CN102909710A - Power tool - Google Patents
Power tool Download PDFInfo
- Publication number
- CN102909710A CN102909710A CN2012101663883A CN201210166388A CN102909710A CN 102909710 A CN102909710 A CN 102909710A CN 2012101663883 A CN2012101663883 A CN 2012101663883A CN 201210166388 A CN201210166388 A CN 201210166388A CN 102909710 A CN102909710 A CN 102909710A
- Authority
- CN
- China
- Prior art keywords
- output shaft
- working head
- power tool
- connecting axle
- head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
- B23B45/02—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor driven by electric power
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D16/00—Portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F3/00—Associations of tools for different working operations with one portable power-drive means; Adapters therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/003—Stops for limiting depth in rotary hand tools
Abstract
The invention relates to a power tool. The power tool comprises a case, a motor, an output shaft, a transmission mechanism, a working head supporting mechanism and a connecting shaft, wherein the motor is arranged in the case and outputs rotation power; the output shaft is provided with housing holes which are axially formed and are used for containing working heads; the working heads are provided with torque stressed parts with polygonal sections; the transmission mechanism is arranged between the motor and the output shaft and can transmit the rotation power output by the motor to the output shaft; the working head supporting mechanism is provided with a plurality of parallel housing spaces for supporting working heads; the connecting shaft is arranged in the case and can enable the working heads to be in working positions in the housing holes or in housing positions of the working head supporting mechanism; the housing holes comprise torque transmission parts and calibration parts; the torque transmission parts can limit the working heads to rotate relative to the output shaft; the output shaft is provided with elastic pressing devices; the elastic pressing devices at least partially extend into the calibration parts; and when entering the torque transmission parts from the calibration parts, the working heads can rotate relative to the output shaft under the action of the elastic pressing devices.
Description
Technical field
The present invention relates to a kind of power tool, relate in particular to a kind of storage and quick-replaceable drill gun class power tool of realizing working head.
Background technology
In existing drill gun class power tool, generally include electric drill, electric screw driver and percussion drill.
Electric screw driver is for a kind of commonly used electric tool of screw-driving to the workpiece.When needing in the use procedure to tighten the screw of different size, change different working heads according to the difference of screw specification, namely screwdriver bit namely will take off the working head of original installation, then loads onto the working head of another kind of structure.Under the use occasion that needs the frequent working head, brought great inconvenience to the operator, caused the replacing working head loaded down with trivial details on the one hand, the working head that takes off is on the other hand placed easily everywhere and is lost.Although, some storage that can realize working head and quick-replaceables are arranged, because the inherent defect of hand-operated tools in some hand-operated tools, be that moment of torsion is little, operation is hard, so that the operator is easy to fatigue, cause inefficiency, be not suitable in industrial sector, using as professional instrument.
Chinese utility model patent CN201086280Y has disclosed a kind of Multi-tool head electric tool, comprise power tool body and multi-knife-head rotaring wheel structure, the multi-knife-head rotaring wheel structure comprises the multi-knife-head runner cylinder that can accommodate a plurality of cutter heads, multi-knife-head runner cylinder can link to each other with tool body in axial sliding, when multi-knife-head runner cylinder slides into position away from tool body, thereby can select the cutter head that needs by rotation multi-knife-head runner cylinder.But at multi-knife-head runner cylinder during away from tool body, its connecting axle is exposed, dust, powder can enter the inside of electric tool inside or multi-knife-head runner cylinder in the process that multi-knife-head runner cylinder slides, time has been grown and can cause multi-knife-head runner cylinder to rotate to carry out cutter head to select, and perhaps directly causes electric tool to use.And work time working head be to be against on the workpiece, connecting axle need to bear reciprocal active force like this, thus connecting axle can bring the pressure transmission mechanism not to be delivered to connecting axle to moment of torsion to transmission mechanism.
In addition; because electric tool randomness in use; therefore when shutting down on the connecting axle angle of the barrel of installment work head be uncertain; and working head to return the angle of runner cylinder also be uncertain; so in the process of changing working head; just might there be the angle of barrel of connecting axle and the dislocation of working head angle, cause working head can't enter correctly, smoothly the situation of connecting axle.Chinese utility model patent CN201086280Y has also disclosed multi-knife-head runner cylinder and switch gearing, when multi-knife-head runner cylinder slides into position away from tool body, thereby can select the cutter head that needs by rotation multi-knife-head runner cylinder; When tool body was got back in the slip of multi-knife-head runner cylinder, it drove gangbar and moves, and gangbar can press switch and make machine operation, rotates a certain angle sleeve angle is matched with cutter head angle.On the one hand, regular in short-term starter motor easily causes electrical machinery life to shorten or damage; Multi-knife-head runner cylinder and switch gearing need accurately positioning control on the other hand, and cost is higher.
Summary of the invention
For the deficiencies in the prior art, the object of the present invention is to provide a kind of power tool of reliable operation.
The technical solution adopted for the present invention to solve the technical problems is: a kind of power tool comprises: casing; Motor is arranged in the casing, and outputting rotary power; Output shaft has the accepting hole that holds working head of axial setting, and it is polygonal moment of torsion forced section that described working head has the cross section; Transmission mechanism is arranged between motor and the output shaft and also the rotary power of motor output can be passed to output shaft; The working head supporting mechanism is arranged in the casing, and described working head supporting mechanism has several receiving spaces that are set up in parallel for the support works head; Connecting axle is arranged at the collecting position that also can make working head be in the operating position that is positioned at accepting hole in the casing or be positioned at the working head supporting mechanism; Described accepting hole comprises torque transfer part and correction unit, described torque transfer part can be rotated with respect to output shaft by the restraint of labour head, described output shaft is provided with the elasticity pressing device, described elasticity pressing device is at least part of to be stretched in the described correction unit, when working head enters torque transfer part by correction unit, the effect that described working head is subjected to the elasticity pressing device relatively output shaft is rotated.
Preferably, described torque transfer part comprises at least one radial protrusion, described at least one radial protrusion and described moment of torsion forced section against and the restraint of labour head rotate with respect to output shaft.
