CN102649266A - Multifunctional double-speed electric hammer - Google Patents
Multifunctional double-speed electric hammer Download PDFInfo
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- CN102649266A CN102649266A CN2012101102323A CN201210110232A CN102649266A CN 102649266 A CN102649266 A CN 102649266A CN 2012101102323 A CN2012101102323 A CN 2012101102323A CN 201210110232 A CN201210110232 A CN 201210110232A CN 102649266 A CN102649266 A CN 102649266A
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Abstract
The invention relates to a multifunctional double-speed electric hammer, which comprises a shell and a transmission mechanism arranged in the shell and fixed on a machine body, wherein the transmission mechanism comprises a motor, a motor gear tightly assembled on the motor, an oscillating bar component and an air cylinder. The transmission mechanism also comprises a hammer drill transmission device and a high-speed and low-speed transmission device. According to the technical scheme of the invention, the multifunctional double-speed electric hammer has a simple structure and is low in cost, high speed and low speed switch and hammer drill function switch can be conveniently realized so as to further realize the switch of five functions.
Description
Technical field
The present invention relates to a kind of electric tool, particularly a kind of multi-functional double speed electric hammer.
Background technology
Electric hammer is a kind of conventional instrument, aspect percussive drilling, has unique function.The basic structure of electric hammer generally is to be made up of shell and transmission mechanism, and transmission mechanism can be realized rotational motion and ballistic motion.Specifically, motor drives drill bit through the gear train engagement and rotates, and drives cylinder and piston through a clutch Oscillating lever bearing again, thereby makes the drill bit that rotates produce ballistic motion again.Synthetic thus motion is the motion of electric hammer.
The applicant is engaged in the research in electric hammer field always, has submitted an application for a patent for invention on August 31st, 2009, discloses a kind of lithium battery electric hammer; Shell is quadrangle, and transmission mechanism is installed on the top of shell, and outer casing bottom is equipped with lithium battery; Shell leans on the side arm of drill bit side, i.e. assistant's handle plays a supportive role and hand gripping with fixing electric hammer when being convenient to electric hammer and using; Shell opposite side side arm, promptly Top carry handle then is equipped with the electric hammer start button; The transmission mechanism aspect of electric hammer; Be motor, clutch gear wheel, pinion shaft, pinion, cylinder gear wheel and the drill bushing that carries out transmission of power successively on the one hand; Realize the rotary head rotational motion; Be on the other hand the motor that carries out transmission of power successively, clutch gear wheel, Oscillating lever bearing, with the hinged piston of the fork on the Oscillating lever bearing, piston towards piece, impact block, cylinder and drill bushing, realize the reciprocal straight line shock motion of drill bit.Certainly, in other electric hammers, also can see similar above-mentioned design.One of innovative point of this patent application; Cooperate about the chuck spring through eccentric knob exactly and stir the cylinder gear wheel; Add cooperating of shell fragment and clutch spring, realize that the impact that drills through motion (be called for short and bore) and electric hammer merely of electric hammer adds the switching that drills through resultant motion (abbreviation is hammered into shape).This patent is obtained the authorization at present.
Yet in production and sales; Find that there is following defective in existing single speed electric hammer: bore with the combination of hammer too single; And can not realize boring or hammering into shape the high speed of motion or the adjustment of low speed, thus can not adapt to demand in the reality (when electric hammer when beating mixed earth or rock, need stronger impulsive force and lower rotating speed; Promptly need low speed hammer function, so that can punch more fast and better protection alloy bit; And when beating hole such as wood or steel plate, do not need impact function but the higher rotating speed of needs, promptly need the high speed drill function, thereby can bring punching more fast).
In view of this, the inventor combines to be engaged in electric hammer area research work experience for many years, and the defective of above-mentioned technical field is studied for a long period of time, and this case produces thus.
Summary of the invention
The object of the present invention is to provide a kind of multi-functional double speed electric hammer simple in structure, with low cost, can realize easily that the high low speed of electric hammer switches and the switching of hammer drill function.
