CN104722839B - Amplitude modulation safety saw - Google Patents
Amplitude modulation safety saw Download PDFInfo
- Publication number
- CN104722839B CN104722839B CN201310728546.4A CN201310728546A CN104722839B CN 104722839 B CN104722839 B CN 104722839B CN 201310728546 A CN201310728546 A CN 201310728546A CN 104722839 B CN104722839 B CN 104722839B
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- saw
- amplitude
- coverboard
- screw
- axle
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Abstract
The invention discloses a kind of amplitude modulation safety saw for emergency relief, is made up of housing, drive mechanism, amplitude regulating mechanism, saw blade fixture and scalable saw bow.In drive mechanism, motor drives cam pin to be used as crank-motion by toothed belt transmission and gear drive.Cam pin, slide block A, chute, short sliding axle, short slip bracing strut form crank double-slider mechanism, drive short sliding axle to make straight reciprocating motion by cam pin.Amplitude regulating mechanism can pass to long sliding axle after the motion amplitude of short sliding axle is zoomed in or out by adjusting the position of amplitude adjusted axle.Saw blade is installed by saw blade clamping apparatus in one end of long sliding axle, drives saw blade linear reciprocating motion.Scalable saw bow can adjust collapsing length according to application scenario, and good guiding and support are formed to saw blade by pulley.
Description
Technical field
The present invention relates to a kind of safety saw, particularly for the amplitude modulation safety saw of rescue, belongs to daily life accident thing
Therefore, traffic accident, when earthquake trapped personnel emergency relief instrument.
Background technology
In the contingencies such as machine operational error in daily life, traffic accident, often there is the nipped situation of human body in Jing,
Current rescue mode majority is, using cutting tools such as cutting machines, will to clamp the cut-out of the objects such as metal, the concrete of human body, make
Obtain nipped limbs to be freed.General jammed human body has contrafluxion deformation, swelling, and hard thing is connect with human body
Touch tight, needing can not possibly be with the presence of gap between the object and skin of cutting, and this is just determined during hard thing is cut,
Cutting tool will inevitably contact human body skin, but the tool motion speed and amplitude of cutting tool is all very big at present, when
Tool contact will necessarily be damaged to after human body.Therefore, for prevent the instrument used in rescue operations to human body cause wound
Evil, with caution, job schedule is slow, and efficiency is low for emergency crew operations extreme care.
In rescue, the most important time for being just to try to shorten rescue, will also ensure by the personal safety of rescuer.
In the case of this, a kind of safety cutting saw is designed, the cutting task to objects such as metal, concrete can have both been quickly completed, and
Timely and effectively can ensure to be rescued the personal safety of people, while mitigate the pain of saved person and the rescue pressure of fire fighter, it is right
Rescue works under such fortuitous event have great importance.
The cutter tooth motion mode of conventional sawtooth class cutting tool has dead axle circular-rotation, dead axle circle swing, horizontal linear
The modes such as motion, but whether be which kind of mode, what their incision principle was just as, i.e., by cutter tooth and cut object
Between carry out relative motion under a certain pressure so that cut body surface is cut, so repeatedly, until be cut object
It is cut off completely.
During cutting metal, the material such as concrete, due to material deform it is very little, can compared with the displacement of cutter tooth
To ignore, under a certain pressure, body surface is directly peeled off by sawtooth cutting with chip or clastic；In cutting soft-body
During body (such as human body, medicated clothing etc.), when cutter tooth touches soft objects surface, when cutter tooth motion amplitude it is less, soft objects
Surface is moved with cutter tooth, and less protuberance is formed before sawtooth, does not have between the body surface contacted because of cutter tooth
Relative friction, body surface are not cut, and as cutter tooth continues to move, body surface is also moved with cutter tooth, object
The deformation on surface increases therewith, and when its limit is deformed more than, soft objects surface can not continue to move with cutter tooth, the two it
Between produce relative motion and cut.
