position of 10 upper end of output shaft is equipped with motion bar
12, there is bellend in 12 lower end of motion bar, and the lower surface of bellend is equipped with compression spring mounting hole, 15 top of movable support
Compression spring mounting hole is correspondingly provided with, also, a mounting groove, the plastic support block 14 are equipped with compression spring mounting hole
It is inserted in the mounting groove of movable support 15 and forms an entirety, small column compression spring 13 is installed on movable support 15 and motion bar
Between 12, both ends are inserted into compression spring mounting hole respectively, can so prevent small column from compressing 13 off normal of spring.Movable support 15
Top outer ring be equipped with raised line, plastics fixed seat 19 is housed inside the endoporus of output shaft, plastics fixed seat 19 is sleeved on movable support
15 outsides, cylindrical compression spring 17 are sleeved on the outside of movable support 15, and 17 upper and lower ends of cylindrical compression spring withstand on activity respectively
Below the raised line at the top of stent 15 and plastics fixed seat 19 top, symmetrically set on the side wall of the plastics fixed seat 19
Put two straight pin mounting holes.
With reference to shown in attached drawing 4, two panels locking foot 20 cooperates, and 20 top of two panels locking foot is equipped with guide groove
23, lower part is equipped with limit hole, and there are inside angle of inclination, the bottom of guide groove 23 from top to bottom to set hook portion for guide groove, makees
To lock the position-limit mechanism of foot, the bottom of movable support is equipped with the second straight pin 16, and the second straight pin 16 passes through guide groove 23, and can
Slided along guide groove 23.The bottom of the output shaft 11 is equipped with the 3rd straight pin 18, and the 3rd straight pin 18 sequentially passes through plastics
The limit hole of fixed seat 19 and two panels locking foot 20, the aperture of limit hole have to be larger than the diameter of the 3rd straight pin 18, two mortice locks
Tight foot 20 can be rotated with the 3rd straight pin 18 for the center of circle.
With reference to shown in attached drawing 9, the bottom outer ring of output shaft 11 is arranged with locating ring 21, and the inner wall of locating ring 21 is equipped with 8
First screens 24, corresponding, the upper surface of the saw blade 22 is equipped with boss 25, and the center of boss 25 is equipped with card slot 26,
Card slot 26 coordinates with locking foot 20, and the outer ring of boss 25 is equipped with 8 the second screens 27, and the second screens 27 is matched somebody with somebody with the first screens 24
Close, when saw blade 22 is fixed on below output shaft, locking foot 20 is opened and is stuck in card slot 26, the first screens 24 and the second screens 27
Cooperate, prevent saw blade from coming off in use.As needed, the quantity of the first screens 24 and the second screens 27 can also
It is designed to 6 or 10 or 12.
With reference to shown in attached drawing 1 or 2, multifunctional saw quick change construction mainly uses an eccentric structure, with the first straight pin 4
For center of rotation, pull the drive eccentric block 2 of button 1 with quick change and rotate.Quick change pulls button 1 and turns to position B from position A, due to eccentricity
Presence, offset small column compression spring 13 and cylindrical compression spring 17 elastic force, motion bar 11 is pressed down, the activity of drive
Stent 15 moves up and down, with reference to shown in attached drawing 5~7, when movable support 15 moves down, by straight pin 16 and locking foot 20
Guide groove 23, make locking foot 20 around straight pin 18 rotation after close up；Rotation quick change pulls button 1 and returns to position A, activity branch from position B
Frame 15 will not be sprung back at once, be continually maintained in the bottom of guide groove, because 20 bottom of locking foot is equipped with a crotch as position restrainer
Structure, prevent movable support 15 quick change pull buckle return to position A when, movable support 15 does not move upwards from the bottom of guide groove, so
Foot 20 is locked at this time to keep continuing closed configuration；Meanwhile plastic support block 14 compresses spring 13 by small column and is pressed on locking
On foot 20, the effect for preventing that locking foot 20 from opening automatically is also functioned to.When installing saw blade, it is necessary first to which saw blade 22 is placed on one
In a plane, by the work head of this quick change construction of design, saw blade can be locked by being pressed onto saw blade 22；User is by this quick change construction
Work head be pressed onto on saw blade, equal to the active force of a f2 is applied with to locking foot 20, the active force of f2 promotes to lock foot 20
Rotate, offset the elastic force f3 of small column compression spring 13, recover the effect of cylindrical compression spring 17, movable support 15 returns to original
Position, locking foot open locking saw blade 22, and the multifunctional saw of saw blade 22 is as shown in Figure 8.
