CN103963016B - Electric tool and for the method for operating of this electric tool - Google Patents
Electric tool and for the method for operating of this electric tool Download PDFInfo
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- CN103963016B CN103963016B CN201310045957.3A CN201310045957A CN103963016B CN 103963016 B CN103963016 B CN 103963016B CN 201310045957 A CN201310045957 A CN 201310045957A CN 103963016 B CN103963016 B CN 103963016B
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Abstract
The present invention relates to a kind of electric tool, comprising: casing; Motor, is arranged in casing, and outputting rotary power; Output shaft, has the accepting hole that holds working head of axial setting; Transmission mechanism, is arranged between motor and output shaft and the rotary power of motor output can be passed to output shaft; Working head supporting mechanism, has several receiving spaces that are set up in parallel for support works head, and described working head supporting mechanism can be adjusted to different receiving spaces and the axial corresponding position of described accepting hole; Connector, is arranged in casing and can makes working head in being positioned at the operating position and the collecting position that is positioned at working head supporting mechanism of accepting hole; Described electric tool also comprises switching device shifter, described working head supporting mechanism is exercisable moves to another receiving space and the axial corresponding position of described accepting hole from one of them receiving space and the axial corresponding position of described accepting hole, and described switching device shifter changes the rotary speed of described output shaft output.
Description
Technical field
The present invention relates to a kind of electric tool and the method for operating for this electric tool, relate in particular to one and can realize workMake the storage of head and quick-replaceable drill gun class hand held electric tool and for the operation of this drill gun class hand held electric toolMethod.
Background technology
In existing drill gun class hand held electric tool, generally include electric drill, electric drill and percussion drill.
Electric drill is for holing on workpiece, and in operation process, auger spindle rotates constantly. Electric drill is to useIn by screw-driving to a kind of conventional electric tool on workpiece. Conventionally, user need to first bore in the time carrying out operationHole, then the operation of stubborn screw. So, need user to prepare two kinds of dissimilar electric tools, also will constantly more bringThe words that operate will bother very much.
Certainly, operator can prepare two working heads, i.e. screwdriver bit and drill bit, clamps different work by chuckHead is realized first boring, then twists the operation of screw, the working head of original installation be taken off, and then loads onto the work of another kind of structureMake head. Frequently change at needs under the use occasion of working head, brought great inconvenience to operator, caused more on the one handChange jobs loaded down with trivial details, the working head taking off is on the other hand placed easy loss everywhere.
US Patent No. 7367757B2 has disclosed a kind of double-headed electric drill, comprises a chuck and that screwdriver bit is installedThe chuck of individual installation drill bit, two chucks are roughly 90 degree settings and can, around same pivotal point rotation, spiral shell wherein will be installedThe chuck 90-degree rotation of silk screwdriver bit makes screwdriver bit corresponding with main shaft, then this chuck is connected with main shaft and just can realizes the merit of screwdriverCan; Need to change and bore when function, the chuck that screwdriver bit is installed is separated and counter-rotate 90 degree making to install drill bit with main shaftChuck is corresponding with main shaft, and the chuck that drill bit is installed is connected with main shaft and just can realizes the function of brill. So just need to arrange twoChuck, and syndeton permissible accuracy between two chucks and main shaft is high, manufactures difficulty, the overall structure of double-headed electric drillAlso more complicated, volume is large, and cost is high. In addition, operator also wants manual switchover speed after having changed working head, and ratio operatesMore loaded down with trivial details.
Summary of the invention
For the deficiencies in the prior art, the object of the present invention is to provide a kind of electronic work simple in structure, easy to operateTool.
The technical solution adopted for the present invention to solve the technical problems is: a kind of electric tool, comprising: casing; Motor, establishesPut in casing, and outputting rotary power; Output shaft, has the accepting hole that holds working head of axial setting; Transmission mechanism, establishesPut between motor and output shaft and the rotary power of motor output can be passed to output shaft; Working head supporting mechanism, arrangesIn casing, described working head supporting mechanism has several receiving spaces that are set up in parallel for support works head, described inWorking head supporting mechanism can be adjusted to different receiving spaces and the axial corresponding position of described accepting hole; Connector, establishesBe placed in casing and can make working head in being positioned at the operating position of accepting hole and being positioned at accommodating of working head supporting mechanismPosition; Described electric tool also comprises switching device shifter, and described working head supporting mechanism is exercisable from one of them receiving spaceMove to another receiving space and the axial corresponding position of described accepting hole with the axial corresponding position of described accepting hole, described inSwitching device shifter changes the rotary speed of described output shaft output.
Preferably, described receiving space has two, the rotation of exporting when corresponding described two receiving spaces of described output shaftSpeed difference.
Preferably, described two receiving spaces are accommodated respectively screwdriver bit and drill bit, and described working head supporting mechanism is adjustedWhole receiving space and the axial corresponding position of described accepting hole to accommodating drill bit, described connector makes screwdriver bit in accommodatingPosition and drill bit be in operating position, described output shaft output First Speed; Described working head supporting mechanism is adjusted to accommodatesThe receiving space of screwdriver bit and the axial corresponding position of described accepting hole, described connector makes drill bit in collecting position and spiral shellSilk screwdriver bit is in operating position, and described output shaft is exported second speed; Described First Speed is greater than second speed.
Preferably, described transmission mechanism comprises gear drive, and wherein gear drive comprises at least one gear trainPart and a moving member, the change of described working head supporting mechanism position can drive moving member and element different in gear assemblyEngagement is to provide output shaft to export different rotary speeies.
Preferably, described gear drive comprises several rows star-wheel and for supporting the planet carrier of planetary gear, described inMoving member comprises ring gear, and described ring gear engages from different planetary gear and/or planet carrier, described gear drive transmissionGive the rotary speed difference of described output shaft.
Preferably, described switching device shifter comprises the motion conversion being connected between described working head supporting mechanism and moving memberMechanism, described working head supporting mechanism is along transforming by described movement conversion mechanism perpendicular to the axial rectilinear motion of output shaftFor described moving member is along output shaft axially-movable.
Preferably, described movement conversion mechanism comprises the speed switching ring being connected with moving member, described working head support machineStructure can drive speed switch ring rotation.