Preferably, described torque transfer part comprises 12 radial protrusions that evenly arrange, described 12 radial convexes contact with described moment of torsion forced section and the restraint of labour head rotates with respect to output shaft, and the junction surface extension line vertically of two adjacent radial protrusions in the part that described elasticity pressing device stretches into described correction unit and described 12 radial protrusions aligns.
Preferably, described torque transfer part comprises six radial protrusions, described six radial protrusions are six angles of 12 jiaos of stars radially relative even setting wherein, and described elasticity pressing device stretches into the part of described correction unit and aligns with a extension line vertically in described six radial protrusions.
Preferably, pass through arc transition between per two radial protrusions of described six radial protrusions.
Preferably, described torque transfer part is the regular polygon that the cross section of cross section and described moment of torsion forced section matches, and described elasticity pressing device stretches into the part of described correction unit and aligns with at least one side extended surface vertically of torque transfer part.
Preferably, the cross section of the cross section of described torque transfer part and described moment of torsion forced section is the regular hexagon that matches.
Preferably, described elasticity pressing device comprises that part stretches into press part and the flexible member in the described correction unit, and described flexible member is along the radially inside described press part of bias voltage of output shaft.
Preferably, the C type shell fragment of described flexible member for arranging around described output shaft, described press part is arranged at the both sides of described C type shell fragment opening.
Preferably, described flexible member is the shell fragment that axially arranges along output shaft, and an end of described shell fragment is fixed with respect to casing, the described pressure section of other end bias voltage of described shell fragment.
Preferably, described elasticity pressing device comprises flexible member, and described flexible member has the pressure section that stretches in the described correction unit, and described pressure section can be between free state and the bias state along the output shaft radial motion at described flexible member.
Preferably, described flexible member comprises that at least one is positioned at the C shaped steel wire that arranges around described output shaft, and described pressure section is arranged at the both sides of described C shaped steel wire opening.
Preferably, described C shaped steel wire arranges two, distributes along the output shaft axially spaced-apart.
Preferably, two of described two C shaped steel wires pressure sections are along the setting of circumferentially staggering.
Preferably, described flexible member is the shell fragment that axially arranges along output shaft, and an end of described shell fragment is fixed with respect to casing, and described pressure section is arranged at the other end of described shell fragment.
Preferably, described connecting axle is connected between transmission mechanism and the output shaft, and the rotary power that described transmission mechanism is exported motor by described connecting axle passes to output shaft.
Compared with prior art, the invention has the beneficial effects as follows: power tool of the present invention makes by simple structure that working head can enter output shaft smoothly in the process that working head changes, and has guaranteed higher reliability, has lowered simultaneously cost.
Description of drawings
Fig. 1 is the cutaway view of the power tool in preferred the first embodiment of the present invention when in running order.
Fig. 2 is the part three-dimensional exploded view of Fig. 1 medium power instrument.
Fig. 3 is along the phantom of E-E line among Fig. 1.
Fig. 4 is the schematic cross-section of the working head of power tool of the present invention.
Fig. 5 is that schematic diagram is looked on the right side of the output shaft part of the power tool in preferred the first embodiment of the present invention, and wherein working head does not also enter output shaft.
Fig. 6 is similar to Fig. 5, and wherein working head has just entered the correction unit of output shaft.
Fig. 7 is similar to Fig. 5, and wherein working head with output shaft relative rotation occurs under the effect of elasticity pressing device.
Fig. 8 is similar to Fig. 5, and wherein working head enters the torque transfer part of output shaft.
Fig. 9 is that the torque transfer part of the power tool output shaft in preferred the second embodiment of the present invention forms schematic diagram, and wherein two orthohexagonals are rotated 30 degree relatively.
Figure 10 is the profile schematic diagram of the torque transfer part of the power tool output shaft in preferred the second embodiment of the present invention.
Figure 11 is that schematic diagram is looked on the right side of the output shaft part of the power tool in preferred the second embodiment of the present invention, and wherein working head does not also enter output shaft.
Figure 12 is similar to Figure 11, and wherein working head has just entered the correction unit of output shaft.
Figure 13 is similar to Figure 11, and wherein working head enters the torque transfer part of output shaft.
Figure 14 is the profile schematic diagram of the torque transfer part of the power tool output shaft in preferred the 3rd embodiment of the present invention.
Figure 15 is that the power tool in preferred the second embodiment of the present invention is in the cutaway view when changing the working head state.
Figure 16 be among Figure 15 along the phantom of F-F line, wherein working head does not also enter output shaft.
Schematic diagram is looked on the right side of the output shaft part of the power tool in preferred the 3rd embodiment of Figure 17 the present invention, and wherein working head has just entered the correction unit of output shaft.
Figure 18 is similar to Figure 17, and wherein working head with output shaft relative rotation occurs under the effect of elasticity pressing device.
Figure 19 is similar to Figure 17, and wherein working head enters the torque transfer part of output shaft.
Figure 20 is the phantom of the power tool in preferred the 4th embodiment of the present invention when in running order.
Figure 21 is the part three-dimensional exploded view of Figure 20 medium power instrument.
Figure 22 is the phantom of the power tool in preferred the 5th embodiment of the present invention when in running order.
Figure 23 is the phantom of the power tool in preferred the 6th embodiment of the present invention when in running order.
Figure 24 is the phantom of the power tool in preferred the 7th embodiment of the present invention when in running order, and wherein working head has just entered the correction unit of output shaft.
Figure 25 is similar to Figure 24, and wherein working head is crossed the first locking member.
Figure 26 is similar to Figure 24, and wherein working head is crossed the second locking member.
Figure 27 is similar to Figure 24, and wherein connecting axle is crossed the first locking member.
Figure 28 is similar to Figure 24, and wherein output shaft resets and can drive the working head rotation.
