CN104209586A - Electric tool - Google Patents
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- CN104209586A CN104209586A CN201310207767.7A CN201310207767A CN104209586A CN 104209586 A CN104209586 A CN 104209586A CN 201310207767 A CN201310207767 A CN 201310207767A CN 104209586 A CN104209586 A CN 104209586A
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Abstract
The invention provides a reciprocating mechanism used for an electric tool. The reciprocating mechanism comprises a rotary wheel, a first eccentric portion, an output component and a first balance block. The rotary wheel is provided with a first center axis, the first eccentric portion is arranged on the rotary wheel, the first eccentric portion revolves around the first center axis serving as the rotation center line along with rotation of the rotary wheel, the output component is driven by revolution of the first eccentric portion, the first balance block is arranged on the rotary wheel, the gravity center of the first balance block and the first eccentric portion are located on the two sides of the first center axis of the rotary wheel respectively, and first component force of centrifugal force generated when the first balance block rotates along with the rotary wheel in the first direction can balance counterforce generated when the first eccentric portion of the rotary wheel drives the output component of the electric tool to move in the first direction. The reciprocating mechanism further comprises a second balance block, and the second balance block can balance second component force of the centrifugal force of the first balance block in the second direction perpendicular to the first direction when the second balance block is driven by the rotary wheel.
Description
Technical field.
The application relates to field of power tools, particularly relates to the electric tool having and move back and forth function.
Background technology
Common electric tool, such as electric hammer, reciprocating saw etc., all comprise the movement conversion mechanism for rotary motion being converted to linear movement.
The output link of the electric tool of the above-mentioned type performs and moves back and forth and carry out the operation such as reciprocating impact or reciprocating cutting to target workpiece, and being positioned at the parts that tool interior moves back and forth can produce reaction force.This reaction force causes tool vibration, and the vibration passing of instrument to operating personnel on hand, makes operating personnel uncomfortable or hurt operating personnel, also makes reduce the service life of electric tool.
In order to make electric tool obtain desirable operating characteristics, reduce the vibration of generation, those skilled in the art have done many effort simultaneously.
Such as in U.S. Patent No. USRE35258E, describe a kind of reciprocating-type saw, its movement conversion mechanism comprises the first cam pin, the center of this first cam pin is biased a distance, for doing linear reciprocating motion by intermediate mass drive shaft rod from the rotation of gear; The off-centre operation portion eccentric from the rotation of gear towards the side (become 180 degree) contrary with cam pin.When gear is rotated, the output link of saw and axostylus axostyle and balance component be linear reciprocating motion in the opposite direction respectively by cam pin and off-centre operation portion drive, and so plays balance and reduces the object of vibration.
U.S. Patent No. US7996996B2 discloses a kind of reciprocating-type saw.The drive unit (cam pin) of axostylus axostyle and the drive part of balance component of saw leave, and the quality of balance component can be reduced, and the more compact structure of such saw own is lighter.
Similar movement transmission structure is also applied to electric hammer, such as electric hammer disclosed in U.S. Patent No. US6907943B2.
Summary of the invention
The object of this invention is to provide the method for vibration that another reduces the electric tool of outputting reciprocating linear movement, or be at least user and provide a kind of and select.
For this reason, the invention provides a kind of reciprocator for electric tool, it comprises: driven and the swiveling wheel of rotation by the power source of electric tool, described swiveling wheel has the first central axis, swiveling wheel with the first central axis for rotation centerline and rotation; Be arranged at the first eccentric part on above-mentioned swiveling wheel, described first eccentric part is that rotation centerline revolves round the sun along with swiveling wheel from transferring around the first central axis, driven, along the output link of the electric tool that first direction moves back and forth by above-mentioned first eccentric part revolution; And first balance weight, described first balance weight is arranged on swiveling wheel, the center of gravity of the first balance weight and above-mentioned first eccentric part lay respectively at the both sides of the first central axis of swiveling wheel, the first eccentric part reaction force in a first direction when the output link motion driving electric tool of the centrifugal force produced when described first balance weight rotates with swiveling wheel the first component energy balance rotating wheel in a first direction; Described reciprocator also comprises the second balance weight driven by swiveling wheel, second component of centrifugal force in the second direction perpendicular with first direction of energy balance those first balance weight when the second balance weight is driven by swiveling wheel.
