CN105500261B - Power tool and its operating method - Google Patents

Abstract

The invention discloses a kind of power tool and its operating method.The power tool includes：Main body, with the output shaft for driving work head rotation；Motor, driving output shaft rotation；Handle, is connected with subject activity；Support support；Power tool also includes being arranged on main body, handle and supports the link gear between support, and the link gear makes the main body support support while relatively described handle is axially opposite or counter motion along output shaft with described.The power tool of the present invention is due to main body and supports support opposite handle as counter motion so that supporting support stretches out the in small distance of handle, so as to enhance the stability for supporting support.

Description

Power tool and its operating method

Technical field

The present invention relates to a kind of power tool, more particularly to a kind of brill class power tool.

The invention further relates to a kind of operating method of power tool.

Background technology

In existing brill class hand-hold power tool, electric drill, impact drill and electric screw driver are generally included.Electric drill is to use In being drilled on workpiece, in operation process, auger spindle constantly rotates.

In order to preferably process hole on workpiece, by need on power tool it is extra install support support help to Hold workpiece.But, the type of annex is relatively more on the market, it is impossible to general on all power tools.In addition, the dismounting of annex It is all comparatively laborious with installing, to user using causing great inconvenience.Most of all, when needing to bore deeper hole, Drill the incipient stage, annex rocks more serious, it is impossible to carry out boring work well.

Therefore, a kind of convenience and firm power tool are needed badly.

The content of the invention

In view of the shortcomings of the prior art, it is an object of the invention to provide a kind of convenience and firm power tool.

The technical solution adopted for the present invention to solve the technical problems is：A kind of power tool, including：Main body, including with In the output shaft of driving work head rotation；Motor, driving output shaft rotation；Handle, is connected with subject activity；Support support；Institute Stating power tool also includes being arranged on main body, handle and supports the link gear between support, and the link gear makes described Main body supports support while relatively described handle is axially opposite or counter motion along output shaft with described.

Preferably, the link gear includes setting the first service portion on the body, is arranged on and described supports branch The second service portion on frame and the reverse unit being arranged on the handle；The reverse unit can make described first to make With portion and second service portion, relatively described handle is axially opposite or counter motion along output shaft simultaneously.

Preferably, first service portion is axially extending along output shaft, and second service portion is axially extending along output shaft； First service portion output shaft axial direction relative with second service portion is located at the both sides of the reverse unit respectively.

Preferably, first service portion is the first tooth bar, and second service portion is the second tooth bar, the reverse unit Including the gear that can be rotated around fixed axis；The gear is engaged simultaneously with first tooth bar and second tooth bar；It is described First tooth bar is located at the both sides of the fixed axis with second tooth bar.

Preferably, first service portion is the first tooth bar, and second service portion is the second tooth bar, the reverse unit Including the first gear and second gear being coaxially disposed around rotation axis；The first gear is engaged with first tooth bar, institute Second gear is stated to engage with second tooth bar；First tooth bar is located at the both sides of rotation axis with second tooth bar

Preferably, first service portion is the first axially extending tank body；Second service portion is axially extending Second tank body；The reverse unit includes pressure transmission medium, the storage tank for storing the pressure transmission medium, Yi Jigu It is scheduled on handle and towards opposite First piston bar and second piston bar；The First piston bar is sealed with the first tank body to be connected Connect and form the first cavity；The second piston bar and the second tank body are tightly connected and form the second cavity；The storage tank with First cavity and the connection of the second cavity.

Preferably, first service portion for it is fixed on the body and along the axially extending first piston of output shaft Bar, second service portion be fixed on it is described support on support and along the axially extending second piston bar of output shaft, it is described Reverse unit includes being fixed on the rigid U-tube on handle and the pressure transmission medium in the U-tube；The U Shape pipe has along output shaft axially extending the first pipe arm and the second pipe arm；The First piston bar is sealedly connected on described first In pipe arm, the second piston bar is sealedly connected in the second pipe arm；The pressure transmission medium is sealed in first piston Between bar and second piston bar.

Preferably, first service portion includes the first fixed part set along output shaft axially spaced-apart and the second fixation Portion, second service portion includes the 3rd fixed part and the 4th fixed part set along output shaft axially spaced-apart, the reverse list Member is directive wheel；Described first, the 3rd fixed position is axially facing the side of output shaft in the directive wheel along output shaft, described Secondth, the 4th fixed position is in the opposite side of directive wheel；The link gear also includes the first flexible connecting member and the second flexibility Connector；One end of first flexible connecting member is fixed on the first fixed part, and bypasses the directive wheel other end and be fixed on the 3rd Fixed part；One end of second flexible connecting member is fixed on the second fixed part, and bypasses the directive wheel other end and be fixed on the 4th Fixed part.

Preferably, the directive wheel can rotate around its axial line.

Preferably, the power tool also includes operationally limiting main body or supports the axial movement of support opposite handle Locking system.

Preferably, the locking system includes the first latch fitting being arranged in main body, be arranged on handle second Latch fitting, the first latch fitting and the second latch fitting being capable of mutually locking and unblocks.

Preferably, the locking system includes the first latch fitting being arranged in main body, be arranged on support second Latch fitting, the first latch fitting and the second latch fitting being capable of mutually locking and unblocks.

Preferably, the locking system includes being arranged on the first latch fitting supported on support, is arranged on handle Second latch fitting, the first latch fitting and the second latch fitting being capable of mutually locking and unblocks.

Preferably, first latch fitting is neck, and second latch fitting is latch, and the neck may be selected with the latch Engage and separate in ground.

Preferably, the axial movement distance of the relatively described handle of the main body and the support relative handle of supporting Axial movement is apart from identical.

Preferably, the handle and one in main body are provided with the contact electrically connected, the handle with it is another in main body One is provided with along the axially extending conductance rail of output shaft；During main body opposite handle is moved axially, the contact is all the time Electrically connected with the conductance rail.

Preferably, the support that supports includes support arm and support division；Support arm has first end and the second end, described Support division is connected to the first end of the support arm, and the second end of the support arm is slidably attached in handle or main body.

Preferably, the support division has the supporting surface perpendicular to output shaft axial direction.

Compared with prior art, because the main body of the power tool of the present invention is made reversely to link with supporting support opposite handle Mobile, drilling depth depends on main body with supporting the distance that support is separated, and the distance is equal to the distance that main body opposite handle is retreated With support support opposite handle reach apart from sum, i.e., when needing the support of output shaft relatively long distance, stretched supporting support Go out the less distance of handle to can be achieved relatively.Due to support support stretch out handle it is in small distance, therefore support support can be steady Admittedly support to be not likely to produce in the surface of workpiece, the course of work and rock, strengthen Consumer's Experience.