Wherein,
1. casing 2. motors 3. transmission mechanisms
4. output shaft 6. batteries 7. press buttones
9. working head 11. handles 13. fore shells
15. gathering sill 21. motor shafts 22. gear-boxes
30. pinion gear mechanism 31. planetary gear reducing mechanisms 40. sleeves
41,41a, 41b. accepting hole 42. radial protrusions 48. locating parts
51. connecting axle 50. fixed blocks 52. storage folders
53. slip lid 131. perforates 221. dividing plates
223. toothed wheel box cover plate 225. arched members 301. first gears
302. the second gear 303. the 3rd gear 461,461a. torque transfer part
462,462a. correction unit 463,463a. radial direction through hole 464.C type shell fragment
465. press part 465a. protuberance 466.C shaped steel wire
467,467a. shell fragment 468. kinks 481. first fastening sections
482. the first release section 483. first accepting grooves, 484. first locking members
485. 486. second release sections of the second fastening section, 487. second accepting grooves
488. the second locking member 489. flexible members 521. working heads are accommodated the storehouse
531. guide rail
The specific embodiment
In the preferred embodiment of power tool of the present invention, power tool is powered screwdriver, difference according to power source can be divided into pneumatic screw driver, screwdriver and electric screw driver surge, direct current and dividing of exchanging are also arranged in the electric screw driver, and the present invention preferably is specifically described as an example of DC electric screwdriver example.
Referring to figs. 1 through shown in Figure 3, this DC electric screwdriver comprises casing 1, motor 2, battery 6, transmission mechanism 3, connecting axle 51, working head supporting mechanism and output shaft 4.Casing 1 is closed up by screw (not shown) by symmetrical two and half housings and assembles, handle 11 parts that it has horizontal component and arranges in obtuse angle with horizontal component, to between 130 degree, meeting was pleasant when gripping handle 11 operated like this at 100 degree for the preferred angle of the present invention.Top in handle 11 parts is provided with press button 7, and battery 6 is fixed on the rear portion of handle 11 parts, and transmission mechanism 3 partial fixings are housed in the horizontal component of casing 1.As preferred embodiment, this battery 6 can be lithium ion battery.Need to prove, said lithium ion battery is that negative material is the general name of the rechargeable battery of elemental lithium here, and according to the difference of positive electrode, it can consist of many systems, such as " lithium manganese " battery, and " lithium iron " battery etc.In the present embodiment, lithium ion battery is that a joint rated voltage is 3.6V(volt) lithium ion battery.Certainly, battery 6 also can be the battery types well known to those skilled in the art such as NI-G, ni-mh.
Motor in the preferred embodiment for the present invention is motor 2, and motor 2 has from electric machine casing extended motor shaft 21 forward.Motor 2 is fixed in the casing 1, one gear-box 22 is fixed in the casing 1 and is positioned at the front portion of motor 2, gear-box 22 is used for accommodating planetary gear reducing mechanism 31 and pinion gear mechanism 30, by dividing plate 221 is set between planetary gear reducing mechanism 31 and pinion gear mechanism 30 the two is separated, and toothed wheel box cover plate 223 is set between gear-box 22 and the working head supporting mechanism, transmission mechanism 3 and working head supporting mechanism can be separated like this, namely transmission mechanism 3 and working head supporting mechanism are separate.But pinion gear mechanism 30 comprises the first gear 301 that is connected with planetary gear reducing mechanism 31 transmitting torques, the 3rd gear 303 that is connected with connecting axle 51 and the second gear 302 that meshes with the first gear 301 and the 3rd gear 303, the second gear 302 passes to the 3rd gear 303 with the rotation of the first gear 301, and the two ends of each gear are supported by axle sleeve.The middle part of dividing plate 221 is provided with the hole that the axle for the first gear 301 passes, the end face of dividing plate 221 is provided with for the groove that axle sleeve is installed, the rear axle housing that supports pinion gear mechanism 30 is fixed on the dividing plate 221, front shaft sleeve is fixed on the toothed wheel box cover plate 223, toothed wheel box cover plate 223 can be fixedly linked by screw, buckle etc. with gear-box 22, so, namely can separate pinion gear mechanism 30 and planetary gear reducing mechanism 31, both can be sealed again simultaneously, prevent that dust, powder etc. from entering transmission mechanism 3 inside, also can prevent the leakage of lubricating oil.In addition, three gears are set just compacter for the inner space that makes instrument, thereby do not affect the attractive in appearance of outside.Certainly, also can be arranged to as required two gears, one links to each other with planetary gear reducing mechanism 31, and another links to each other with connecting axle 51.In addition, transmission mechanism 3 is not limited to above-described form, and transmission mechanism 3 can include only planetary gear reducing mechanism 31, perhaps includes only pinion gear mechanism 30, and perhaps other the transmission mechanism that rotatablely moves is such as ratchet mechanism, turbine mechanism etc.Wherein planetary gear reducing mechanism 31 has three grades of deceleration systems, motor shaft 21 extends and planetary gear reducing mechanism 31 engagements, planetary gear reducing mechanism 31 will rotatablely move and pass to pinion gear mechanism 30, and pinion gear mechanism 30 drives connecting axle 51 rotations, again driver output axle rotation of connecting axle 51.When motor 2 moves like this, by planetary gear reducing mechanism 31, pinion gear mechanism 30, finally by output shaft 4 outputs.This shows, the driving-chain in the present embodiment is motor-transmission mechanism-connecting axle-output shaft, and namely connecting axle is as the part of driving-chain.In addition, reducing gear is slowed down by third-level planetary and the two-stage parallel axis deceleration system consists of the output speed that obtains to want, in other embodiments, and depending on the rotating speed of required output, reducing gear can include only the secondary planet deceleration system, perhaps other deceleration systems.
Slidably be connected with slip lid 53 on the casing 1, slip lid 53 can drive connecting axle 51 and move axially.The edge of slip lid 53 is provided with guide rail 531, and corresponding casing 1 is provided with gathering sill 15, and slip lid 53 is installed in the gathering sill 15 and can slides vertically with respect to casing 1 by its guide rail 531.Certainly, also can be on the slip lid 53 gathering sill to be set, arrange on the casing 1 guide rail mode so that slip lid move.
