CN107498512B

CN107498512B - Power tool

Info

Publication number: CN107498512B
Application number: CN201610421792.9A
Authority: CN
Inventors: 张士松; 庞晓丽; 徐静涛
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2016-06-14
Filing date: 2016-06-14
Publication date: 2019-07-30
Anticipated expiration: 2036-06-14
Also published as: CN107498512A

Abstract

The present invention relates to a kind of power tools, comprising: shell；Motor；Output shaft；Supporting mechanism is used to support at least two attachments；Connector is connected on casing and can make a receiving location in the operating position being coupled with output shaft or positioned at supporting mechanism at least two attachments；Connector is able to drive direction of the attachment in operating position along output shaft axially away from casing and separates with output shaft, and attachment is driven to be contained in supporting mechanism, the axis of its axis and output shaft is angled when attachment is in receiving location, another position corresponding with connector that supporting mechanism can be adjusted at least two attachments, connector are able to drive another and output shaft at least two attachments and are coupled.The axis of its axis and output shaft is angled when attachment is in receiving location, and when such diverter tool attachment, size of the power tool in the axial direction of output shaft is small, occupies little space.

Description

Power tool

Technical field

The present invention relates to a kind of hand-hold power tool more particularly to a kind of hand-held of fast changeable attachment are dynamic Power tool.

Background technique

Hand-hold power tool such as electric drill, for drilling to workpiece such as plank etc., the attachment utilized It is drill bit；Such as screwdriver, it can be used for tightening or unscrewing screw, the attachment utilized is screwdriver bit.Such hand-held The main shaft of power tool is usually mounted with a mounting working chuck, for clamping a kind of attachment required for work, such Attachment can have different size.When carrying out the replacement attachment other work of progress, need first to dismantle lower original Attachment, replace with different attachments.The process of this attachment replacement operation is very cumbersome.

Currently, occur some rifle drill kind tools with double work collet in the market, it as needed can be in two kinds of works Make to select or convert to use between collet, the operating parts manually controlled is usually arranged in such tool, for converting in mounting working chuck It is first unlocked before, that is to say, that will unlock between former mounting working chuck and output shaft, in this way, stand-by mounting working chuck Operating position can be just moved to.In addition, by way of manual operation or starter motor driving mode, will work for use Collet is rotated to operating position, and correspondingly, former mounting working chuck on operating position by removing.It will finally be converted by operating parts again To mounting working chuck and output shaft establish connection, such output shaft can drive the mounting working chuck to be rotated.

United States Patent (USP) US7367757B2 discloses a kind of electric tool of double work collet, including an installation screwdriver The collet of the collet of head and an installation drill bit, two collets are substantially in 90 degree of settings, and two collets are as a whole It can be rotated around same pivotal point to realize that mounting working chuck operating position is converted.Before conversion, output shaft and installation are bored The mounting working chuck of head disengages, and being then rotated by 90 ° two collets keeps the mounting working chuck of installation screwdriver bit corresponding with output shaft, Then the function of screwdriver can be realized by the collet being connected with output shaft；When needing replacing brill function, screwdriver bit will be installed Mounting working chuck separated with output shaft and reversely rotate 90 degree make install drill bit mounting working chuck it is corresponding with output shaft, will install brill The mounting working chuck of head is connected with output shaft and can realize the function of brill.The mounting working chuck of two one need to set in this way, and And two connection structure permissible accuracies between mounting working chuck and output shaft are high, manufacture is difficult, the overall structure of double-headed electric drill Also more complex, volume is big, at high cost.

Chinese invention patent CN101563192B discloses a kind of toolroom machine of cutter for rotatable driving, the tool Machine has motor and transmission device, and transmission device is equipped with cutter changing library.Cutter changing is provided on library for accommodating screwdriver bit Cutter room.One operation saddle can be moved axially forwards to pass through one of cutter room and drive to be located in the cutter room Screwdriver bit enters cutter clamp or axially rearward movement passes through the magnet that its front end is arranged in the screwdriver bit in cutter clamp time To cutter room.One executing agency is used to carry out operation saddle axial limiting, and executing agency resists operation including an axial direction and slides The support lever of part, when needing replacing screwdriver bit, pressure key can release support lever to operation saddle axial limiting, It can thus be allowed to exit cutter clamp with screwdriver bit with moving operation saddle, and screwdriver bit is driven to return to cutter room, operation is slided Part exits cutter room, and rotary cutter replacement library may be selected by another screwdriver bit.In this way operation screwdriver bit enter cutter clamp or Returning to cutter room needs directly push-and-pull operation saddle so that toolroom machine is just arranged longer accordingly to increase the body of toolroom machine Product, if the small and exquisite gripping of the tool of holding is convenient, will certainly making tool, structure is complicated, and operating also can be time-consuming and laborious. In addition, the tail portion of operation saddle and cutter clamp offsets, and cutter clamp rotates and operates saddle when toolroom machine work It can not rotate, the sliding friction between operation saddle and cutter clamp in this way is very big, both influences working efficiency, while tool Abrasion is very fast, reduces the service life of tool.

With the tool of multi-working-head disclosed in the prior art, structure is complicated, volume is big, and the position of work head turns It is still more troublesome to change operation, needs operator's both hands to operate, or need to operate different workpieces to complete to convert.

Summary of the invention

Based on this, the present invention provides a kind of conversion that can fast implement different attachments and hand-hold type power small in size Tool.

A kind of power tool, comprising: shell；Motor is contained in shell, is used for outputting rotary power；Output shaft, by horse Rotary motion up to output passes to attachment；Supporting mechanism is used to support at least two attachments；Connector, connection In on casing and one at least two attachments capable of being made to support in operating position be coupled with output shaft or be located at The receiving location of mechanism；The connector is able to drive the attachment in operating position along output shaft axially away from casing Direction is separated with output shaft, and the attachment is driven to be contained in supporting mechanism, and the attachment is in receiving location When its axis and output shaft axis it is angled, the supporting mechanism can be adjusted to another at least two attachments A position corresponding with connector, the connector be able to drive at least two attachments another match with output shaft It connects.

Above-mentioned power tool, the axis of its axis and output shaft is angled when attachment is in receiving location, cuts in this way When changing attachment, size of the power tool in the axial direction of output shaft is small, occupies little space.

The supporting mechanism moves between the first position and the second position in one of the embodiments, at first It setting, one at least two attachments connect with connector and is contained in supporting mechanism, in the second position, the support machine Structure drives one at least two attachments to separate with connector, and makes another and the company at least two attachments Fitting connection.