Present invention also offers a kind of operating method of power tool, the power tool includes the master with output shaft Body, handle and support support；The main body with it is described support support and meanwhile relatively described handle be axially opposite along output shaft or Counter motion；The output shaft has the output end of connection work head and second end relative with the output end；Described One axially refers to the axial direction from second end to the output end；The operating method comprises the following steps：

S1:Support is supported along the first axial movement or moves axially main body along with first axial opposed second；Until supporting Hold the distance between support and main body and reach pre-determined distance；

S2：On installment work head to output shaft；

S3：Support will be supported to support on the surface of workpiece.

Present invention also offers the operating method of second of power tool, the power tool includes the master with output shaft Body, handle and support support；The main body with it is described support support and meanwhile relatively described handle be axially opposite along output shaft or Counter motion；The output shaft has the output end of connection work head and second end relative with the output end；Described One axially refers to the axial direction from second end to the output end；Methods described in turn includes the following steps：

S1：Installment work head is to output shaft；

S2：Support is supported along the first axial movement or moves axially main body along with first axial opposed second；Until work Make head and be located axially in output shaft to support between support and main body；

S3：Support will be supported to support on the surface of workpiece.

Present invention also offers the operating method of the third kind of power tool, the power tool is included with output shaft Main body, handle and support support；The main body supports support while relatively described handle is axially opposite along output shaft with described Or counter motion；The operating method in turn includes the following steps：

S1：Installment work head is to output shaft；

S2：Work head is supported on workpiece, along the direction driving handle towards workpiece；Support is supported described in support On the surface of workpiece.

Compared with prior art, the operating method of power tool of the invention, operation displacement is smaller, simpler, It is quick and easy.

Brief description of the drawings

Fig. 1 is the stereogram of the electric drill of the embodiment of the present invention one.

Fig. 2 is the perspective exploded view of the electric drill in Fig. 1.

Fig. 3 is the part isometric decomposing schematic representation of another angle of the electric drill in Fig. 1.

Fig. 4 is that along Section A-A schematic diagram, now support division is close to main body in Fig. 1.

Fig. 5 is the view that support division is separated with main body in Fig. 4.

Fig. 6 is that now the first latch fitting and the second latch fitting are in the lock state along section B-B partial schematic diagram in Fig. 1.

Fig. 7 is the view of the first latch fitting in Fig. 6 and the separation of the second latch fitting.

Fig. 8 a-d are the electric drill different working condition schematic diagrames of embodiment one.

Fig. 9 is the diagrammatic cross-section of the link gear of the electric drill of embodiment two.

Figure 10 is the link gear different conditions schematic diagram of the electric drill of embodiment three.

Figure 11 is the first view of the link gear of the electric drill of example IV.

Figure 12 is second of view of link gear of the electric drill of example IV.

Figure 13 is the schematic diagram of the link gear of the electric drill of embodiment five.

Wherein,

1. the motor of 11. casing of main body 12.

13. the resettlement section of 14. output shaft of transmission mechanism 111.

112. the coupling part of 2. handle of base portion 21.

22. grip portions 3. support the support division of support 31.

The supporting surface of 311. first 312. second cambered surface of cambered surface 313.

First 51. first tooth bar 32. support arm 4. works

52. the gear wheel of 53. gear of the second tooth bar 531.

The pinion stand of 532. little gear, 54. gear shaft 55.

71. the drive-connecting shaft of the first 72. second latch fitting of latch fitting 73.

The fixed parts of 81a. the first fixed part the second fixed parts of 81b. 82a. the 3rd

Fixed part 83a. the first flexible connecting member the second flexible connecting members of 83b. of 82b. the 4th

84. the first cylinder bodies of workpiece 91a. of directive wheel 9.

91b. the second cylinder body 92a. the first cavity the second cavitys of 92b.

93a. First piston bar 93b. second piston bar 94a. first passages

The pressure transmission medium of 95. transferring cylinder of 94b. second channels 96.

The piston rod 98.U shape pipes of the 3rd piston rod 97b. of 97a. the 4th

The pipe arm of 981. first pipe arm 982. second

Embodiment

In order that technical problem solved by the invention, technical scheme and beneficial effect are more clearly understood, below in conjunction with Embodiment and accompanying drawing, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only To explain the present invention, it is not intended to limit the present invention.

In the preferred embodiment of power tool of the present invention, power tool bores class power tool to bore class power tool It is divided into impact drill, electric drill, electric screw driver；Electric drill also has direct current and point exchanged, and the present invention preferably enters by taking D.C. electric drill as an example Row is illustrated.

Shown in reference picture 1-3, the electric drills of embodiments of the invention one includes main body 1, be flexibly connected with main body 1 handle 2, And support support 3 with respect to what the activity of main body 1 was set.

Wherein, main body 1 includes the output shaft 14 for being used to drive first 4 rotation of work；Accordingly, electric drill also includes driving output The motor 12 of axle rotation.

Further, main body 1, which also includes being connected between motor 12 and output shaft 14, is used to pass the rotary power of motor Pass the transmission mechanism 13 of output shaft.

Further, main body 1 also includes casing 11, and motor 12, transmission mechanism 13 and part output shaft 14 are contained in machine In shell 11.

Specifically, casing 11 includes resettlement section 111 and base portion 112.Resettlement section 111 is generally cylindrical, motor 12, biography Motivation structure 13 and the major part of output shaft 14 are contained in resettlement section 111, and output shaft 14 extends resettlement section along its axial component Outside 111.Base portion 112 is located at the lower section of resettlement section 111, for being connected with supporting support 3 and handle 2.For the ease of installing, machine Shell 11 is closed up by two half shells of left and right by screw (not shown) to be assembled.

For the ease of description, work head direction is axially facing before using output shaft along it below, after opposite direction is；With main body Under being towards handle orientations, opposite direction is upper.

In the present embodiment, motor 12 is specially electro-motor, and electro-motor has to be extended forward from electro-motor housing The electro-motor axle gone out.

Transmission mechanism 13 includes the planetary gear reducing mechanism and pinion gear mechanism driven by motor 12 from the front to the back, wherein Pinion gear mechanism is connected with output shaft 14 and drives output shaft 14 to rotate.

Electro-motor is fixed in casing 11, and a gear-box is fixed in casing 11 and positioned at the front portion of electro-motor, tooth Roller box is used to house planetary gear reducing mechanism.Pinion gear mechanism includes can by a gear shaft with planetary gear reducing mechanism 31 The first gear of transmitting torque connection, the 3rd gear being connected with output shaft 14 and with first gear and the 3rd gear simultaneously The second gear of engagement, is arranged such and may be such that the rotation axis of output shaft 14 is parallel relative to the rotation axis of electro-motor. Certainly, if needed can also be by the setting angled relative to the rotation axis of electro-motor of the rotation axis of output shaft 14.Its Middle gear axle can be wholely set with first gear, and the rotation of first gear is passed to the 3rd gear, Mei Gechi by second gear The two ends of wheel are supported by axle sleeve.The rear axle housing of support pinion gear mechanism is fixed on gear-box, before front shaft sleeve is fixed on On shell.

It is of course also possible to be arranged as required into two gears, one is connected with planetary gear reducing mechanism, another with Output shaft 14 is connected.In addition, transmission mechanism 13 is not limited to above-described form, transmission mechanism 13 can only include planet Gear reduction, either only includes pinion gear mechanism or other rotary motion transmission mechanisms, such as ratchet mechanism, turbine Mechanism etc..Wherein planetary gear reducing mechanism has three-level deceleration system, the extension of electro-motor axle and planet-gear speed reducer Structure is engaged, and planetary gear reducing mechanism communicates rotational motion to pinion gear mechanism, and pinion gear mechanism drives output shaft 14 to rotate. When so electro-motor is run, by planetary gear reducing mechanism, pinion gear mechanism, finally exported by output shaft.In addition, slowing down Mechanism obtains wanted output speed by three stage planetary reduction and two-stage parallel axis deceleration system are constituted, in other embodiment party In formula, depending on the rotating speed of required output, reducing gear can only include two-stage planetary reduction system, or other deceleration systems.

Output shaft 14 has the output end of connection work first 4, and positioned at the second end of the output shaft other end.Output end is The front end of output shaft, the second end is the rear end of output shaft.The front end of output shaft 14 has in axially arranged accepting hole, accepting hole For installment work first 4.Work first 4 can be various types of drill bits.

Specifically, handle 2 has the coupling part 21 being connected with main body 1 and the grip portions gripped for operator 22；Grip portions 22 are located at the lower section of coupling part 21.The coupling part 21 is horizontally disposed with, grip portions 22 and coupling part 21 K is set in obtuse angle.Currently preferred angle K, can be pleasant during such gripping handle operation between 100 degree to 130 degree.

Coupling part 21 is in semi-surrounding shape, is partly wrapped in the base portion 112 of the casing 11 of main body 1.

Button switch is provided with the top of grip portions 22, battery is fixed on the rear portion of grip portions, is used as preferred reality Mode is applied, the battery can be lithium ion battery.It should be noted that described lithium ion battery is de- based on lithium ion here Go out-the general name of the rechargeable battery of insertion reaction, according to the difference of positive electrode, it may make up many systems, such as " lithium manganese " electricity Pond, " lithium iron " battery etc..In the present embodiment, lithium ion battery is the lithium-ion electric that a section rated voltage is 3.6V (volt) Pond.Certainly, battery can also be the battery types well known to those skilled in the art such as NI-G, ni-mh.

Certainly, motor, transmission mechanism, the set location of battery do not limit to above-mentioned form, such as motor and transmission mechanism It can also be arranged in handle, but for example battery can also be arranged in main body.

The present invention is not particularly limited to supporting support, can be used needed for drilling or the operation of stubborn screw The annex of various functions.For example for fixing the support annex of workpiece, for detection of concealed in work piece object internal objects Detection annex, for help screw class workpiece help screw accessories, the collection for collecting the dust produced in process Dirt annex etc., the support that supports of the invention is not limited to above-mentioned annex, can also be other annexes.The present invention is to fix workpiece Support annex exemplified by illustrate, other annexes be referred to help annex, will not be repeated here！

Wherein, supporting support 3 includes support arm 32 and support division 31, and support arm has first end and the second end；It is described to support The portion of holding is connected to the first end of support arm 32, and the second end of support arm 32 is slidably attached on the coupling part 21 of handle 2.

Support division 31 is used to position target when electric drill works, i.e., support division 31 is connected on workpiece.In this implementation In example, support division 31 is roughly annular, and middle breach is available for work head to pass through.

The front side of support division 31 is provided with the supporting surface 313 perpendicular to output shaft axial direction.Supporting surface 313 is substantially put down in smooth Face, it is ensured that accurately fitted with workpiece during processing.

Further, cambered surface or inclined-plane, cambered surface or inclined-plane are additionally provided with the side of the remote main body of support division 31 Annular center relative to support division is symmetrical arranged, to ensure the workpiece for the placement cylindricality that can stablize.Certainly, cambered surface or inclined-plane Above-below direction is not limited in, other directions can also be arranged on.Cambered surface and inclined-plane are also not limited to the remote main body of support division Side, the side of the close main body of support division can also be arranged on.

Further, it is equipped with cambered surface or oblique in the side of remote main body and the side of close main body of support division 31 Face, specifically into the present embodiment, the front end of support division is provided with the first cambered surface 311, and rear end is provided with the second cambered surface 312.So two Side can support columnar workpiece, can be applicable more operating modes.

Support arm 32 is substantially plate-like, and Aspect Ratio is 5:1 to 15:Between 1, the middle part of support arm 32 can be set The groove of hollow out, to mitigate the weight for supporting support, saves material.

The both sides of the horizontal direction of support arm 32 have slide section, and the correspondence position of the coupling part 21 of handle 2 is provided with chute, The slide section of support arm 32 is embedded in chute, it is possible to slided in chute.

Certainly, the second end of support arm is slidably attached in main body.Specifically, it is connected to the base portion of casing.

Further, in order that electric drill can get out the hole of certain depth, depthkeeping can also be provided with the side of support arm Scale.Seeing that operator's closing switch stops drilling when reaching corresponding scale, you can realize the hole for getting out certain depth.

In the present embodiment, the upper surface middle part of support arm 32, in arcuation, so can preferably save space to lower recess.

In the present invention, main body 1 and support support 3 can opposite handle 2 along output shaft axially while moving and the direction of motion Conversely；I.e. main body 1 is with supporting the opposite handle 2 of support 3 while being moved axially along output shaft, the simply movement of their opposite handles 2 In the opposite direction.For example, when the opposite handle 2 of main body 1 make first axial direction it is mobile when, support the opposite handle 2 of support 3 and make and first axle To the movement of the second opposite axial direction.First is axially from the output end of output shaft to the axial direction at the second end；Second axially For from the second end of output shaft to the axial direction of output end, i.e., with first axle in the opposite direction.

Due to main body and to support support opposite handle simultaneously mobile, therefore namely when main body 1 is with supporting one in support 3 Opposite handle is static, then another inevitable also opposite handle is static.When 1 opposite handle of main body 2 is axially static, support is supported Opposite handle is static, that is to say, that main body 1, handle 2 and support the geo-stationary of support 3.

Further, electric drill includes link gear, and link gear can make main body 1 and support the opposite handle of support 3 simultaneously It is axially opposite along output shaft or counter motion.Link gear is arranged on main body, handle and supported between support, special instruction Be, between not between being located at of confined space position.

Specifically, the axial movement distance on main body opposite handle axial direction is with supporting the axle of support opposite handle in the axial direction Can be also linear with equal to displacement, such as the displacement on main body opposite handle axial direction is with supporting support phase To the displacement proportional of handle in the axial direction.

Specifically, link gear includes setting the first service portion on the body 1, is arranged on second supported on support 3 Service portion, and the reverse unit being arranged on handle 2.Reverse unit can make the first service portion and the second service portion opposite handle Make counter motion.

It is the first tooth bar 51 referring to Fig. 3-5, the first site of action, the second site of action is the second tooth bar 52, reverse unit For the gear 53 that can be rotated around fixed axis；First tooth bar 51 and the second tooth bar 52 are axially extending along output shaft, the gear 53 engage simultaneously with the first tooth bar 51 with the second tooth bar 52, and are located between the first tooth bar 51 and the second tooth bar 52, i.e. the first tooth The tooth bar 52 of bar 51 and second is located at the both sides of the rotary shaft of gear 53.

Specifically, the lower surface for supporting the support arm 32 of support 3 is provided with along the axially extending raised line of output shaft, the first tooth bar 51 Positioned at the side of raised line.The bottom of the right half-shell of casing 11 also is provided with along the axially extending raised line of output shaft, the second tooth bar 52 In the side of the raised line, the direction of the direction of the second tooth bar 52 and the first tooth bar 51 on the contrary, namely first, second tooth bar tooth phase To setting.

Specifically, the fixed gear shaft 54 on handle 2, gear 53 is arranged on gear shaft 54 to be connected on handle 2. Gear 53 can rotate around gear shaft 54, but can not opposite handle 2 moved axially along output shaft.Gear shaft 54 is located substantially at connecting portion Points 21 center, so can keep whole electric drill in the course of the work, center of gravity is generally within the tiger's jaw in operator's hand Top, makes center of gravity in whole work process more steady.

The side of gear 53 is engaged with the first tooth bar 51, and the opposite side of gear 53 is engaged with the second tooth bar 52.When gear 53 During rotation, because the first tooth bar 51 and the second tooth bar 52 are located at the both sides of gear 53, therefore the first tooth bar 51 and the phase of the second tooth bar 52 Make reversely linkage movement to gear 53.That is, when the first tooth bar 51 moves forward, then being moved after the second tooth bar 52, while the first tooth Bar 51 drives main body 1 to move forward, and the second tooth bar 52 drives supported and moved after support 3；Moved behind the first tooth bar 51, then before the second tooth bar 52 Move, moved after main body 1 while the first tooth bar 51 is driven, the drive of the second tooth bar 52 supports support 3 and moved forward.

In the link gear course of work of the present embodiment, the axial distance of main body opposite handle movement is with supporting support phase The axial distance moved to handle is equal.

In order that electric drill is when that need not support workpiece, such as when support interferences drilling is supported in small space, still Being capable of normal work.Electric drill further comprises locking system, and locking system by main body or can support support opposite handle lock It is fixed.

In the implementation of the first locking system, locking system limitation main body opposite handle movement, i.e. locking system Can be by main body and handle locking.When locking system is by main body and handle locking, main body is unable to opposite handle movement, in linkage In the presence of mechanism, support support can not opposite handle movement, then main body, support support, handle three's geo-stationary so that Three locks.

Referring to Fig. 6-7 and Fig. 2 is combined, locking system is included in the first latch fitting 71 in main body, is arranged on handle Second latch fitting 72, the first latch fitting 71 and the second latch fitting 72 being capable of mutually locking and unblocks.

Further, the first latch fitting 71 is fixed on position of the outer wall of casing 11 in the front end of stop part 61.Second latch fitting 72 It is articulated in by drive-connecting shaft 73 on handle.

Further, the relative position of the first latch fitting 71 and the second latch fitting 72 is set to, when supporting support 3 and main body 1 When being closely packed together, the first latch fitting 71 and the second latch fitting 72 are located at axially upper corresponding position, now the first latch fitting 71 and second Latch fitting 72 can be locked, and can also be separated.When the support division for supporting support 3 is separated with main body 1, the first latch fitting 71 and the second lock Part 72 staggers, i.e. the first latch fitting 71 and the second latch fitting 72 have a certain distance in the axial direction, so that the first latch fitting 71 and second Latch fitting 72 can not be locked.

Wherein, the first latch fitting is neck, and second latch fitting is latch, and neck and latch are selectable to be engaged and separate.

More specifically, the second latch fitting and cam member are wholely set, three second of cam member side are raised, and positioned at the Two the second pits between two projections；Accordingly, the first latch fitting 71 has two first projections, and positioned at the first projection two Side and between three the first pits.Two the second pits of the second latch fitting 72 house two of the first latch fitting 71 the respectively simultaneously One is raised, at the same time, and three second of the second latch fitting 72 are raised while being respectively embedded into the first pit of the first latch fitting 71.

When the first raised embedded second pit, during the second raised embedded first pit, the first latch fitting 71 and the second latch fitting 72 Mutually locking, as shown in Figure 6；When first the second pit of raised abjection, during second the first pit of raised abjection, the He of the first latch fitting 71 The second mutually unblock of latch fitting 72, as shown in Figure 7.

Certainly, the first latch fitting and cam member can also be independently arranged.

Certainly, the first latch fitting, the concrete structure of the second latch fitting do not limit to said structure or other can realized Mutually locking and the structure of unblock.

In the implementation of second of locking system, locking system limitation supports the movement of support opposite handle, that is, locks System can will support support and handle locking.When locking system will support support and handle locking, main body can not be with respect to hand Handle is moved, in the presence of link gear, main body can not opposite handle movement, then main body, to support support, handle three relative It is static, so that three locks.

The specific locking form for supporting support and handle may be referred to the first implementation or other locking knots Structure.

In the implementation of the third locking system, locking system limitation supports support and moved relative to main body, that is, locks System can will support support and body lock.When locking system will support support and body lock, in the work of link gear Under, support support and body lock be unable to opposite handle movement, then main body, support support, handle three's geo-stationary, from And three locks.

The first implementation or other lockings can also be referred to by supporting the specific locking form of support and main body Structure.

In the implementation of the 4th kind of locking system, locking system limitation link gear work is locked by link gear. In the state of link gear is locked, the first service portion, the second service portion can not produce relative displacement with reverse unit, so as to limit System supports the counter motion of support and main body, makes to support support and body lock, then main body, to support support, handle three relative It is static, so that three locks.

Specifically, it is link gear is locked for limiting gear rotation.

In the implementation of the 5th kind of locking system, not against link gear, directly by main body, support, handle are supported Three's mutually locking.

Specifically, by a pin also cross main body, support support, handle three so that three be locked.

According to the difference of actual conditions, it can freely select a kind of in above-mentioned five kinds of locking system implementations.This implementation The first locking system implementation is used in example.

Because battery is arranged in handle gripping portion in the present embodiment, and motor is arranged in the casing of main body, therefore this The electric drill of embodiment further comprises electrical connection mechanism.

The electrical connection mechanism includes setting two parallel conductance rails in body shell, and the bearing of trend of conductance rail is parallel In the axial direction of output shaft；Conductance rail is electrically connected in body interior with motor.

Accordingly, provided with two contacts on the inwall of the base portion of handle；Two contacts respectively with two conductance rails one One correspondence contact；Contact is electrically connected in handle inner with the both positive and negative polarity of battery.

When main body opposite handle is moved, conductance rail remains the electrical contact with contact, so as to ensure in the whole of electric drill In the individual course of work, motor keeps status of electrically connecting with battery.

Certainly, conductance rail and contact change place are set, i.e., conductance rail is arranged on handle, accordingly, contact set In main body.

Conductance rail and the electric connection mode of contact, can be such that electrical connection more consolidates, and do not influence the overall structure of electric drill And outward appearance.

Certainly, as long as the electrical connection of motor and battery, electrical connection mechanism can be remained in the course of work of electric drill Concrete structure do not limit to said mechanism, for example can also be that electric wire is directly connected to motor and battery, offered on handle The groove of supply lines movement.

The relative axial movement distance for supporting support of main body, determines output shaft and supports the axial distance between support, certainly Surely the depth drilled.The axial movement distance of support opposite handle is supported, determines to support the length that support stretches out handle, Jin Erying The stability for supporting support is rung, i.e., whether produces and rocks.

For the ease of statement, by the relative axial movement distance for supporting support of main body, D1 ', D1 are denoted as；Support phase will be supported To the axial movement distance of handle, D2 ', D2 are denoted as；By the axial movement distance of main body opposite handle, D3 is denoted as.

Conventionally, as main body and handle are relatively motionless, relative axial movement distance for supporting support of main body etc. In the relative axial movement distance for supporting support of handle, i.e. D1 '=D2 '.And in the present invention, it is same due to supporting support and main body When opposite handle make opposite or counter motion, therefore the relative displacement for supporting support of main body is equal to and supports support opposite handle Displacement add main body opposite handle displacement；That is D1=D2+D3.It can be seen that, support is supported with respect to hand in the present invention The displacement of handle is less than the relative displacement for supporting support of main body, i.e. D2<D1.

Under same drilling depth, D1 '=D1 is also corresponded to, you can draw D2<D2 ', that is to say, that of the invention supports The axial movement distance for holding support opposite handle is less than the axial movement distance for supporting support opposite handle in the prior art.So Compared with the prior art, support support and stretch out in small distance outside handle, and then support support and rock smaller, more consolidate.

The invention also discloses a kind of operating method of power tool provided by the present invention.

A kind of operating method of power tool, the power tool includes the main body with output shaft, handle and supported Support；The main body supports support while relatively described handle is axially opposite or counter motion along output shaft with described；It is described defeated Shaft has the output end of connection work head and the second end positioned at the output end other end；Described first axially refers to from second Hold the axial direction of output end；Described second is axially axial opposed with first；

Methods described comprises the following steps：

S1:Support opposite handle will be supported to move axially along second along the first axial movement or by main body opposite handle；Directly Default ultimate range is reached to the distance between support and main body is supported；

S2：On installment work head to output shaft；

S3：Support will be supported to support on the surface of workpiece.

Wherein, the distance between support and main body are supported and reaches that default ultimate range refers to, support is supported and exists with main body Can not be further away from axially.

Below by taking the electric drill of the embodiment of the present invention one as an example, the operating method of the first and behaviour to the electric drill of the present invention Elaborated as method.

When workpiece need not be supported, the front end that support 3 abuts main body 1 is now supported, support arm 32 is almost housed completely In main body 1.First latch fitting and the second latch fitting mutually locking, electric drill be in whole machine lock-out state, that is, support support 3, main body 1 with And the three of handle 2 locking.Press electric drill switch, you can to carry out drilling operation.

Referring to 8a-c, when needing to support Workpiece boring, operate in accordance with the following steps：

The first step, whole machine unblock

Second latch fitting 72, which is pulled downwards, makes the second latch fitting 72 be separated with the first latch fitting 71, the limitation between main body 1 and handle 2 Release, main body 1 can opposite handle 2 move, electric drill be in whole machine released state.As shown in Figure 8 a.

Second step, supports support and supports workpiece

When electric drill is in whole machine released state, now support support 3 and main body 1 can opposite handle 2 move backward.And And now non-installment work head on output shaft；Support 3 will be supported to draw forward, make to support support 3 and move forward, while main body 1 is moved back by It is dynamic.Or, now main body 1 is pulled back, makes to move after main body 1, is moved forward while supporting support 3.Until making main body and supporting Support reaches pre-determined distance.

Installment work head, as shown in Figure 8 b,

On the surface that the supporting surface for supporting support 3 is resisted against to workpiece 9.

3rd step：Drilling

When abutment face is resisted against on the surface of workpiece 9, the trigger of electric drill, bit are pressed.Gripping handle 2 is forward Push away, the reaction force of workpiece 9 made to support and moved after the opposite handle 2 of support 3, while main body 1 moves forward, and drives drill bit to go deep into workpiece 9 Internal drilling.Now, as shown in Figure 8 c, required hole is got out on workpiece.

The invention also discloses the operating method of second of power tool provided by the present invention.

A kind of operating method of power tool, the power tool includes the main body with output shaft, handle and supported Hold support；The main body supports support while relatively described handle is axially opposite or counter motion along output shaft with described；It is described Output shaft has the output end of connection work head and the second end positioned at the output end other end；Described first axially refers to from the Axial direction of two ends to output end；Described second is axially axial opposed with first；

Methods described in turn includes the following steps：

S1：There is provided and install the power tool after work head additional；

S2：Support opposite handle will be supported to move axially along second along the first axial movement or by main body opposite handle；Directly It is located axially at and supports between support and main body in output shaft to work head；

S3：Support will be supported to support on the surface of workpiece.

Wherein, install the power tool after work head additional, can be the power of installment work head when supporting support against main body Instrument, can also be the power tool for supporting installment work head when support separates certain distance with main body.

Wherein, work head is located axially in output shaft and supported between support and main body, refer to work head be fully retracted to Hold in support, work head front end, which is located at, to be supported behind support front end.

Below by taking the electric drill of the embodiment of the present invention one as an example, second of the operating method to the electric drill of the present invention makees detailed Explanation.

The electric drill after drill bit is installed in offer additional and electric drill is in whole machine released state, will be supported support 3 and is drawn forward, makes to support branch Frame 3 moves forward, while main body 1 is moved rearwards by.Or, now main body 1 is pulled back, make after main body 1 move, while support support 3 to Preceding movement.As shown in Figure 8 b, until supporting outside the fully extended drill bit of support 3, i.e., drill bit is located at and supported between support 3 and main body 1, Now the supporting surface for supporting support 3 is resisted against on the surface of workpiece 9.

Mode of operation is substantially similar with the first, will not be repeated here！

The invention also discloses the mode of operation of the third power tool provided by the present invention.

A kind of operating method of power tool, methods described in turn includes the following steps：

S1：There is provided and install the power tool after work head additional；

S2：Work head is supported on workpiece, makes to support support opposite handle towards workpiece movement；Until described support branch Frame is supported on the surface of workpiece.

Below by taking the electric drill of the embodiment of the present invention one as an example, the third the operating method to the electric drill of the present invention is made briefly It is bright.From unlike the operating method of first two,

The electric drill after drill bit is installed in offer additional and electric drill is in whole machine released state, now supports work head on workpiece, As shown in figure 8d.Then handle 2 is elapsed forward.Now opposite handle, main body under acting in opposition of the workpiece to the head that works after move, The forward movement of the opposite handle of support 3 is supported simultaneously.Because handle moves forward towards workpiece, support is supported at faster speed close to work Part, until when supporting support and supporting on workpiece, as shown in Figure 8 b.

Operating method is similar with the first mode of operation, will not be repeated here！

The operating method of the power tool of the present invention, user can select the behaviour of oneself according to the custom or hobby of oneself Make method, more flexibly, improve Consumer's Experience sense.In addition, the present invention power tool operating method, moved during operation away from It is simpler, quick and easy from smaller.

Fig. 9 is shown for embodiments of the invention two.It is substantially identical with embodiment one in embodiment two.Embodiment Two are not both uniquely with embodiment one, and the link gear of embodiment one is a gear, and embodiment two is the tooth of two synchronizations Wheel.

Referring to Fig. 9, the first site of action is similarly the first tooth bar 51, and the second site of action is similarly the second tooth bar 52, instead Include little gear 531 and gear wheel 532 to unit；Little gear 531 and gear wheel 532 are coaxially and synchronous rotary is set；Little gear 531 are engaged with the first tooth bar 51, and gear wheel 532 is engaged with the second tooth bar 52；First tooth bar 51 and the second tooth bar 52 are along output Axle is axially extending, and positioned at little gear rotary shaft both sides, namely the rotary shaft of gear wheel both sides.

Specifically, Fig. 9 is the sectional view of the horizontal plane in little gear, as can be seen from Figure 9：Little gear and gear wheel Setting up and down, little gear is located on gear wheel, little gear and the first tooth bar in a horizontal plane, gear wheel is located at the first tooth The lower section of bar, therefore gear wheel and the first tooth bar and portion interfere.Because the radius of little gear is less than gear wheel, therefore little gear And second have certain distance between tooth bar, little gear and the second tooth bar do not produce interference yet.

Because the radius of big little gear is different, and size gear synchronous rotates；Therefore when big little gear turns over certain angle, The distance for the first tooth bar axial movement engaged with little gear is less than the distance for the second gear axial movement engaged with gear wheel. If the radius of little gear is R1, the radius of gear wheel is R2；The distance of first tooth bar axial movement, namely main body opposite handle are moved Dynamic axial distance be L1, the second tooth bar axial movement distance, namely support support opposite handle movement axial distance be L2, then its meet L1：L2=R1：R2.

The operation principle and the course of work of the link gear of embodiment two are similar with embodiment one, will not be repeated here！

The operating method and operating method and embodiment one of the electric drill of embodiment two are substantially similar, can refer to embodiment One method, need to only make the appropriate adjustments, will not be repeated here！

Shown in Figure 10 for embodiments of the invention three.In embodiment three, label and the identical part of embodiment one Structure and function are identical with embodiment one, and here is omitted.It is not both linkage that embodiment three is unique with embodiment one Mechanism concrete structure is different.

The link gear of embodiment three equally includes setting the first service portion in main body, is arranged on the supported on support Two service portions and it is arranged on handle and the first service portion can be made and the second service portion opposite handle makees heterodromous anti- To unit.

Referring to Figure 10, reverse unit is the directive wheel 84 being arranged on handle 2, and bypasses the flexible connection of directive wheel Part.Flexible connecting member includes the first flexible connecting member 83a and the second flexible connecting member 83b, the first flexible connecting member 83a from front end Directive wheel 84 is bypassed, is contacted with the later half wheel face of directive wheel 84；Second flexible connecting member 83b bypasses directive wheel 84 from afterwards, with leading To the first half wheel face contact of wheel 84.

First service portion is the first fixed cell for fixing flexible connector in the base portion 112 of main body 1, tool Body includes fixing the first flexible connecting member 83a the first fixed part 81a and fixes the second flexible connecting member 83b the second fixed part 81b。

Second service portion is single for the second fixation for fixing flexible connector on the support arm 32 for supporting support 3 Member, specifically includes and fixes the first flexible connecting member 83a the 3rd fixed part 82a and fix the 4th of the second flexible connecting member 83b Fixed part 82b.

First flexible connecting member 83a first end is fixed on the first fixed part 81a, and bypasses directive wheel 84, the second end It is fixed on the 3rd fixed part 82a.

Second flexible connecting member 83b first end is connected on the second fixed part 81b, and bypasses directive wheel 84, the second end It is fixed on the 4th fixed part 82b.

In order to avoid being influenced each other between first, second flexible connecting member 83a, 83b, the first flexible connecting member 83a and Two flexible connecting member 83b are contacted with directive wheel 84 in different directive wheel cross-sections.I.e. the first flexible connecting member 83a and second is soft Connector 83b is in the wheel face different height region of directive wheel 84 for property.

In order to reduce in running, the abrasion between directive wheel 84 and flexible connecting member, directive wheel of the invention can be around Its axis is rotated.Certain directive wheel can not also be rotated.

Wherein, the first flexible connecting member and the second flexible connecting member are rope, but are not limited to rope, for example, can also be chain Bar etc..The equal length of first, second flexible connecting member, naturally it is also possible to unequal.

The course of work to link gear in the embodiment of the present invention three is elaborated below in conjunction with Figure 10.

Original state is as shown in part on Figure 10, when will support the opposite handle 2 of support 3 and drawing forward, positioned at supporting on support 3 The 3rd fixed part 82a reach, while stretching the first flexible connecting member 83a the second end forward, the first flexible connecting member 83a exists In the presence of second end tensile force, the first flexible connecting member 83a stretches first in main body 1 by its first end and consolidated backward Determine portion 81a, moved after main body 1 while being driven.Final state is as shown in part under Figure 10.

In the link gear course of work, the axial distance of main body opposite handle movement is L1, supports support opposite handle Mobile axial distance is L2, it can be seen that L1 is equal with L2.

When the opposite handle 2 of support 3 will be supported to pusher, moved after the 4th fixed part 82b supported on support 3, together Shi Xianghou stretch the second flexible connecting member 83b the second end, the second flexible connecting member 83b in the presence of the second end tensile force, Second flexible connecting member 83b first end stretches forward the second fixed part 81b in main body 1, while driving before main body 1 Move.So as to realize that supporting support 3 and the opposite handle 2 of main body 1 makees counter motion.

The operating method and operating method and embodiment one of the electric drill of embodiment three are substantially similar, can refer to embodiment One method, need to only make the appropriate adjustments, will not be repeated here！

Shown in Figure 11 to Figure 12 for embodiments of the invention four.In example IV, label and the identical of embodiment one The structure and function of part are identical with embodiment one, and here is omitted.Example IV is unique different from embodiment one It is that link gear concrete structure is different.

The link gear of example IV equally includes setting the first service portion in main body 1, is arranged on and supports on support 3 Second service portion and it is arranged on handle and the first service portion can be made and the second service portion opposite handle makees heterodromous Reverse unit.

It is to be fixed on the first tank body 91a axially extending in main body referring to Figure 11-12, the first service portions；Second service portion The second tank body 91b axially extending on support is supported to be fixed on；Reverse unit includes First piston bar 93a and second piston bar 93b, pressure transmission medium and the storage tank (not shown) for storing the pressure transmission medium.First piston bar 93a and second piston bar 93b are fixed on handle, and towards opposite.

First piston bar 93a is embedded in the first tank body 91a, and is tightly connected with the first tank body 91a and is formed the first cavity 92a；Second piston bar 93b is embedded in the second tank body 91b, is tightly connected with the second tank body 91b and is formed the second cavity 92b；Institute Storage tank is stated to connect with the first cavity 92a and the second cavity 92b.

Further, reverse unit also includes the transfer tank 95 being connected with fluid reservoir by valve.

The first passage 94a of connection transfer tank 95 and the first cavity 92a is set on transfer tank 95 and set in connection Turn the cavity 92b of tank 95 and second second channel 94b.

Specifically, storage tank, transfer tank 95, first, second piston rod 93a, 93b and first, second passage 94a, 94b is each attached on handle 2.

Further, first, second piston rod 93a, 93b has hollow structure respectively.First, second passage 94a, 94b connects first, second cavity 92a, 92b by first, second piston rod 93a, 93b hollow structure respectively.

Pressure transmission medium 96 can be entered from transfer tank 95 by first passage 94a and First piston bar 93a hollow structure Enter the first cavity 92a to apply pressure to main body 1.

Pressure transmission medium 96 can be entered from transfer tank 95 by second channel 94b and second piston bar 93b hollow structure Enter the second cavity 92b to apply pressure to supporting support 3.

If the cross-sectional area of the first cavity is S1, the cross-sectional area of the second cavity is S2；First cylinder body opposite handle axial direction Mobile distance, namely main body opposite handle movement axial distance be L1, the second cylinder body opposite handle axial movement distance, Namely support support opposite handle movement axial distance be L2, then its meet L1：L2=S2：S1.

The section of first, second cavity is arranged to different size of, so as to adjust main body opposite handle and support support Opposite handle moving speed.

In the present embodiment, the section of first, second cavity is identical, so that the displacement on main body opposite handle axial direction Can be with equal with supporting the displacement of support opposite handle in the axial direction.

Specifically, pressure transmission medium is hydraulic medium.Certainly, tool is not confined to hydraulic medium, for example, can also be Air pressure medium.

The course of work to link gear in the embodiment of the present invention four is elaborated below in conjunction with Figure 11-12.

Flowed to when filling the pressure transmission medium 96 in pressure transmission medium 96, transfer tank 95 from fluid reservoir to transfer tank 95 First cavity 92a and the second cavity 92b, because first, second piston rod 93a, 93b is fixed on handle, in first, second chamber First tank body 91a, the second tank body 91b are respectively further from first, second piston in the presence of pressure transmission medium 96 in body 92a, 92b Bar 93a, 93b are moved, so that main body 1 is moved with the opposite handle of support 3 is supported.Due to first, second piston rod 93a, 93b Direction on the contrary, therefore main body 1 and supporting the opposite handle of support 3 and making reverse linkage.

Pressure in extraction pressure transmission medium 96, the first cavity 92a and the second cavity 92b from from fluid reservoir to transfer tank 95 Power Transfer Medium 96 flows to transfer tank 95, and negative pressure is produced in the first cavity 92a and the second cavity 92b, due to first, second work Stopper rod 93a, 93b are fixed on handle, and the first tank body 91a, the second tank body 91b are respectively facing first, second piston rod 93a, 93b It is mobile.

The operating method and operating method and embodiment one of the electric drill of example IV are substantially similar, can refer to embodiment One method, need to only make the appropriate adjustments, will not be repeated here！

Shown in Figure 13 for embodiments of the invention five.In embodiment five, label and example IV identical part Structure and function are identical with example IV, and here is omitted.Embodiment five is not both uniquely linkage with example IV Mechanism concrete structure is slightly different.

The link gear of embodiment five equally includes setting the first service portion in main body 1, is arranged on and supports on support 3 Second service portion and it is arranged on handle and the first service portion can be made and the second service portion opposite handle makees heterodromous Reverse unit.

Referring to Figure 13, the first service portion is the 3rd axially extending piston rod 97a, and the 3rd piston rod 97a front end is fixed On the body 1；Second service portion is the 4th axially extending piston rod 97b, and the 4th piston rod 97b front end, which is fixed on, supports branch On frame 3；Reverse unit includes the U-tube 98 being fixed on handle, and the pressure transmission medium 96 in U-tube.I.e. in U Seal pressure Transfer Medium 96 between 3rd piston rod 97a, the 4th piston rod 97b in shape pipe.

U-tube has axially extending the first pipe arm 981 and the second pipe arm 982；3rd piston rod 97a rear end is located at the In one pipe arm 981 and seal against connection, it is interior and seal against connection that the 4th piston rod 97b rear end is located at the second pipe arm 982； Pressure transmission medium 96 is sealed between First piston bar 93a and second piston bar 93b.

Wherein, U-tube is rigid pipe, and pressure transmission medium can not be compressed.It is change effect that pressure transmission medium, which is played, The effect of force direction.

The active force that pressure transmission medium can produce a piston rod to pressure transmission medium, is situated between by pressure transmission Transmission inside matter, passes to another piston rod positioned at the pressure transmission medium other end.Due to the shape of U-tube, pressure Transfer Medium is converted into the active force of opposite direction and is applied on another piston rod.Realization body and support can be supported make reverse connection It is dynamic.

The course of work of link gear in the embodiment of the present invention five is elaborated below with reference to Figure 13.

When pulling back main body 1, main body 1 driven and moved after the 3rd piston rod 97a, the transmission of the 3rd piston rod 97a squeeze pressures Medium 96, pressure transmission medium 96 flows backward in the first pipe arm 981, because pressure transmission medium 96 is incompressible, passes through U The turning area of shape pipe 98, the flow forward in the second pipe arm 982, and by pressure transmission to the 4th piston rod 97b, the 4th piston rod 97b drives support support 3 and moved forward.

Be pulled along main body, promote backward support support, the course of work that is pulled along supporting support it is similar to the above, It will not be repeated here！

The operating method and operating method and embodiment one of the electric drill of embodiment five are substantially similar, can refer to embodiment One method, need to only make the appropriate adjustments, will not be repeated here！

The above-mentioned definition to each element is not limited in the various concrete structures mentioned in embodiment or shape, this area Those of ordinary skill it can be carried out simply know replace.Such as motor can substitute electricity with gasoline engine or diesel engine Dynamic motor.In addition, link gear mainly makes to support support and main body makees counter motion, to its structure and have no special requirements, visually The interior of different casings accordingly changes configuration, can increase new element.

Claims (19)

1. a kind of power tool, it is characterised in that it includes：

Main body, including for driving the output shaft of work head rotation；

Motor, driving output shaft rotation；

Handle, is connected with subject activity；

Support support；

The power tool also includes being arranged on main body, handle and supports the link gear between support, the link gear The main body is set to support support while relatively described handle is axially opposite or counter motion along output shaft with described.

2. power tool according to claim 1, it is characterised in that：The link gear includes setting on the body The first service portion, be arranged on and described support the second service portion on support and the reverse unit being arranged on the handle； The reverse unit can make first service portion with second service portion while relatively described handle is axial along output shaft Opposite or counter motion.

3. power tool according to claim 2, it is characterised in that：First service portion is axially extending along output shaft, Second service portion is axially extending along output shaft；First service portion output shaft axial direction side relative with second service portion To the both sides for being located at the reverse unit respectively.

4. power tool according to claim 3, it is characterised in that：First service portion is the first tooth bar, described the Two service portions are the second tooth bar, and the reverse unit includes the gear that can be rotated around fixed axis；The gear and described first Tooth bar and second tooth bar are engaged simultaneously；First tooth bar is located at the both sides of the fixed axis with second tooth bar.

5. power tool according to claim 3, it is characterised in that：First service portion is the first tooth bar, described the Two service portions are the second tooth bar, and the reverse unit includes the first gear and second gear being coaxially disposed around rotation axis；Institute State first gear to engage with first tooth bar, the second gear is engaged with second tooth bar；First tooth bar and institute State the both sides that the second tooth bar is located at rotation axis.

6. power tool according to claim 2, it is characterised in that：First service portion is the first axially extending tank Body；Second service portion is the second axially extending tank body；The reverse unit includes pressure transmission medium, for storing State the storage tank of pressure transmission medium and be fixed on handle and towards opposite First piston bar and second piston bar； The First piston bar is tightly connected with the first tank body and forms the first cavity；Second piston bar and the second tank body sealing connects Connect and form the second cavity；The storage tank is connected with the first cavity and the second cavity.

7. power tool according to claim 2, it is characterised in that：First service portion is to fix on the body And along the axially extending First piston bar of output shaft, second service portion is is fixed on described support on support and along output The axially extending second piston bar of axle, the reverse unit includes the rigid U-tube being fixed on handle and positioned at institute State the pressure transmission medium in U-tube；The U-tube has along output shaft axially extending the first pipe arm and the second pipe arm；Institute State First piston bar to be sealedly connected in the first pipe arm, the second piston bar is sealedly connected in the second pipe arm； The pressure transmission medium is sealed between First piston bar and second piston bar.

8. power tool according to claim 2, it is characterised in that：First service portion is included along between output shaft axial direction Every the first fixed part and the second fixed part of setting, second service portion includes consolidating along the 3rd of the setting of output shaft axially spaced-apart the Determine portion and the 4th fixed part, the reverse unit is directive wheel；Described first, the 3rd fixed position is exported in directive wheel edge Axle is axially facing the side of output shaft, and described second, the 4th fixed position is in the opposite side of directive wheel；The link gear is also wrapped Include the first flexible connecting member and the second flexible connecting member；One end of first flexible connecting member is fixed on the first fixed part, and Bypass the directive wheel other end and be fixed on the 3rd fixed part；One end of second flexible connecting member is fixed on the second fixed part, and Bypass the directive wheel other end and be fixed on the 4th fixed part.

9. power tool according to claim 8, it is characterised in that：The directive wheel can rotate around its axial line.

10. power tool according to claim 1, it is characterised in that：The power tool also includes operationally limiting Main body or the locking system for supporting the axial movement of support opposite handle.

11. power tool according to claim 10, it is characterised in that：The locking system includes being arranged on main body On the first latch fitting, the second latch fitting for being arranged on handle, the first latch fitting and the second latch fitting being capable of mutually locking and unblocks.

12. power tool according to claim 11, it is characterised in that：First latch fitting is neck, second lock Part is latch, and the neck is selectively engaged and separated with the latch.

13. power tool according to claim 1, it is characterised in that the axial movement of the relatively described handle of the main body Distance is with the axial movement for supporting the relative handle of support apart from identical.

14. power tool according to claim 1, it is characterised in that：The handle is with one in main body provided with electricity Another in the contact of connection, the handle and main body is provided with along the axially extending conductance rail of output shaft；In main body with respect to hand During handle is moved axially, the contact is electrically connected with the conductance rail all the time.

15. power tool according to claim 1, it is characterised in that：It is described to support support including support arm and support Portion；Support arm has first end and the second end, and the support division is connected to the first end of the support arm, the of the support arm Two ends are slidably attached in handle or main body.

16. power tool according to claim 15, it is characterised in that：The support division has perpendicular to output shaft axial direction Supporting surface.

17. a kind of operating method of power tool, it is characterised in that：

The power tool includes the main body with output shaft, handle and supports support；The main body supports support with described Relatively described handle is axially opposite or counter motion along output shaft simultaneously；

The output shaft has the output end of connection work head and second end relative with the output end；First axially refers to From second end to the axial direction of the output end；

The operating method comprises the following steps：

S1:Support is supported along the first axial movement or moves axially main body along with first axial opposed second；Until supporting branch The distance between frame and main body reach pre-determined distance；

S2：On installment work head to output shaft；

S3：Support will be supported to support on the surface of workpiece.

18. a kind of operating method of power tool, it is characterised in that：

The power tool includes the main body with output shaft, handle and supports support；The main body supports support with described Relatively described handle is axially opposite or counter motion along output shaft simultaneously；

The output shaft has the output end of connection work head and second end relative with the output end；First axially refers to From second end to the axial direction of the output end；

The operating method in turn includes the following steps：

S1：Installment work head is to output shaft；

S2：Support is supported along the first axial movement or moves axially main body along with first axial opposed second；Until work head It is located axially at and is supported between support and main body in output shaft；

S3：Support will be supported to support on the surface of workpiece.

19. a kind of operating method of power tool, it is characterised in that：

The power tool includes the main body with output shaft, handle and supports support；The main body supports support with described Relatively described handle is axially opposite or counter motion along output shaft simultaneously；

The operating method in turn includes the following steps：

S1：Installment work head is to output shaft；

S2：Work head is supported on workpiece, along the direction driving handle towards workpiece；Support is supported described in support in work The surface of part.