Connecting axle 51 is six square shafts, on the connecting axle 51 axial restraint be provided with a fixed block 50, the rear end of connecting axle 51 is rotating to be against on the fixed block 50, slip lid 53 can drive connecting axle 51 and move by the mode that links to each other with fixed block 50.Certainly, the mode that slip lid 53 drive connecting axles 51 move also has a lot, as can annular groove around week Monday outside it being set at connecting axle 51, slip lid 53 extend in the annular groove by a pin or steel wire ring and links to each other with connecting axle 51, so neither affect the rotation of connecting axle 51, also do not affect the movement that slip lid 53 drives connecting axle 51.The front end of connecting axle 51 is provided with magnet 511, be used for absorption working head 9, when selecting good berth head 9, can operate slip lid 53 drive connecting axles 51 and pass the working head supporting mechanism, working head 9 is connected magnet 511 absorption on the axle 51, and under the promotion of connecting axle 51, leave the working head supporting mechanism, enter output shaft 4.
Casing 1 comprises the fore shell 13 that is connected to its front end, and the part of working head supporting mechanism is housed in the fore shell 13, and another part is covered by slip lid 53 and exposes along with moving of slip lid 53.The preferred working head supporting mechanism of the present invention is storage cylindraceous folder 52, and convenient rotation takes up room little simultaneously, can certainly be arranged to square, leg-of-mutton, strip, the support shape etc.In electric screw driver work, slip lid 53 and fore shell 13 butts can all be closed storage folder 52 with connecting axle 51 like this.The position of corresponding connecting axle 51 is provided with the hole of passing for connecting axle 51 on the toothed wheel box cover plate 223, around connecting axle 51 Axis Extensions arched member 225 is arranged on the gear-box 22, arched member 225 can be wholely set with gear-box 22, also can divide and be arranged, can connecting axle 51 is partially enclosed by arched member 225 is set, electric screw driver change working head 9 the time, be that the position that slip lid 53 moves to rearmost end also can be exposed out connecting axle 51, can prevent like this inside of the entering tools such as dust, powder.And toothed wheel box cover plate 223 extends to the end face of arched member 225, thereby vertically with transmission mechanism 3 integrally closeds together.In the course of the work, slip lid 53 can be closed storage folder 52, thereby prevent that dust from entering, when needs are changed working head, remove slip lid 53 and can expose storage folder 52, the different working head of convenient selection, so just need slip lid 53 to have certain length, when slip lid 53 moves to operating position with fore shell 13 butts, slip lid 53 and storage part B and driving section C axial overlap, when slip lid 53 moves to the position of replaceable working head, slip lid 53 and motor part D axial overlap, and overlapping with driving section C section axial.Certainly, the mode that slip lid 53 moves is a lot of in addition, such as slip lid 53 rotatable being installed on the casing 1, covering storage folder 52 and is exposing between two positions of storing folder 52 and rotate; Perhaps be similar to the mode of sliding door, can open or closure; Or the mode that is connected in casing 1 that pivots etc., will store folder 52 sealings in the time of can realizing work, will store folder 52 when needing to change working head and expose.
Storage folder 52 rotatable being supported between toothed wheel box cover plate 223 and the output shaft 4, be evenly distributed with a plurality of working heads along its circumferencial direction on the storage folder 52 and accommodate storehouse 521, that is to say that working head has a plurality of receiving spaces, and a plurality of receiving space is set up in parallel along the rotation of storing folder 52.Working head is accommodated storehouse 521 along the 52 axial a part of sealings of storage folder, and a part of excircle opens wide, and can be easy to see from the part of opening wide the shape of working head 9 heads when the handled easily person selects working head 9 like this, thus the working head 9 that quick selection needs.Certainly, those skilled in the art are easy to expect, it also can be totally enclosed that working head is accommodated storehouse 521, only need identify in the position of correspondence, perhaps directly will stores to press from both sides 52 and make transparently, can conveniently identify.In addition, can between storage folder 52 and toothed wheel box cover plate 223, carry out the elasticity location, namely in the position that storage folder 52 is faced corresponding working head 9 on the end face of toothed wheel box cover plate 223 locating slot 522 is set, locating slot 522 is with to accommodate storehouse 521 corresponding, the steel cap that compressed by spring is set on the toothed wheel box cover plate 223, perhaps shell fragment, so, storage folder 52 whenever turns over a working head 9 steel caps or shell fragment all can send the voice prompt that falls into locating slot 522, thereby angle and the connecting axle 51 that can avoid when the operator selects working head 9 storing folder 52 rotations stagger.
Cooperation is with reference to Fig. 4, the cross section of a standard operation shank commonly used is orthohexagonal, it is the moment of torsion forced section that shank forms working head, and output shaft 4 has the accepting hole 41 that axially runs through, accepting hole 41 is arranged to the form of the hexagonal hole that the moment of torsion forced section with working head matches, installment work head makes working head be in the operating position in it, thereby realizes transfer of torque.Certainly, what working head also can the criteria of right and wrong, namely the cross section of moment of torsion forced section is polygonal shape, corresponding accepting hole is arranged to the polygon that matches with the moment of torsion forced section, can realize transfer of torque.Output shaft 4 is supported on by an axle sleeve 40 in the axial aperture 131 of fore shell 13, and axle sleeve 40 provides radial support for output shaft 4, can certainly realize by bearing the radial support of output shaft 4.Connecting axle 51 of the present invention also is hexagon, be provided with hexagonal hole in the 3rd gear 303, be used for connecting with connecting axle 51 and rotary power being passed to connecting axle 51, connecting axle 51 inserts output shaft 4 and can drive output shaft 4 rotations like this, and then by 9 rotations of output shaft 4 drive working heads, working head 9 that like this can Application standard, and need not to offer the hole of accommodating working head 9 at connecting axle 51, the weight and volume of the excessive increase complete machine of connecting axle 51 diameters avoided.Like this, directly drive the output shaft that is of working head 9 rotations, shortened the distance of torque transfer, thereby the use of instrument is more reliable.The above-described mode that indirectly drives the working head rotation for connecting axle by output shaft, but, those skilled in the art are easy to expect that other transmission means substitutes, directly drive the working head rotation such as connecting axle, be but that connecting axle directly is connected with the mode of working head with transmitting torque, perhaps output shaft is driven by direct geared, gets back to the storage folder and connecting axle only is used for releasing working head and drive working head.