Preferably, described speed switching ring is provided with First Speed cue mark and instruction second speed of instruction First SpeedThe second speed cue mark of degree, the side of described casing is provided with speed indication window, First Speed cue mark and the second speedOne expose from described indication window selected in the rotation that degree cue mark switches ring along with speed.
Preferably, described movement conversion mechanism also comprises that being arranged on described working head supporting mechanism and speed switches between ringBiasing device, described working head supporting mechanism move make biasing device produce along speed switch ring direction of rotation biasing force withDrive the direction motion of described moving member towards the element engagement different from gear assembly.
Preferably, described biasing device comprises the driving ring and the elastic component that are connected with working head supporting mechanism, described bulletProperty part switch between ring in driving ring and speed, described working head supporting mechanism can drive driving ring to rotate to oppress elasticityPart.
Preferably, described elastic component is provided with two, and two elastic components switch with respect to speed the pivot symmetry of encircling to be establishedPut.
Preferably, it is upper along being circumferentially with stair-stepping speed switching groove that described speed is switched ring, and described speed is switched in grooveSpeed switch piece is installed, and described speed switch piece connects moving member and can in speed is switched groove, move to drive movementPart moves axially.
Preferably, described casing is provided with the operating parts of controlling described connector axially-movable, and described electric tool also wrapsDraw together the automatic switching control equipment regulating in response to the motion of described operating parts and to the position of working head supporting mechanism, described companyFitting axially-movable is to separating with in described several receiving spaces one, and described working head supporting mechanism is at the dress that automatically switchesUnder the effect of putting, move to another one and the axial corresponding position of described output shaft in several receiving spaces.
The present invention provides a kind of method of operating of electric tool simultaneously, and described electric tool comprises: casing; Motor, arrangesIn casing, and outputting rotary power; Output shaft, has the accepting hole that holds working head of axial setting; Transmission mechanism, arrangesBetween motor and output shaft, also the rotary power of motor output can be passed to output shaft; Working head supporting mechanism, is arranged atIn casing, described working head supporting mechanism has several receiving spaces that are set up in parallel for support works head, described workMake head support mechanism and can be adjusted to different receiving spaces and the axial corresponding position of described accepting hole; Connector, arrangesIn casing, also can make working head in being positioned at the operating position and the position of accommodating that is positioned at working head supporting mechanism of accepting holePut; Described electric tool also comprises switching device shifter, described working head supporting mechanism exercisable from one of them receiving space withDescribed accepting hole axially corresponding position moves to another receiving space and the axial corresponding position of described accepting hole, described in cutChanging device changes the rotary speed of described output shaft output, and described method of operating comprises the following steps: 1) operation connector makes itIn a working head in being positioned at the collecting position of working head supporting mechanism; 2) operation element head support mechanism is from accommodating wherein oneThe receiving space of individual working head moves to another receiving space and described accepting hole with the axial corresponding position of described accepting holeAxially corresponding position; 3) working head that, operation connector makes to be housed in another receiving space is in being positioned at accepting holeOperating position, the rotary speed of described output shaft output changes.
Preferably, described casing is provided with the operating parts of controlling described connector axially-movable, and described electric tool also wrapsDraw together the automatic switching control equipment regulating in response to the motion of described operating parts and to the position of working head supporting mechanism, described companyFitting axially-movable is to separating with in described several receiving spaces one, and described working head supporting mechanism is at the dress that automatically switchesUnder the effect of putting, move to another one and the axial corresponding position of described output shaft, described step in several receiving spaces1) method and the step 2 of operation connector) in the method that moves of operation element head support mechanism be operating operation part towards away fromThe direction axially-movable of output shaft; The method that operates connector in described step 3) is the direction of operating operation part towards output shaftAxially-movable.
Compared with prior art, the invention has the beneficial effects as follows: electric tool of the present invention is realized by simple structureThe quick switching of electric drill and screwdriver function, electric tool is exported different rotations according to the different working head of selecting simultaneouslySpeed, easy to operate, improve operating efficiency.
Brief description of the drawings
Fig. 1 is that the direct current multifunction drill in preferred the first embodiment of electric tool of the present invention is when in running orderCutaway view.
Fig. 2 is the part three-dimensional exploded view of the direct current multifunction drill in Fig. 1.
Fig. 3 is direct current multifunction drill in Fig. 1 cross-sectional schematic along E-E line.
Fig. 4 is the cutaway view of the direct current multifunction drill in Fig. 1, and now working head is got back to and accommodated storehouse, connector with accommodateStorehouse separates.
Fig. 5 is direct current multifunction drill in Fig. 4 cross-sectional schematic along F-F line.
Fig. 6 is the cutaway view of the direct current multifunction drill in Fig. 1, and now storage folder moves to another and accommodates the work in storehouseDo the position that head is corresponding with output shaft.
Fig. 7 is direct current multifunction drill in Fig. 8 cross-sectional schematic along G-G line.
Fig. 8 and Fig. 7 are similar, and now another working head of accommodating in storehouse is pushed in output shaft.
Fig. 9 and Fig. 7 are similar, and now automatic switching control equipment resets.
Figure 10 is that direct current multifunction drill in preferred the second embodiment of electric tool of the present invention is in the first workFront view while making state.
Figure 11 is that the direct current multifunction drill in Figure 10 removes the schematic diagram after casing.
Figure 12 is the cutaway view of the direct current multifunction drill in Figure 10.
Figure 13 is direct current multifunction drill in Figure 12 cross-sectional schematic along H-H line.
Figure 14 is that direct current multifunction drill in preferred the second embodiment of electric tool of the present invention is in the second workFront view while making state.
Figure 15 is that the direct current multifunction drill in Figure 14 removes the schematic diagram after casing.
Figure 16 is the cutaway view of the direct current multifunction drill in Figure 14.
Figure 17 is direct current multifunction drill in Figure 16 cross-sectional schematic along I-I line.