Therefore, in working angles, if the motion amplitude of cutter tooth cutter tooth cutting edge and is connect less than the limit of skin deformation
It is not in relative cutting movement between tactile skin surface.If the unidirectional small movements of simple cutter tooth, although ensure that not
Meeting injured skin, but the objects such as metal cannot effectively be cut, it is to solve this problem, cutter tooth can be allowed to carry out quick past
It is multiple to move, it is not cut so as to realize in cutting process skin surface only to deform, but the objects such as metal can be entered during this
Row cutting.
Can ensure human-body safety although making cutter and cutting being carried out with less reciprocation amplitude, cutting efficiency is relatively low,
If the motion amplitude of cutter is adjustable, tool motion amplitude of different sizes is selected according to distance of the cutting position apart from human body,
Efficiency and the safety of rescue can be taken into account.
The content of the invention
The purpose of the present invention, is to provide a kind of amplitude modulation safety saw for emergency relief, can protected using the safety saw
Card is quickly sued and laboured in the case of being rescued the personal safety of people, so as to mitigate the pain of saved person and the rescue pressure of fire fighter
Power.
The object of the present invention is achieved like this：A kind of amplitude modulation safety saw, including housing, drive mechanism, amplitude adjusted
Mechanism, five part of saw blade fixture and scalable saw bow.
Described housing includes left housing plate, right coverboard, upper coverboard, lower coverboard, front coverboard, rear coverboard and handle, left housing plate
It is provided with right coverboard and accommodates the chute that axle is reconciled with fixed amplitude.
The electric machine support of described drive mechanism, the short slip bracing strut of gear bracing strut and amplitude regulating mechanism, length
Slip bracing strut is fixed on left housing plate and right coverboard by screw；In drive mechanism, using synchronous pulley and Timing Belt by motor
The rotation of main shaft passes to pinion shaft, and the gear parts of pinion shaft are engaged with gear wheel, and bearing pin axle is fixed with gear wheel
Seat, cam pin are assemblied on axis pin base, and cam pin and are provided with slide block A.
In described amplitude regulating mechanism, chute, the two ends of short sliding axle and short sliding axle are installed on short sliding axle
The circular hole of frame is engaged, and it is double that axis pin base, cam pin, slide block A, chute, short sliding axle and short slip bracing strut define crank
Slide block mechanism, in motor rotation process, short sliding axle carries out linear reciprocating motion；Straight pin and cunning are installed in the middle part of long sliding axle
Block B, the column part at two ends and long sliding axle support assorted；Fork-shaped fork one end is connected with short sliding axle by straight pin, separately
The slotted section of one end is coordinated with slide block B；The position being located between short sliding axle and long sliding axle in fork-shaped fork is provided with width
Degree adjustment axis, install on amplitude adjusted axle with fork-shaped fork U-lag to the slide block C for coordinating, and slide block C is positioned by sleeve, amplitude
Adjustment axis are securable to the optional position of left housing plate and the opened chute of right coverboard by briquetting and wing nut；By adjusting amplitude
The position of adjustment axis, is transmitted to long sliding axle after zoom in or out by the straight-line displacement of short sliding axle, real
Existing amplitude adjustment.
In described saw blade fixture, branch sleeve is connected with one end of long sliding axle, and by straight pin in connection
Right briquetting, left briquetting are installed in sleeve, saw blade is installed between right briquetting and left briquetting, and pass through screw by right briquetting and left pressure
Block tenses to fix saw blade.
Described scalable saw bow includes saw bow pressing plate, saw bow slide bar, saw bow depression bar, pulley, screw, nut, saw bow pressure
Plate is fixed on coverboard；Saw bow slide bar can slide in the groove of saw bow pressing plate, and can be fixed on optional position by lock-screw；
Saw bow depression bar is connected with saw bow slide bar by screw；The lower end of saw bow depression bar is provided with pulley by screw, nut, and saw blade is risen
To guiding and supporting role.
The amplitude modulation safety saw of the present invention employs the technical scheme of the above, with advantages below and feature：
1st, the straight reciprocating motion amplitude of saw blade is can adjust by changing the position of adjustment axle, in cutting position away from human body
When, adjustment axle is fixed on into the upper end of left housing plate, the opened chute of right coverboard, is cut using larger motion amplitude, to carry
High cutting efficiency；When the closely position of human body is cut to, adjustment axle is fixed on into left housing plate, right coverboard opened chute
Lower end, is cut using little tool motion amplitude, to ensure personal safety；
2nd, saw blade carries out straight reciprocating motion, can be cut in small space；
3rd, telescopic saw bow can be empty in the operation of suitable cleavable site according to the size adjustment extension elongation in rescue space
Between in the case of good support and guiding are formed to saw blade.