When working head 9 entered output shaft 4 under the drive of connecting axle 51, if six side's external forms of working head 9 and output shaft 4 interior hexagonal hole angles stagger, then working head 9 will be stuck and can not enter output shaft 4, can bring very large inconvenience to the operator like this.In order to prevent this from occurring, the present invention is provided with the elasticity pressing device at output shaft 4, makes working head 9 enter smoothly output shaft thereby enter in the process of output shaft by the elasticity pressing device at working head 9 to the relative position adjustment of working head 9 and output shaft.
Fig. 1 to Fig. 8 is elasticity pressing device the first embodiment of the present invention, arrive Fig. 5 with reference to Fig. 3, the accepting hole 41 of output shaft 4 comprises the torque transfer part 461 that drives the working head rotation and the correction unit 462 that makes things convenient for working head to enter vertically, correction unit 462 is circular hole, torque transfer part 461 is hexagonal hole, can make things convenient for like this working head 9 to enter accepting hole 41, the elasticity pressing device is arranged on the position of corresponding correction unit 462, comprise the radial direction through hole 463 that is communicated with accepting hole 41, be housed in the press part 465 in the radial direction through hole 463 and be set on the output shaft 4 the radially C type shell fragment 464 of bias voltage press part 465, press part 465 is under the effect of C type shell fragment 464 at least part of correction unit 462 that extend into accepting hole 41, and press part 465 is arranged at and the axial corresponding position of the extended surface on one of them plane of the hexagonal hole of torque transfer part 461, like this when working head 9 enters correction unit 462, if a plane in six side's outer peripheral faces of working head 9 is axially corresponding with press part 465, working head 9 can directly enter torque transfer part 461 so; Arrive Fig. 8 with reference to Fig. 6, plane and press part 465 in six side's outer peripheral faces of working head 9 axially stagger, working head 9 enters correction unit 462 and radially oppresses press part 465 so, press part 465 compressing C type shell fragments 464 strains, press part 465 also is subject to the opposition of C type shell fragment 464 simultaneously, press part 465 is again at the opposition lower compression working head 9 of C type shell fragment 464, so that produce relatively rotation between working head 9 and the output shaft 4, a plane in six side's outer peripheral faces of working head 9 is axially corresponding with press part 465, this moment, thereby working head 9 can enter torque transfer part 461 smoothly with torque transfer part 461 working head 9 that matches, and C type shell fragment 464 returns back to again original state.
Fig. 9 and Figure 13 have provided the second embodiment of the present invention, the correction unit 462a of output shaft 4 is arranged to square hole, torque transfer part 461a is arranged to 12 jiaos of stars, 12 jiaos of stars in the present embodiment are formed by two orthohexagonal phase differences, 30 degree, like this, torque transfer part 461a has 12 to projecting inward radial protrusion 42, radial protrusion 42 can with the moment of torsion forced section of six sides' working head 9 against and restraint of labour head 9 with respect to output shaft 4 rotations.Press part 465 can be arranged at the position of aliging with the junction surface extension line vertically of two adjacent radial protrusions like this, like this when working head 9 enters correction unit 462a, if a plane in six side's outer peripheral faces of working head 9 is axially corresponding with press part 465, working head 9 can directly enter torque transfer part 461a so; With reference to Figure 12 and Figure 13, plane and press part 465 in six side's outer peripheral faces of working head 9 axially stagger, and working head 9 rotates to radial protrusion 42 with respect to output shaft 4 and fits with one of them face of working head 9 and just can enter torque transfer part 461a under the effect of press part 465 and C type shell fragment 464 so.According to above-mentioned setting, those skilled in the art are easy to expect, a radial protrusion 42 is set at least just can realizes that output shaft drives the rotation of working head, such radial protrusion 42 also can arrange a pair of, radially relative along circumferencial direction, namely symmetrical, it is stressed evenly that thereby working head is output axle 4 driven rotary, can certainly be two pairs or three pairs etc., wherein every pair two all is radially relative, radial protrusion 42 can with one of them face of six sides' working head 9 against and restraint of labour head 9 with respect to output shaft 4 rotations.
Above-described is the radial protrusion 42 of output shaft 4 and the mode of moving working head 9 rotations of 6 contact zones of working head, and working head 9 is stressed even like this, and unit are is stressed little.Certainly, the radial protrusion 42 of output shaft 4 contacts with working head 9 lines also can drive working head 9 rotations, as: the angle that does not limit radial protrusion 42, as long as it can drive working head 9 rotations, press part 465 is arranged at and the axial corresponding position of the extension of radial protrusion 42, can realize that so also working head 9 enters output shaft 4 smoothly.The press part here refers to steel ball, steel column etc., and steel ball can arrange two, as long as one of them is axial corresponding with radial protrusion 42, therefore symmetry or mal-distribution can realize working head enter smoothly output shaft 4.
In the above embodiment, no matter torque transfer part is hexagon or 12 jiaos of stars, and six side's external forms of working head 9 and the torque transfer part of output shaft 4 need fully corresponding, if slightly there is deviation also can cause working head 9 can not enter smoothly output shaft 4.In order to address this problem, Figure 14 has provided the third embodiment of the present invention to Figure 19, torque transfer part is only got 12 odd number or even numbers in the radial protrusion, torque transfer part has six radial protrusions like this, pass through arc transition between per two radial protrusions 42, press part 465 is arranged at and one of them radial protrusion position of aliging, extension vertically, with reference to Figure 17, when six side's external forms and the torque transfer part of working head 9 staggers, working head 9 is stopped by press part 465, working head 9 continues to push ahead, press part 465 forces C type shell fragment 464 strains, simultaneously, C type shell fragment 464 elastic reactions are in press part 465, so that working head 9 and output shaft 4 relative rotations, with reference to Figure 18, a until like this face of working head 9 six side's external forms and the applying of one of them radial protrusion, with reference to Figure 19, working head 9 just can enter the torque transfer part of output shaft smoothly, in fact, very little angle of the relative rotation of 4 needs of working head 9 and output shaft, and arc transition is set leaves enough spaces can for the relative rotation of working head 9 and output shaft 4.Simultaneously, as long as the rib section of working head 9 six side's external forms is torque transfer part that corresponding circular arc portion can directly enter output shaft, that is to say that angle K corresponding to circular arc portion is the nothing interference angular range that working head 9 enters output shaft, K is 30 degree in the present embodiment, such six circular arcs are exactly 180 degree, there is general probability to need not to proofread and correct when that is to say the torque transfer part that working head enters output shaft and directly enters, so just can increase the service life of elasticity pressing device.