According to a preferred embodiment, above-mentioned swiveling wheel is provided with the second eccentric part, the second eccentric part is that pivot revolves round the sun along with swiveling wheel from transferring around the first central axis, moves back and forth to drive the second balance weight.
According to a preferred embodiment, described second balance weight is driven by described first eccentric part and moves back and forth.
According to a preferred embodiment, above-mentioned second balance weight is driven by the second eccentric part and moves back and forth along second direction, and the second balance weight moves back and forth second component of centrifugal force in second direction that can balance the first balance weight to the reaction force along second direction of the second eccentric part generation along second direction.
According to a preferred embodiment, above-mentioned second balance weight is provided with elongated hole, and above-mentioned second eccentric part is contained in elongated hole and drives the second balance weight to move back and forth along second direction, and the second balance weight is bilateral symmetry centered by the extending direction of elongated hole.
According to a preferred embodiment, the extending direction of the elongated hole of above-mentioned second balance weight is identical with first direction, when the second eccentric part rotates with swiveling wheel and revolves round the sun, slides in a first direction relative to the extending direction of elongated hole along elongated hole.
According to a preferred embodiment, the extending direction of elongated hole and the angle of first direction of above-mentioned second balance weight are less than or equal to 60 degree, when the second eccentric part rotates with swiveling wheel and revolves round the sun, the extending direction of elongated hole slide relative to elongated hole
According to a preferred embodiment, be provided with guiding second balance weight between above-mentioned second balance weight and power tool body along the guiding mechanism perpendicular to the rectilinear motion of elongated hole bearing of trend.
According to a preferred embodiment, the second eccentric part is arranged and offers a hole, above-mentioned first eccentric part is the pin in one end is contained on above-mentioned second eccentric part hole, and pin has the second central axis.
According to a preferred embodiment, the second eccentric part is a cylinder, and cylinder has the 3rd central axis, and above-mentioned first central axis, the second central axis and the 3rd central axis are parallel to each other.
According to a preferred embodiment, above-mentioned first balance weight is the fan-shaped weight block being arranged at swiveling wheel side.
According to a preferred embodiment, above-mentioned second balance weight is by the first eccentric part actuation movement.
So, the power that what the moving component in electric tool produced in motion process comprise inertia force and centrifugal force etc. substantially all reaches balance, so the vibration that electric tool produces is minimized, electric tool is avoided to cause internal part to destroy because of the vibration produced, both extend the service life of electric tool, and make again operating personnel cosily to operate.
Accompanying drawing explanation
The above-mentioned of the application and further feature and advantage can be understood better in preferred embodiment below in conjunction with the application of accompanying drawing description, wherein:
Fig. 1 is the stereogram according to reciprocating-type saw of the present invention, and wherein, the parts thereof of such as shell etc. has been removed;
Fig. 2 is the longitudinal sectional drawing of the reciprocating-type saw of Fig. 1;
Fig. 3 is the stereogram according to electric hammer of the present invention, and wherein, the parts thereof of such as shell etc. has been removed;
Fig. 4 is the front view of Fig. 3; And
Fig. 5 is the top view of Fig. 3.
Detailed description of the invention
In this article, term " electric tool " include but not limited to, reciprocating type electric saw and electric hammer.And the portable power tool with other type of above-mentioned feature is also within the scope of the invention involved.
The reciprocating movement conversion mechanism that electric tool comprises the driven unit exporting rotary motion, the rotary motion performing reciprocating output precision and in the future self-driven assembly is converted to output precision.When output precision is moved back and forth by driving, because the change of the direction of motion can be produced in reciprocal process, the active force produced by the change of the direction of motion and the change of reaction force, electric tool can be made to produce vibration, this can reduce the service life of electric tool, also fatigue damage on physiology is brought to operating personnel, also affect the comfortableness that operating personnel operate electric tool simultaneously.
The vibration that the output precision that the object of the invention is to reduce electric tool produces when moving back and forth, this purpose is achieved by the of the present invention novel movement conversion mechanism of basis.
Describe in detail according to movement conversion mechanism of the present invention for reciprocating-type saw and electric hammer below.