The quick change method of the present embodiment multifunctional saw quick change construction includes：
Step 1：It is center of rotation with the first straight pin 4 with reference to shown in attached drawing 1, stirs quick change and pull button 1, quick change pulls button 1
B points are moved to from A points, quick change is pulled the drive eccentric block 2 of button 1 and rotated；
Step 2：Due to the presence of eccentricity, the elastic force of small column compression spring 13 and cylindrical compression spring 17 is offset, will
Motion bar 12 presses down, and forms a downward active force f1, and the movable support 15 of drive moves down；
Step 3：Movable support 15 drives the second straight pin 16 of movable support lower part to be moved downward to the hook part of guide groove
Point, since guide groove 23 is from top to bottom there are inside inclination angle, the second straight pin applies horizontal to locking foot during moving down
To active force, locking foot is closed up after the rotation of the 3rd straight pin 18, the state of slave attached drawing 5 for locking foot 20 at this time is changed into
The state of attached drawing 6；
Step 4：Rotate quick change and pull button 1 to initial position, i.e., go to A points from B points, the hook portion of guide groove plays spacing
Effect, meanwhile, plastic support block 14 compresses spring 13 by small column and is pressed on the active force f3 locked on foot, movable support 15
It can not spring back, locking foot 20 keeps continuing the state of closed configuration, i.e. attached drawing 6；
Step 5：With reference to shown in attached drawing 7, saw blade 22 is put into 20 lower section of locking foot, and applies an active force f2 upwards,
Promote the second straight pin 16 to move upwards, the elastic force f3 of small column compression spring 13 is offset, in the effect of cylindrical compression spring 17
Under, movable support 15 returns to initial position, locking foot locking saw blade 22.
Schematically the utility model and embodiments thereof are described above, this describes no restricted, attached drawing
Shown in be also the utility model one of embodiment, actual structure is not limited thereto.So this area is general
Logical technical staff is enlightened by it, without deviating from the purpose of the present invention, is not inventively designed with being somebody's turn to do
The similar frame mode of technical solution and embodiment, all should belong to the protection range of the utility model.
Claims (7)
1. a kind of multifunctional saw quick change construction, it includes head capsule, output shaft and saw blade, and the output shaft is hollow structure, defeated
Shaft is located inside head capsule, and the saw blade is located at the bottom of output shaft, is detachably connected with output shaft, it is characterised in that：Its
Fast replacing device is further included, the fast replacing device pulls button, eccentric block, motion bar, small column compression spring, plastics branch including quick change
Bracer, movable support, cylindrical compression spring, plastics fixed seat, two panels locking foot and locating ring, the quick change pull button and bias
Block cooperates, and is connected by the top of the first straight pin and head capsule；
The motion bar, small column compression spring, plastic support block, movable support, cylindrical compression spring are each provided at output shaft
Hollow space, the top of motion bar and the contact of eccentric block, small column compression spring are located at the bottom of motion bar, roundlet
The top of column compression spring is contacted with the bottom of motion bar, small in the groove at the top of plastic support block insertion movable support
The bottom of cylindrical compression spring is contacted with plastic support block, and the outer ring at the top of the movable support is equipped with raised line, and plastics are fixed
Seat is located at movable support bottom outer ring, and plastics fixed seat is fixed with output shaft bottom inner ring, and cylindrical compression spring is sleeved on plastics branch
The outside of bracer, raised line lower surface of the apical support at the top of movable support, bottom is supported on the upper surface of plastics fixed seat；
Described two panels locking foot cooperates, and two panels locking foot top is equipped with guide groove, and lower part is equipped with limit hole, guide groove from
For top to bottm there are inside angle of inclination, the bottom of guide groove to set hook portion as position-limit mechanism, and movable support bottom is equipped with the
Two straight pins, for second straight pin through the guide groove of two panels locking foot, output shaft bottom is equipped with the 3rd straight pin, the 3rd cylinder
Pin sequentially passes through the limit hole of plastics fixed seat and two panels locking foot；
The bottom cylindrical of the output shaft is arranged with locating ring, and the inner wall of locating ring is equipped with some first screens, the saw
Piece upper surface is equipped with boss, and the center of boss is equipped with card slot, and the outer ring of boss is equipped with the second screens, and card slot coordinates with locking foot,
Second screens is identical with the first screens quantity and cooperates.