Wherein:
1. casing 11. handle 13a. fore shells
14. upper cover 16. indication window 2. motors
21. motor shaft 22. gear-box 210. movable pulleys
211. first paragraph flexible cable 212. second segment flexible cable 2101. fixtures
2102. steady pin 221. dividing plate 223. toothed wheel box cover plates
3a. transmission mechanism 30a. pinion gear mechanism 301a. the first gear
302a. the second gear 303a. the 3rd gear 31a. planetary gear reducing mechanism
310. the first row star-wheel 311. first planet carrier 312. second planetary gears
313. second planet carrier 314. rotation stop device 315. speed rings
316. steel wires overlap 3151. cannelure 34. driving rings
35. stage clip 36. speed are switched ring 341. grooves
361. speed are switched groove 4a. output shaft 40. axle sleeves
403. external tooth 41a. accepting hole 51. connectors
511. magnet 52a. storage folder 521a. accommodate storehouse
526. protruding handle 53. slip lid 531. guide rails
539. stopper slot 55a. engaging piece 58b. pushing blocks
6. battery 7. press button 701. first chutes
702. second chute 723c. straight flange 724c. hypotenuses
725. baffle plate 74c. guide plate 75c. stop columns
79. oscillating deck 791. first pin 792. second pins
9a, 9b. working head
Detailed description of the invention
Electric tool of the present invention preferred embodiment in, electric tool is can realize boring and screwdriver function hand-heldFormula multifunction drill, also has direct current and dividing of exchanging in electric drill, present embodiment is preferably carried out as an example of direct current multifunction drill exampleIllustrate.
Shown in seeing figures.1.and.2, this direct current multifunction drill comprises casing 1, motor 2, battery 6, transmission mechanism 3a, companyFitting 51, working head supporting mechanism and output shaft 4a. Casing 1 is closed by screw (not shown) by symmetrical two and half housingsHold together to assemble handle 11 parts that it has horizontal component and arranges in obtuse angle with horizontal component, the preferred angle of the present inventionAt 100 degree between 130 degree, can be pleasant when gripping handle 11 operates like this. Top in handle 11 parts is provided with buttonSwitch 7, battery 6 is arranged on the bottom of handle 11 parts of casing 1, and transmission mechanism 3a is housed in the horizontal component of casing 1. DoFor preferred embodiment, battery 6 can be both the inside that is fixed on handle 11, also can be mounted in power brick and pass throughPower brick is installed on casing 1, and this battery 6 can be lithium ion battery. It should be noted that, here said lithium ion batteryBe that negative material is the general name of the rechargeable battery of elemental lithium, according to the difference of positive electrode, it can form many systems, as" lithium manganese " battery, " lithium iron " battery etc. Certainly, battery 6 can be also the battery well known to those skilled in the art such as NI-G, ni-mhType.
Transmission mechanism 3a comprises by (taking the right side of drawing as rear) before backward the planetary gear reducing mechanism being driven by motor 231a and pinion gear mechanism 30a, wherein pinion gear mechanism 30a is connected with output shaft 4a and rotatablely moving of motor 2 is passed to defeatedShaft 4a. Working head supporting mechanism is for accommodating different working heads, and the working head here mainly refers to that direct current multifunction drill is normalWith crosspoint tip screwdriver head, flat blade screwdriver bit, drill bit etc., by operation connector 51 move axially through working head supporting mechanism or fromGo into operation and make head support mechanism, just can between different working heads, change fast, thereby electric drill can be holed,Tighten or unclamp different screws.
Motor in the preferred embodiment for the present invention is motor 2, and motor 2 has from electric machine casing extended motor forwardAxle 21. Motor 2 is fixed in casing 1, and a gear-box 22 is fixed in casing 1 and is positioned at the front portion of motor 2, gear-box 22 forAccommodate planetary gear reducing mechanism 31a, casing 1 comprises the fore shell 13 that is connected to its front end, and pinion gear mechanism 30a is housed in fore shellIn 13. Pinion gear mechanism 30a comprises the first gear 301a being connected with planetary gear reducing mechanism 31a, engages with the first gearThe second gear 302a and driven and the 3rd gear 303a of synchronous rotary with it output shaft 4a last week by the second gear 302aTo the fixing external tooth 403 that is provided with, thereby the 3rd gear 303a engages with external tooth 403 and drives output shaft 4a to rotate.
Pinion gear mechanism 30a arranges three gears just in order to make the inner space of instrument compacter, thereby does not affectOutside is attractive in appearance. Certainly, also can be arranged to as required a gear or two gears. In addition, transmission mechanism 3a is notBe confined to above-described form, transmission mechanism can only include planetary gear reducing mechanism 31a, or only includes pinion machineStructure 30a, or other the transmission mechanism that rotatablely moves, as ratchet mechanism, turbine mechanism etc. Wherein motor shaft 21 extends and rowStar gear reduction 31a engagement, planetary gear reducing mechanism 31a will rotatablely move and pass to pinion gear mechanism 30a, pinionThe 30a of mechanism drives output shaft 4a rotation again. When motor 2 moves like this, by planetary gear reducing mechanism 31a, pinion gear mechanism30a, is finally exported by output shaft 4a. This shows, the driving-chain in present embodiment is motor-transmission mechanism-outputAxle, connector is not as a part for driving-chain, and those skilled in the art can expect easily certainly, and driving-chain also canTo be as motor-transmission mechanism-connector-output shaft, connector is as a part for driving-chain. In addition, reducing gear byThird-level planetary slows down and the two poles of the earth parallel axes deceleration system forms to obtain wanted output speed, in other embodiments,Depending on the rotating speed of required output, reducing gear can only include secondary planet deceleration system, or other deceleration systems.
Working head supporting mechanism in present embodiment is preferably the box-like storage folder 52a that is roughly cuboid, storageThe length direction of folder 52a is parallel to the axial of output shaft 4a, and the width of storage folder 52a has been set up in parallel two and has accommodated storehouse521a, accommodates like this in the 521a of storehouse and just can accommodate long working head, such as drill bit, long screwdriver bit etc. Storage folder 52a phaseAxial restraint for casing 1 along output shaft 4a, connector 51 moves axially to drive with respect to casing 1 and is housed in one of themThe working head 9a accommodating in the 521a of storehouse enters output shaft 4a, or connector 51 holds by the magnet 511 that is arranged on its front endWorking head 9a also drives it to turn back to accommodate in the 521a of storehouse, and the connector 51 is here only for releasing or retract working head 9a,Not as the part of driving-chain. Storage folder 52a is supported on casing 1 and is positioned at the top of transmission mechanism 3a, storage folder 52a withPlanetary gear reducing mechanism 31a axial overlap in transmission mechanism 3a and with motor 2 part axial overlaps, can make like this complete machineCompact, save space.