The power tool further includes operating mechanism in one of the embodiments, and the operating mechanism is set including activity The operating parts being placed on shell, the operating parts relative to shell move with drive the connector make the attachment with it is defeated Shaft separation.

After the attachment is separated with output shaft in one of the embodiments, the operating parts is transported relative to shell The dynamic driving connector surrounds the axis pivot perpendicular to output shaft axial direction to drive the attachment to be contained in support machine Structure.

The operating parts edge is parallel to output shaft axially direction and moves to drive the company in one of the embodiments, Fitting.

In one of the embodiments, the direction of motion of the operating parts and the connector drive the attachment and The direction of motion of output shaft separation is opposite.

The operating mechanism further includes the first rack gear driven by the operating parts, driving in one of the embodiments, Second rack gear of the connector movement and the fixed gear engaged simultaneously with the first rack gear and the second rack gear, the fixed gear Rotation axis is fixed relative to shell.

The operating mechanism further includes the first guiding being arranged between shell and connector in one of the embodiments, Unit, operating parts band follower link track defined by the first pilot unit move, and the connector generation is parallel to The linear motion and pivoting action of output shaft axial direction.

First pilot unit includes the first guiding groove being connected on shell in one of the embodiments, described First guide pin is set on connector, and first guide pin can be moved along the first guiding groove.

First guiding groove includes interconnected straight trough and arc groove in one of the embodiments,.

First pilot unit further includes being connected to shell or connector alternative one in one of the embodiments, On the second guiding groove, second guiding groove is parallel with the straight trough and equal length, the shell or connector two Second guide pin is set in another of person, and two guide pin can be moved along the second guiding groove.

Position-limit mechanism is set between the connector and shell in one of the embodiments, and the position-limit mechanism can be grasped Make ground limitation or allows connector that the attachment in operating position is driven to separate with output shaft.

The position-limit mechanism includes the locating part and elastic element being set on shell in one of the embodiments, The locating part can be moved between two positions to limit or connector is allowed to move, and the elastic element provides locating part The elastic force for the position that limitation connector moves is moved to from the position for allowing connector to move.

The power tool further includes the operating parts being movably set on shell, the behaviour in one of the embodiments, Workpiece moves the limitation for releasing position-limit mechanism to connector along output shaft axially direction is parallel to.

Holding mechanism is provided on the connector in one of the embodiments, the holding mechanism operationally limits System allows connector to separate with attachment.

The position setting solution lock section of the supporting mechanism, the company are closed on the shell in one of the embodiments, Fitting movement makes the holding mechanism and the solution lock section cooperate the limitation to release holding mechanism to attachment.

The holding mechanism includes the holder and elastic component being set on connector in one of the embodiments, The elastic component provides the elastic force that holder stops attachment to separate with connector.

The holding mechanism is arranged two groups in one of the embodiments, separates respectively along connector with attachment Both direction be oppositely arranged.

The connector edge is parallel to output shaft and moves drive axially away from the direction of shell in one of the embodiments, Attachment is separated with output shaft, and the connector surrounds the axis pivoting action drive attachment perpendicular to output shaft axial direction Positioned at supporting mechanism.

The power tool further includes the operating parts being movably set on shell and response in one of the embodiments, In the automatic switching control equipment that the position of supporting mechanism is adjusted in the movement of operating parts, the supporting mechanism is automatically switching to fill Another position corresponding with connector at least two attachments is moved under the action of setting.

The automatic switching control equipment includes the fortune being connected between operating parts and supporting mechanism in one of the embodiments, Manual converting mechanism, the movement conversion mechanism are used to be converted to the operating parts along the movement for being parallel to output shaft axial direction described The linear movement of supporting mechanism.

The movement conversion mechanism includes being connected between the operating parts and supporting mechanism in one of the embodiments, The second pilot unit and with the second pilot unit cooperation actuator, the operating parts along far from output shaft direction transport When moving and second pilot unit being driven to move, the actuator is moved under the guidance of the second pilot unit from initial position To terminal location and supporting mechanism edge is driven to move perpendicular to output shaft axially direction.

The operating parts towards the direction of output shaft along moving and drive described second to lead in one of the embodiments, When to unit motion, the supporting mechanism is fixed relative to shell, and the actuator moves to initial position from terminal location.

Second pilot unit has sliding slot, one end of the actuator and support machine in one of the embodiments, Structure is flexibly connected, and the other end of the actuator is along runner movement to which actuator can be rotated around an axis.

A pair of of baffle is provided in the sliding slot in one of the embodiments, the sliding slot is divided by the baffle One end of the first sliding groove and second sliding slot to communicate with each other, the actuator is equipped with sliding pin, and second pilot unit is back and forth transported When dynamic, shuttling movement in track that the sliding pin is formed between first sliding groove, a pair of of baffle, second sliding slot.

Be rotatably connected to guide part in the sliding slot in one of the embodiments, the sliding pin selectively with guiding The different sides of part cooperate so that actuator drives supporting mechanism linear movement in opposite direction.

The first sliding groove and second sliding slot are respectively provided with straight flange and are connected with straight flange oblique in one of the embodiments, Side, wherein the supporting mechanism is fixed with respect to shell when the sliding pin is moved with respect to the second pilot unit along bevel edge, the driving The relatively described supporting mechanism movement in one end of part.

The power tool further includes the operating parts being movably set on shell, is connected in one of the embodiments, Driving unit between operating parts and connector and the movement conversion mechanism being connected between operating parts and supporting mechanism, it is described It is moved when operating parts is moved relative to shell by the driving unit band follower link and passes through the movement conversion mechanism Drive supporting mechanism movement.

The operating parts is axially moved along the output shaft is parallel in one of the embodiments,.

The process of the operating parts movement includes at least two sections of strokes, first segment, the behaviour in one of the embodiments, Workpiece drives the connector to move together, and the movement conversion mechanism is fixed relative to shell；Second segment, the connector phase Shell is fixed, the operating parts drives the movement conversion mechanism to move together.

The process of the operating parts movement includes at least two sections of strokes, first segment, the behaviour in one of the embodiments, Workpiece works to the driving unit and does not work to the movement conversion mechanism；Second segment, the operating parts is to described Movement conversion mechanism works and does not work to the driving unit.

Locking mechanism is set on the driving unit in one of the embodiments, and the operating parts is selectively in axis Locking mechanism is driven up to act on or not act on the driving unit.