Figure 20 to Figure 21 is the 4th kind of embodiment of the present invention, the elasticity pressing device comprises the radial direction through hole 463a that the position that is located at correction unit 462 on the output shaft 4 is communicated with accepting hole 41, one ring like steel wire 466 with opening is set in the position of radial direction through hole 463a on the output shaft 4, ring like steel wire 466 is provided with protuberance 465a, protuberance 465a is contained in the radial direction through hole 463a and part extend in the correction unit 462, preferred radial direction through hole 463a is mounting hole in the present embodiment, its length direction is along the circumferential extension of output shaft, can reduce like this length of output shaft 4, thereby make structure compacter, can certainly be set to as required circle, square etc.When working head 9 entered correction unit 462, if a face in six side's outer peripheral faces of working head 9 is circumferentially corresponding with protuberance 465a, working head 9 can directly enter torque transfer part 461 so; And if face in six side's outer peripheral faces of working head 9 and protuberance 465a circumferentially stagger, thus so working head 9 working head 9 can enter output shaft 4 smoothly so that six side's external forms of working head 9 and torque transfer part 461 match with respect to output shaft 4 rotations under the effect of ring like steel wire 466.
In the above-described embodiment, two radial direction through hole 463a and two corresponding ring like steel wire 466 are set preferably, and along output shaft 4 axially spaced-apart settings, the correcting that like this working head 9 is entered output shaft 4 is further strengthened.In addition, two radial direction through hole 463a circumferentially can be staggered, namely the relative phase difference of two radial direction through hole 463a is less than 30 degree, namely positive and negative 60 degree of the angle at interval are relative phase difference between two radial direction through hole 463a, even so just can guarantee that wherein rib of working head 9 six side's external forms is over against the protuberance of one of them ring like steel wire, and the protuberance of another ring like steel wire just can stagger with other rib of working head six side's external forms, so just can guarantee that working head 9 can both be directed so that the profile of working head 9 and torque transfer part 461 couplings when entering correction unit 462 with arbitrarily angled.
Shown in Figure 22 is the 5th kind of embodiment of the present invention, the elasticity pressing device comprises the radial direction through hole 463 that the position that is located at correction unit 462 on the output shaft 4 is communicated with accepting hole 41, be housed in press part 465 and the shell fragment 467 of bias voltage press part 465 radially in the radial direction through hole 463, the shell fragment 467 here is along output shaft 4 axially extended springs, one end of shell fragment 467 is fixed between output shaft 4 and the casing 1, the other end is the free end of conflict press part 465, the free end of shell fragment 467 can be set to bending, thereby can increase the elastic force of 467 pairs of press parts 465 of shell fragment.Working head 9 enters identical by in the principle of correcting and the first embodiment of output shaft 4 in the present embodiment, repeats no more here.
Shown in Figure 23 is the 6th kind of embodiment of the present invention, the elasticity pressing device comprises that radial direction through hole 463 that the position that is located at correction unit 462 on the output shaft 4 is communicated with accepting hole 41 and part are housed in radial direction through hole 463 and extend into shell fragment 467a in the correction unit 462, the end of shell fragment 467a is fixed between output shaft 4 and the casing 1, the other end is the free end with kink 468, wherein kink 468 extend in the correction unit 462, the kink 468 here is equivalent to press part, and namely press part and elastic component are wholely set the effect that also can realize the correcting working head.
Figure 24 to Figure 28 is the 7th kind of embodiment of the present invention, output shaft 4 has the accepting hole 41b of axial setting in the present embodiment, the accepting hole 41b here is circular hole, output shaft 4 is provided with the first accepting groove 483 that is communicated with accepting hole 41b, contain part in the first accepting groove 483 and extend into one of them circumferential face of the first locking member 484, the first locking members 484 and the edge that is housed in the working head in the accepting hole 41b in the accepting hole 41b against with the rotation of restraint of labour head with respect to output shaft 4.When working head 9 entered output shaft 4, as long as the wherein one side of six side's profiles of working head 9 is corresponding with the first locking member 484, working head 9 just can enter output shaft 4 smoothly, thereby output shaft 4 drives the working head rotation by the first locking member 484.
Realized that by the first accepting groove 483 and the first locking member 484 etc. are set output shaft 4 drives the rotation of working head 9, even output shaft directly by the gear drive rotation, can realize that so just working head enters output shaft smoothly.In order to make connecting axle 51 can drive output shaft 4 rotations, can be at arrange second accepting groove 487 of output shaft 4 settings with the first accepting groove 483 intervals, contain the wherein one side of the six side's external forms that partly extend into interior the second locking member 488, the second locking members 488 of the accepting hole 41a connecting axle 51 interior with extending into accepting hole 41b in the second accepting groove 487 against rotating with drive output shaft 4.Namely as long as the wherein one side of six side's external forms of connecting axle 51 is corresponding with the first locking member 484, connecting axle 51 just can enter output shaft 4 smoothly, thereby connecting axle 51 drives output shaft 4 rotations by the second locking member 488.
But, when the side face of six side's profiles of working head 9 and the first locking member 484 stagger, working head 9 enters output shaft 4 will be stopped by the first locking member 484, the first locking member 484 can be set to and can move radially like this, both allowed working head 9 to enter output shaft 4, output shaft 4 also can drive working head 9 rotations by the first locking member 484 simultaneously.Concrete can arrange locating part 48 between output shaft 4 and fore shell 13, output shaft 4 can move axially with respect to locating part 48, the first locking member 484 is along with limited 48 of the axially-movable of output shaft 4 allows or limit radial movement, on the locating part 48 along the first fastening section 481 and the first release section 482 axially are set, when being allowed to radial motion, can mesh with the first release section 482 by the first locking member 484, when the first locking member 484 is limited radial motion and the engagement of the first fastening section 481, can between output shaft 4 and locating part 48, flexible member 489 be set in addition, output shaft 4 axially-movable compression elastic elements 489, after working head 9 enters output shaft 4, output shaft 4 can return back to the position of the first locking member 484 and 481 engagements of the first fastening section under resilient force, thereby output shaft drives the working head rotation by locking member.