Fig. 1 shows the stereogram of the part according to reciprocating-type saw of the present invention.Reciprocating-type saw in the present embodiment comprises driven unit, motion transition components 6 and output precision.The convert rotational motion of driven unit is the reciprocating motion of output precision by motion transition components 6, with this, the saw blade be assembled on output precision can be moved back and forth, thus reach the reciprocating cutting function of reciprocal certificate.
As depicted in figs. 1 and 2, driven unit comprises motor (not shown) and the driving shaft 2 by motor-driven rotation.Motion transition components 6 comprises gear 12, cam pin 14, balance component 18 and weighted 50.
The gear 12 of motion transition components is installed in electric tool by rotating shaft 16, has bearing between gear 12 and rotating shaft 16, and gear 12 can be rotated relative to the body of electric tool.Gear 12 is driven by the driving shaft 2 of above-mentioned driven unit and rotates, the central axis of gear 12 and the central axis upright of driving shaft 2, gear 12 and driving shaft 2 are respectively equipped with the intermeshing cone tooth of energy, and driving shaft 2 passes through the cone tooth driven wheel 12 of engagement around its center axis thereof.
Gear 12 comprises body 30, and body 30 comprises the upper surface 32 being formed with cone tooth, and the lower surface 34 contrary with upper surface 32.Rounded protrusions 40 is had, the distance that the central axis of rounded protrusions 40 sets from the center axis deviation one of gear 12 from upper surface 32 projection vertically upward of the body 30 of gear 12.Rounded protrusions 40 is established and directly has pin press-fit holes 24, the lower end of cam pin 14 is press fit in pin press-fit holes 24, rotates along with the rotation of gear 12.The central axis of cam pin 14 and the central axis of gear 12 also depart from the distance of a setting.At gear 12 by driving around its center axis thereof time, rounded protrusions 40 and cam pin 14 all revolve round the sun around rotating shaft 16.
Output precision comprises the mandrel 4 moved back and forth, the saw blade clamping part 3 of the one end being assembled in mandrel 4 and the saw blade (not shown) that clamped by saw blade clamping part 3.Mandrel 4 is arranged by U-shaped guide member 20, the extending direction of guide member 20 and the extend longitudinally direction of mandrel 4 perpendicular.The other end of above-mentioned cam pin 14 is contained in the U-shaped guide member 20 of above-mentioned mandrel 4, at cam pin 14 along with gear 12 rotates, when the revolution of the central axis of gear 12, cam pin 14 drives mandrel 4 that its direction D1 extending longitudinally is moved back and forth by guide member 20.Wherein, the end be contained in guide member 20 of cam pin 14 is also provided with an intermediate mass 28, and be generally needle bearing, intermediate mass 28 is positioned at the U-shaped structure of guide member 20.When cam pin 14 revolves round the sun around central axis, cam pin 14 can move to drive mandrel 4 to move back and forth in the direction di relative to it in guide member 20, and intermediate mass 28 helps its slip smooth and easy.With this, the saw blade be assembled on mandrel 4 can be moved back and forth in the direction di, reach the function of sawing.This drives structure is prior art, is not described in detail in this.
When mandrel 4 be driven in direction D1 moves back and forth time, its athletic meeting changed in the direction di produces reaction force to cam pin 14.This reaction force is passed to gear 12 by cam pin 14, and now, gear 12 is subject to unbalanced power in the direction di, and the power of this unbalanced power will make electrician tool produce vibration.For reducing this vibration, the motion transition components 6 of electric tool of the present invention is provided with weighted 50 and balance component 18.
In the application, weighted 50 is set up the below being positioned at gear 12, from lower surface 34 projection downwards of the body 30 of gear 12, can rotate together along with gear 12.Weighted 50 roughly in fan-shaped, has center of gravity.Weighted 50 can with gear 12 one, also can be assembled on gear 12.Weighted 50 and rounded protrusions 40 are positioned at the two opposite sides of the central axis of gear 12, and especially the center of gravity of weighted 50 and the central axis of rounded protrusions 40 are positioned at the two opposite sides of the central axis of gear 12.