Description of the drawings
Fig. 1 is the front appearance structure chart of amplitude modulation safety saw of the present invention.
Fig. 2 is the back appearance structure chart of amplitude modulation safety saw of the present invention.
Fig. 3 is handle installation structure figure.
Fig. 4 is the structure chart of the amplitude modulation safety saw of the present invention without housing.
Fig. 5 is the Facad structure figure of drive mechanism.
Fig. 6 is the backside structure figure of drive mechanism.
Fig. 7 is the mounting structure figure of gear wheel.
Fig. 8 is the structure chart of amplitude regulating mechanism.
Fig. 9 is the structure chart of saw blade fixture.
Figure 10 is the sectional view of saw blade fixture.
Figure 11 is the structure chart of scalable saw bow.
Specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
The present invention is a kind of amplitude modulation safety saw for emergency relief, by housing, drive mechanism, amplitude regulating mechanism,
Saw blade fixture and five part of scalable saw bow composition.
Refer to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the housing of safety saw include a coverboard left side 101, right coverboard 102, upper coverboard 103,
Lower coverboard 104, front coverboard 105 and rear coverboard 106 are constituted, wherein upper coverboard 103, lower coverboard 104, front coverboard 105, and rear coverboard
106 are connected with left housing plate 101 and right coverboard 102 by screw.Handle 107,106 He of rear coverboard are installed on rear coverboard 106
Circular hole is provided with handle 107, for the power line through motor 201.The electric machine support 202 of drive mechanism, gear bracing strut 209
Short slip bracing strut A303, short slip bracing strut B304, long slip bracing strut A308 and long sliding axle with amplitude regulating mechanism
Support B309 is fixed on left housing plate 101 and right coverboard 102 by screw.Receiving width is provided with left housing plate 101 and right coverboard 102
The chute of degree adjustment axis 313 and briquetting 316.
Fig. 5, Fig. 6 and Fig. 7 are referred to, motor 201 is fixed on electric machine support 202 by screw, is provided with motor shaft
Synchronous pulley A203, fixes back-up ring 204 by screw in motor shaft ends, for the axially position of synchronous pulley A203.Little tooth
Synchronous pulley B206 is installed on wheel shaft 208, is also provided with for synchronous pulley B206 axially positions in 208 end of pinion shaft
Back-up ring B207, Timing Belt 205 is installed between synchronous pulley A203 and synchronous pulley B206.Pinion shaft 208 and gear shaft
Connected by bearing 219 between support 209, catch A210 and catch B211 is used for the axially position of bearing 219, Large Gear Shaft
218 are connected with gear wheel 212 by bearing 220.Balancing weight 216 is installed on gear wheel 212, machine is adjusted for balanced magnitude
307 reciprocating inertia force of short sliding axle 301 and long sliding sliding axle in structure, in addition, being provided with by screw on gear wheel 212
Axis pin base 213, for setting-up eccentricity pin 214, the eccentric distance between 212 axis of cam pin 214 and gear wheel is 2.5 millimeters,
Balancing weight 216 and 213 collective effect of axis pin base realize the axially position of gear wheel 212.Slide block A215 is installed on cam pin.