Same, stopped by the second locking member 488 when preventing that connecting axle 51 from entering output shaft 4, can on locating part 48, the second release section 486 and the second fastening section 485 be set the position of corresponding the second locking member 488 vertically, when one of them of connecting axle 51 6 side's external forms when accurate the second locking member 488, can do not stopped, can insert smoothly output shaft 4, connecting axle 51 is blocked in the effect that the second locking member 488 can play hexagonal hole during rotation, rotates together.When the second locking member 488 is aimed at by the rib section of connecting axle 51 6 side's external forms, be subject to stopping of the second locking member 488, connecting axle 51 can overcome elastic force with the second locking member 488 and output shaft 4 and travel forward, the second release section 486 places to locating part 48,488 radial motions of the second locking member and 486 engagements of the second release section, connecting axle 51 enters output shaft 4 smoothly, after the start, connecting axle 51 rotates to its straight flange and 488 pairs of the second locking members are seasonable, under the effect of elastic force, output shaft 4 drives the second locking member 488 and returns back to the position of meshing with the second fastening section 485.
The concrete course of work is as follows, when facing directly of working head 9 six side's external forms aimed at the first locking member 484, can do not stopped, can insert smoothly output shaft 4, if the wherein one side of six side's external forms of connecting axle 51 is also aimed at the second locking member 488, connecting axle 51 also can insert output shaft 4 smoothly, and connecting axle 51 drives output shaft 4 rotations by the second locking member 488 during rotation, and output shaft 4 drives working heads 9 by the first locking member 484 and rotates together.If the wherein one side of six side's external forms of connecting axle 51 staggers with the second locking member 488, connecting axle 51 can overcome elastic force with the second locking member 488 and output shaft 4 and travel forward, until the second locking member 488 is thrown off with the second fastening section 485 of locating part 48,488 radial motions of the second locking member and 486 engagements of the second release section, connecting axle 51 enters output shaft 4 smoothly, after the start, connecting axle 51 is driven to rotate, locating part 48 compresses the second locking member 488 under resilient force, 488 radial motions of the second locking member and the second release section 486 throw off, output shaft 4 drives the second together axially-movable of locking member 488 under resilient force, thereby the second locking member 488 returns back to the position with 485 engagements of the second fastening section, and connecting axle 51 just can drive output shaft 4 by the second locking member 488 and rotate.
When facing directly of working head 9 six side's external forms staggered with the first locking member 484, be subject to stopping of the first locking member 484, working head 9 can overcome elastic force with the first locking member 484 and output shaft 4 and travel forward, until the first locking member 484 is thrown off with the first fastening section 481 of locating part 48,484 radial motions of the first locking member and 482 engagements of the first release section, working head 9 enters output shaft 4 smoothly, at this moment, the second locking member 488 and the second fastening section 485 throw off, no matter whether one of them of six side's external forms of connecting axle 51 is faced directly with the second locking member 488 and is alignd, connecting axle 51 can enter output shaft smoothly, after the start, connecting axle 51 is driven to rotate, working head 9 also can rotate a very little angle under the effect of connecting axle 51 magnet 511, locating part 48 compresses the first locking member 484 and the second locking member 488 under resilient force, rotation along with working head 9 and connecting axle 51, output shaft 4 first locking members 484 and the second locking member 488 return back to the position with the first fastening section 481 and 485 engagements of the second fastening section, so, connecting axle 51 just can drive output shaft 4 by the second locking member 488 and rotate, and output shaft 4 also can drive working head 9 by the first locking member 484 and rotate together.
Above-mentioned definition to each element is not limited in various concrete structures or the shape of mentioning in the embodiment, and those of ordinary skill in the art can replace simply to it with knowing.Can come instead of electr ic motor with gasoline engine or diesel engine etc. such as motor; Working head can be that the cross section is regular arbitrarily polygon; In addition, in the above-mentioned embodiment, moving to axial between connecting axle and the working head storage folder also can be that connecting axle is fixed, and working head storage folder can either also can rotate in axially-movable, and connecting axle also can be and coaxial setting of motor shaft etc.In addition, the elasticity pressing device is mainly used in the relative position of correcting working head and torque transfer part, and to its structure and have no special requirements, visual different interior comes corresponding change configuration, can increase new element, also can reduce unnecessary element.
Claims (12)
1. power tool comprises:
Casing;
Motor is arranged in the casing, and outputting rotary power;
Output shaft has the accepting hole that holds working head of axial setting, and it is polygonal moment of torsion forced section that described working head has the cross section;
Transmission mechanism is arranged between motor and the output shaft and also the rotary power of motor output can be passed to output shaft;
The working head supporting mechanism is arranged in the casing, and described working head supporting mechanism has several receiving spaces that are set up in parallel for the support works head;
Connecting axle is arranged at the collecting position that also can make working head be in the operating position that is positioned at accepting hole in the casing or be positioned at the working head supporting mechanism;
It is characterized in that: described accepting hole comprises torque transfer part and correction unit, described torque transfer part can be rotated with respect to output shaft by the restraint of labour head, described output shaft is provided with the elasticity pressing device, described elasticity pressing device is at least part of to be stretched in the described correction unit, when working head enters torque transfer part by correction unit, the effect that described working head is subjected to the elasticity pressing device relatively output shaft is rotated.
2. power tool as claimed in claim 1, it is characterized in that: described torque transfer part comprises at least one radial protrusion, described at least one radial protrusion and described moment of torsion forced section against and the restraint of labour head rotate with respect to output shaft.
3. power tool as claimed in claim 1 or 2, it is characterized in that: described torque transfer part comprises 12 radial protrusions that evenly arrange, described 12 radial convexes contact with described moment of torsion forced section and the restraint of labour head rotates with respect to output shaft, and the junction surface extension line vertically of two adjacent radial protrusions in the part that described elasticity pressing device stretches into described correction unit and described 12 radial protrusions aligns.