When gear 12 is around its central axis time rotational, weighted 50 around this center axis thereof, can produce centrifugal force F with gear 12 thus.According to mechanics principle, this centrifugal force can be broken down into along direction D1 the first component F1 and with the second component F2 of direction D1 to vertical direction D2.The size of weighted 50 and weight be configured to the first component F1 on the D1 of direction can balance mandrel 4 in the direction di to the reaction force of gear 12.With this, eliminate the out-of-balance force that gear 12 has in the direction di.But the second component F2 on above-mentioned direction D2 also can make electric tool produce vibration, and brings adverse effect to operator.In order to eliminate the unbalanced power of this second component F2, the present invention is provided with a balance component 18 at motion transition components 6.
As shown in Figure 1, balance component 18 is a symmetrical weight block, in the middle line of symmetry is provided with an elongated hole 36, and according to the operation environment of reality, balance component 18 can be left-right asymmetry structure.In the present embodiment, balance component 18 has rectangle and semicircular combined shaped, and other symmetrical structures are also passable.The lobe of said gear 12 is contained in the elongated hole 36 of above-mentioned balance component 18.The bearing of trend that balance component 18 is configured to its elongated hole 36 is identical with direction D1, namely with direction D2 to vertical.
The upper surface 19 of balance component 18 is provided with and is guided by guide rail section 42, the component (not shown) that can slide along direction D2.Guide rail section 42 is relative with the body of electric tool fixing, offers the guide channel 46 extended to form along direction D2, by above-mentioned guide channel, balance component 18 can only be slided in the direction d 2.In prior art, guiding can be realized and make the structure that it slides along a predetermined direction, all can be used in this technology.
When rounded protrusions 40 with gear 12 from then when revolve round the sun around its central axis, in the direction di, rounded protrusions 40 is movement in the elongated hole 36 of balance component 18, and can not move in the direction di by driven equilibrium component 18.In the direction d 2, rounded protrusions 40 driven equilibrium component 18 reciprocatingly slides.So.Under the guiding of above-mentioned lead segment 42, rounded protrusions 40 driven equilibrium component 18 slides in direction D2 linear reciprocation.
When reciprocating linear slides balance component 18 in the direction d 2, the movement locus of its slip in the direction d 2 can produce change, can produce reaction force acts thus on rounded protrusions 40.And by rounded protrusions 40, the reaction force produced by balance component 18 is passed to gear 12, the second component F2 produced in the direction d 2 by the centrifugal force of weighted 50 can be eliminated thus.
Known by said structure, all poised state is at the perpendicular direction D1 of reciprocating saw entirety and the power of direction D2, according to mechanics principle, after perpendicular direction D1 and the power of direction D2 are balanced, also just eliminate and cause back and forth according to vibrative unbalanced power.
The size of the reaction force that above-mentioned balance component 18 produces in the direction d 2, can according to the weight of balance component 18, the position adjustment of the central axis of lobe 40 opposed gear 12.With this, by the effect of weighted 50 and balance component 18, can eliminate or reduce the reciprocating motion of reciprocating saw coping saw blade when cutting and the vibration that produces greatly.With this, eliminate the adverse influence produced due to the vibration of reciprocating saw.
Wherein, the elongated hole 36 of above-mentioned balance component 18 can be configured to the position with direction D1 with certain angle, and is arranged to slide along the direction D3 linear reciprocation perpendicular to elongated hole 36 by balance component 18 by corresponding lead segment 42.When rounded protrusions 40 driven equilibrium component 18 slides along direction D3 linear reciprocation, balance component 18 will produce reaction force to rounded protrusions 40 on the D3 of direction, produce reaction force with this to gear 12.According to the force resolution principle of mechanics, the first component on the D1 of direction and the second component on the D2 of direction also can be broken down into by balance component 18 at the reaction force of direction D3.It can thus be appreciated that, even if the direction of motion of balance component 18 is on the D3 of direction, also can produce power in the direction d 2, and this power at direction D2 also can be used to the second component F2 balancing breeding component 50 centrifugal force in the direction d 2.And the component produced in D1 direction by balance component 18 can be balanced by the first component F1 that weighted 50 produces in the direction di.Through overtesting, the extending direction of the elongated hole 36 of the balance component 18 of the application can be configured to form with direction D1 the position that is less than or equal to the angle of 60 degree.The extending direction being preferably in above-described embodiment the elongated hole 36 of the balance component 18 disclosed is configured to the position identical with direction D1, and namely angle is between the two zero degree.
In sum, consider the power that all moving components produce in saw operating process, configuration and the rounded protrusions 40 of design gear 12 and the geometric parameter of cam pin 14, deviation angle between the position comprising respective central axis, the central axis that is associated or deviation distance, the geometric parameter of configuration and design balance component 18 and weighted 50, comprise respective shape, quality or position of centre of gravity etc., the vibration that electric tool is in use produced farthest reduces, electric tool structure is simpler simultaneously, is easy to produce.
Shown below is the variation mode that may exist:
In the present embodiment, the central axis of rounded protrusions 40 does not overlap with the central axis of cam pin 14.In other embodiments, the central axis of rounded protrusions can overlap with the central axis of cam pin, and after overlap, rounded protrusions 40 and cam pin 14 can be parts.
In the present embodiment, rounded protrusions 40 forms with the body 30 of gear 12.In other embodiments, rounded protrusions 40 can separate with the body 30 of gear 12 and formed and be fixed thereon, such as, be threaded connection or mode that welding etc. is known in the art.
Alternatively, pin press-fit holes 24 can not penetrate the body 30 of gear 12, or cam pin 14 otherwise can be fixedly connected to the body 30 of rounded protrusions 40 or gear 12, is such as above mentionedly threaded or the mode such as welding.It is also possible that cam pin 14 is integrally formed on the rounded protrusions 40 of gear 12 or body 30.
In the present embodiment, weighted 50 is the parts be integrally formed with the body 30 of gear 12.Certainly, as aforementioned, weighted 50 also can be separable of being fixed on body 30.
The following describes according to another kind of electric tool-electric hammer of the present invention.
Shown in Fig. 4-6, electric hammer comprises the driving shaft 102 as a part for driven unit, and it is driven by the motor that battery or external power supply are powered and export rotary motion.
The movement conversion mechanism 106 of electric hammer comprises and engages with driving shaft 102 and driven by it gear 112 rotated, when gear 112 is rotated by driving, around the central axis (not shown) rotation of himself as the gear 12 of above-mentioned reciprocating saw.
With the embodiment of reciprocating-type saw unlike, the gear 112 of electric hammer is parallel with the central axis of driving shaft 102, and both are driven by the engagement of common straight-tooth.
Identical with reciprocating saw, the movement conversion mechanism 106 of electric hammer also comprises one and protrudes upward rounded protrusions 140 from the upper surface 121 of gear 112.The distance that the central axis of rounded protrusions 140 sets from the center axis deviation one of gear 112.
The output precision of electric hammer comprises connecting plate 9, piston 13 and impulse member 15.
Cam pin 114 protrudes upward from rounded protrusions 140, the distance that the central axis of cam pin 114 sets from the center axis deviation one of gear 112, forms hubbing structure, with this with one end of connecting plate 9, form cam hubbing structure, the other end of connecting plate 9 is connected with piston 13 hinge.When gear 112 is rotated by driving, cam pin 114 rotates with gear 112, by connecting plate 9, drives the piston 13 of electric hammer to move back and forth.Piston 13 is assembled in cylinder (non-label), by the straight reciprocating motion of piston 13 in cylinder, air in gap 17 between compression piston 13 and impulse member 15, air pressure of bearing impulse member 15 breaks through the power of critical setting, impulse member 15 can eject at a high speed forward, the tool heads promoting to be positioned at its front end is impacted after to workpiece, reaches the effect of the impact of electric hammer.
Above-mentioned piston 13 is understood as above-mentioned reciprocating saw by during driving linear reciprocating motion, reaction force is produced in the direction di by connecting plate 9 pairs of cam pins 114, and this instead can be passed to gear 112 as power by cam pin 114, make gear 112 be subject to unbalanced power in the direction di, and make electric hammer produce vibration.
As the description of above-mentioned reciprocating saw, the application by arranging the weighted 150 similar with above-mentioned reciprocating saw on gear 112, and to be rotated with gear 112 by it and centrifugal force the first component in the direction di of producing carrys out balance gear above-mentioned unbalanced power in the direction di, make gear 112 dynamic balance in the direction di.
Identical with the situation of above-mentioned reciprocating saw, weighted 150 also has the second component of its centrifugal force on the direction D2 perpendicular with direction D1, for eliminating this second component.The application arranges symmetrical balance component 118 as similar in above-mentioned reciprocating saw and carrys out counterweight component 150 the second component in the direction d 2.The extending direction of the elongated hole 136 of this balance component 118 also can be arranged to the angle being less than or equal to 60 with direction D1, and the embodiment of its optimum is that the extending direction of elongated hole 136 is identical with direction D1, and namely angle is between the two zero degree.
As above-mentioned, in operation, electric hammer entirety reaches balance substantially in the power of direction D1 and direction D2, thus farthest reduces issuable vibration.
As above-mentioned, can say, the inertia force produced in linear reciprocating motion process according to the output precision of electric tool of the present invention is by the centrifugal force of weighted component balance in the direction, and the centrifugal force of weighted is along reaching balance perpendicular to the force component on the direction in this direction by the inertia force of another eccentric component.Thus achieve the vibration this purpose reducing electric tool and produce in the course of the work.
Be described about multiple embodiment of the present invention above, but the embodiment that the present invention describes above being not intended to be limited to and accompanying drawing is illustrated.The feature described about an embodiment is equally applicable to other embodiments of the invention, and the feature of different embodiment can be combined with each other and form new embodiment.When not departing from the essence and scope that are limited by claim below, those skilled in the art can carry out various amendment and variation to above-described embodiment.
Claims (12)
1., for a reciprocator for electric tool, it comprises:
Driven and the swiveling wheel of rotation by the power source of electric tool, described swiveling wheel has the first central axis, swiveling wheel with the first central axis for rotation centerline and rotation;
Be arranged at the first eccentric part on above-mentioned swiveling wheel, described first eccentric part is that rotation centerline revolves round the sun along with swiveling wheel from transferring around the first central axis,
Driven, along the output link of the electric tool that first direction moves back and forth by above-mentioned first eccentric part revolution; And
First balance weight, described first balance weight is arranged on swiveling wheel, the center of gravity of the first balance weight and above-mentioned first eccentric part lay respectively at the both sides of the first central axis of swiveling wheel, the first eccentric part reaction force in a first direction when the output link motion driving electric tool of the centrifugal force produced when described first balance weight rotates with swiveling wheel the first component energy balance rotating wheel in a first direction;
It is characterized in that, described reciprocator also comprises the second balance weight driven by swiveling wheel, second component of centrifugal force in the second direction perpendicular with first direction of energy balance those first balance weight when the second balance weight is driven by swiveling wheel.
2. reciprocator according to claim 1, wherein, above-mentioned swiveling wheel is provided with the second eccentric part, and the second eccentric part is that pivot revolves round the sun along with swiveling wheel from transferring around the first central axis, moves back and forth to drive the second balance weight.
3. reciprocator according to claim 1, wherein, described second balance weight is driven by described first eccentric part and moves back and forth.
4. reciprocator according to claim 2, wherein, above-mentioned second balance weight is driven by the second eccentric part and moves back and forth along second direction, and the second balance weight moves back and forth second component of centrifugal force in second direction that can balance the first balance weight to the reaction force along second direction of the second eccentric part generation along second direction.
5. reciprocator according to claim 4, wherein, above-mentioned second balance weight is provided with elongated hole, and above-mentioned second eccentric part is contained in elongated hole and drives the second balance weight to move back and forth along second direction, and the second balance weight is bilateral symmetry centered by the extending direction of elongated hole.
6. reciprocator according to claim 5, wherein, the extending direction of the elongated hole of above-mentioned second balance weight is identical with first direction, when the second eccentric part rotates with swiveling wheel and revolves round the sun, slides in a first direction relative to the extending direction of elongated hole along elongated hole.
7. reciprocator according to claim 5, wherein, the extending direction of elongated hole and the angle of first direction of above-mentioned second balance weight are less than or equal to 60 degree, when the second eccentric part rotates with swiveling wheel and revolves round the sun, the extending direction of elongated hole slide relative to elongated hole
8. the reciprocator according to claim 5 or 6, wherein, is provided with guiding second balance weight along the guiding mechanism perpendicular to the rectilinear motion of elongated hole bearing of trend between above-mentioned second balance weight and power tool body.
9. reciprocator according to claim 2, wherein, the second eccentric part is arranged and offers a hole, and above-mentioned first eccentric part is the pin in one end is contained on above-mentioned second eccentric part hole, and pin has the second central axis.