The locking mechanism includes the dynamic clamping head and quiet clamping head of hook and bias hook in one of the embodiments, described Dynamic clamping head and quiet clamping head provides the elastic force that hook resets, and it is single to act on driving that the operating parts moves through axial abutting hook Member, the operating parts movement can also drive hook that the elastic force is overcome to move, so as to institute when the operating parts moves Driving unit is stated not work.

The process of the operating parts movement includes at least three Duan Hangcheng, first segment, the behaviour in one of the embodiments, Workpiece drives the connector to move together, and the movement conversion mechanism is fixed relative to shell；Second segment, the operating parts band It moves the connector and the movement conversion mechanism moves together；Third section, the connector is fixed relative to shell, described Operating parts drives the movement conversion mechanism to move together.

In one of the embodiments, in the first segment, the operating parts drives the connector to move together, described Connector drives attachment to separate in the axial direction with output shaft；In the second segment, the operating parts drives the connector Turn to the position that attachment is contained in supporting mechanism, and the operating parts drive the movement conversion mechanism to move to will Drive the state of the supporting mechanism；In the third section, operating parts drives the movement conversion mechanism to move and drives described Supporting mechanism is for linear motion.

The shell includes the main body being axially arranged along output shaft and is connected in main body in one of the embodiments, Main handle and assist handle, the main handle and assist handle be arranged along output shaft axially spaced-apart, the supporting mechanism setting In in assist handle.

The supporting mechanism includes at least two for corresponding receiving at least two work in one of the embodiments, Has the accommodating space of attachment.

Elastic supporting member for supporting optical member, the resilient support are set between the supporting mechanism and shell in one of the embodiments, Part compresses supporting mechanism along the direction that attachment is separated with supporting mechanism.

The attachment has the footstalk portion being coupled with output shaft and connect work head in one of the embodiments, Clamping part, card slot is set between the footstalk portion and clamping part, is correspondingly arranged fixture block on the connector, the connector is logical Fixture block is crossed to connect with card slot engagement with attachment.

Detailed description of the invention

Fig. 1 is the main view of power tool of the present invention；

Fig. 2 is the perspective exploded view of power tool of the present invention, shows Hafu-type half-shell wherein omitting；

Fig. 3 is the perspective exploded view of movement conversion mechanism；

Fig. 4 is the top view of power tool of the present invention；

Fig. 5 is the cross-sectional view of main view direction of the present invention；

Fig. 6 is the schematic diagram of the direction of motion of the operating parts of power tool of the present invention；

Fig. 7 is the schematic diagram that operating parts is moved backward and travelled forward with follower link；

Fig. 8 is schematic cross-sectional view when operating parts is moved backward and travelled forward with follower link；

Fig. 9 is the stereoscopic schematic diagram that operating parts is moved backward and travelled forward with follower link；

Figure 10 is the schematic diagram that operating parts is moved backward and rotated with follower link；

Figure 11 is turned to the schematic diagram that the attachment that connector connects enters supporting mechanism by connector；

Figure 12 is the schematic cross-sectional view of Figure 11；

Figure 13 is turned to the stereoscopic schematic diagram that the attachment that connector connects enters supporting mechanism by connector；

Figure 14 is that operating parts moves backward but do not act on the schematic diagram of the first rack gear；

Figure 15 is that operating parts moves backward and movement conversion mechanism is driven to move, and supporting mechanism is made to be adjusted to another work The stereoscopic schematic diagram for the position that tool attachment can be docked with connector；

After the completion of Figure 16 to Figure 19 illustrates attachment switching, operating parts travels forward and turns to separately with follower link The process of the axial corresponding position of one attachment and output shaft；

Figure 20 be connector turn to another attachment and output shaft in the axial direction corresponding position when section view show It is intended to；

Figure 21 be connector turn to another attachment and output shaft in the axial direction corresponding position when perspective view.

Related elements reference numeral in figure is as follows:

1, shell 11, main housing part 12, handle portion

121, start trigger 122, commutation trigger 13, battery pack

14, auxiliary shell 15, solution lock section 16, elastic supporting member for supporting optical member

2, motor 3, output shaft 4, speed reduction gearing

5, reduction box casing 6, supporting mechanism 61, accommodating space

7, connector 71, the first guide pin 72, the second guide pin

73, holding mechanism 731, holder 732, elastic component

733, third guide pin 74, fixture block 81, operating parts

82, the first rack gear 83, the second rack gear 84, fixed gear

852, the first guiding groove 8521, straight trough 8522, arc groove

853, the second guiding groove 86, position-limit mechanism 861, locating part

862, elastic element 87, locking mechanism 871, engagement device

872, dynamic clamping head and quiet clamping head 91, the second pilot unit 911, sliding slot

9111, baffle 9112, first sliding groove 9113, second sliding slot

9114, straight flange 9115, bevel edge 9116, stopper posts

912, guide part 9121, head end 9122, tail end

92, actuator 921, sliding pin 100, attachment

110, footstalk portion 120, clamping part 130, card slot

Specific embodiment

In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing to the present invention Specific embodiment be described in detail.Many details are explained in the following description in order to fully understand this hair It is bright.But the invention can be embodied in many other ways as described herein, those skilled in the art can be not Similar improvement is done in the case where violating intension of the present invention, therefore the present invention is not limited by the specific embodiments disclosed below.

With reference to the accompanying drawing, illustrate the better embodiment of hand-hold power tool.

Referring to figs. 1 to shown in Fig. 5, hand-hold power tool embodiment of the present invention uses multifunctional power tool.It is multi-functional Power tool includes shell 1, dynamical system.Wherein, shell 1 is made of two Hafu-type half-shell connections.Dynamical system includes receiving The motor 2 being dissolved in shell 1.The motor 2 of the present embodiment uses electric motor, can also with other class motors, such as air motor, The substitution such as fuel oil motor.

Shell 1 includes the main housing part 11 of receiving motor 2 and is used to form the handle portion 12 of handle, wherein main casing Portion 11 along Fig. 1 left and right directions extend and with the angled connection of handle portion 12.The main casing of multifunctional power tool in the present embodiment Body portion 11 is substantially arranged in obtuse angle with handle portion 12, and optimized angle is between 95 ° to 120 °.Far from motor 2 in handle portion 12 One end is arranged promising motor 2 and provides the energy unit of energy.Energy unit in the present embodiment is using battery pack 13, battery Packet 13 is detachably connected with handle portion 12, and battery pack 13 includes multiple Rechargeable batteries for being contained in battery pack housing 132, Battery preferably uses lithium battery.Certainly, multifunctional power tool can also be powered by power supply line by external power supply.Handle portion 12 The upper starting trigger 121 and commutation trigger 122 being equipped with close to main housing part 11 for manually controlling motor 2.