Fig. 8 is referred to, the chute 302 coordinated with slide block A215, short sliding axle are installed by screw on short sliding axle 301
The column part at 301 two ends is coordinated with the circular hole of short slip bracing strut A303 and short slip bracing strut B304 respectively.Short sliding axle
301 are connected with fork-shaped fork 306 by straight pin A305.Installed by screw and tense block 312 in the end of fork-shaped fork 306.It is long
The middle part of sliding axle 307 is provided with straight pin B310, on straight pin B310 install slide block B 311, the U-lag of fork-shaped fork 306 with
Slide block B 311 coordinates.The column part at 307 two ends of long sliding axle respectively with long slip bracing strut A308 and long slip bracing strut
The circular hole of B309 coordinates.Amplitude adjusted axle 313, amplitude adjusted axle 313 are installed between short sliding axle 301 and long sliding axle 307
On slide block C314 is installed, slide block C314 is engaged with the U-lag of fork-shaped fork 306.The installation sleeve on amplitude adjusted axle 313
315, for the axially position of slide block C314, briquetting 316 and wing nut 317 are also equipped with amplitude adjusted axle 313, are tightened
Wing nut 317 so that the squared ends and briquetting 316 of amplitude adjusted axle 313 respectively with left housing plate 101 and right coverboard 102
Chute is compressed, the optional position in amplitude adjusted axle 313 being fixed on left housing plate 101, the chute of right coverboard 102.It is long to slide
One end of axle 307 is installed by saw blade fixture.
Fig. 9 and Figure 10 is referred to, saw blade fixture includes saw blade 401, branch sleeve 402, right briquetting 403, left briquetting
404th, screw 405, straight pin 406 and holding screw 407.Branch sleeve 402 is connected with long sliding axle 307 by screw thread, right pressure
Block 403 and left briquetting 404 are installed on inside branch sleeve 402 by straight pin 406.In clamping saw blade 401, by saw blade 401
Insert between right briquetting 403 and left briquetting 404, and the circular hole on saw blade 401 is aligned on right briquetting 403 and left briquetting 404
Hole, is then threaded into screw 405 and tightens, and saw blade 401 is pressed from both sides by right briquetting 403 and left briquetting 404 using the pulling force of screw 405
Tightly.
Fig. 1 and Figure 11 is referred to, described scalable saw bow includes saw bow pressing plate 501, lock-screw 502, saw bow slide bar
503rd, saw bow depression bar 504, pulley 505, screw 506 and nut 507.Saw bow pressing plate 501 is fixed on coverboard 103, saw bow slide bar
503 are arranged in the groove of saw bow pressing plate 501, and one end of saw bow slide bar 503 is connected with saw bow depression bar 504 by screw, in saw bow
The lower end of depression bar 504 passes through screw 506 and nut 507 is provided with pulley 505, is provided with groove on pulley 505.Unclamp nut 507
Afterwards, position of the adjusting screw 506 in chute, it is ensured that the groove of pulley 505 is suitably contacted with saw blade 401, realizes pulley 505
The guiding good to saw blade 401 and supporting role.Lock-screw 502 is installed on saw bow pressing plate 501, lock-screw 502 is unclamped
Afterwards, saw bow slide bar 503 can stretch in groove, can tighten lock-screw 502 behind the appropriate location needed for saw bow slide bar 503 is moved to
It is fixed.
Amplitude modulation safety saw of the present invention, after turning on the power switch, installed in the synchronous pulley of 201 output shaft of motor
A203 passes through Timing Belt 205 and synchronous pulley B206 drives pinion shaft 208 to rotate, and pinion shaft 208 drives 212 turns of gear wheel
Dynamic, gear wheel 212 is used as bent axle by the drive cam pin 214 of axis pin base 213 and is moved, in short slip bracing strut A303 and short
Under the guide effect of the circular hole of slip bracing strut B304, cam pin 214 passes through slide block A215 and chute 302 drives short sliding axle
301 move axially in reciprocal fashion.In 301 reciprocatory movement of short sliding axle, fork-shaped fork 306 is driven around width by straight pin A305
Degree adjustment axis 313 swing, while fork-shaped fork 306 passes through slide block B 311 and straight pin B310 drives long sliding axle 307 to move,
Under the guide effect of the circular hole of long slip bracing strut A308 and long slip bracing strut B309, long sliding axle 307 is also to enter along axis
Row is moved back and forth, so as to long sliding axle 307 drives 401 linear reciprocating motion of saw blade by saw blade fixture and cut.