4. power tool as claimed in claim 1 or 2, it is characterized in that: described torque transfer part comprises six radial protrusions, described six radial protrusions are six angles of 12 jiaos of stars radially relative even setting wherein, and described elasticity pressing device stretches into the part of described correction unit and aligns with a extension line vertically in described six radial protrusions.
5. power tool as claimed in claim 4 is characterized in that: pass through arc transition between per two radial protrusions of described six radial protrusions.
6. power tool as claimed in claim 1 is characterized in that: described elasticity pressing device comprises that part stretches into press part and the flexible member in the described correction unit, and described flexible member is along the output shaft inside described press part of bias voltage radially.
7. power tool as claimed in claim 6 is characterized in that: the shell fragment of described flexible member for axially arranging along output shaft, an end of described shell fragment is fixed with respect to casing, the described pressure section of other end bias voltage of described shell fragment.
8. power tool as claimed in claim 1, it is characterized in that: described elasticity pressing device comprises flexible member, described flexible member has the pressure section that stretches in the described correction unit, and described pressure section can be between free state and the bias state along the output shaft radial motion at described flexible member.
9. power tool as claimed in claim 8 is characterized in that: described flexible member comprises that at least one is positioned at the C shaped steel wire that arranges around described output shaft, and described pressure section is arranged at the both sides of described C shaped steel wire opening.
10. power tool as claimed in claim 9, it is characterized in that: described C shaped steel wire arranges two, distributes along the output shaft axially spaced-apart.
11. power tool as claimed in claim 10 is characterized in that: two pressure sections of described two C shaped steel wires are along the setting of circumferentially staggering.
12. power tool as claimed in claim 8 is characterized in that: the shell fragment of described flexible member for axially arranging along output shaft, an end of described shell fragment is fixed with respect to casing, and described pressure section is arranged at the other end of described shell fragment.
Priority Applications (8)
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| CN201210166388.3A CN102909710B (en) | 2011-08-06 | 2012-05-25 | Power tool |
| PCT/CN2012/079689 WO2013020485A1 (en) | 2011-08-06 | 2012-08-03 | Power tool and operating method therefor |
| EP12822060.5A EP2740571B1 (en) | 2011-08-06 | 2012-08-03 | Power tool and operating method therefor |
| EP16158316.6A EP3042740B1 (en) | 2011-08-06 | 2012-08-03 | Power tool and operation method for the power tool |
| KR1020147006160A KR20140054207A (en) | 2011-08-06 | 2012-08-03 | Power tool and operating method therefor |
| EP17154867.0A EP3184260B1 (en) | 2011-08-06 | 2012-08-03 | Power tool |
| US13/628,580 US9421681B2 (en) | 2011-08-06 | 2012-09-27 | Power tool and operation method for the power tool |
| US15/211,825 US10391624B2 (en) | 2011-08-06 | 2016-07-15 | Power tool |
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| CN201210166388.3A CN102909710B (en) | 2011-08-06 | 2012-05-25 | Power tool |
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| CN201210204008.0A Active CN102909703B (en) | 2011-08-06 | 2012-06-20 | Power tool |
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| CN201410494279.3A Active CN104476472B (en) | 2011-08-06 | 2012-07-20 | Power tool and the method for operating for this power tool |
| CN201510185839.1A Active CN104801744B (en) | 2011-08-06 | 2012-07-20 | Power tool and the operating method for the power tool |
| CN201410494661.4A Active CN104385206B (en) | 2011-08-06 | 2012-07-20 | Power tool and the method for operating for this power tool |
| CN201410493616.7A Active CN104385205B (en) | 2011-08-06 | 2012-07-20 | Power tool and for the method for operating of this power tool |
| CN201210252591.2A Active CN102909677B (en) | 2011-08-06 | 2012-07-20 | Power tool |
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| CN201410494279.3A Active CN104476472B (en) | 2011-08-06 | 2012-07-20 | Power tool and the method for operating for this power tool |
| CN201510185839.1A Active CN104801744B (en) | 2011-08-06 | 2012-07-20 | Power tool and the operating method for the power tool |
| CN201410494661.4A Active CN104385206B (en) | 2011-08-06 | 2012-07-20 | Power tool and the method for operating for this power tool |
| CN201410493616.7A Active CN104385205B (en) | 2011-08-06 | 2012-07-20 | Power tool and for the method for operating of this power tool |
| CN201210252591.2A Active CN102909677B (en) | 2011-08-06 | 2012-07-20 | Power tool |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104385206B (en) | 2016-02-17 |
| CN102909702B (en) | 2015-08-19 |
| CN102909702A (en) | 2013-02-06 |
| CN202702198U (en) | 2013-01-30 |
| CN102909703A (en) | 2013-02-06 |
| CN202702200U (en) | 2013-01-30 |
| CN102909678A (en) | 2013-02-06 |
| CN104385205B (en) | 2016-05-18 |
| CN102909676B (en) | 2015-04-22 |
| CN104385205A (en) | 2015-03-04 |
| CN102909709B (en) | 2015-02-04 |
| CN102909679B (en) | 2015-04-22 |
| CN104801744B (en) | 2017-06-16 |
| CN102909703B (en) | 2016-05-18 |
| CN102909701B (en) | 2015-12-30 |
| CN102909676A (en) | 2013-02-06 |
| CN202702199U (en) | 2013-01-30 |
| CN102909678B (en) | 2015-04-22 |
| CN102909701A (en) | 2013-02-06 |
| CN102909710B (en) | 2015-04-22 |
| CN102909677A (en) | 2013-02-06 |
| CN102909709A (en) | 2013-02-06 |
| CN102909677B (en) | 2016-03-30 |
| CN104476472A (en) | 2015-04-01 |
| CN102909679A (en) | 2013-02-06 |
| CN202702201U (en) | 2013-01-30 |
| CN104476472B (en) | 2016-08-24 |
| CN104801744A (en) | 2015-07-29 |
| CN104385206A (en) | 2015-03-04 |
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