Join Fig. 2 and Fig. 5, the output shaft 3 that setting is rotated by the driving of motor 2 in main housing part 11.In the present embodiment, output shaft 3 axis Xs 1 are overlapped with the axis of motor 2.In other selectable schemes, output axis X1 and motor axis can it is parallel or Angled setting.The speed reduction gearing 4 for deceleration is provided between output shaft 3 and motor 2, which receives It is dissolved in reduction box casing 5.Reduction box casing 5 can be a part of shell 1, can also be provided separately.Subtract in the present embodiment Fast transmission device 4 is gear mechanism, it is preferred to use planetary gear mechanism.

Multifunctional power tool further includes the supporting mechanism 6 being set in shell 1, the connector being flexibly connected with shell 1 7, wherein supporting mechanism 6 is used to support at least two attachments 100, and connector 7 can then make at least two attachments One in the operating position that be coupled with output shaft 3 or in the receiving location positioned at supporting mechanism 6.

Such as Fig. 1, in the present embodiment, shell 1 further includes being connected on main housing part 11 and along 3 axial direction of output shaft and handle portion 12 spaced auxiliary shells 14.Supporting mechanism 6 is set in auxiliary shell 14.Auxiliary shell 14 can also be used as multi-functional The assist handle of power tool uses.

Supporting mechanism 6 is used to support at least two attachments.Here attachment can be screwdriver bit, drill bit, For work heads such as the small abrasive nose of sand milling or screw taps, it is also possible to adapter, collet etc. can clamp the attachment of work head.Ginseng Fig. 2, supporting mechanism 6 have at least two accommodating spaces 61, and at least two attachments 100 of corresponding receiving are preferably provided with here Two accommodating spaces, corresponding attachment 100 are also setting two.Accommodating space 61 is the receiving position of attachment 100 It sets.When wherein attachment 100 is located at the receiving location of supporting mechanism 6, as shown in figure 12, the axis of axis Y1 and output shaft 3 Angled α setting, can reduce volume of the tool in the axial direction of output shaft 3, wherein the angle [alpha] can be sharp between line X1 Angle, right angle or obtuse angle, angular range be arranged between 30 degree to 130 degree, it is preferred to use angle c be 60 degree to 115 Degree.

Connector 7 is coupled taking to the attachment 100 for being located at the receiving location of supporting mechanism 6 with output shaft 3 Operating position, the axis Y1 of attachment 100 is overlapped with the axis X 1 of output shaft 3 at this time, such as joins Fig. 1, Fig. 5.Alternatively, connector 7 to take the attachment for being located at the operating position being coupled with output shaft 3 to receiving location positioned at supporting mechanism 6, such as schemes 11, Figure 12.

Supporting mechanism 6 can move between a first position and a second position, in first position, at least two One in attachment under the drive of connector 7 with after 3 axial separation of output shaft and be contained in supporting mechanism 6, but the tool Attachment 100 is still connect with connector 7, such as Figure 11 to Figure 13.In the second position, supporting mechanism 6 drives at least two attachments In one separated with connector 7, and make at least two attachments another connect with connector 7, such as Figure 14 and figure 15。

Join Fig. 2, multifunctional power tool further includes operating mechanism, to manipulate the movement of connector 7.Operating mechanism includes The operating parts 81 being movably set on shell 1.

In the present embodiment, operating parts 81 is the slip lid for being slidably connected to shell 1.As shown in fig. 6, operating parts 81 is along being parallel to 3 axially direction of output shaft is moved with drive connection part 7.Certainly, operating parts 81 can also be along angled with 3 axial direction X1 of output shaft Direction movement.Specifically, the direction of motion of operating parts 81 and connector 7 drive attachment 100 and 3 axial separation of output shaft It is contrary.Join Fig. 6, connector 7 drive attachment 100 move downward and with 3 axial separation of output shaft, the side to the left To being set as forward.Then, when operating parts 81 is slided along rearwardly direction, connector 7 drives attachment 100 to travel forward.

Join Fig. 2, operating mechanism further include the first rack gear 82 driven by operating parts 81, drive connection part movement 7 second Rack gear 83 and the fixed gear 84 engaged simultaneously with the first rack gear 82 and the second rack gear 83, wherein the rotation axis phase of fixed gear 84 It is fixed for shell 1.Operating parts 81 drives the first rack gear 82 to move when sliding, realized and connected by the second rack gear 83, fixed gear 84 The counter motion of fitting 7.A pair is arranged in second rack gear 83, is separately positioned on the two sides of reduction box casing 5.7 both ends of connector point It is not stuck in reduction box casing 5, the whole similar U-shaped construction of connector 7, wherein every one end of connector 7 is respectively equipped with first and leads Pin 71, one end of the first guide pin 71 be stuck in reduction box casing 5, and the other end of the first guide pin 71 is stuck in be arranged on the second rack gear 83 In U-lag；The other end of connector 7 is for blocking attachment 100, also similar to U-shaped construction.Similarly, the first rack gear 82 A pair is also respectively arranged with fixed gear.

Operating mechanism further includes the first pilot unit being arranged between shell 1 and connector 7.Operating parts 81 drives connection Part 7 is moved along the track that the first pilot unit limits, make connector 7 generate be parallel to the linear motion of 3 axial direction X1 of output shaft with It moves pivotally.Wherein, the linear motion of connector 7 is for making connector 7 that will be located at the work for the operating position being coupled with output shaft 3 Have attachment 100 and 3 axial separation of output shaft.After the pivoting action of connector 7 divides connector 7 will with output shaft 3 axially Attachment enters in the receiving location (i.e. accommodating space 61) of supporting mechanism 6.

Specifically, the first pilot unit includes the first guiding groove 852 being connected on shell 1, is arranged on connector 7 First guide pin 71, the first guide pin 71 can be moved along the first guiding groove 852.First guiding groove 852 includes interconnected straight trough 8521 and arc groove 8522.