To achieve these goals, technical scheme of the present invention is following:
A kind of multi-functional double speed electric hammer comprises shell and places the transmission mechanism that is fixed in the shell on the frame, transmission mechanism to comprise motor, is tight with at motor gear, pinion shaft and cylinder on the motor.Transmission mechanism also comprises hammer drill transmission device and high low speed transmission device.The hammer drill transmission device comprises that close-fitting can be combined into a hammer drill clutch fitting over the clutch gear on the pinion shaft with the reduction gearing of motor gear engagement, fork and the pine that is sleeved on the pinion shaft on the pinion shaft with fork when clutch gear is allocated to the fork side successively; High low speed transmission device comprises that the high speed pinion, the close-fitting that fit on little through rotatable little axle, low speed pinion, the pine of close-fitting on little axle that is positioned on the frame of bearing fit over the high speed gear wheel on the cylinder at low speed gear wheel on the cylinder and pine; High speed pinion and high speed gear wheel are in the axial maintenance interlock of little axle; High speed pinion and the engagement of high speed gear wheel; Low speed pinion and the engagement of low speed gear wheel; Can be combined into a low-speed clutch with low speed pinion when the high speed pinion is allocated to the low speed pinion side, the high speed gear wheel can be combined into a high-speed clutch with cylinder when the high speed pinion was allocated to away from the low speed pinion side; Pinion shaft and high speed pinion are to realize transmission of power.
Further, said clutch gear combines with fork, for the teeth groove of clutch gear end face cooperatively interacts with the teeth groove of the corresponding regional end face of fork.Thereby structure is simpler, and cost is lower, simultaneously again can convenient clutch gear combine with fork or separate, and the combination effect is better.
Further, said high speed pinion combines with low speed pinion, for the teeth groove of high speed pinion end face cooperatively interacts with the teeth groove of the corresponding regional end face of low speed pinion.Thereby structure is simpler, and cost is lower, simultaneously again can convenient high speed pinion combines with low speed pinion or separates, and combine effect better.
Further, said high speed gear wheel combines with cylinder, for the teeth groove of high speed gear wheel end face cooperatively interacts with the teeth groove of the corresponding regional end face of cylinder.Thereby structure is simpler, and cost is lower, simultaneously again can convenient high speed gear wheel combines with cylinder or separates, and combine effect better.
Further; Also comprise toggle mechanism; Toggle mechanism comprises can control the hammer drill toggle device that clutch gear separates with fork or combines; And can control the high low speed toggle device that the high speed gear wheel separates with low speed pinion with cylinder, high speed pinion or combines, be installed on respectively on the side wall of outer shell of pinion shaft side and little axle side.Thereby can make things convenient for, accurate and effective hammer drill, low speed and the high-speed clutch controlled.
Further, said hammer drill toggle device and high low speed toggle device include toggle, slide block, back-moving spring and swing arm; Toggle can drive slide block, and slide block is adjacent to side wall of outer shell by back-moving spring and slides, and slide block can drive swing arm and do rotation or rectilinear motion, and the groove on gear or the gear slip cap is aimed in the swing arm working end, but handsetting gear slides vertically.Thereby at first, realize accurately and reliably stirring function, structure is then very simple and with low cost; Secondly; Owing to be applied with spring force on the slide block; Even the situation that appearance can't combine quickly; Also need not to apply action again,, when the corresponding situation that can't quickly combine disappears one by one, depend merely on the gear that uses as clutch of stirring that spring force can be reliable and stable and make it to combine because gear is what continue to be rotated; The 3rd, the service life that can improve the gear that acts on.
Further, said shell assistant is being made up of passive inside piece and the inboard lateral film closure that can make accessory case.Thereby more help assistant when playing a supportive role, being convenient to electric hammer and use hand to electric hammer grip with fixing in, can hold annexes such as drill bit again, be easy to carry, and be user-friendly to.
Further, said interior lateral film is processed by elastomeric material, and interior lateral film connects with the engaging mode.Thereby further reduce cost, and combine firmly.
