CN201824332U - Electric tool - Google Patents
Electric tool Download PDFInfo
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- CN201824332U CN201824332U CN2010205163229U CN201020516322U CN201824332U CN 201824332 U CN201824332 U CN 201824332U CN 2010205163229 U CN2010205163229 U CN 2010205163229U CN 201020516322 U CN201020516322 U CN 201020516322U CN 201824332 U CN201824332 U CN 201824332U
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Abstract
The utility model provides an angle impact direct current tool capable of effectively radiating heat of a power part, comprising a case, a motor arranged in the case, a transmission device and a PCB (printed circuit board), wherein the PCB is provided with power elements; and heat conducting materials are filled between the power element and the case. For the tool, the radiating mode is changed into a conduction mode from an original radiation mode, so that the heat conducting efficiency is higher and the radiating effect is better. A part of the circuit board, provided with the power elements, is completely packed in heat-conducting adhesive so as to simultaneously radiate heat on the circuit board and the elements towards the periphery in a conduction mode. In addition, the requirement on the heat radiation of each power element can be met. The radiation mode adopted by the tool can improve the radiation capability of the power part in sealed and narrow space under the condition that radiating fins are not easy to install, so that the service life of a machine can be ensured, and the reliability of the machine can be enhanced.
Description
Technical field
The present invention relates to a kind of electric tool, particularly relate to the radiator structure that the power component that is used for control circuit in the DC tools is impacted at a kind of angle.
Background technology
Along with percussion tool, particularly impact application that screwdriver, impact wrench, percussion drill isogonism impact DC tools more and more widely, its portability also more and more receives publicity, therefore the small and exquisite and internal structure compactness of the profile of instrument becomes user's first-selection, yet, along with the overall dimensions of the tool body heat that in use produces that has also caused the facility inside that diminishes is difficult to discharge.The thermal source of the inner heat production of facility roughly has the power component on motor, transmission device and the pcb board etc., in the prior art, heating to motor, transmission device, the cooling measure of taking normally with the corresponding casing of heating position on have louvre and heat dissipation channel etc., because of needing to isolate between PCB parts and motor and the gear-box, so structural cooling measures such as louvre and heat dissipation channel are only effective to structure members such as motor, gear-boxes.And because of machine construction is narrow and small, cause the PCB parts to be in the very little space, the heat of power component is difficult to leave, and makes the operating temperature of the components and parts in the PCB parts raise, thereby has reduced the reliability of PCB parts and complete machine work.
Simultaneously, because it is big that the DC tools operating current is impacted at the angle, the power component that inside is used for speed governing generates heat obviously, need in time the heat that power component sent to be shed, the guaranteed output element is worked in lower temperature range, but the speed-regulating control circuit of machine need be resisted the working environment infringement, usually be installed in the confined space, so also just can't cool off power component by air-cooled mode, and, because it is small and exquisite that tool profile requires, and makes the tool interior space quite narrow and small, fin is installed in inconvenience.
Even finned, if fin can not be efficiently the heat of power component is dispersed on the casing, fin can only be with the heat radiation on the power component in the narrow and small local space (air) of power component periphery so, and because casing is airtight, air does not flow, and overall radiating effect is not obvious.Have only the fin of installation closely to prop up power component and casing, ability efficiently is dispersed into the casing surface with the heat of power component (conduction pattern), guarantees better heat radiating effect.But because big city produces strong vibrations during tool work, vibrations can cause fin and power component to produce extruding or bump, make power component be subjected to the mechanical damage inefficacy.
Have more than one power component in the general speed-regulating control circuit, be with each element all with the fin heat radiation, fin required on same machine is more, and perhaps fin is installed difficulty, and cost is higher.
If the heat that power component gives out can not in time shed, can make the components and parts operating temperature rise gradually.Along with gathering of heat, but the temperature of power component can surpass the working range of speed-regulating control circuit, can cause the performance of power component and peripheral element thereof to descend, and serious situation can cause that power component is overheated to be burnt, thereby the reliability decrease that causes machine shortens service life of a machine.
Summary of the invention
For overcoming the defective that prior art exists, the invention provides a kind of angle that the heating of power component effectively can be dissipated and impact DC tools,
For achieving the above object, the present invention is by the following technical solutions:
A kind of electric tool comprises casing, places motor, transmission device and pcb board in the casing, and pcb board is provided with power component, wherein: be filled with Heat Conduction Material between described power component and the described casing.