First pilot unit further includes the second guiding groove 853 being connected in 7 alternative one of shell 1 or connector.The Two guiding grooves 853 are parallel with straight trough 8521 and equal length.Setting the in another of 7 the two of shell 1 or connector Two guide pins 72, the second guide pin 72 can be along 853 relative motions of the second guiding groove.In the present embodiment, the second guide pin 72 is connected to On shell 1, the second guiding groove 853 is arranged on connector 7.

When operating parts 81 rearward slides, operating parts 81 passes through rack gear above-mentioned, gear mechanism band follower link 7 forward It moves, when the first guide pin 71 on connector 7 moves in straight trough 8521, connector 7 can make attachment 100 and output shaft 3 Separate in the axial direction, the second guiding groove 853 then relative to the second guide pin 72 gradually forward.When the first guide pin 71 moves to arc groove When in 8522, since parallel and equal length, the second guide pin 72 will be connected to second and draw the second guiding groove 853 with straight trough 8521 The slot bottom of guide groove 853 makes connector 7 that can not continue the axial advancement along output shaft 3.At this point, continue slide part 81, behaviour Workpiece 81 drives the first guide pin 71 to move in arc groove 8522, and connector 7 it is whole will with the second guide pin 72 pivotally, or It is to be rotated using the axis of the second guide pin 72 as pivot axis with the track of arc groove 8522, and then drive attachment fortune that person, which says, It moves in the receiving location of supporting mechanism 6.

Since operating parts 81, connector 7 have the risk surprisingly slided, this will cause connector 7 by band moving axis easily The case where causing operational failure to movement, operating mechanism further includes that limited position mechanism is arranged between connector 7 and shell 1 thus 86.Position-limit mechanism 86 drives the attachment 100 in operating position to separate with output shaft 3 to limit connector 7, or can quilt Operation is to allow connector 7 that the attachment 100 in operating position is driven to separate with output shaft 3.

Position-limit mechanism 86 includes the locating part 861 and elastic element 862 being set on shell 1, elastic element 862 The elasticity that limitation limits the position that connector 7 moves is moved to from the position for allowing connector 7 to move to provide locating part 861 Power.

Specifically, locating part 861 is configured to rotate relative to shell 1 or for linear motion, and elastic element 862 is then Locating part 861 is abutted for elasticity, locating part 861 is enable axially to be connected to connector 7, is arbitrarily produced to limit connector 7 It is raw to be axially moved.And when being to need connector 7 to be axially moved for the purpose for replacing attachment, it is only necessary to slide part 81, the resistance for making operating parts 81 that locating part 861 be driven to overcome elastic element 862, i.e., after 861 compression elastic element 862 of locating part Move to the position for allowing connector 7 to move.

In the present embodiment, elastic element 862 selects pressure spring, and locating part 861 is that opposite shell 1 is for linear motion when resetting. Pressure spring can be replaced with other elastic elements, such as resilient rubbber cushion.In addition, elastic element 862, which can also be, gives locating part 861 The torsional spring of biasing force, locating part 861 are that opposite shell 1 rotates when resetting.Operating parts 81 is along being parallel to output shaft 3 Axially direction movement releases limitation of the position-limit mechanism 86 to connector 7.

Fig. 1 and Fig. 2 are please referred to, holding mechanism 73 is additionally provided on connector 7.Holding mechanism 73 is to limit connector 7 It is separated with attachment 100, and can be operable to that connector 7 is allowed to separate with attachment 100.

Holding mechanism 73 includes the holder 731 and elastic component 732 being set on connector 7, and wherein elastic component 732 is used To provide the elastic force for making holder 731 stop attachment 100 isolated with connector 7.Holder 731 and elastic component 732 It is mounted on connector 7 by third guide pin 733.

Join Fig. 2, holding mechanism 73 is arranged two groups, sets along connector 7 is opposite with the isolated both direction of attachment 100 It sets.In the present embodiment, attachment 100 is separated along the direction of the axis perpendicular to attachment 100 with the realization of connector 7.Work Tool 100 two sides of attachment are respectively provided with holding mechanism 73, prevent attachment 100 and connector 7 by accidental separation, it is therefore an objective to guarantee work Tool attachment 100 is just allowed to separate with connector 7 when reaching positioned at the receiving location of supporting mechanism 6.In the present embodiment, two Holder 731 is rotatably dispose in the two sides of connector 7, and elastic component 732 is the torsional spring that can give 731 biasing force of holder, Make the elastic force for driving holder 731 by rotation return to provide.Elastic component 732, which is also possible to provide, makees holder 731 directly The elastic element of line movement, such as pressure spring.

The clamping part 120 that attachment 100 has the footstalk portion 110 being coupled with output shaft 3 and connect work head, wherein Card slot 130 is provided between footstalk portion 110 and clamping part 120.Fixture block 74 is correspondingly arranged on connector 7, connector 7 passes through fixture block 74 connect with the engagement of card slot 130 with attachment 100.

Card slot 130 is annular groove.Fixture block 74 setting two at, with respectively in the axis of attachment 100 two sides and card Slot 130 is engaged.When the two being needed to separate, it is only necessary to give attachment on the direction of the axis perpendicular to attachment 100 100 thrusts release the limitation of 73 pairs of the two of holding mechanism, and the two can be made to separate.

In the present embodiment, connector 7 is to move to start building with band along the direction for being parallel to the axial and separate shell 1 of output shaft 3 Have attachment 100 and 3 axial separation of output shaft, then connector 7, which is surrounded, moves pivotally perpendicular to the axial axis of output shaft 3 with band Power driven tools attachment 100 is located at supporting mechanism 6.

The position that supporting mechanism 6 is closed on shell 1 is provided with solution lock section 15.Connector 7 drives attachment 100 to enter branch Before support mechanism 6, the holder 731 of holding mechanism 73 touches solution lock section 15, and overcomes the resistance exercise of elastic component 732 to no longer The position isolated with connector 7 of attachment 100 is limited, then attachment 100 is able to enter the receiving position of supporting mechanism 6 It sets.

Join Figure 11 to 13, when connector 7, which has just turned to attachment 100, is located at supporting mechanism 6, attachment 100 It supports in supporting mechanism 6, but attachment 100 is not separated with connector 7.At this point, the position of adjustment supporting mechanism 6, makes to support Mechanism 6 drives the attachment being coupled originally with connector 7 to separate with connector 7, and the tool for being supported in supporting mechanism 6 originally is attached Part follows supporting mechanism 6 to move and be coupled with connector 7, to complete the switching of attachment.