In the present invention, according to U-lag on the chute on the left housing plate 101 and right coverboard 102 of design, fork-shaped fork 306
Each correlated parts such as length size, position of the adjustment amplitude adjusted axle 313 in chute can cause saw blade 501 reciprocal
Motion amplitude continuously adjustabe between 1～25 millimeter.The actual cutting experiments of Jing are measured, as reciprocating frequency about 20～30Hz and
When amplitude is less than 2.5 millimeters, typically human body will not be damaged during the contact skin of saw blade 401.In left housing plate 101 and right coverboard
102 chute edge engraves the reciprocating motion margin of safety of groove 2.5 millimeters of saw blade of correspondence, groove above position correspondence larger amplitude
Degree, the less margin of safety of the correspondence of position below scale, in order to carry out saw blade motion width according to cutting position in rescue operations
The setting of degree.When the motion amplitude of saw blade 401 is adjusted, wing nut 317 is unclamped first, then amplitude adjusted is promoted along chute
Axle 313 arrives desired location, and tightening wing nut 317 again fixes amplitude adjusted axle 313, that is, complete 401 motion amplitude of saw blade
Adjustment.
The amplitude modulation safety saw of the present invention, can be made into tandem product, to meet the demand of different rescue occasions, for example,
Small-sized safety saw is developed, can be used for the rescue when positions such as finger, arm are clamped by objects such as thinner reinforcing bars；For serious car
Rescue in misfortune, earthquake disaster, can be made into high-power safety saw, and customizes special saw blade, to meet the demand of rescue site.
Claims (4)
1. a kind of amplitude modulation safety saw for emergency relief, it is characterised in that：By housing, drive mechanism, amplitude regulating mechanism,
Saw blade fixture and scalable saw bow composition；
Described housing includes left housing plate, right coverboard, upper coverboard, lower coverboard, front coverboard, rear coverboard and handle, upper coverboard, lower casing
Plate, front coverboard, rear coverboard are connected with left housing plate and right coverboard by screw, and handle is screwed in rear coverboard, left housing plate and
Right coverboard is provided with the chute accommodated with fixed amplitude adjustment axis；
The electric machine support of described drive mechanism, gear bracing strut are fixed on left housing plate and right coverboard by screw；Motor is utilized
Screw is installed on electric machine support, installs synchronous pulley A, and utilizes back-up ring A axially positions, on pinion shaft on the output shaft of motor
Synchronous pulley B is installed, and Timing Belt is installed between synchronous pulley A and synchronous pulley B to positioning using back-up ring B axle；Little gear
Axle and Large Gear Shaft are installed on gear bracing strut, and bearing, gear bracing strut peace are provided between pinion shaft and gear bracing strut
Equipped with catch A and catch B for bearing positioning,；Large Gear Shaft is connected with gear wheel by bearing, passes through screw on gear wheel
Steady pin axle bed and balancing weight, are provided with cam pin on axis pin base, slide block A is installed on cam pin；
The chute coordinated with slide block A, the two ends cylinder of short sliding axle are installed on the short sliding axle of described amplitude regulating mechanism
Part is coordinated with the circular hole of short slip bracing strut A, short slip bracing strut B, and short slip bracing strut A and short slip bracing strut B passes through
Screw is fixed on left housing plate and right coverboard, is connected with fork-shaped fork by straight pin A in the middle part of short sliding axle；Long sliding axle two ends
Column part is coordinated with the circular hole of long slip bracing strut A and long slip bracing strut B, long slip bracing strut A and long slip bracing strut B
Left housing plate and right coverboard are fixed on by screw；Straight pin B is installed in the middle part of long sliding axle, is installed on straight pin B and is put with fork-shaped
The slide block B that the U-lag of bar is engaged, the U-lag end of fork-shaped fork are installed by screw and tense block；Install in the middle part of fork-shaped fork
There is amplitude adjusted axle, the slide block C being engaged with the U-lag of fork-shaped fork is installed on amplitude adjusted axle, is installed on amplitude adjusted axle
There is the sleeve for positioning sliding block C, briquetting and wing nut, the squared ends and left housing of amplitude adjusted axle one end are installed outside sleeve
The chute of plate coordinates, while the briquetting on the other end is coordinated with the chute of right coverboard；
Described saw blade fixture is connected with one end of long sliding axle by branch sleeve, and branch sleeve is anti-using holding screw
Pine；Right briquetting and left briquetting are arranged in branch sleeve by straight pin, and saw blade is inserted between right briquetting and left briquetting, and screw is worn
The circular hole for crossing right briquetting and saw blade is screwed in the screwed hole of left briquetting, tightens clamping saw blade by screw；
The saw bow pressing plate of described scalable saw bow is fixed on upper coverboard by screw, is provided with lock-screw on saw bow pressing plate,
Saw bow slide bar is arranged in the groove of saw bow pressing plate, and is connected with saw bow depression bar by screw, and the lower end of saw bow depression bar passes through screw
With nut fixed block.