Described electric tool is that DC tools is impacted at the angle.
Described Heat Conduction Material comprises heat-conducting glue.
The thermal conductivity of described heat-conducting glue is greater than 1.5W/mk.
Be provided with first isolation bar between described motor and the described pcb board.
Be provided with second isolation bar between described transmission device and the described pcb board.
Described pcb board is positioned in the cavity volume that is surrounded by first isolation bar, second isolation bar and the casing.
Be placed with the circuit structure of switch module on the described pcb board.
Impact assembly and output shaft that described transmission device comprises the drive link that extends along fore and aft axis X, links to each other with described main shaft along the main shaft that extends perpendicular to the Y-axis of X-axis, be located at first driving member and second driving member engagement that is located at main shaft one end of an end of described drive link, be located at the gears engaged on the motor output shaft of the pinion of the other end of described drive link and described motor, on described Y direction, described impact assembly and main shaft are positioned at a side of described second driving member, and the fore and aft axis X of described drive link is positioned at the opposite side of described second driving member.
Can realize that equally the another kind of technical measures of above-mentioned purpose are:
A kind of electric tool comprises casing, places motor, transmission device and pcb board in the casing, and pcb board is provided with power component, wherein: be filled with Heat Conduction Material between the position of the installation power element of described pcb board and described casing.
By adopting above technical scheme, the present invention can realize following useful technique effect:
(1) (approach: (approach: power component → Heat Conduction Material → machine shell), heat transfer efficiency is higher, and radiating effect is better power component → air → machine shell) to change the mode of conduction into by original radiation mode for radiating mode.
(2) heat-conducting glue is that the part integral body that wiring board is provided with power component is encapsulated in the heat-conducting glue, heat-conducting glue can with the heat on wiring board and the element simultaneously to around spread in the mode of conduction.Also can reach simultaneously requirement to each power component heat radiation.
(3) heat-conducting glue has filled up peripheral casing, and the contact area between heat-conducting glue and casing is big, thereby area of dissipation is big, and heat radiation evenly.And adopting the mode of fin, the contact area of fin and casing is little, forms concentration of local heat conduction easily, can make the plastic rubber case overheating deforming; If the heat conduction position of fin is positioned at the position of user's handling instrument, too high casing temperature can make the user not feel well, and serious situation can cause the user to scald.
(4) mounting hole site that correspondence is arranged on general required power element of fin or the wiring board is installed, is used to guarantee be close to installation between fin and power component.And the mode of embedding heat-conducting glue does not need to consider the installing hole of element or wiring board, has saved the wiring board area, needn't distinguish the packing forms of power component yet, and optionally the element model is many.
(5) radiating mode that uses among the present invention under the situation that is difficult for the installation fin, can improve the heat-sinking capability of airtight small space internal power components and parts, guarantees the service life of machine, improves the reliability of machine.
Description of drawings
Fig. 1 is the explosive view that DC tools is impacted at the angle of a kind of first-selected embodiment of the present invention;
Fig. 2 impacts the complete machine phantom of DC tools for angle of the present invention;
Fig. 3 is the structural representation of transmission device shown in Figure 2;
Fig. 4 impacts the impact assembly of DC tools and the structural representation of output shaft for angle of the present invention;
Fig. 5 for transmission device shown in Figure 2 around motor output shaft along the schematic diagram that turns clockwise 90 ° the time;
Fig. 6 is transmission device shown in Figure 2 schematic diagram when the motor output shaft edge is rotated counterclockwise 90 °;
Fig. 7 impacts the housing part schematic diagram of DC tools for angle of the present invention;
Fig. 8 impacts the switch module structural representation of DC tools for angle of the present invention;
Fig. 9 impacts the switch module explosive view of DC tools for angle of the present invention.