Further, said inside piece links to each other with the bottom with cover top portion, but lateral film is the accessory case of outward turning, and lateral film is articulated in outer casing bottom.Thereby use conveniently, and combine more firm.
Further, it is flat under the epirelief that said inside piece is, and lateral film is corresponding with inside piece, is the top of little indent and the bottom of the big indent of plate with cover.Thereby use conveniently, and be easy to hold annex such as drill bit, and combine more firm.
Adopt the present technique scheme, the present invention obtains following useful technique effect:
1, a tractor serves several purposes: common charging electric hammer has only brill and hammers 2 kinds of functions into shape; Adopt the present technique scheme; The high low speed that can realize electric hammer switches and the switching of hammer drill function; And then have low speed hammer drill state, high speed hammer drill state, cutter state, low speed brill state and five kinds of functions of high speed drill state, and switch simple, convenient, convenient, accurate;
2, the efficient of every kind of function has been optimized in the switching of high low speed and hammer drill function.Obtain following effect through test: drill steel of (1) high speed drill function or timber efficient are bored function than single speed electric hammer and are improved more than 10%; Output button moment ratio single speed electric hammer improved 15.5% when (2) low speed bored; (3) bore efficient raising 15% when mixing earth;
3, selection is various, and with strong points, is fit to the user and under different user modes, optimizes various functions: he can use the high energy rate forging hammer pattern to improve operating rate when beating the fragment of brick of soft material like the user, can use low speed hammer pattern when beating hard rock;
4, adopt such scheme, further protected drill bit, improved the service life of drill bit;
5, energy savings.Because improved the operating efficiency of various operating modes, so can make a call to the mixed earth hole more than 15% under the situation of same power brick more.
In order further to explain technical scheme of the present invention, the present invention is done further detailed description below in conjunction with accompanying drawing and embodiment.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention;
Fig. 2 is a kind of structural representation of side-looking of the present invention
Fig. 3 is another structural representation of the present invention;
Fig. 4 is another structural representation of the present invention;
Fig. 5 is the structural representation of transmission mechanism of the present invention;
Fig. 6 is a kind of structural representation of toggle of the present invention mechanism;
Fig. 7 is a kind of structural representation of toggle of the present invention mechanism side-looking;
Fig. 8 is another structural representation of toggle of the present invention mechanism;
Fig. 9 is a kind of structural representation of low speed hammer state of the present invention;
Figure 10 is a kind of structural representation of high energy rate forging hammer state of the present invention;
Figure 11 cuts a hole a kind of structural representation of state for the present invention;
Figure 12 bores a kind of structural representation of state for low speed of the present invention;
Figure 13 is a kind of structural representation of high speed drill state of the present invention;
Figure 14 is the user mode figure of shell assistant handle of the present invention.
Fig. 1-5, Fig. 9-13 accompanying drawing number: motor 1, motor gear 2, reduction gearing 3, clutch gear 4, fork 5, pinion shaft 6, high speed pinion 7, high speed gear wheel 8, low speed pinion 9, low speed gear wheel 10, piston 11, cylinder 12, bearing 13, little axle 14.
Fig. 6-8 accompanying drawing number: slide block 1, electric hammer shell 2, back-moving spring 3, swing arm 4, toggle 5.
Figure 14 accompanying drawing number: lateral film 1, inside piece 2.
The specific embodiment
Below in conjunction with accompanying drawing to enforcement further detailed description of the present invention.
To shown in Figure 14, is preferred embodiment of the present invention like Fig. 1.
To shown in Figure 4, a kind of multi-functional double speed electric hammer comprises shell and places the transmission mechanism that is fixed in the shell on the frame, transmission mechanism to comprise motor, is tight with at motor gear, pinion shaft and cylinder on the motor like Fig. 1.Foregoing is the common technique in this field, so repeat no more.
To shown in Figure 5, transmission mechanism also comprises hammer drill transmission device and high low speed transmission device like Fig. 1.The hammer drill transmission device comprises that close-fitting can be combined into a hammer drill clutch fitting over the clutch gear on the pinion shaft with the reduction gearing of motor gear engagement, fork and the pine that is sleeved on the pinion shaft on the pinion shaft with fork when clutch gear is allocated to the fork side successively.Clutch gear combines with fork, and multiple choices can be arranged, and in the present embodiment, for teeth groove cooperates, promptly the teeth groove of clutch gear end face cooperatively interacts with the teeth groove of the corresponding regional end face of fork.Thereby structure is simpler, and cost is lower, simultaneously again can convenient clutch gear combine with fork or separate, and the combination effect is better.Said fork can be a fork itself only, also can be the combination of fork and Oscillating lever bearing, and this is the state of the art, repeats no more here.
High low speed transmission device comprises that the high speed pinion, the close-fitting that fit on little through rotatable little axle, low speed pinion, the pine of close-fitting on little axle that is positioned on the frame of bearing fit over the high speed gear wheel on the cylinder at low speed gear wheel on the cylinder and pine; High speed pinion and high speed gear wheel are in the axial maintenance interlock of little axle; High speed pinion and the engagement of high speed gear wheel; Low speed pinion and the engagement of low speed gear wheel; Can be combined into a low-speed clutch with low speed pinion when the high speed pinion is allocated to the low speed pinion side, the high speed gear wheel can be combined into a high-speed clutch with cylinder when the high speed pinion was allocated to away from the low speed pinion side.Said high speed pinion combines with low speed pinion; The high speed gear wheel combines with cylinder; Multiple choices can be arranged, in the present embodiment, all take teeth groove to cooperate; The teeth groove that is high speed pinion end face cooperatively interacts with the teeth groove of the corresponding regional end face of low speed pinion, and the teeth groove of high speed gear wheel end face cooperatively interacts with the teeth groove of the corresponding regional end face of cylinder.Thereby structure is simpler, and cost is lower, simultaneously again can convenient high speed pinion combines with cylinder with low speed pinion or high speed gear wheel or separates, and combine effect better.
Teeth groove in the above-mentioned clutch cooperates, and the lug boss of its teeth groove can have multiple choices, as being two types, also can be three types, adopts two types in the present embodiment, and effect better and cost is lower.
Pinion shaft and high speed pinion are to realize transmission of power.
Like Fig. 6, Fig. 7, Fig. 9 to shown in Figure 13; Also comprise toggle mechanism; Toggle mechanism comprises can control the hammer drill toggle device that clutch gear separates with fork or combines; And can control the high low speed toggle device that the high speed gear wheel separates with low speed pinion with cylinder, high speed pinion or combines, be installed on respectively on the side wall of outer shell of pinion shaft side and little axle side.Thereby can make things convenient for, accurate and effective hammer drill, low speed and the high-speed clutch controlled.
Said hammer drill toggle device and high low speed toggle device include toggle, slide block, back-moving spring and swing arm; Toggle can drive slide block, and slide block is adjacent to side wall of outer shell by back-moving spring and slides, and slide block can drive swing arm and do rotation or rectilinear motion, and the groove on gear or the gear slip cap is aimed in the swing arm working end, but handsetting gear slides vertically.Said gear can be stirred by swing arm, also can be that gear is enclosed within on the steel axle through slip cap, and slip cap is stirred by swing arm.Thereby at first, realize accurately and reliably stirring function, structure is then very simple and with low cost; Secondly; Owing to be applied with spring force on the slide block; Even the situation that appearance can't combine quickly; Also need not to apply action again,, when the corresponding situation that can't quickly combine disappears one by one, depend merely on the gear that uses as clutch of stirring that spring force can be reliable and stable and make it to combine because gear is what continue to be rotated; The 3rd, the service life that can improve the gear that acts on.
Shown in figure 14, said shell assistant is being made up of passive inside piece and the inboard lateral film closure that can make accessory case.Thereby be more conducive to assistant when playing a supportive role, being convenient to electric hammer and use hand to electric hammer grip with fixing in, can hold annexes such as drill bit again, be easy to carry, and be user-friendly to.Because outer shape does not change yet after the interior lateral film closure, the change of doing is inside, so can not influence user's feel, can also strengthen feel on the contrary.The material and the connected mode of lateral film can have multiple choices in said.In the present embodiment, process by elastomeric material, interior lateral film connects with the engaging mode.Thereby further reduce cost, and combine firmly.Said inside piece links to each other with the bottom with cover top portion, but lateral film is the accessory case of outward turning, and lateral film is articulated in outer casing bottom.Thereby use conveniently, and combine more firm.Interior lateral film specifically in shape, also unrestricted, in the present embodiment, it is flat that said inside piece is under the epirelief, lateral film is corresponding with inside piece, is the top of little indent and the bottom of the big indent of plate with cover.Thereby use conveniently, and be easy to hold annex such as drill bit, and combine more firm.
To shown in Figure 13, the operation principle of present technique scheme is following like Fig. 9:
The hammer drill function is switched: stir clutch gear through hammer drill toggle device, make electric hammer do hammer motion or brill motion thereby clutch gear is combined with fork or separate.
High speed functions is switched: stir the high speed pinion through high low speed toggle device; High speed pinion and low speed pinion are combined or thereby to separate the low speed gear wheel that makes electric hammer stressed or the high speed gear wheel is stressed, finally drive cylinder and do low speed or high speed rotary motion.
Through the various combination of above-mentioned functions, thereby can realize that low speed hammer state, high energy rate forging hammer state, cutter state, low speed bore state and high speed drill state.
The concrete operation principle of each function:
As shown in Figure 9, low speed hammer state: motor 1 is transferred to motor gear 2 and is transferred to reduction gearing 3 and is transferred to pinion shaft 6 and is transferred to clutch gear 4; Clutch gear 4 combines with fork 5, and fork 5 promotes piston 11 and moves reciprocatingly, and piston 11 cooperates the formation impact function with cylinder 12; Pinion shaft 6 is transferred to high speed pinion 7 again simultaneously, and high speed pinion 7 combines with low speed pinion 9, and low speed pinion 9 is transferred to low speed gear wheel 10, and low speed gear wheel 10 is transferred to cylinder 12, the output low-speed rotation.Thereby finally export low speed hammer function.
Shown in figure 10, high energy rate forging hammer state (can do hammer use): motor 1 is transferred to motor gear 2 and is transferred to reduction gearing 3 and is transferred to pinion shaft 6 and is transferred to clutch gear 4; Clutch gear 4 combines with fork 5, and fork 5 promotes piston 11 and moves reciprocatingly, and piston 11 cooperates the formation impact function with cylinder 12; Pinion shaft 6 is transferred to high speed pinion 7 again simultaneously, and high speed pinion 7 is transferred to high speed gear wheel 8, and high speed gear wheel 8 is transferred to cylinder 12 output high speed rotary motions.Thereby finally export the high energy rate forging hammer function.
Shown in figure 11, the cutter state: motor 1 is transferred to motor gear 2 and is transferred to reduction gearing 3 and is transferred to pinion shaft 6 and is transferred to clutch gear 4; Clutch gear 4 combines with fork 5, and fork 5 promotes piston 11 and moves reciprocatingly, and piston 11 cooperates the formation impact function with cylinder 12; Other clutch separately so be transferred to this position, only forms ballistic motion and micro-low speed rotation at last simultaneously.Thereby final output cutter function.
Shown in figure 12; Low speed bores state: motor 1 is transferred to motor gear 2 and is transferred to reduction gearing 3 and is transferred to pinion shaft 6 and is transferred to high speed pinion 7 again; High speed pinion 7 combines with low speed pinion 9, and low speed pinion 9 is transferred to low speed gear wheel 10, and low speed gear wheel 10 is transferred to cylinder 12; Other clutch separates simultaneously, so only export low-speed rotation.Thereby finally export low speed and bore function.
Shown in figure 13; The high speed drill state: motor 1 is transferred to motor gear 2 and is transferred to reduction gearing 3 and is transferred to pinion shaft 6 and is transferred to high speed pinion 7 again; High speed pinion 7 is transferred to high speed gear wheel 8; High speed gear wheel 8 is transferred to cylinder 12, and other clutch separates simultaneously, so only export high speed rotary motion.Thereby finally export the high speed drill function.
Be further clear technique scheme, specifically describing below, low speed bores state: high low speed toggle is stirred the high speed pinion and is combined with low speed pinion, and brill hammer toggle is stirred clutch and made clutch and fork disengagement simultaneously.At this moment; After motor rotates; Motor gear on the motor output shaft meshes reduction gearing and then orders about pinion shaft and rotate, pinion shaft engagement high speed pinion, high speed pinion low speed pinion; Low speed pinion engagement low speed gear wheel finally orders about cylinder and rotates (the low speed gear wheel is fixed on the cylinder).
Adopt technique scheme: at first; A tractor serves several purposes: common charging electric hammer has only brill and hammers 2 kinds of functions into shape; Adopt the present technique scheme; The high low speed that can realize electric hammer switches and the switching of hammer drill function, and then has low speed hammer drill state, high speed hammer drill state, cutter state, low speed brill state and five kinds of functions of high speed drill state, and switches simple, convenient, convenient, accurate; Secondly, the efficient of every kind of function has been optimized in the switching of high low speed and hammer drill function, and obtain following effect through test: drill steel of (1) high speed drill function or timber efficient are bored the function raising more than 10% than single speed electric hammer; Output button moment ratio single speed electric hammer improved 15.5% when (2) low speed bored; (3) bore efficient raising 15% when mixing earth; The 3rd, select variously, and with strong points, be fit to the user and under different user modes, optimize various functions: he can use the high energy rate forging hammer pattern to improve operating rate when beating the fragment of brick of soft material like the user, can use low speed to hammer pattern into shape when beating hard rock; The 4th, adopt such scheme, further protected drill bit, improved the service life of drill bit; Five, energy savings because improved the operating efficiency of various operating modes, so can make a call to the mixed earth hole more than 15% under the situation of same power brick more.
Above various gears; When being that close-fitting is on axle the time; But being transmission of power but can not endwisely slip between spindle and gear, when pine fits over axle last time, but then is transmission of power and endwisely slipping between spindle and gear; Because this transmission of power design is the prior art that this field is known, and just repeats no more here.
The above is merely specific embodiment of the present invention, is not the restriction to this case design, and all equivalent variations of doing according to the design key of this case all fall into the protection domain of this case.
Claims (10)
1. multi-functional double speed electric hammer; Comprise shell and place the transmission mechanism that is fixed in the shell on the frame; Transmission mechanism comprises motor, is tight with at motor gear, pinion shaft and cylinder on the motor, it is characterized in that: transmission mechanism also comprises hammer drill transmission device and high low speed transmission device; The hammer drill transmission device comprises that close-fitting can be combined into a hammer drill clutch fitting over the clutch gear on the pinion shaft with the reduction gearing of motor gear engagement, fork and the pine that is sleeved on the pinion shaft on the pinion shaft with fork when clutch gear is allocated to the fork side successively; High low speed transmission device comprises that the high speed pinion, the close-fitting that fit on little through rotatable little axle, low speed pinion, the pine of close-fitting on little axle that is positioned on the frame of bearing fit over the high speed gear wheel on the cylinder at low speed gear wheel on the cylinder and pine; High speed pinion and high speed gear wheel are in the axial maintenance interlock of little axle; High speed pinion and the engagement of high speed gear wheel; Low speed pinion and the engagement of low speed gear wheel; Can be combined into a low-speed clutch with low speed pinion when the high speed pinion is allocated to the low speed pinion side, the high speed gear wheel can be combined into a high-speed clutch with cylinder when the high speed pinion was allocated to away from the low speed pinion side; Pinion shaft and high speed pinion are to realize transmission of power.
2. a kind of multi-functional double speed electric hammer as claimed in claim 1, it is characterized in that: said clutch gear combines with fork, for the teeth groove of clutch gear end face cooperatively interacts with the teeth groove of the corresponding regional end face of fork.
3. a kind of multi-functional double speed electric hammer as claimed in claim 1 is characterized in that: said high speed pinion combines with low speed pinion, for the teeth groove of high speed pinion end face cooperatively interacts with the teeth groove of the corresponding regional end face of low speed pinion.
4. a kind of multi-functional double speed electric hammer as claimed in claim 1 is characterized in that: said high speed gear wheel combines with cylinder, for the teeth groove of high speed gear wheel end face cooperatively interacts with the teeth groove of the corresponding regional end face of cylinder.
5. a kind of multi-functional double speed electric hammer as claimed in claim 1; It is characterized in that: also comprise toggle mechanism; Toggle mechanism comprises can control the hammer drill toggle device that clutch gear separates with fork or combines; And can control the high low speed toggle device that the high speed gear wheel separates with low speed pinion with cylinder, high speed pinion or combines, be installed on respectively on the side wall of outer shell of pinion shaft side and little axle side.
6. a kind of multi-functional double speed electric hammer as claimed in claim 5 is characterized in that: said hammer drill toggle device and high low speed toggle device include toggle, slide block, back-moving spring and swing arm; Toggle can drive slide block, and slide block is adjacent to side wall of outer shell by back-moving spring and slides, and slide block can drive swing arm and do rotation or rectilinear motion, and the groove on gear or the gear slip cap is aimed in the swing arm working end, but handsetting gear slides vertically.
7. a kind of multi-functional double speed electric hammer as claimed in claim 1 is characterized in that: said shell assistant is being made up of passive inside piece and the inboard lateral film closure that can make accessory case.
8. a kind of multi-functional double speed electric hammer as claimed in claim 7 is characterized in that: lateral film is processed by elastomeric material in said, and interior lateral film connects with the engaging mode.
9. a kind of multi-functional double speed electric hammer as claimed in claim 8, it is characterized in that: said inside piece links to each other with the bottom with cover top portion, but lateral film is the accessory case of outward turning, and lateral film is articulated in outer casing bottom.
10. a kind of multi-functional double speed electric hammer as claimed in claim 9 is characterized in that: said inside piece is flat under the epirelief, and lateral film is corresponding with inside piece, is the top of little indent and the bottom of the big indent of plate with cover.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210110232.3A CN102649266B (en) | 2012-04-16 | 2012-04-16 | Multifunctional double-speed electric hammer |
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| CN201210110232.3A CN102649266B (en) | 2012-04-16 | 2012-04-16 | Multifunctional double-speed electric hammer |
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| CN102649266A true CN102649266A (en) | 2012-08-29 |
| CN102649266B CN102649266B (en) | 2015-04-08 |
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Cited By (3)
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| CN109262549A (en) * | 2017-07-17 | 2019-01-25 | 博世电动工具（中国）有限公司 | Electric tool |
| CN109909956A (en) * | 2017-11-30 | 2019-06-21 | 株式会社牧田 | Percussion tool and rotation tool |
| WO2021036095A1 (en) * | 2019-08-28 | 2021-03-04 | 浙江信源电器制造有限公司 | Novel electric hammer |
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| CN202607621U (en) * | 2012-04-16 | 2012-12-19 | 制尚电器(浙江)有限公司 | Multi-functional two-speed electric hammer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109262549A (en) * | 2017-07-17 | 2019-01-25 | 博世电动工具（中国）有限公司 | Electric tool |
| CN109262549B (en) * | 2017-07-17 | 2021-04-06 | 博世电动工具（中国）有限公司 | Electric tool |
| CN109909956A (en) * | 2017-11-30 | 2019-06-21 | 株式会社牧田 | Percussion tool and rotation tool |
| WO2021036095A1 (en) * | 2019-08-28 | 2021-03-04 | 浙江信源电器制造有限公司 | Novel electric hammer |
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