2. amplitude modulation safety saw according to claim 1, it is characterised in that：Using fork-shaped fork, using lever principle, will
The constant straight reciprocating motion of short sliding axle amplitude passes to long sliding axle after zooming in or out, finally by being installed on long sliding axle
The saw blade fixture of one end drives saw blade motion, and the amplitude for realizing saw blade linear reciprocating motion is adjustable.
3. amplitude modulation safety saw according to claim 1, it is characterised in that：Amplitude adjusted axle passes through briquetting and wing nut
The optional position of left housing plate and the opened chute of right coverboard is securable to, by the position for adjusting amplitude adjusted axle, saw blade is capable of achieving
Linear reciprocating motion amplitude continuously adjustabe in the range of 1～25mm.
4. amplitude modulation safety saw according to claim 1, it is characterised in that：Scalable saw bow is employed, saw bow slide bar can
Slide in the groove of saw bow pressing plate, and desired location can be fixed on by lock-screw, the cunning installed using saw bow depression bar lower end
Wheel plays good guiding and supporting role to saw blade, to adapt to the needs of different rescue occasions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310728546.4A CN104722839B (en) | 2013-12-20 | 2013-12-20 | Amplitude modulation safety saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310728546.4A CN104722839B (en) | 2013-12-20 | 2013-12-20 | Amplitude modulation safety saw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104722839A CN104722839A (en) | 2015-06-24 |
| CN104722839B true CN104722839B (en) | 2017-03-29 |
Family
ID=53447581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310728546.4A Expired - Fee Related CN104722839B (en) | 2013-12-20 | 2013-12-20 | Amplitude modulation safety saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104722839B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112497528A (en) * | 2020-11-27 | 2021-03-16 | 山东天智信息科技有限公司 | Arc-shaped cutting machine for road pavement marble slabs |
| CN113478002B (en) * | 2021-07-13 | 2022-09-06 | 深圳市宏展科技有限公司 | Cutting equipment capable of realizing fixed-length cutting of workpiece |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2749875C2 (en) * | 1977-11-08 | 1986-07-10 | Storz, Karl, 7200 Tuttlingen | Surgical jigsaw |
| EP1232817A2 (en) * | 2001-02-16 | 2002-08-21 | Makita Corporation | Reciprocating power tools |
| CN1532016A (en) * | 2002-12-23 | 2004-09-29 | �ܶ��ֻ��綯���߹�˾ | Driving mechanism and power tool |
| CN102615348A (en) * | 2012-04-11 | 2012-08-01 | 宁波黑松工具有限公司 | Reciprocating saw |
| CN202824851U (en) * | 2012-09-05 | 2013-03-27 | 宁波黑松工具有限公司 | Electric reciprocating saw |
-
2013
- 2013-12-20 CN CN201310728546.4A patent/CN104722839B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2749875C2 (en) * | 1977-11-08 | 1986-07-10 | Storz, Karl, 7200 Tuttlingen | Surgical jigsaw |
| EP1232817A2 (en) * | 2001-02-16 | 2002-08-21 | Makita Corporation | Reciprocating power tools |
| CN1532016A (en) * | 2002-12-23 | 2004-09-29 | �ܶ��ֻ��綯���߹�˾ | Driving mechanism and power tool |
| CN102615348A (en) * | 2012-04-11 | 2012-08-01 | 宁波黑松工具有限公司 | Reciprocating saw |
| CN202824851U (en) * | 2012-09-05 | 2013-03-27 | 宁波黑松工具有限公司 | Electric reciprocating saw |
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| Publication number | Publication date |
|---|---|
| CN104722839A (en) | 2015-06-24 |
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Granted publication date: 20170329 Termination date: 20211220 |