Each token name is called among the figure:
1-motor 2-drive link 3-output shaft 4-main shaft 5-battery 6-power brick casing 7-switch module 8-pinion 9-the first driving member 10-the second driving member 11-spring 12-lining 13-impact block 14-hammer anvil 15-motor output shaft 16-steel ball 17-PCB plate 18-back-up ring 19-oil sealing 20-clutch shaft bearing 20 '-pad 21-the second bearing 22-the 3rd bearing 23-opening 24-battery capacity indication lamp 25-connection bracket 26-motor bearings 27-motor gear 31-the first gearhousing 32-the second gearhousing 33-gear-box bearing 71-speed regulator 72-ON/OFF switch 73-hollow cylinder 74-switch main body 75 allocating slot 76-speed governing toggle 77-switch spring 100-casing 101-the first chassis body 101 ' the-the second chassis body 102-the first isolation bar 103-the second isolation bar 104-is mounted with the cavity volume 105-heat-conducting glue of pcb board
The specific embodiment
Below in conjunction with the specific embodiment, further set forth the present invention.
Shown in Fig. 1-6, DC tools is impacted at the angle of a kind of first-selected embodiment of the present invention, comprising: casing 100, battery 5, the motor 1 that fixedly place the transmission device in casing 100 internal upper part spaces and fixedly place casing 100 interior central space.
The casing 100 of this angular tool comprises chassis body 100 ' and power brick casing 6.The design of chassis body 100 ' be two lobe formulas, comprise two can be involutory first chassis body 101 and second chassis body 101 ', behind first chassis body 101 and second chassis body 101 ' involutory, its inner surface forms the space that can hold internals.The part of battery 5 is located in the power brick casing 6, constitutes power brick.Power brick be removably connected to chassis body 100 ', when the two connects, the part that battery 5 exposes power brick casing 6 be arranged in chassis body 100 ', it is the lower space that battery 5 is positioned at casing 100, motor 1 is between transmission device and battery, and the outer surface smoother transition of power brick casing 6 and chassis body 100 ' joint, the uniformity and the globality of assurance casing 100 profiles.
Those of ordinary skill in the art is readily appreciated that in other embodiments, casing can also have other structures and structure, and battery 5 also can be made and be fixed on the built-in of casing inside.
Transmission device comprises along the drive link 2 of fore and aft axis X extension, along the main shaft 4 that extends perpendicular to the Y-axis of X-axis, impacts assembly and output shaft 3.The top of drive link 2 is provided with first driving member 9, and the bottom is provided with pinion 8.Motor 1 has motor output shaft 15, and motor gear 15 ' and pinion 8 engagement is arranged on the motor output shaft 15, described motor gear 15 ' and motor bearings 26 be positioned on the motor output shaft 15, motor 1 bottom is provided with and connects support 25.Motor gear 15 ' can directly be formed on the motor output shaft 15, also can be one independently gear be installed on the motor output shaft 15.Drive link 2 combines with pinion 8 by second bearing 21, the 3rd bearing 22 and pad.One end of main shaft 4 is provided with second driving member 10, and the other end is provided with impact block 13, impacts return mechanism and is set between the impact block 13 and second driving member 10, and a side of second driving member 10 is provided with clutch shaft bearing 20.Impact jockey by steel ball 16 and groove combination between impact block 13 and the main shaft 4 is connected.First-selected ground, this impacts return mechanism are that a compression spring 11 is sleeved on the main shaft 4, and in other embodiments, the impact return mechanism can also be the spring, magnetic devices of other adequate types etc., and its installation site also is not limited to be sleeved on the main shaft.First driving member 9 and second driving member, 10 first-selections all are helical gears.The number of teeth of gear ratio first driving member 9 of second driving member 10 is many, and the diameter of second driving member 10 is bigger than the diameter of first driving member 9.In other embodiments, first driving member and second driving member also can be the transmission combinations of worm and gear or bevel gear and bevel gear.Impact block 13 and main shaft 4 have common central axis Y.That side away from spring 11 of impact block 13 is provided with hammer anvil 14, and hammer anvil 14 links to each other with output shaft 3, and the output of output shaft 3 is provided with lining 12.
Impact assembly and comprise impact return mechanism, impact block 13, hammer anvil 14.First-selected ground impacts assembly and main shaft 4 central axis Y altogether.First driving member 9 on the drive link 2 and second driving member 10 on the main shaft 4 have effectively utilized the space of angular tool in impact block 13 these sides in the side engagement away from impact block 13, make more compact structure, have reduced machine dimensions.Drive link 2 rotatablely moves motor 1 output, first driving member 9 through drive link 2 tops passes to second driving member 10 on the main shaft 4, make the direction that rotatablely moves by X-direction rotation around drive link 2 places, be converted to around Y direction rotation along main shaft 4 places, impact jockey between main shaft 4 and the impact block 13 makes main shaft 4 drive impact block at the axial impact that produces along Y-axis when Y-axis is rotated, and rotary impact provides to output shaft 3 the most at last.By this set, the impact energy of impacting assembly is directly delivered on the output shaft 3, makes the impact torsion of angular tool bigger, operating efficiency is higher.
Hammer anvil 14 along Y-axis upwards by pad 20 ', back-up ring 18 is stuck in and realizes on the output shaft 3 and being connected of output shaft 3.Pad 20 ', be used to support hammer anvil 14 for middle metalwork with through hole.The pad first-selection is except through hole, and other parts are solid.Compare with being generally used for rotatably supported bearing, the metal pad is more shock-resistant.Lining 12 is arranged on the end of output shaft 3, can be used for holding and the removably fixing and adaptive various operation elements of this angle impact.First-selected ground, this angular tool are that screwdriver is impacted at the angle, and the operation element first-selection is the screw screwdriver bit, and lining 12 is for being fit to the structure of clamping screw screwdriver bit.In other embodiments, lining can also be made the operation element structure that is fit to clamping impact wrench, percussion drill.
As a further improved embodiment of angular tool of the present invention, transmission device can rotate around the central axis Z of motor output shaft 15, and selectively stops and be fixed on primary importance, the second place and the 3rd position.Shown in Fig. 5,6, wherein with earlier drawings in identical numeral number represent with the front embodiment in identical member.The X-axis of drive link 2 is parallel to the Z axle of motor output shaft 15.Between this second place and the primary importance, between primary importance and the 3rd position on around the direction of Z axle rotation each 90 degree at interval.The transmission device that shows among Fig. 4 is positioned on the primary importance, what Fig. 5 showed is that transmission device primary importance from Fig. 4 is rotated counterclockwise the 90 degree arrival second places around the Z axle, and what Fig. 6 showed is that transmission device primary importance from Fig. 4 turn 90 degrees arrival the 3rd position around the dextrorotation of Z axle.Between first, second, third position, rotate with respect to motor output shaft for the ease of transmission device, the main body 100 of casing ' on above-below direction, be divided into 2 sections, the two junction be provided be rotatably connected part and fixture with realize chassis body 100 ' relatively rotating and relative fixed between two-section up and down.Transmission device by gear housing be fixed on chassis body 100 ' the upper half in, motor 1 be fixed on chassis body 100 ' following half in.During normal the use, transmission device is in primary importance with respect to motor output shaft, whenever necessary, the user can by relative rotation chassis body 100 ' two-section up and down realize transmission device relatively rotating with respect to motor output shaft.Fixture can realize chassis body 100 ' two-section up and down at least in first, second, third locational relative fixed.Those of ordinary skills can expect that in other embodiments, transmission device also can have only first and second positions or the first and the 3rd position with respect to motor output shaft.Connect the design of support 25, boss by connecting support 25 respectively with the groove fit on motor lower portion and battery top, make that three's connection is more firm, when screwdriver was impacted at the angle at the high speed oscillatory work, the electric energy of battery output can stably be transferred in the motor.
Referring to Fig. 1, impact in the DC tools at angle of the present invention, gear-box is made up of three plate gear case shells, for about two (first gearhousing 31, second gearhousing 32) and bottom a slice (gear-box bearing 33).The gear-box bearing 33 of bottom holds the pinion 8 on motor output shaft, the drive link.Gear-box bearing 33 separates with first gearhousing 31, second gearhousing 32 that hold drive link, first and second driving member, impact returning spring, impact block, lining and output shaft, is convenient to make moulding.Gear-box material metal preferably simultaneously is so that heat radiation and keep good assembly precision.
In conjunction with Fig. 8 and Fig. 9, switch module 7 close main shafts of the present invention also are arranged in fuselage integral upper 1/2 to 2/3 length range.Preferably, switch module 7 is arranged in top 1/2 length of casing 100, or the center line Y-axis that is arranged at main shaft 4 to the length of casing 100 bottom surfaces 1/2 in.
During final assembly; only need two half of casings 101,101 ' interior to inject an amount of heat-conducting glue 105 respectively in power component 171 installation positions; because it is to be emulsion state that Heat Conduction Material just has been extruded; certain fluidity is arranged; just easily when assembling, circuit board component is embedded into 105 li of heat-conducting glues; close up casing and locking, filled up heat-conducting glue 105 in whole power component 171, control circuit board and 100 spaces of casing.After treating that heat-conducting glue 105 solidifies, between power component and casing, formed and had good heat-conductivity, transmitted the heat dissipation path of heat with conduction pattern,
Used the radiating mode of this programme, also can be so that the operating temperature of elements on circuit board reduces greatly, when environment temperature is 25 ℃, during the normal running instrument, the operating temperature of power component is 45 ℃～55 ℃, the limit maximum temperature of power component is lower than 90 ℃, satisfies the application need of instrument.
The speed governing power component that uses in the actual tool is MOSFET, and when it is operated under the speed governing state of maximum PWM, and when carrying out stall, limit maximum operating temperature will appear in MOSFET.By this requirement, when environment temperature is 25 ℃, contrast MOSFET surface temperature, the actual data that record, adopting the MOSFET temperature of perfusion heat-conducting glue mode is 80 ℃～88 ℃, is 105 ℃～112 ℃ and do not adopt the MOSFET surface temperature that adds heat sink conception.
The use the technical program can be so that the operating temperature of power component reduces by 15～20 ℃, and the guaranteed output element is worked under suitable temperature, not overheated burning.General failure mode according to electronic component, the electronic component operating temperature descends 10 degrees centigrade, its functional reliability will improve 8-10 doubly, can improve the reliability of electronic component so the assurance electronic component is worked under lower temperature, has also improved the reliability of instrument simultaneously.Heat Conduction Material of the present invention is not limited to heat-conducting glue, in other embodiments, also can be flexible heat conductive pad, heat conductive rubber etc.
In the present embodiment, pcb board 17 is the single piece type structure, in other embodiments, can also be arranged to two-section or three-sectional structure up and down.Have allocating slot 75 on the switch main body, the speed governing toggle 76 of speed regulator is arranged in allocating slot 75, presses or trip switch main body top can be controlled allocating slot 75 and drives speed governing toggles 76 and slide on speed regulator 71, to realize different motor output speeds.Dial and turn round 76 for ease of seeing allocating slot 75 and speed governing clearly, Fig. 9 shows is that speed governing is dialled and turned round 76 and be not contained in the allocating slot 75.Switch main body 74 lower ends have hollow cylinder 73, passing hollow cylinder 73 by screw is rotatably connected switch main body and casing, switch main body the latter half cooperates with the ON/OFF switch, presses or the trip switch lower body part can be controlled the triggering of ON/OFF switch.A switch spring 77 is arranged between switch main body 74 and the PCT plate 17, when operator's trip switch main body it is resetted.When the upper and lower that the operator presses switch main body simultaneously, switch main body triggers ON/OFF switch and speed regulator simultaneously, and screwdriver work is impacted at the angle.When the bottom of careless touch switch main body or top, then only press the ON/OFF switch, perhaps only press the speed governing toggle, the angle is impacted screwdriver and is not all worked, with the danger that prevents that maloperation from bringing.
Switch module is arranged the circuit structure in traditional switch box structure to pcb board, overcome the conventional switch box and taken shortcoming than large space, more save space in the fuselage, the casing that makes the switch module present position be basically perpendicular to spools to footpath the littler of size that make progress.Simultaneously arranging of switch module can make the more close working head of switch main body, thereby makes main gripping position be positioned at the last 1/2 of fuselage, and more close working head makes the user that the control sense more be arranged when operation, also makes machine more steady when working.Simultaneously, tiger grips the position and is designed to the concave surface moulding, and order grips more comfortable.
In the present invention, the electric weight display lamp 24 that screwdriver is impacted at the angle is positioned at the fuselage rear side by following, face the operator during use, and by under the display lamp position make the user at the back that is gripped near arc, when being gripped on the bottom of fuselage when maybe needing to stretch into narrow working region, all can not shelter from the electric weight display lamp because of gripping.
The head that screwdriver is impacted at angle of the present invention all has opening 23 on the casing of the left and right sides, expose the metal-toothed roller box shell of casing inside, makes the heat radiation of gear-box better.
More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (20)
1. an electric tool comprises casing, places motor, transmission device and pcb board in the casing, and pcb board is provided with power component, it is characterized in that: be filled with Heat Conduction Material between described power component and the described casing.
2. electric tool according to claim 1 is characterized in that: described electric tool is that DC tools is impacted at the angle.
3. electric tool according to claim 1 and 2 is characterized in that: described Heat Conduction Material comprises heat-conducting glue.
4. electric tool according to claim 3 is characterized in that: the thermal conductivity of described heat-conducting glue is greater than 1.5W/mk.
5. electric tool according to claim 4 is characterized in that: be provided with first isolation bar between described motor and the described pcb board.
6. according to each described electric tool of claim 5, it is characterized in that: be provided with second isolation bar between described transmission device and the described pcb board.
7. electric tool according to claim 6 is characterized in that: described pcb board is positioned in the cavity volume that is surrounded by first isolation bar, second isolation bar and the casing.
8. electric tool according to claim 3 is characterized in that: the circuit structure that is placed with switch module on the described pcb board.
9. electric tool according to claim 7 is characterized in that: the circuit structure that is placed with switch module on the described pcb board.
10. according to Claim 8 or 9 described electric tools, it is characterized in that: described transmission device comprises the drive link that extends along fore and aft axis X, impact assembly and output shaft that the main shaft that extend perpendicular to the Y-axis of X-axis on the edge links to each other with described main shaft, be located at first driving member and second driving member engagement that is located at main shaft one end of an end of described drive link, be located at the gears engaged on the motor output shaft of the pinion of the other end of described drive link and described motor, on described Y direction, described impact assembly and main shaft are positioned at a side of described second driving member, and the fore and aft axis X of described drive link is positioned at the opposite side of described second driving member.
11. an electric tool comprises casing, places motor, transmission device and pcb board in the casing, pcb board is provided with power component, it is characterized in that: be filled with Heat Conduction Material between the position of the installation power element of described pcb board and described casing.
12. electric tool according to claim 11 is characterized in that: described electric tool is that DC tools is impacted at the angle.
13. according to claim 11 or 12 described electric tools, it is characterized in that: described Heat Conduction Material comprises heat-conducting glue.
14. electric tool according to claim 13 is characterized in that: the thermal conductivity of described heat-conducting glue is greater than 1.5W/mk.
15. electric tool according to claim 14 is characterized in that: be provided with first isolation bar between described motor and the described pcb board.
16. electric tool according to claim 15 is characterized in that: be provided with second isolation bar between described transmission device and the described pcb board.
17. electric tool according to claim 16 is characterized in that: described pcb board is positioned in the cavity volume that is surrounded by first isolation bar, second isolation bar and the casing.
18. electric tool according to claim 13 is characterized in that: the circuit structure that is placed with switch module on the described pcb board.
19. electric tool according to claim 17 is characterized in that: the circuit structure that is placed with switch module on the described pcb board.
20. according to claim 18 or 19 described electric tools, it is characterized in that: described transmission device comprises the drive link that extends along fore and aft axis X, impact assembly and output shaft that the main shaft that extend perpendicular to the Y-axis of X-axis on the edge links to each other with described main shaft, be located at first driving member and second driving member engagement that is located at main shaft one end of an end of described drive link, be located at the gears engaged on the motor output shaft of the pinion of the other end of described drive link and described motor, on described Y direction, described impact assembly and main shaft are positioned at a side of described second driving member, and the fore and aft axis X of described drive link is positioned at the opposite side of described second driving member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205163229U CN201824332U (en) | 2010-09-03 | 2010-09-03 | Electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205163229U CN201824332U (en) | 2010-09-03 | 2010-09-03 | Electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201824332U true CN201824332U (en) | 2011-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205163229U Expired - Fee Related CN201824332U (en) | 2010-09-03 | 2010-09-03 | Electric tool |
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| Country | Link |
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| CN (1) | CN201824332U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107920453A (en) * | 2016-10-07 | 2018-04-17 | 株式会社牧田 | Battery pack and electric working machine |
-
2010
- 2010-09-03 CN CN2010205163229U patent/CN201824332U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107920453A (en) * | 2016-10-07 | 2018-04-17 | 株式会社牧田 | Battery pack and electric working machine |
| US10673106B2 (en) | 2016-10-07 | 2020-06-02 | Makita Corporation | Battery pack and electric working machine |
| CN107920453B (en) * | 2016-10-07 | 2021-02-26 | 株式会社牧田 | Battery pack and electric working machine |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110511 Termination date: 20190903 |
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| CF01 | Termination of patent right due to non-payment of annual fee |