On casing 1, be slidably connected with slip lid 53, the edge of slip lid 53 is provided with guide rail 531, and corresponding casing 1 is provided withGathering sill (figure does not look), slip lid 53 is arranged in gathering sill and can be slid axially with respect to casing 1 by its guide rail 531. Certainly,Also can be, on slip lid 53, gathering sill is set, the mode that guide rail is set on casing 1 moves slip lid 53, logical in present embodimentCrossing mobile slip lid 53 drives connector 51 to move axially.
Storage folder 52a is supported on casing, and in electric drill work, slip lid 53 and fore shell 13a butt, like this can beStorage folder 52a and connector 51 are all closed; When electric drill is changed working head, slip lid 53 separates and is with fore shell 13aMoving working head is got back to and is accommodated storehouse 521a.
Output shaft 4a is form of sleeve, and generally output shaft arranges six sides' accepting hole 41, can installment work in it9a, working head cross section is the hexagon matching with accepting hole 41, can use like this working head 9a of standard. Output shaft 4a is logicalCross bearings on fore shell 13a. Certainly, accepting hole 41 can be also other shapes, as long as it is passable to meet output shaft 4aDrive working head 9a rotation.
The automatic switching control equipment that is provided with automatic switchover working head on the multifunction drill of present embodiment, that is to say onlyOperate slip lid 53 and drive connector 51 to leave to accommodate storehouse 521a, remove the restriction to storage folder 52a motion, storage folder 52a existsThe effect of automatic switching control equipment is moved to the next one and accommodates storehouse 521a and the axial corresponding position of output shaft 4, without operatorManual mobile storage folder 52a selects working head again.
Fig. 1 is to the first embodiment that Figure 9 shows that the preferred direct current multifunction drill of the present invention. Present embodimentIn, automatic switching control equipment comprises the movement conversion mechanism being arranged between storage folder 52a and slip lid 53, slip lid 53 Linear-movings are logicalCrossing movement conversion mechanism drives storage folder 52a along being axially the direction translation of angle, the side of preferred translation with output shaft 4aTo perpendicular to output shaft 4a axially. The movement conversion mechanism here comprises the chute 72c and the pivot that are arranged on slip lid 53Be connected to the oscillating deck 79 of casing 1 upper cover 14, the two ends of oscillating deck 79 form two pins, and wherein the first pin 791 is stuck in and depositsIn the square groove of storage folder 52b, the second pin 792 is arranged in chute 72c and can in chute 72c, slides. Chute 72c has edgeAxial symmetrically arranged two the straight flange 723c of output shaft 4a and the hypotenuse 724c being connected with two straight flanges respectively, two hypotenusesFormation oblique angle, 724c intersection portion, oblique angle portion is with respect to two straight flange 723c evaginations and towards motor 2, and establish at the middle part of chute 72cHave two baffle plates 725, baffle plate 725 is roughly parallel to straight flange 723c, and the distance between two baffle plates 725 is substantially equal to the second pin792 diameter, moves in the track that the second pin 792 can form between two baffle plates 725, two other baffle plate 725 HesDistance between two corresponding straight flange 723c is also the diameter that is substantially equal to the second pin 792, and the second pin 792 can be at gearMotion in the track forming between plate 725 and its corresponding straight flange 723c, two baffle plates 725 are divided into first by chute 72c and slideGroove 701 and the second chute 702. Slip lid 53 head lamp brush guard pivots are connected with guide plate 74c, and guide plate 74c is positioned at chute 72c away from hypotenuseThe position of 724c, guide plate 74c is roughly Y type, and the single head end of Y type guide plate 74c is towards hypotenuse 724c. In chute 72c, be provided withStop column 75c, stop column 75c is positioned at the middle part of the double end end of Y type guide plate 74c, and stop column 75c is fixed on slip lid 53, leadsCan be around the axis rotation perpendicular to chute 72c to plate 74c, like this double end end of Y type guide plate 74c can select one with stopMoving post 75c conflicts, thereby guide plate 74c is stopped post 75c, restriction can only be rotated in certain scope, wherein at guide plateWhen 74c remains on the position contacting with stop column 75c, the single head end of guide plate 74c is less than to the distance of one of them baffle plateThe diameter of two pins 792, is less than the diameter of the second pin 792 to the distance of another baffle plate, can ensure like this second pinIn 792 processes of sliding in chute 72c, can move according to definitive orbit. On stop column 75c, be provided with magnet or stopPost itself is exactly magnetic column, and guide plate 74c is made up of permeability magnetic material, the double end end of guide plate 74c whichsoever with stopPost 75c conflicts and will remain on the position of contact, has ensured that the second pin 792 can enter predetermined track smoothly.
In such scheme, automatically switch working head 9 action by operation slip lid 53 move axially realization, namelyOperation slip lid 53 slides the second pin 792 in chute 72c, before storage folder 52a moves, needs connector 51c and receiptsHold storehouse 521a and separate, and operation connector 51c moves and also moves axially realization by operation slip lid 53, so just needs lead toCrossing operation slip lid 53 moves axially and makes connector 51c after storehouse 521a separates, operate slip lid 53 again and moved axially automatically with accommodatingSwitch, in order to prevent that connector 51c from continuing along with slip lid 53 moves, can make with accommodating after storehouse 521a separates at connector 51cSlip lid 53 idle strokes are slided, and slip lid 53 continues to move axially and the relative casing of connector 51c 1 is fixing, concrete implementationHave a lot, engaging piece 55a is preferably set in present embodiment between slip lid 53 and pushing block 58a, pushing block 58a is connected to engaging piece55a is upper, and engaging piece 55a is stuck in the stopper slot 539 being arranged on slip lid 53, and engaging piece 55a and slip lid 53 pass through bullet verticallyProperty is located by connecting, and engaging piece 55a can overcome resilient force in the interior movement of stopper slot 539 until again located by elasticity, thisSample has just been realized another idle stroke of slip lid 53.