A kind of 2. multifunctional saw quick change construction according to claim 1, it is characterised in that：The head capsule and output shaft it
Between be equipped with deep groove ball bearing, shift fork and needle bearing, the output shaft is divided into three sections of the upper, middle and lower that outside diameter becomes larger step by step, zanjon
Ball bearing is located on the epimere outer ring of output shaft, and fork is located on the stage casing outer ring of output shaft, and needle bearing is located at output shaft
On hypomere outer ring.
A kind of 3. multifunctional saw quick change construction according to claim 1, it is characterised in that：First screens and second
The quantity of screens is 6,8,10 or 12.
A kind of 4. multifunctional saw quick change construction according to claim 1, it is characterised in that：The bottom of the motion bar with
And compression spring mounting hole is equipped with the top of movable support, the upper and lower ends of small column compression spring are inserted into compression
In spring mounting hole.
A kind of 5. multifunctional saw quick change construction according to claim 2, it is characterised in that：The lower section of the needle bearing
Equipped with sealing ring, the inner ring of sealing ring and outer ring are connected with the outer wall of output shaft and the inner wall of head capsule respectively.
A kind of 6. multifunctional saw quick change construction according to claim 2, it is characterised in that：The deep groove ball bearing passes through
Two clamp springs are fixed, and by clamp spring and the external linkage of output shaft, lower end passes through clamp spring and head capsule for the upper end of deep groove ball bearing
Inner wall connects.
A kind of 7. multifunctional saw quick change construction according to claim 1, it is characterised in that：The plastics are fixed to take and set
There are two symmetrical straight pin mounting holes, the both ends of the 3rd straight pin are passed through in two straight pin mounting holes of insertion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720986473.2U CN207239310U (en) | 2017-08-08 | 2017-08-08 | A kind of multifunctional saw quick change construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720986473.2U CN207239310U (en) | 2017-08-08 | 2017-08-08 | A kind of multifunctional saw quick change construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207239310U true CN207239310U (en) | 2018-04-17 |
Family
ID=61879264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720986473.2U Withdrawn - After Issue CN207239310U (en) | 2017-08-08 | 2017-08-08 | A kind of multifunctional saw quick change construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207239310U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107309492A (en) * | 2017-08-08 | 2017-11-03 | 浙江金美电动工具有限公司 | A kind of multifunctional saw quick change construction and quick change method |
| WO2023087615A1 (en) * | 2021-11-17 | 2023-05-25 | 浙江金美电动工具有限公司 | Saw blade quick-replacement structure of electric tool and saw blade quick-replacement method |
-
2017
- 2017-08-08 CN CN201720986473.2U patent/CN207239310U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107309492A (en) * | 2017-08-08 | 2017-11-03 | 浙江金美电动工具有限公司 | A kind of multifunctional saw quick change construction and quick change method |
| WO2019029175A1 (en) * | 2017-08-08 | 2019-02-14 | 浙江金美电动工具有限公司 | Quick-change structure of multi-functional saw and quick change method |
| CN107309492B (en) * | 2017-08-08 | 2023-08-29 | 浙江金美电动工具有限公司 | Multifunctional saw quick-change structure and quick-change method |
| WO2023087615A1 (en) * | 2021-11-17 | 2023-05-25 | 浙江金美电动工具有限公司 | Saw blade quick-replacement structure of electric tool and saw blade quick-replacement method |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180417 Effective date of abandoning: 20230829 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20180417 Effective date of abandoning: 20230829 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |