CN107627263A - Electric hammer - Google Patents
Electric hammer Download PDFInfo
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- CN107627263A CN107627263A CN201710938801.6A CN201710938801A CN107627263A CN 107627263 A CN107627263 A CN 107627263A CN 201710938801 A CN201710938801 A CN 201710938801A CN 107627263 A CN107627263 A CN 107627263A
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- electric hammer
- cylinder
- hammer
- jackshaft
- lance
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- 238000009527 percussion Methods 0.000 claims abstract description 46
- 230000007246 mechanism Effects 0.000 description 15
- 230000005540 biological transmission Effects 0.000 description 13
- 238000007789 sealing Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 3
- 239000004519 grease Substances 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000010009 beating Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The present invention provides a kind of electric hammer, and in 0.9Kg between 1.6Kg, it includes the main screw lift of the electric hammer：Motor, jackshaft, Oscillating lever bearing and cylinder assembly；The motor is connected with jackshaft；The cylinder assembly includes：Cylinder, the percussion hammer being housed in the cylinder and the lance coordinated with the percussion hammer；The Oscillating lever bearing is set on the jackshaft, and the swing rod of the Oscillating lever bearing is connected with the cylinder；The ratio of the center line of the cylinder to the internal diameter of distance and the cylinder of the center line of jackshaft is 1.20 to 1.75.The electric hammer of the present invention realizes compact in the case where ensureing that operating efficiency is basically unchanged.
Description
Technical field
The present invention relates to a kind of electric hammer, belong to power tools technology field.
Background technology
Be often required to use various electric tools in engineering construction, for example, using electric hammer concrete, floor, brick wall,
And drilled on stone material.
Existing main screw lift 0.9Kg to the electric hammer between 1.6Kg mainly by motor, transmission mechanism, beater mechanism, with
And the component such as chuck composition, wherein, main screw lift refers to that electric hammer removes the weight after battery bag, assist handle and work head.Tool
Body, transmission mechanism includes：The jackshaft being connected with motor, the Oscillating lever bearing and idler gear that are set on jackshaft,
The Oscillating lever bearing and idler gear can rotate jointly with jackshaft.Beater mechanism includes：With the swing rod being socketed on Oscillating lever bearing
The cylinder being connected, the percussion hammer, the lance with percussion hammer cooperation that are housed in cylinder.In the front end fixed chuck of beater mechanism to press from both sides
Different types of work head is held, so as to realize the drilling purpose under different operating modes.
However, the volume ratio of existing this electric hammer is huger, operator's gripping is uncomfortable, brings operation inconvenience.
The content of the invention
The present invention provides a kind of electric hammer, to solve the problems, such as above-mentioned present in prior art or other potential technologys.
According to some embodiments of the present invention, there is provided a kind of electric hammer, the main screw lift of the electric hammer 0.9Kg to 1.6Kg it
Between, it includes：Motor, jackshaft, Oscillating lever bearing and cylinder assembly；The motor is connected with jackshaft；The cylinder
Component includes：Cylinder, the percussion hammer being housed in the cylinder and the lance coordinated with the percussion hammer；The pendulum shaft bearing sleeve
It is located on the jackshaft, and the swing rod of the Oscillating lever bearing is connected with the percussion hammer；The center line of the cylinder is to jackshaft
The ratio of internal diameter of distance and the cylinder of center line be 1.20 to 1.75.
Electric hammer as described above, wherein, the distance of the center line of the cylinder to the center line of jackshaft for 23.5 to
25.5mm。
Electric hammer as described above, wherein, the distance of center line to the center line of jackshaft of the cylinder is 24.5mm.
Electric hammer as described above, wherein, in addition to input gear and chuck component, the input gear are set in described
It is connected on jackshaft and with the motor；The chuck component is arranged on the front of the lance；The input gear arrives
The ratio of the distance of chuck component and the internal diameter of the cylinder is 6.32 to 7.11.
Electric hammer as described above, wherein, the distance of the input gear to chuck component is 120mm to 135mm.
Electric hammer as described above, wherein, the lance includes：First and second, the end face of described first and institute
Percussion hammer cooperation is stated, the end face of described second coordinates with work head, and the area of the cross section of described second is more than described first
The area of cross section.
Electric hammer as described above, wherein, the ratio of the internal diameter of the length of the lance and the cylinder for 0.667 to
0.865。
Electric hammer as described above, wherein, the length of the lance is 13mm to 16mm.
Electric hammer as described above, wherein, the external diameter of the motor is not more than 46mm.
Electric hammer as described above, wherein, the folded of the motor is failed to grow up in 15mm, wherein, the folded length of the motor refers to
The overlap length of rotor and stator in motor.
Electric hammer as described above, wherein, the internal diameter of the cylinder is 18.5 to 19.5mm.
Electric hammer as described above, wherein, the internal diameter of the cylinder is 19mm.
Electric hammer as described above, wherein, the weight of the percussion hammer is 36 to 46 grams.
Electric hammer as described above, wherein, the weight of the percussion hammer is 42 grams.
Electric hammer as described above, wherein, the frequency that the percussion hammer hits lance is 5400 to 6000 beats/min.
Electric hammer as described above, wherein, the main screw lift of the electric hammer is 1.4Kg.
Technical scheme according to embodiments of the present invention, when cylinder center line to the center line of jackshaft distance with it is described
When the ratio of the internal diameter of cylinder is 1.20 to 1.75, the compact and operating efficiency of electric hammer are basically unchanged, and operator grasps electricity
Hammer is more convenient, also more flexible during operation.
The advantages of additional aspect of the present invention, will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
By referring to the described in detail below of accompanying drawing, the above and other objects, features and advantages of the embodiment of the present invention will
Become more clearly understood from.In the accompanying drawings, by by example and it is nonrestrictive in a manner of to the present invention multiple embodiments say
It is bright, wherein：
Fig. 1 is the structural representation of electric hammer provided in an embodiment of the present invention；
Fig. 2 is the structural representation of lance in Fig. 1.
In figure：
11st, motor；121st, jackshaft；
122nd, input gear；123rd, Oscillating lever bearing；
124th, output gear；131st, cylinder；
132nd, percussion hammer；133rd, lance；
1331st, rear end face；1332nd, front end face；
1333rd, boss；1334th, seal groove；
141st, pivoted housing；142nd, travelling gear；
143rd, latch segment；15th, casing；
16th, handle；171st, sliding sleeve；
172nd, dust cap；173rd, packing ring；
174th, pressing plate；175th, spring；
D:Distance of the center line of cylinder to the center line of jackshaft；
L:Distance of the input gear to chuck component；
d:The internal diameter of cylinder.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or
Position relationship, it is for only for ease of and describes the present invention and simplify description, rather than indicates or imply that signified device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；It can be direct phase
Even, it can also be indirectly connected by intermediary, can be that the connection of two element internals or the interaction of two elements are closed
System.For the ordinary skill in the art, above-mentioned term in the present invention specific can be understood as the case may be
Implication.
Embodiment one
Fig. 1 is the structural representation for the electric hammer that the present embodiment provides, and Fig. 2 is the structural representation of lance in Fig. 1.Need
Bright, the electric hammer of the present embodiment is applied to main screw lift in 0.9Kg to the electric hammer between 1.6Kg, it is preferable that electric hammer complete machine weight
Measure in 1.2Kg to 1.6Kg, further, electric hammer main screw lift is 1.4Kg.Wherein, main screw lift refers to that electric hammer removes battery
Weight after bag, assist handle and work head.
As shown in figure 1, the electric hammer of the present embodiment, including casing 15, motor 11, transmission mechanism, cylinder assembly and pivoted housing
141.The front end (right-hand member in Fig. 1) of casing 15 is working end when electric hammer works, and the rear end (left end in Fig. 1) of casing 15 is
User grips the holding end of electric hammer, and the rear end of casing 15 is provided with handle 16.Pivoted housing 141, hand are installed in casing 15
Handle 16 is obliquely installed relative to the axis of pivoted housing 141.
Cylinder assembly is contained in pivoted housing 141, the hammering operation for the head that works provides power.The cylinder assembly includes：Receive
Hold the cylinder 131 that in pivoted housing 141 and can be moved reciprocatingly, the percussion hammer 132 being housed in cylinder 131 and two end portions
The lance 133 not coordinated with percussion hammer 132 and work head.Fig. 2 is refer to, alternatively, seal groove is offered on percussion hammer 132
1334, sealing ring is installed in seal groove 1334, to improve the sealing between percussion hammer 132 and pivoted housing 141.Similarly, hit
Seal groove 1334, and the installation sealing ring in seal groove 1334 can also be opened up on bar 133, to improve lance 133 and pivoted housing 141
Between sealing.It is appreciated that when percussion hammer 132 and lance 133 offer seal groove 1334, sealing can be played and made
With so as to prevent grease from revealing.
The front portion of pivoted housing 141 extends radially through the outer wall of pivoted housing 141 provided with one and closed parallel to the axis direction of pivoted housing 141
The elongated slot of conjunction, the cell wall of the elongated slot are arranged to inclined-plane, and an approximately spherical latch segment 143 is provided with elongated slot.Work as lock
When tight block 143 is sticked into elongated slot, latch segment 143 can only be partly extend into pivoted housing 141 with working on head under the limitation on inclined-plane
The fit depressions opened up, so that latch segment 143 is unlikely to drop in pivoted housing 141.Also covered in the front portion of pivoted housing 141
Chuck component is provided with provided with the chuck component for clamping work head, namely in the front of lance 133.The chuck component bag
Include：It is set in the sliding sleeve 171 of the periphery of pivoted housing 141 and the dust cap 172 installed in the front end of sliding sleeve 171.It is fixed in sliding sleeve 171
There is the packing ring 173 coordinated with latch segment 143, for limiting latch segment 143, avoid it from deviating from out of elongated slot.After packing ring 173
Portion is fixed with the pressing plate 174 coordinated with latch segment 143, and spring 175 is provided between pressing plate 174 and pivoted housing 141.Pivoted housing 141
Including：The step surface of anterior, rear portion and connection front and rear and the diameter of front portion are less than the diameter at rear portion, above-mentioned spring
175 one end is supported on step surface, and the other end is then supported on the rear surface of pressing plate 174.
The travelling gear 142 with transmission mechanism drive connection is further fixed on pivoted housing 141, to pass through transmission mechanism band turn
The rotation of set 141.In the present embodiment, transmission mechanism includes：Input gear 122, Oscillating lever bearing 123, input gear 122, centre
Axle 121 and output gear 124.The input gear 122 of transmission mechanism be fixed on jackshaft 121 and with the output of motor 11
The gear engagement of axle, is rotated with the jackshaft 121 by the drive transmission device of motor 11.The output gear 124 of transmission mechanism is pacified
Engaged on jackshaft 121 and with the travelling gear 142 being fixed on pivoted housing 141, to drive pivoted housing 141 to rotate.
With continued reference to Fig. 1, the Oscillating lever bearing 123 of transmission mechanism includes inner ring and outer ring.Wherein, inner ring is socketed in jackshaft
On 121 the second axle part, and it can be rotated around central shaft；The cylinder 131 of integrally formed swing rod and cylinder assembly is be hinged with outer ring,
So as to which when jackshaft 121 drives inner ring rotation, swing rod can be along the axis oscillating of jackshaft 121, so that cylinder 131 is along pivoted housing
141 axis moves reciprocatingly, the air between the inwall of compression cylinder 131 and percussion hammer 132, promotes percussion hammer 132 to hit lance
133, and then drive axis of the work head along pivoted housing 141 to move reciprocatingly, to carry out pricker chisel operation.
It is contemplated that when the percussion hammer 132 in the travelling gear 142 and cylinder assembly on pivoted housing 141 passes through centre simultaneously
When axle 121 is driven, if being clamped with work head in chuck component, drilling and pricker chisel operation can be carried out simultaneously.
But existing electric hammer volume is all excessively huge, it is unfavorable for operator's use.In order to reduce the volume of electric hammer, ability
Field technique personnel have carried out compact trial to some solid memders of electric hammer.For example, some schemes are employed motor 11
From the length direction of electric hammer be adjusted to the inclined mode of length direction, although this scheme manufacture electric hammer volume exist
The length of electric hammer is reduced to a certain extent, but adds the width of electric hammer.In addition, such electric hammer in space than narrow
In use, operation is still very inconvenient in environment.In another example other scheme employs the internal diameter d for reducing cylinder 131
Mode, still, this scheme can but cause the operating efficiency of electric hammer obvious decline occur.Therefore, how electric hammer is being reduced
The operating efficiency for ensureing electric hammer while volume is this area unsolved knotty problem always.
For the electric hammer for obtaining compact and operating efficiency is basically unchanged, applicant is imitated to influenceing electric hammer volume and work
The all parts (include but is not limited to motor 11, transmission mechanism, pivoted housing 141, chuck component and cylinder assembly etc.) of rate and he
Between concertedness carried out substantial amounts of test and experiment, finally find by controlling the center line of cylinder 131 to jackshaft
The ratio of distance (hereinafter referred to as " centre-to-centre spacing D ") between D and the internal diameter d of cylinder 131 of 121 center line can make electric hammer
Volume is more compact and keeps the operating efficiency of electric hammer to be basically unchanged, so that operator grasps electric hammer and is more prone to, and
Also can the convenient use electric hammer drilled, the operation such as pricker chisel.Specifically, when the ratio between centre-to-centre spacing D and cylinder 131d
For 1.20 to 1.75 when, the volume of electric hammer reduces by least 15%, and energy relative to the volume of the electric hammer of same heavyweight on the market
Enough ensure that the operating efficiency of electric hammer does not reduce.
Further, in order that there is electric hammer smaller width (fore-and-aft distance in Fig. 1) to reduce the volume of complete machine, center
Can select the arbitrary value in 23.5mm to 31.5mm away from D, for example, centre-to-centre spacing D can be 23.5mm, 24.5mm, 25.5mm or
Person 31.5mm.Found by actual test, when centre-to-centre spacing D is 23.5 to 25.5mm, between the volume and operability of electric hammer
Suitability it is relatively good, it is preferable that when centre-to-centre spacing D is 24.5mm, the compact of electric hammer is also easy to that operator is hand-held to be carried out
Operation, while the activity space of each part in electric hammer can be ensured.
It should be appreciated that in the present embodiment, when centre-to-centre spacing D takes the arbitrary value in 23.5mm to 31.5mm, it is only necessary to gas
The internal diameter d of cylinder 131 disclosure satisfy that centre-to-centre spacing D and its ratio are 1.20 to 1.75, not limit cylinder in the present embodiment
131 internal diameter d numerical value.
Specifically, each centre-to-centre spacing D can correspond to the internal diameter numerical value of identical cylinder 131, for example, 17mm, 19mm or
20mm.Certainly, when design, each centre-to-centre spacing D can also correspond to the internal diameter d numerical value of different cylinders 131 respectively.Example
Such as, in some optional embodiments, centre-to-centre spacing D is 31.5mm, and the internal diameter d of cylinder 131 is 18mm, that is, the ratio of the two
It is worth for 1.75, now the volume of electric hammer operates than the small volume of the electric hammer of same heavyweight on the market, user
It is more convenient.In other optional embodiments, preferred center is 24.5mm away from D, and now, the internal diameter d of cylinder 131 is
19mm, that is, the ratio of the two is 1.29, now the volume of electric hammer can further reduce, and the simple operation of electric hammer
Also can strengthen, and the suitability between the volume and operability of electric hammer also further enhances.In some other embodiment,
Centre-to-centre spacing D is 23.5mm, and the internal diameter d of cylinder 131 is 19.5mm, that is, the ratio of the two is 1.20, now the volume of electric hammer is entered
One step reduces.
The electric hammer of the present embodiment, by control centre away from the ratio between D and the internal diameter d of cylinder 131, electric hammer can be reduced
Volume so that electric hammer is more compact, person easy to operation is drilled using the electric hammer on the surface of workpiece, pricker chisel etc. behaviour
Make, and ensure that the operating efficiency of electric hammer is basically unchanged.
Embodiment two
This implementation is on the basis of embodiment 1, and the distance of chuck component is arrived (hereinafter referred to as to electric hammer input gear 122
" casing length ") L is improved, further to reduce the volume of electric hammer.
Specifically, in the present embodiment, by the casing length L and internal diameter d of cylinder 131 ratio be arranged to 6.32 to
7.11, to reduce the length of electric hammer, so as to reach the purpose of reduction electric hammer volume.Alternatively, casing length L can be arranged to
120 to 135mm, to make electric hammer overall structure compacter on the basis of electric hammer internal structure under can installing, so as to reduce
The volume of electric hammer.For example, casing length L is 120mm, the internal diameter d of cylinder 131 is 19mm, and now, centre-to-centre spacing D is chosen as
24.5mm.In another example casing length L is 123.7mm, the internal diameter d of cylinder 131 is 19mm, and now, centre-to-centre spacing D is chosen as
24.1mm.For another example casing length L is 135mm, the internal diameter d of cylinder 131 is 19mm, and now, centre-to-centre spacing D is chosen as
25.35mm。
Alternatively, can be with as shown in Fig. 2 in order that the distance L of input gear 122 to chuck component meets above-mentioned value
The cross-sectional area for the end face of second that lance 133 coordinates with work head is set greater than into lance 133 with percussion hammer 132 to coordinate
The end face of first cross-sectional area, that is, the internal diameter of front end face 1332 that lance 133 coordinates with work head is more than lance
The internal diameter of 133 rear end faces 1331 coordinated with percussion hammer 132.Specifically, it is the rear end system that coordinates lance 133 and percussion hammer 132
Boss 1333 is formed, and the front end that lance 133 coordinates with work head does not form boss 1333 then, so that before lance 133
End can not be extend into as the lance 133 in existing percussion hammer 132 in the less front portion of the internal diameter of pivoted housing 141, accordingly, in order to suitable
With the lance 133 shortened, the pivoted housing 141 of the electric hammer in the present embodiment and the distance of chuck component have been reduced, so that
The rearward end of work head can be in contact when lance 133 works, so as to which hammering energy to be delivered to the surface of work package.
Alternatively, the length of lance 133 and the internal diameter d of cylinder 131 ratio can be 0.667 to 0.865, so as to as far as possible
The energy loss between percussion hammer 132 and lance 133 is reduced, the operating efficiency of percussion hammer 132 is improved and reduces the volume of electric hammer.
In actual design, the length of lance can be 13mm to 16mm, preferably 15.5mm.For example, the length of lance 133
Degree can be 13mm, and the internal diameter d of cylinder 131 is 19.5mm, and now, casing length L is chosen as 135mm, and centre-to-centre spacing D is chosen as
25.5mm.In another example the length of lance 133 can be 15.5mm, the internal diameter d of cylinder 131 is 19mm, and now, casing length L can
Elect 120mm as, centre-to-centre spacing D is chosen as 24.5mm.For another example the length of lance 133 can be 16mm, the internal diameter d of cylinder 131 is
18.5mm, now, casing length L are chosen as 130mm, and centre-to-centre spacing D is chosen as 24.1mm.In the present embodiment, preferred lance
Length is 15.5mm, and the internal diameter d of cylinder 131 is preferably 19mm.
The electric hammer of the present embodiment, by the way that casing length L and the internal diameter d of cylinder 131 ratio are arranged into 6.32 to 7.11,
The length of electric hammer can be reduced, so as to reduce the volume of electric hammer.Also, when casing length L is 120mm to 135mm, not only may be used
To arrange transmission mechanism, pivoted housing 141, sliding sleeve 171, cylinder assembly with enough length, but also enable to the knot of electric hammer
Structure is compact, and reduces the energy loss of percussion hammer 132 and lance 133.
Embodiment three
The present embodiment is the width that electric hammer is further reduced on the basis of any of the above-described embodiment, to reduce electric hammer
Volume.
Specifically, in the present embodiment, the external diameter of motor 11 is not more than 46mm, to reduce the volume shared by motor 11,
And then reduce the volume of electric hammer.Alternatively, the folded length of motor 11 can also be arranged to be not more than 15mm, can continues to reduce electricity
Volume shared by machine 11, and ensure that the ability to work of motor 11 disclosure satisfy that the operations such as drilling on the surface of the workpiece, pricker chisel.Enter
One step, when the external diameter of motor 11 is 46mm, folds a length of 15mm, dropped relative to the electric hammer can of hammering weight on an equal basis on the market
The volume of low electric hammer.In the present embodiment, the folded length of motor 11 refers to the overlap length of rotor and stator in motor 11.
The electric hammer of the present embodiment, it can further reduce electric hammer in the case where the operating efficiency of electric hammer substantially meets requirement
Volume so that electric hammer is more compact.
Example IV
The present embodiment is the improvement carried out on the basis of any of the above-described embodiment, to improve the operating efficiency of electric hammer,
That is, the efficiency for the operations such as electric hammer is drilled on the surface of the workpiece, pricker is dug.Specifically, operating efficiency refers to that electric hammer uses phase
The inverse ratio for the time beaten with the work head of diameter required for the hole of same diameter and same depth.
Although above example causes the volume of electric hammer to be reduced compared to the volume of the electric hammer of same heavyweight on the market
At least 15%, and ensure that the operating efficiency of electric hammer is basically unchanged, or only a small amount of reduction.Applicant is again to influenceing electricity
The part (including but is not limited to motor 11, pivoted housing 141, cylinder assembly etc.) and their harmony for hammering operating efficiency into shape are carried out
Substantial amounts of test and experiment, as a result find that the internal diameter d for working as cylinder 131 is arranged to 18.5 to 19.5mm, can be in reduction electric hammer body
The operating efficiency of electric hammer is improved while product.
Specifically, the operation power of work head clamped in electric hammer chuck component comes from lance 133 in cylinder assembly
Hammering kinetic energy and pivoted housing 141 to work head drive the rotation torque of work head.In general, in order to improve the work of electric hammer
Make efficiency, reduce time that electric hammer punches on workpiece, it is necessary in the unit interval of increase lance 133 hammer work head frequency,
Or the number of turns that work head rotates in the unit interval.As a diameter of 18.5mm to 19.5mm of cylinder 131, percussion hammer 132 hits
The single impact energy of lance 133 can improve, and match corresponding centre-to-centre spacing D, it is possible to reduce the base of the volume of percussion hammer 132
On plinth, the operating efficiency of percussion hammer 132 is improved.Found after actual test, the electric hammer of the present embodiment is relative to same on the market
The percussion hammer 132 of heavyweight, not only volume can reduce at least 15%, and operating efficiency can improve at least 20%.
In specific design, the internal diameter d of cylinder 131 can arbitrarily arrange in pairs or groups with centre-to-centre spacing D, as long as meeting the ratio of embodiment one
Value.For example, when the internal diameter d of cylinder 131 is 18.5mm, centre-to-centre spacing D is chosen as 31.5mm.In another example when cylinder 131
When internal diameter d is 19mm, centre-to-centre spacing D is chosen as 24.5mm, and above-mentioned value is also the preferred value of this implementation.Electricity under the value
Hammer, not only small volume, operating efficiency are high, and the matching of the two is preferable.For another example when the internal diameter d of cylinder 131 is
During 19.5mm, centre-to-centre spacing D is chosen as 23.5mm.
Further, the weight of percussion hammer 132 could be arranged to 34 to 42g, when hitting lance 133 to continue raising percussion hammer 132
Single impact energy, so as to improve the operating efficiency of electric hammer.For example, when the weight of percussion hammer 132 is 34g, cylinder 131 it is straight
Footpath is chosen as 18.5mm.In another example when the weight of percussion hammer 132 is 38g, the diameter of cylinder 131 is chosen as 19mm.Preferably,
When the weight of percussion hammer 132 is 42g, the diameter of cylinder 131 is chosen as 19.5mm.
By test, in a specific test prototype, the main screw lift of electric hammer is 1.4Kg, and its centre-to-centre spacing D is
24.5mm, casing length L are 123.7, the length of lance 133 is 15.5mm, the external diameter * of motor 11 folds a length of 46mm*15mm, percussion hammer
132 mass are 38g, the internal diameter d of cylinder 131 is 19mm.It is 50mm when beating depth using the electric hammer, aperture 6mm, 8mm, 10mm's
5.3s, 6.8s, 9.5s are only needed during hole respectively, the electric hammer than same heavyweight on the market beats the hole institute in the same aperture of same depth
Take time and at least 1.8s, 2.3s, 0.7s is respectively shortened.The work of the electric hammer of the present embodiment is can be seen that from above test data
The operating efficiency of the relatively existing electric hammer of efficiency is significantly improved.
The electric hammer of the present embodiment,, can be with the premise of ensureing that electric hammer fuselage is compact by controlling the internal diameter d of cylinder 131
Further improve the operating efficiency of electric hammer.
Embodiment five
The present embodiment is improved on the basis of embodiment one, embodiment two or embodiment three, to improve electric hammer
Operating efficiency.Specifically, be by percussion hammer 132 hit lance 133 set of frequency be 5400 to 6000 beats/min.Pass through head-on collision
The collision frequency of hammer 132 is controlled, and can obtain good operating efficiency.
Specifically, in actual design, the choosing of the number of teeth of motor 11, Oscillating lever bearing and gear, modulus etc. can be passed through
Match somebody with somebody to adjust the frequency that percussion hammer 132 hits lance 133, so as to reach the purpose for improving electric hammer operating efficiency.
Embodiment 6
On the basis of any of the above-described embodiment, alternatively, by selecting resistant to elevated temperatures grease and using resistant to elevated temperatures
The mode that material makes transmission mechanism makes the electric hammer at high temperature also can normal work.Again alternatively, propped up using 8-shaped support
Support and positioning jackshaft 121 and cylinder 131, to improve the positioning intensity of cylinder 131 and jackshaft 121, to strengthen cylinder 131
Stability, referring to Publication No. CN206066361U patent of invention, the case be fully incorporated the application as reference.It is optional again
Ground, sealing ring is set between the support of motor 11 and casing 15 and pressure release is set between output gear 124 and travelling gear 142
The sealing of grease is improved in hole, and referring to Publication No. CN204913815U patent of invention, the case is fully incorporated the application work
For reference.
In the description of the invention, reference term " one embodiment ", " some embodiments ", " example ", " specific example ",
Or the description of " some examples " etc. means to combine specific features, structure, material or the feature bag that the embodiment or example describe
It is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term necessarily
It is directed to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be at any one
Or combined in an appropriate manner in multiple embodiments or example.In addition, in the case of not conflicting, those skilled in the art
Member different the embodiments or example and the feature of different embodiments or example described in this specification can be combined and
Combination.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, either which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (16)
1. a kind of electric hammer, in 0.9Kg between 1.6Kg, the electric hammer includes the main screw lift of the electric hammer：Motor, jackshaft,
Oscillating lever bearing and cylinder assembly；
The motor is connected with jackshaft；
The cylinder assembly includes：Cylinder, the percussion hammer being housed in the cylinder and the lance coordinated with the percussion hammer；
The Oscillating lever bearing is set on the jackshaft, and the swing rod of the Oscillating lever bearing is connected with the cylinder；
Characterized in that, the distance and the ratio of the internal diameter of the cylinder of the center line of the cylinder to the center line of jackshaft are
1.20 to 1.75.
2. electric hammer according to claim 1, it is characterised in that the center line of the center line of the cylinder to jackshaft away from
From for 23.5 to 25.5mm.
3. electric hammer according to claim 1, it is characterised in that the center line of the center line of the cylinder to jackshaft away from
From for 24.5mm.
4. electric hammer according to claim 1, it is characterised in that also including input gear and chuck component, the input
Gear is set on the jackshaft and is connected with the motor；The chuck component is arranged on the front of the lance；
The ratio of the input gear to the internal diameter of distance and the cylinder of chuck component is 6.32 to 7.11.
5. electric hammer according to claim 4, it is characterised in that the distance of the input gear to chuck component is 120mm
To 135mm.
6. electric hammer according to claim 5, it is characterised in that the lance includes：First and second, described first
The end face in portion coordinates with the percussion hammer, and the end face of described second coordinates with work head, the area of the cross section of described second
More than the area of first cross section.
7. electric hammer according to claim 5, it is characterised in that the length of the lance and the ratio of the internal diameter of the cylinder
For 0.667 to 0.865.
8. electric hammer according to claim 5, it is characterised in that the length of the lance is 13mm to 16mm.
9. electric hammer according to claim 1, it is characterised in that the external diameter of the motor is not more than 46mm.
10. electric hammer according to claim 9, it is characterised in that the folded of the motor is failed to grow up in 15mm, wherein, it is described
The folded length of motor refers to the overlap length of rotor and stator in motor.
11. according to the electric hammer described in claim any one of 1-10, it is characterised in that the internal diameter of the cylinder be 18.5 to
19.5mm。
12. electric hammer according to claim 11, it is characterised in that the internal diameter of the cylinder is 19mm.
13. electric hammer according to claim 12, it is characterised in that the weight of the percussion hammer is 36 to 46 grams.
14. electric hammer according to claim 13, it is characterised in that the weight of the percussion hammer is 42 grams.
15. according to the electric hammer described in claim any one of 1-10, it is characterised in that the frequency that the percussion hammer hits lance is
5400 to 6000 beats/min.
16. according to the electric hammer described in claim any one of 1-10, it is characterised in that the main screw lift of the percussion hammer is 1.4Kg.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710938801.6A CN107627263B (en) | 2017-09-30 | 2017-09-30 | Electric hammer |
| CN202311549196.5A CN117444906A (en) | 2017-09-30 | 2017-09-30 | Electric hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710938801.6A CN107627263B (en) | 2017-09-30 | 2017-09-30 | Electric hammer |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311549196.5A Division CN117444906A (en) | 2017-09-30 | 2017-09-30 | Electric hammer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107627263A true CN107627263A (en) | 2018-01-26 |
| CN107627263B CN107627263B (en) | 2023-11-10 |
Family
ID=61105352
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710938801.6A Active CN107627263B (en) | 2017-09-30 | 2017-09-30 | Electric hammer |
| CN202311549196.5A Pending CN117444906A (en) | 2017-09-30 | 2017-09-30 | Electric hammer |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311549196.5A Pending CN117444906A (en) | 2017-09-30 | 2017-09-30 | Electric hammer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110561350A (en) * | 2019-08-28 | 2019-12-13 | 浙江信源电器制造有限公司 | Novel electric hammer |
| EP4209306A1 (en) * | 2021-12-20 | 2023-07-12 | Nanjing Chervon Industry Co., Ltd. | Hammer drill |
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| EP4209306A1 (en) * | 2021-12-20 | 2023-07-12 | Nanjing Chervon Industry Co., Ltd. | Hammer drill |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107627263B (en) | 2023-11-10 |
| CN117444906A (en) | 2024-01-26 |
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