Conventional screwdriver bit length is probably one inch 2.54 centimetres, and the beeline that connector moves is released screwdriver bitStorage folder, the distance of screwdriver bit length that the chances are, and operation slip lid moves 3 centimetres of left and right and can not bring impact to operation, but asThe long efficiency that will affect operator of distance that fruit is mobile, especially 5 centimetres of above distances of operation slip. Present embodimentMiddle storage folder 52a accommodates screwdriver bit or the drill bit that length is grown, and as the screwdriver bit of two inches, storage is pressed from both sides 52a's like thisLength is longer, makes connector 51 need the distance of motion also longer, and when connector 51 separates with accommodating storehouse 521a, slip lid 53 movesMove the rear end of motor 2, can make like this length of complete machine very long, for this reason, in present embodiment slip lid 53 and connector 51 itBetween stroke amplifying mechanism is set, slip lid 53 linear movements drive stroke amplifying mechanisms drive connectors 51 move, thereby connector51 movement travel is greater than the movement travel of slip lid 53, that is to say that the distance moving by slip lid 53 is less than connector 51 and movesDistance realize connector 51 and accommodate storehouse and separate.
Stroke amplifying mechanism is preferably movable pulley mechanism, is the former of resistance arm twice according to movable pulley mechanism medium power armReason, is exaggerated the stroke of connector. Concrete, between slip lid 53 and connector 51, movable pulley 210 is set, movable pulley 210Can be used as the actuator that slip lid 53 drives connector 51 to move, it is upper that movable pulley 210 is arranged on pushing block 58b, pushing block 58b and slip lidBetween 53, idle stroke can be set, certainly, realize if release connector 51 moves through other modes, as button release,Can between pushing block 58b and slip lid 53, idle stroke be set, can directly drive movable pulley 210 straight lines to move by slip lid in other wordsMoving. On movable pulley 210, walk around two sections of flexible cables, the flexible cable is here the general name of rope, band, cable wire, line, wire etc., wherein firstOne end of section flexible cable 211 is fixed on casing 1, and the other end is fixed on the rear portion of connector 51 away from output shaft 4a, preferably endPortion, can realize connector 51 the shortest settings, thereby instrument entirety is compacter. Fixed form can be screw in compression, through machineHole knottings on shell 1 or connector 51 etc., first paragraph flexible cable 211 self-retainings one end on connector 51 is with counterclockwiseOn movable pulley 210, here be less than 360 degree around referring to flexible cable with contacting of movable pulley 210, when slip lid 53 drives moving slidingWhen wheel 210 motion of the direction towards output shaft 4a, movable pulley 210 drives connector 51 to output shaft by first paragraph flexible cable 211The direction motion of 4a, the straight-line distance of connector 51 is the twice of movable pulley 210 straight-line distances. Second segment flexible cableOne end of 212 is fixed on casing, and the other end is fixed on connector 51 closes on the front portion of output shaft 4a, preferably second segment flexible cable212 be fixed on one end on connector 51 connector 51 length 1/4th to 1/2nd between because, in many meritsEnergy electric drill is in the time of operating position, and movable pulley 210 is positioned at connector 51 one end away from output shaft 4a, and 210 need of movable pulley moveThe distance of the part 51 length half that are dynamically connected, connector 51 just can move the distance of its whole length, therefore second segment flexible cable 212 nothingsNeed be fixed on the end that connector 51 closes on output shaft 4a, so just can save the length of flexible cable, thereby reduce cost. SecondSection flexible cable self-retaining one end on connector 51 is walked around movable pulley 210 in a clockwise direction, when slip lid 53 drives movable pulley 210While moving to the direction away from output shaft 4a, movable pulley 210 drives connector 51 output shaft 4a dorsad by second segment flexible cable 212Direction motion, the straight-line distance of connector 51 is the twice of movable pulley 210 straight-line distances.
Below the quick-replaceable process of working head to the preferred direct current multifunction drill of the present invention is elaborated.
Direct current multifunction drill shown in Fig. 1 to Fig. 3 is in running order, when changing the work of another typeWhen 9b, operation slip lid 53 moves along diagram arrow M directions, and slip lid 53 drives pushing block 58a to move by engaging piece 55a, pushing block58b drive movable pulley 210 also backward motion, because of second segment flexible cable 212 on movable pulley 210 around, therefore second segment flexible cable 212 withThe moving belt of movable pulley 210 part 51 that is dynamically connected moves backward, accommodates storehouse 521a until connector 51 drives working head 9b to get back toAnd exit and accommodate storehouse 521a, as shown in Figure 4, the second pin 792 of oscillating deck 79 is along with the slip of slip lid 53 is in chute 72cMove to the position shown in Fig. 5. Now connector 51 is limited cannot continue to retreat, and continues operation slip lid 53 and moves backward, cardDetermine piece 55a overcome resilient force in the interior movement of stopper slot 539 until front side butt the quilt of engaging piece 55a and stopper slot 539Elasticity location again, the second pin 792 of oscillating deck 79 and the single head end in contact of guide plate 74c, the second pin 792 active forces inGuide plate 74c makes it overcome the magnetive attraction attraction of stop column 75c and produce rotation until the another side of double end end is stopped post 75cMagnetic, the second pin 792 is along with the rotation of guide plate 74c is along the border movement of guide plate 74c, and the second pin 792 produces and hangs downStraight in the motion of slip lid 53 moving directions, make oscillating deck 79 around its pivot rotation, the first pin 791 drives storage folder 52aMove to another and accommodate the position that storehouse 521a is corresponding with the accepting hole 41a of output shaft 4a, position as shown in Figure 5 and Figure 6. EdgeThe direction of arrow N moves forward slip lid 53 and resets, slip lid 53 by engaging piece 55a after idle stroke, drive pushing block 58b toFront motion, pushing block 58b drive movable pulley 210 also travel forward, because of first paragraph flexible cable 211 on movable pulley 210 around, therefore firstSection flexible cable 211 is along with the moving belt of movable pulley 210 part 51 that is dynamically connected moves forward, until connector 51 will be accommodated in the 521a of storehouseWorking head 9a advances output shaft 4a and exposes from the front end of output shaft 4a, and the second pin 792 is along with slip lid 53 moves along chuteThe straight flange 723c of 72c moves to position as shown in Figure 8. Continue to move along the direction operation slip lid 53 of diagram arrow N engaging piece55a overcomes resilient force in the interior movement of stopper slot 539 until the rear side butt of engaging piece 55a and stopper slot 539 by rear sideElasticity location, the second pin 792 of oscillating deck 79 slides along the hypotenuse 724c of chute 72c, the second pin 792 produce perpendicular toThe motion of slip lid 53 moving directions, makes oscillating deck around its pivot rotation, and now stores double-layered quilt connector and linkageSpacing cannot movement, slides into opposite side, position as shown in Figure 9 in the square groove of the first pin 791 on storage folder. Automatically cutThe structural principle of changing device is identical with the first embodiment, is not described in detail here.
Repeat above-mentioned steps, just can be replaced with another working head 9a. The movement locus of the second pin in chute 72bMove in circles, in the track that the second pin can form from two baffle plates, move to the first chute 701, then from two baffle platesThereby in the track forming, move to the second chute 702 and form circulation and realize the automatic switchover of working head.
Figure 10 is to the second embodiment that Figure 17 shows that the preferred direct current multifunction drill of the present invention. Present embodimentIn, on direct current multifunction drill, be also provided with speed switching device shifter. Generally, operator, in the time using bit bore, needsWant direct current multifunction drill output high speed low torque; And in the time using screwdriver bit, need the output of direct current multifunction drill lowThe high moment of torsion of speed. In needs switching drill bit and screwdriver bit repeatedly, the switch speed that operator also will be repeatedly, in order to subtractLight work person's labour intensity, the speed switching device shifter in present embodiment can join with the adjustment of storage folder 52b positionMoving, that is to say when the drill bit of selecting as operator carries out work, output shaft is exported at a high speed under the effect of speed switching device shifter;In the time that the screwdriver bit of operator's selection carries out work, output shaft is exported low speed under the effect of speed switching device shifter.
Concrete, planetary gear reducing mechanism 31a comprise formed by the first row star-wheel 310 and the first planet carrier 311 theOne planetary gearsets, the second planetary gearsets being formed by the second planetary gear 312 and the second planet carrier 313, and can axially moveMoving moving member, moving member is one to have the speed ring 315 of internal tooth and end tooth, and the cannelure that holds steel wire cover 316 is set on it3151. When top gear state, the internal tooth of speed ring 315 engages with the second planet carrier 313 and the second planetary gear 312 simultaneously, nowThe output speed of planetary gear reducing mechanism 31a is higher; When low or first gear state, internal tooth while and first planet of speed ring 315Frame 311 and the second planetary gear 312 engage, and its end tooth engages with the rotation stop device 314 on tool housing simultaneously, now planetary gearThe output speed of reducing gear 31a is lower. Certainly, those skilled in the art are easy to expect, according to planetary gear speed-reductionMechanism arranges difference, and speed ring only can be selected and planetary gear engagement or simultaneously engage with planetary gear and planet carrier.
For the conversion of motion that makes storage folder 52b and output shaft be angle is moving axially of speed ring 315, can depositBetween storage folder 52b and speed ring 315, movement conversion mechanism is set, by movement conversion mechanism will store press from both sides 52b along perpendicular toThe axial rectilinear motion of output shaft is converted into speed ring 315 along output shaft axially-movable. Concrete, movement conversion mechanism comprisesSpeed is switched ring 36, and speed is switched on ring 36 and switched groove 361 along being circumferentially with speed, and speed is switched groove 361 for tortuous havingThe shape of ladder, is parallel to each other by two sections, isolated in the axial direction straight trough and the composition of the link slot between two sections of straight troughs.This two ends straight trough is axial perpendicular to output shaft 4a. Steel wire cover 316 can move axially and not rotatable, and steel wire overlaps two ends of 316Portion is positioned at speed and switches groove 361, overlap two ends of 316 and the fit structure of speed switching groove 361 by steel wire, and speed is cutWhen ring change 36 rotates, two ends of steel wire cover 316 are switched in groove 361 and are moved to another section of straight trough from one section of straight trough in speed,Drive steel wire cover 316 to move axially, steel wire cover 316 drives speed ring 315 to move axially then.
When preventing that speed ring 315 from moving and the second planet carrier 313 and the first planet carrier 311 or speed ring 315End tooth can not engage smoothly with the rotation stop device 314 on tool housing, can switch between ring 36 at storage folder 52b and speedBiasing device is set, and storage folder 52b moves and makes biasing device produce biasing force with 36 rotations of compressing speed switching ring, if like thisWhen speed ring 315 does not move to the position of engagement, the biasing force of biasing device is stored, once start button switch 7 makes motor 2Rotation, the position of rotation of each parts of planetary gear reducing mechanism 31a changes, and speed is switched ring 36 and is stored at biasing devicePartial pressure under drive speed ring 315 to move to the position being meshed with geared parts. Concrete, biasing device comprises greatlyCause and be semiorbicular driving ring 34 and stage clip 35, the circumferential middle part of driving ring 34 is provided with groove 341, the end of storage folder 52bPortion is provided with the protruding handle 526 corresponding with groove 341, and in the time that storage folder 52b moves, protruding handle 526 drives driving ring 34 by groove 341Rotation. Stage clip 35 is arranged on driving ring 34 and speed is switched between ring 36, and driving ring 34 switches ring by stage clip 35 drive speed36 rotations. Stage clip 35 arranges two, and two stage clips 35 switch the bilateral symmetry setting of ring 36 with respect to speed, to ensure speed ring315 no matter forward or backward movement can engage smoothly with geared parts.
In addition, in order to make operator can be clearly seen that the speed that direct current multifunction drill is moving, can be in speedOn degree switching ring 36, speed indicator sign note is set, as numeral " 1 " represents low speed, numeral " 2 " represents high speed, and establish the side of casing 1Put rotation that 16, two speed indicator signs of speed indication window note switches ring 36 along with speed and select one reveal from indication window 16Go out.
Below introduce the concrete mode of action of switching from low speed screwdriver function to high speed drill function. If Figure 10 is to Figure 13,While being switched to high speed drill function from low speed screwdriver function, storage folder 52b moves to and accommodates accommodating storehouse 521 and exporting of drill bit 9bThe position that axle 4a is corresponding, the protruding handle 526 on storage folder 52b drives driving ring 34 to rotate, and driving ring 34 is oppressed stage clip 35 and is made speedDegree switches ring 36 and rotates 361 displacements of drive speed switching groove, and two ends of steel wire cover 316 are moved to another from a straight troughBar straight trough, thereby drive steel wire cover 316 to move axially, and then steel wire cover 316 drives speed ring 315 position from front position moves toPut. Complete after switching, speed ring 315 is positioned at rear position.
If Figure 14 is to Figure 17, while being switched to low speed screwdriver feature capability from high speed drill, storage folder 52b moves to and accommodates spiral shellSilk screwdriver bit 9a accommodates the position corresponding with output shaft 4a, storehouse 521, and the protruding handle 526 that storage is pressed from both sides on 52b drives driving ring 34 to rotate,Driving ring 34 is oppressed stage clip 35 and is made speed switch ring 36 rotation drive speed switching groove 361 displacements, by two of steel wire cover 316End moves to another straight trough from a straight trough, thereby drives steel wire cover 316 to move axially, and then steel wire cover 316 drives tuneSpeed ring 315 moves to front position from rear position. Complete after switching, speed ring 315 is positioned at front position.
By above-mentioned fit system, in the time that drill bit 9b is selected, planetary gear reducing mechanism 31a is by defeated higher rotating speedGo out to output shaft 4a, in the time that screwdriver bit 9a is selected, planetary gear reducing mechanism 31a is via slowing down lower rotating speed outputTo output shaft 4a. Wherein to move to select the mode of working head can be manually to stir storage folder 52b to operation store folder 52b, alsoCan move through automatic switching control equipment and drive storage folder 52b to move as operated slip lid 53 in the first embodiment mode, concreteAutomatic switching mode identical with the first embodiment, in operation slip lid 53 axially-movable switch operating heads, change outputThe rotary speed of axle.
Be more than the mode of carrying out mechanically speed switching, those skilled in the art can expect leading to easilyCross electronically controlled mode and also can realize the change of speed, for example, on electric tool, be provided with controller, controller detects and depositsStorage is pressed from both sides the position of 52b and is exported corresponding rotating speed according to the output control motor detecting; Or the mode of dynamo-electric combination,For example controller detection of stored is pressed from both sides the position of 52b and is driven speed ring 315 to move according to the result DM detecting.
The invention still further relates to the method for operating of aforementioned direct current multifunction drill, concrete operating procedure is as follows: 1) operation connectsThe working head that fitting 51 makes to be positioned at accepting hole 41a is accommodated storehouse 521 in what be positioned at storage folder 52a; 2) operation store folder 52aAxially corresponding position move to another and accommodate storehouse 521 and receipts from accommodate storehouse 521 and the accepting hole 41a that accommodate aforementioned working headHold the axially position of correspondence of hole 41a; 3), operation connector 51 makes to be housed in another working head of accommodating storehouse 521 in being positioned atIn accepting hole 41a, the rotary speed of output shaft output changes. The method that operates connector 51 in step 1) is operation slip lid 53 courtsAway from the direction axially-movable of output shaft 4a; Step 2) in the method that moves of operation store folder 52a for operation slip lid 53 towards away fromThe direction axially-movable of output shaft 4a; The method that operates connector 51 in step 3) is the side of operation slip lid 53 towards output shaft 4aTo axially-movable. By the method for operating of aforesaid direct current multifunction drill, only need draw sliding lid, just can realize speedSwitch, change working head simultaneously, easy to operate, can increase work efficiency greatly.
The above-mentioned definition to each element is not limited in various concrete structures or the shape in embodiment, mentioned, this areaThose of ordinary skill can it be known simply and be replaced. As motor can substitute electricity with gasoline engine or diesel engine etc.Machine; Slip lid is used for driving connector or drives storage folder, and its version can have multiple as pull bar, end cap etc.; In addition,In above-mentioned embodiment, moving to axial between connector and storage folder can be also that connector is fixed, and working head is depositedStorage folder can either also can move radially in axially-movable, and connector can be also and coaxial setting of motor shaft etc. In addition, rightIts structure also has no special requirements, and visual different interior carrys out corresponding change configuration, can increase new element, also can subtractFew unnecessary element.
Claims (15)
1. an electric tool, comprising:
Casing;
Motor, is arranged in casing, and outputting rotary power;
Output shaft, has the accepting hole that holds working head of axial setting;
Transmission mechanism, is arranged between motor and output shaft and the rotary power of motor output can be passed to output shaft;
Working head supporting mechanism, is arranged in casing, and described working head supporting mechanism has for several of support works headThe receiving space being set up in parallel;
Connector, is arranged in casing and can makes working head prop up in being positioned at the operating position of accepting hole and being positioned at working headThe collecting position of support mechanism;
It is characterized in that: described working head supporting mechanism is exercisable axially right from one of them receiving space and described accepting holeAnother receiving space and the axial corresponding position of described accepting hole are adjusted in the position of answering, and described electric tool also comprises switchingDevice, described switching device shifter and the interlock of working head supporting mechanism are for adjusting the rotary speed of described output shaft output.
2. electric tool as claimed in claim 1, is characterized in that: described receiving space has two, described output shaft correspondenceThe rotary speed difference of exporting when described two receiving spaces.
3. electric tool as claimed in claim 2, is characterized in that: described two receiving spaces accommodate respectively screwdriver bit andDrill bit, described working head supporting mechanism is adjusted to the receiving space and the axial corresponding position of described accepting hole of accommodating drill bit,Described connector make screwdriver bit in collecting position and drill bit in operating position, described output shaft output First Speed; InstituteState working head supporting mechanism and be adjusted to the receiving space and the axial corresponding position of described accepting hole of accommodating screwdriver bit, described inConnector make drill bit in collecting position and screwdriver bit in operating position, described output shaft output second speed; DescribedOne speed is greater than second speed.
4. electric tool as claimed in claim 1, is characterized in that: described transmission mechanism comprises gear drive, whereinGear drive comprises at least one gear assembly and a moving member, and the change of described working head supporting mechanism position can driveMoving member engages to provide output shaft to export different rotary speeies from elements different in gear assembly.
5. electric tool as claimed in claim 4, is characterized in that: described gear drive comprise several rows star-wheel, withAnd for supporting the planet carrier of planetary gear, described moving member comprises ring gear, described ring gear and different planetary gear and/or rowThe engagement of star frame, described gear drive passes to the rotary speed difference of described output shaft.
6. electric tool as claimed in claim 4, is characterized in that: described switching device shifter comprises that being connected to described working head props upMovement conversion mechanism between support mechanism and moving member, described working head supporting mechanism is along perpendicular to the axial straight line of output shaftMove through described movement conversion mechanism and be converted into described moving member along output shaft axially-movable.
7. electric tool as claimed in claim 6, is characterized in that: described movement conversion mechanism comprises and being connected with moving memberSpeed is switched ring, and described working head supporting mechanism can drive speed switch ring rotation.
8. electric tool as claimed in claim 7, is characterized in that: described speed is switched ring and is provided with instruction First SpeedThe second speed cue mark of First Speed cue mark and instruction second speed, the side of described casing is provided with speed indicating windowMouthful, First Speed cue mark and second speed cue mark along with speed switch ring rotation select one from described indication windowExpose.
9. electric tool as claimed in claim 6, is characterized in that: described movement conversion mechanism also comprises and is arranged on described workMake head support mechanism and speed and switch the biasing device between ring, described working head supporting mechanism moves and makes biasing device produce edgeSpeed is switched the biasing force of ring direction of rotation to drive the direction of described moving member towards the element engagement different from gear assemblyMotion.
10. electric tool as claimed in claim 9, is characterized in that: described biasing device comprises and working head supporting mechanismConnected driving ring and elastic component, described elastic component switches between ring at driving ring and speed, described working head support machineStructure can drive driving ring to rotate to oppress elastic component.
11. electric tools as claimed in claim 10, is characterized in that: described elastic component is provided with two, two elastic component phasesThe pivot that switches ring for speed is symmetrical arranged.
12. electric tools as claimed in claim 6, is characterized in that: it is upper stepped along being circumferentially with that described speed is switched ringSpeed switch groove, described speed is switched in groove speed switch piece is installed, described speed switch piece connects moving member and energyEnough mobile to drive moving member to move axially in speed is switched groove.
13. electric tools as claimed in claim 1, is characterized in that: described casing be provided with control described connector shaft toThe operating parts of motion, described electric tool also comprises in response to the motion of described operating parts the position to working head supporting mechanismThe automatic switching control equipment regulating, described connector shaft separates to one that moves to described several receiving spaces,Described working head supporting mechanism moves to another one and the institute in several receiving spaces under the effect of automatic switching control equipmentState the axially position of correspondence of output shaft.
The method of operating of 14. 1 kinds of electric tools as claimed in claim 1, comprises the following steps: 1) operation connector makes itIn a working head in being positioned at the collecting position of working head supporting mechanism; 2) operation element head support mechanism is from accommodating wherein oneThe receiving space of individual working head moves to another receiving space and described accepting hole with the axial corresponding position of described accepting holeAxially corresponding position; 3) working head that, operation connector makes to be housed in another receiving space is in being positioned at accepting holeOperating position, the rotary speed of described output shaft output changes.
The method of operating of 15. electric tools as claimed in claim 14, is characterized in that: described casing is provided with described in controlThe operating parts of connector axially-movable, described electric tool also comprises in response to the motion of described operating parts and to working head and supportingThe automatic switching control equipment that the position of mechanism regulates, described connector shaft to move to described several receiving spaces inA separation, described working head supporting mechanism moves in several receiving spaces in addition under the effect of automatic switching control equipmentOne with axially corresponding position of described output shaft, described step 1) method and the step 2 of operation connector) middle operation element headThe method that supporting mechanism moves is operating operation part towards the direction axially-movable away from output shaft; Described step 3) middle operation is evenThe method of fitting is the direction axially-movable of operating operation part towards output shaft.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310045957.3A CN103963016B (en) | 2013-02-05 | 2013-02-05 | Electric tool and for the method for operating of this electric tool |
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| CN201310045957.3A CN103963016B (en) | 2013-02-05 | 2013-02-05 | Electric tool and for the method for operating of this electric tool |
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| CN103963016A CN103963016A (en) | 2014-08-06 |
| CN103963016B true CN103963016B (en) | 2016-05-18 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110560738B (en) * | 2018-06-06 | 2024-07-09 | 苏州宝时得电动工具有限公司 | Hand-held power tool |
| WO2023160348A1 (en) * | 2022-02-22 | 2023-08-31 | 南京泉峰科技有限公司 | Electric tool |
Citations (6)
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|---|---|---|---|---|
| WO1999056919A1 (en) * | 1998-04-30 | 1999-11-11 | Manfred Schneider | Machine tool with tool changeout |
| EP1952947A1 (en) * | 2007-02-02 | 2008-08-06 | ERGOBIONIK GmbH | Hand-held power driven tool for drilling and/or screwing |
| CN101511544A (en) * | 2006-09-04 | 2009-08-19 | 罗伯特·博世有限公司 | Hand held electric tool |
| CN102161197A (en) * | 2006-12-18 | 2011-08-24 | 罗伯特·博世有限公司 | Motor-driven machine tool |
| CN202702201U (en) * | 2011-08-06 | 2013-01-30 | 苏州宝时得电动工具有限公司 | Power tool |
| CN103213108A (en) * | 2012-01-21 | 2013-07-24 | 苏州宝时得电动工具有限公司 | Handheld tool |
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2013
- 2013-02-05 CN CN201310045957.3A patent/CN103963016B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999056919A1 (en) * | 1998-04-30 | 1999-11-11 | Manfred Schneider | Machine tool with tool changeout |
| CN101511544A (en) * | 2006-09-04 | 2009-08-19 | 罗伯特·博世有限公司 | Hand held electric tool |
| CN102161197A (en) * | 2006-12-18 | 2011-08-24 | 罗伯特·博世有限公司 | Motor-driven machine tool |
| EP1952947A1 (en) * | 2007-02-02 | 2008-08-06 | ERGOBIONIK GmbH | Hand-held power driven tool for drilling and/or screwing |
| CN202702201U (en) * | 2011-08-06 | 2013-01-30 | 苏州宝时得电动工具有限公司 | Power tool |
| CN103213108A (en) * | 2012-01-21 | 2013-07-24 | 苏州宝时得电动工具有限公司 | Handheld tool |
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| CN103963016A (en) | 2014-08-06 |
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Effective date of registration: 20170428 Address after: 215123 Jiangsu Province, Suzhou City Industrial Park East Road, No. 18 Patentee after: Technology (China) Co., Ltd. Address before: 215123 Jiangsu Province, Suzhou City Industrial Park East Road, No. 18 Patentee before: Baoshide Electric Tools Co., Ltd., Suzhou |
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Granted publication date: 20160518 Termination date: 20200205 |