Supporting mechanism 6 is adjusted position, can manually realize.That is, supporting mechanism 6 can be and be slidably connected to Shell 1 moves supporting mechanism 6 with hand push and slides when connector 7, which turns to attachment 100, is located at supporting mechanism 6, can be complete At the switching of attachment.

Join Fig. 2, elastic supporting member for supporting optical member 16 is set between supporting mechanism 6 and shell 1.Elastic supporting member for supporting optical member 16 can be attached along tool The direction isolated with supporting mechanism 6 of part 100 compresses supporting mechanism 6, the tool for making supporting mechanism 6 and being housed in supporting mechanism 6 Attachment is in close contact, and guarantees the reliability of attachment receiving.

In the present embodiment, power tool further includes adjusting in response to the movement of operating parts 81 to the position of supporting mechanism 6 The automatic switching control equipment of section, i.e. supporting mechanism 6 are to move to drive at least two tools attached under the action of automatic switching control equipment Another position corresponding with connector 7 in part, does not need in addition to be pushed with hand.

Automatic switching control equipment includes the movement conversion mechanism being connected between operating parts 81 and supporting mechanism 6, movement conversion Mechanism is used to be converted to operating parts 81 along the movement for being parallel to 3 axial direction of output shaft the linear movement of supporting mechanism 6.

Join Fig. 3, movement conversion mechanism include the second pilot unit 91 for being connected between operating parts 81 and supporting mechanism 6 with And the actuator 92 with the cooperation of the second pilot unit 91.Actuator 92 can recycle fortune between its terminal location and initial position It is dynamic.

When operating parts 81 is along far from output shaft 3 and being parallel to the axially direction of output shaft 3 and move and drive second to lead When moving to unit 91, i.e., when operating parts 81 rearward slides, actuator 92 is under the guidance of the second pilot unit 91 from initial Position moves to terminal location and supporting mechanism 6 is driven to move along perpendicular to 3 axially direction of output shaft.When operating parts 81 along When being moved towards the direction of output shaft 3 and second pilot unit 91 being driven to move, i.e., when operating parts 84 slides forwards, drive Moving part 92 moves to initial position from terminal location, and supporting mechanism 6 is fixed relative to shell 1.

Join Figure 13, Figure 15, the second pilot unit 91 has sliding slot 911.One end of actuator 92 and 6 activity of supporting mechanism are even Connect, the other end of actuator 92 along sliding slot 911 move to actuator 92 can around be parallel to output shaft 3 it is axial or with The axial angled axis rotation of output shaft 3.

There are two baffles 9111 for setting in the sliding slot 911 of second pilot unit 91.Two baffles 9111, which divide sliding slot 911, is First sliding groove 9112 and second sliding slot 9113.Sliding slot 911 has two be axially arranged the straight flange 9114 and difference along output shaft 3 The bevel edge 9115 being connected with two straight flanges 9114.Baffle 9111 is parallel with bevel edge 9115.Join Fig. 3, Figure 15, actuator 92 and sliding slot One end of 911 cooperations is provided with sliding pin 921.The distance between two baffles 9111 are greater than or equal to the diameter of sliding pin 921, that is, permit Perhaps sliding pin 921 passes through from the track formed between baffle 9111.

Join Fig. 3 and Figure 15, the second pilot unit 91 has also been pivotally connected guide part 912.Guide part 912 is located at sliding slot 911 The interior position far from a pair of of bevel edge 9115.Guide part 912 is substantially Y-shaped, and there are two intervals for one end tool far from bevel edge 9115 The head end 9121 of setting has a tail end 9122 close to one end of bevel edge 9115.Position of the sliding slot 911 far from bevel edge 9115 is also Stopper posts 9116 are provided with, two head ends 9121 selectively contact the model turned round to restricted guidance part 912 with stopper posts 9116 It encloses, makes guide part 912 that can only carry out back rotation within a predetermined range.When head end 9121 and stopper posts 9116 contact, such as Figure 15 institute Show that tail end 9122 deviates the center line Z of the second pilot unit 91, sliding pin 921 wherein contacts on one side with tail end 9122, with the The movement of two pilot units 91, sliding pin 921 in guide part 912, wherein transport downwardly towards a wherein straight flange 9114 by leading for one side It is dynamic.

The other end of actuator 92 is for linear motion to drive supporting mechanism 6.Specifically, item is set on supporting mechanism 6 The other end of shape slot, actuator 92 drives supporting mechanism 6 to transport to different directions by abutting two opposite walls of strip groove It is dynamic.Strip groove can also be replaced with two spaced blocks.

Sliding pin 921 is as follows in the motion profile of sliding slot 911:

In sliding slot 911, two 9115 intersections of bevel edge are the initial position of sliding pin 921, as shown in Figure 9.When the second guiding Unit 91 by operating parts 81 drive rearward move when, sliding pin 921 between two baffles 9111 along output shaft 3 axially forward Movement, as shown in figure 13.Sliding pin 921 contacts with tail end 9122 and guide part 912 is pushed to rotate, and sliding pin 921 is from two baffles Along the border movement of guide part 912 to position as shown in figure 15 between 9111, the second pilot unit 91 makes actuator during this 92 other end rotation, it is for linear motion that the cornice that the other end of actuator 92 then passes through abutting strip groove moves supporting mechanism 6.

Join Figure 16 to 19, after the completion of switching, needs to be that new attachment 100 and output shaft 3 are coupled, then it is reversed to push behaviour Workpiece 81, operating parts 81 drive the second pilot unit 91 to travel forward, and sliding pin 921 is transported backward relative to the second pilot unit 91 It is dynamic, and moved along first sliding groove 9112 to initial position.Sliding pin 921 is first moved along straight flange 9114 in first sliding groove 9112, so Initial position is moved to along bevel edge 9115 afterwards.When sliding pin 921 is moved along bevel edge 9115, the other end of actuator 92 is from abutting bar shaped Return at the wall position of slot, to abut another wall of strip groove when diverter tool attachment next time, during this, due to driving Moving part 92 does not act on the wall of strip groove, but moves in strip groove, therefore not will drive the movement of supporting mechanism 6, supports machine Structure 6 is fixed with respect to shell 1.

Next time in handoff procedure, actuator 92 is still moved between two baffles 9111, since 912 last time of guide part cuts It has rotated during changing, when return then returns to initial position along second sliding slot 9113.

It repeats the above steps, when sliding pin 921 moves in sliding slot 911, guide part 912, which plays, changes 921 track of sliding pin Effect enables to recycle between track of the sliding pin 921 between 9112, two baffles 9111 of first sliding groove, second sliding slot 9113 Movement, so that the other end of actuator 92 forms the attachment switching action of circulation.

In the present embodiment, automatic switching control equipment is adjusted the position of supporting mechanism 6 in response to the movement of operating parts 81. Specifically operating parts 81 is the movement that supporting mechanism 6 is controlled by movement conversion mechanism.It has chatted above, operating parts 81 is also used to Axial movement of the connector 7 along output shaft 3 is controlled so that attachment is separated with output shaft 3.Therefore, automatic switching control equipment is arranged Effect be: keep operator singlehanded and being quickly converted for attachment can be completed in operation one element i.e. operating parts 81.

When needing replacing attachment, the motion process of operating parts 81 includes at least two sections of strokes: first segment, such as Fig. 7 To Fig. 9, operating parts 81 moves together with follower link 7, and movement conversion mechanism is fixed (position is constant) relative to shell 1, this section The purpose of stroke is to separate 7 ground attachment of connector in the axial direction with output shaft 3；Second segment, connector 7 is relative to shell 1 is fixed, and operating parts 81 drives movement conversion mechanism to move together, and Figure 13 to Figure 15, the purpose of this section of stroke is to make supporting mechanism 6 Movement, so that another attachment is connect with connector 7.

It is provided with driving unit between operating parts 81 and connector 7, in the present embodiment, which includes the first rack gear 82, the second rack gear 83 of drive connection part movement 7 and the fixed gear 84 engaged simultaneously with the first rack gear 82 and the second rack gear 83. First segment stroke is worked to driving unit when operating parts 81 moves and is moved with band follower link 7, but 81 pairs of operating parts movements turn Structure of changing planes does not work；Second segment stroke, operating parts 81 move when only to movement conversion mechanism work and not to driving unit It works.

Specifically, operating mechanism further includes locking mechanism 87.Locking mechanism 87 includes be rotatably connected on driving unit the Engagement device 871 on one rack gear 82, the dynamic clamping head and quiet clamping head 872 being arranged between the first rack gear 82 and engagement device 871.First segment row Journey, operating parts 81 axially abut engagement device 871 (as shown in Figure 8) when moving, and drive the first rack gear 82 by engagement device 871 Movement, and then drive the movement of the second rack gear 83.Second segment stroke, engagement device 871 are oppressed the elasticity for overcoming dynamic clamping head and quiet clamping head 872 Power is rotated to extreme position, 872 accumulation of energy of dynamic clamping head and quiet clamping head, and axis when operating parts 81 continues to move in output shaft 3 is up over card To determine part 871, joins shown in Figure 14, such engagement device 871 does not follow operating parts 81 to move, and the first rack gear 82 will not be driven to move, But movement conversion mechanism movement is driven, and then supporting mechanism 6 is driven to move.Hereby it is achieved that operating parts 81 acts as driving unit It is moved to band follower link 7, and realizes and do not work when operating parts 81 moves to driving unit.

After operating parts 81 completes the movement of its second segment, supporting mechanism 6 is also completed to the attachment on connector 7 Switching.Next, needing to make connector 7 that another attachment 100 be driven to return to the working position that can be coupled with output shaft 3 It sets.Join Figure 16 to Figure 19, reverse slide (forward) operating parts 81, operating parts 81 no longer pushes down engagement device 871 (with reference to Figure 17), card Determine part 871 to reset under the action of dynamic clamping head and quiet clamping head 872.Next, such as Figure 18 to Figure 21, reversible sliding action part 81, operation Part 81 pushes engagement device 871 in the other side of engagement device 871, makes engagement device 871 that the first rack gear 82 be driven to travel forward, Jin Ertong It crosses the second rack gear 83 and first turns to new attachment 100 position corresponding with 3 axial direction of output shaft with follower link 7.Then, after Continuous reversible sliding action part 81, connector 7 will drive new attachment 100 to be axially moved and be coupled with output shaft 3, grasp simultaneously Workpiece 81 drives the movement of the second pilot unit 91 that actuator 92 is made to return to initial position from terminal location, during this, supports machine Structure 6 is motionless.

The first segment stroke of operating parts 81, it is therefore an objective to connector 7 be made to drive attachment 100 and output shaft 3 in the axial direction Separate and enter the accommodating space 61 of supporting mechanism 6；The second segment stroke of operating parts 81 is then to drive movement conversion mechanism fortune It is dynamic.Wherein, second segment stroke can carry out after first segment stroke is fully completed, i.e., rotate in operating parts 81 with follower link 7 The receiving location for entering supporting mechanism 6 to attachment 100 carries out again later.

Further, it has chatted above, the motion profile of connector 7 is first then to rotate axially away from output shaft 3；And it transports When being driven by operating parts 81, sliding pin 921 is first contacted with tail end 9122 from moving between two baffles 9111 manual converting mechanism Place, but during this, actuator 92 can't make supporting mechanism 6 mobile.That is, some stroke is null in second segment stroke Journey, actuator 92 can't make supporting mechanism 6 mobile.Therefore, if starting second segment again until first segment stroke is fully completed Stroke, the then time switched are more.

For this purpose, the movement travel of operating parts 81 is arranged to have one to interlock section stroke, i.e. operating parts 81 is transported in the present invention It is moved simultaneously with follower link 7 and movement conversion mechanism when dynamic.

Specifically, the gearing section stroke of operating parts 81 is arranged to operating parts 81 to turn to tool attached in band follower link 7 (Figure 10 to Figure 12), also the second pilot unit of drive simultaneously of operating parts 81 during part enters the receiving location of supporting mechanism 6 91 movements, move to sliding pin 921 and 9122 contact position of tail end.In this way, when operating parts 81 continues to move and act only on movement When switching mechanism, it is mobile that actuator 92 can immediately begin to driving supporting mechanism 6.Completed by driving second unit 91 in advance Its idle stroke, so as to shorten the overall used time of switching.

Interlocking section stroke can be understood as the leading portion for starting to carry out second segment stroke in the endpiece of first segment.Change speech It, when setting interlocks section, there are operating parts 81 at least three Duan Hangcheng only to make attachment 100 wherein in first segment stroke Separated in the axial direction with output shaft 3, connector 7 not fully rotate in place at this time, as can into rotation angle.Interlock section For second segment stroke, operating parts 81 turns to the position that attachment is contained in supporting mechanism, and operating parts 81 with follower link 7 It also drives the movement conversion mechanism to move to the state that the supporting mechanism will be driven for linear motion simultaneously, can pass through The size that actuator 92 is controlled in sliding slot 911 is realizing this purpose.In third section stroke, operating parts 81 continues to move and only act on When movement conversion mechanism, it is mobile that actuator 92 immediately begins to driving supporting mechanism 6.