10. reciprocator according to claim 9, wherein, the second eccentric part is a cylinder, and cylinder has the 3rd central axis, and above-mentioned first central axis, the second central axis and the 3rd central axis are parallel to each other.
11. reciprocators according to claim 1, wherein, above-mentioned first balance weight is the fan-shaped weight block being arranged at swiveling wheel side.
12. reciprocators according to claim 4-8 item, wherein, above-mentioned second balance weight is by the first eccentric part actuation movement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310207767.7A CN104209586B (en) | 2013-05-29 | 2013-05-29 | Electric tool |
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|---|---|---|---|
| CN201310207767.7A CN104209586B (en) | 2013-05-29 | 2013-05-29 | Electric tool |
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| CN104209586B CN104209586B (en) | 2018-02-02 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108702964A (en) * | 2018-04-09 | 2018-10-26 | 浙江明磊新能源科技有限公司 | A kind of reciprocating saw |
| CN112400450A (en) * | 2020-11-20 | 2021-02-26 | 苏州夏菲机械科技有限公司 | Cutterhead dynamic balance adjusting device for mowing |
| US11453093B2 (en) | 2019-06-24 | 2022-09-27 | Black & Decker Inc. | Reciprocating tool having planetary gear assembly and counterweighting assembly |
| US11839964B2 (en) | 2022-03-09 | 2023-12-12 | Black & Decker Inc. | Counterbalancing mechanism and power tool having same |
| US11958121B2 (en) | 2022-03-04 | 2024-04-16 | Black & Decker Inc. | Reciprocating tool having orbit function |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07266258A (en) * | 1994-03-25 | 1995-10-17 | Hitachi Koki Co Ltd | Tool holding device of electric hammer |
| CN1559730A (en) * | 2004-02-25 | 2005-01-05 | 苏州宝时得电动工具有限公司 | Reciprocating rod balancing mechanism of reciprocating type electric power tool |
| CN1579692A (en) * | 2003-08-01 | 2005-02-16 | 株式会社牧田 | Reciprocating power tool |
| CN1761553A (en) * | 2003-03-21 | 2006-04-19 | 百得有限公司 | Vibration reduction apparatus for power tool and power tool incorporating such apparatus |
| CN101790440A (en) * | 2007-08-30 | 2010-07-28 | 株式会社牧田 | Impact tool |
| US20110247223A1 (en) * | 2010-04-12 | 2011-10-13 | Makita Corporation | Reciprocating cutting tools |
-
2013
- 2013-05-29 CN CN201310207767.7A patent/CN104209586B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07266258A (en) * | 1994-03-25 | 1995-10-17 | Hitachi Koki Co Ltd | Tool holding device of electric hammer |
| CN1761553A (en) * | 2003-03-21 | 2006-04-19 | 百得有限公司 | Vibration reduction apparatus for power tool and power tool incorporating such apparatus |
| CN1579692A (en) * | 2003-08-01 | 2005-02-16 | 株式会社牧田 | Reciprocating power tool |
| CN1559730A (en) * | 2004-02-25 | 2005-01-05 | 苏州宝时得电动工具有限公司 | Reciprocating rod balancing mechanism of reciprocating type electric power tool |
| CN101790440A (en) * | 2007-08-30 | 2010-07-28 | 株式会社牧田 | Impact tool |
| US20110247223A1 (en) * | 2010-04-12 | 2011-10-13 | Makita Corporation | Reciprocating cutting tools |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108702964A (en) * | 2018-04-09 | 2018-10-26 | 浙江明磊新能源科技有限公司 | A kind of reciprocating saw |
| US11453093B2 (en) | 2019-06-24 | 2022-09-27 | Black & Decker Inc. | Reciprocating tool having planetary gear assembly and counterweighting assembly |
| CN112400450A (en) * | 2020-11-20 | 2021-02-26 | 苏州夏菲机械科技有限公司 | Cutterhead dynamic balance adjusting device for mowing |
| US11958121B2 (en) | 2022-03-04 | 2024-04-16 | Black & Decker Inc. | Reciprocating tool having orbit function |
| US11839964B2 (en) | 2022-03-09 | 2023-12-12 | Black & Decker Inc. | Counterbalancing mechanism and power tool having same |
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| CN104209586B (en) | 2018-02-02 |
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