The process of inventive article attachment switching is as follows:

The process that connector 7 drives attachment 100 isolated with output shaft 3: such as Fig. 6 to Fig. 9, operation is persistently slided backward Part 81, operating parts 81 relative to shell 1 move through rack gear, gear mechanism drive connection part 7 drive attachment 100 with it is defeated 3 axial separation of shaft, so that the subsequent connector 7 that is switched to drives another attachment 100 and output shaft 3 to be coupled.

Connector 7 drives attachment 100 into the process of the receiving location of supporting mechanism 6: such as 10 to Figure 12, operating parts 81 move backward relative to the continuation of shell 1, and drive connection part 7 surrounds the axis pivot perpendicular to 3 axial direction X1 of output shaft with band Power driven tools attachment 100 is contained in supporting mechanism 6, specifically: when the slot bottom of the second guide pin 72 and the second guiding groove 853 abuts against When, connector 7 will be whole to be rotated with the second guide pin 72 pivotally with the track of arc groove 8522.

The process of the movement diverter tool attachment 100 of supporting mechanism 6: such as Figure 13 to Figure 15, operating parts 81 moves and leads to backward Cross it is above-mentioned movement rotating mechanism adjustment supporting mechanism 6 position, make supporting mechanism 6 move to another attachment with connect The corresponding position of part 7.During this, supporting mechanism 6 drives the attachment 100 being coupled originally with connector 7 to divide with connector 7 From the attachment 100 for being supported in supporting mechanism 6 originally then follows supporting mechanism 6 to move and be coupled with connector 7.It is complete as a result, At the switching of attachment.

The process that another attachment 100 and output shaft 3 are coupled: such as Figure 16 to 21, the switching of attachment 100 is completed Afterwards, make 81 counter motion of operating parts, attachment 100 and the axial corresponding position of output shaft 3 are turned to first with band follower link 7 It sets, then connector 7 drives axial movement again, completes the mating of new attachment Yu output shaft 3.

When needing replacing attachment again, operating process process as mentioned before is similar.

Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, all should be considered as described in this specification.

The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.

Claims

1. a kind of power tool, comprising:

Shell；

Motor is contained in shell, is used for outputting rotary power；

The rotary motion that motor exports is passed to attachment by output shaft；

Supporting mechanism is used to support at least two attachments；

Connector is connected on casing and one at least two attachments can be made to be in the work being coupled with output shaft Position or receiving location positioned at supporting mechanism；

It is characterized by: the connector is able to drive the attachment in operating position along output shaft axially away from casing Direction is separated with output shaft, and the attachment is driven to be contained in supporting mechanism, and the attachment is in receiving location When its axis and output shaft axis it is angled, the supporting mechanism can be adjusted to another at least two attachments A position corresponding with connector, the connector be able to drive at least two attachments another match with output shaft It connects.

2. power tool as described in claim 1, it is characterised in that: the supporting mechanism first position and the second position it Between move, one in first position, at least two attachments connect with connector and is contained in supporting mechanism, second Position, the supporting mechanism drives one at least two attachments to separate with connector, and keeps at least two tools attached Another in part is connect with connector.

3. power tool as described in claim 1, it is characterised in that: the power tool further includes operating mechanism, the behaviour It include the operating parts being movably set on shell as mechanism, the operating parts is moved relative to shell to drive the connector to make The attachment is separated with output shaft.

4. power tool as claimed in claim 3, it is characterised in that: after the attachment is separated with output shaft, the behaviour Workpiece drives the connector to surround the axis pivot perpendicular to output shaft axial direction to drive the tool relative to shell movement Attachment is contained in supporting mechanism.

5. power tool as claimed in claim 3, it is characterised in that: the operating parts edge is parallel to output shaft axially direction Movement is to drive the connector.

6. power tool as claimed in claim 5, it is characterised in that: the direction of motion of the operating parts and the connector band The direction of motion for moving the attachment and output shaft separation is opposite.

7. power tool as claimed in claim 6, it is characterised in that: the operating mechanism further includes being driven by the operating parts The first rack gear, driving connector movement the second rack gear and the fixed tooth that is engaged simultaneously with the first rack gear and the second rack gear Wheel, the rotation axis of the fixed gear are fixed relative to shell.

8. power tool as claimed in claim 4, it is characterised in that: the operating mechanism further includes being arranged in shell and connection The first pilot unit between part, operating parts band follower link track defined by the first pilot unit moves, described Connector generates the linear motion and pivoting action for being parallel to output shaft axial direction.

9. power tool as claimed in claim 8, it is characterised in that: first pilot unit includes being connected on shell The first guide pin is arranged on the connector in first guiding groove, and first guide pin can be moved along the first guiding groove.

10. power tool as claimed in claim 9, it is characterised in that: first guiding groove includes interconnected straight trough And arc groove.

11. power tool as claimed in claim 10, it is characterised in that: first pilot unit further includes being connected to shell Or the second guiding groove in connector alternative one, second guiding groove is parallel with the straight trough and equal length, institute Stating the second guide pin of setting, two guide pin in another of both shell or connector can transport along the second guiding groove It is dynamic.

12. power tool as described in claim 1, it is characterised in that: position-limit mechanism is set between the connector and shell, The position-limit mechanism operationally limits or allows connector that the attachment in operating position is driven to separate with output shaft.

13. power tool as claimed in claim 12, it is characterised in that: the position-limit mechanism includes the limit being set on shell Position part and elastic element, the locating part can be moved between two positions to limit or connector is allowed to move, described Elastic element provides the elastic force that locating part moves to the position that limitation connector moves from the position for allowing connector to move.

14. power tool as described in claim 12 or 13, it is characterised in that: the power tool further includes being movably set in Operating parts on shell, the operating parts move releasing position-limit mechanism to connector along output shaft axially direction is parallel to Limitation.

15. power tool as described in claim 1, it is characterised in that: be provided with holding mechanism, the guarantor on the connector Mechanism is held operationally to limit or connector is allowed to separate with attachment.

16. power tool as claimed in claim 15, it is characterised in that: close on the position of the supporting mechanism on the shell Solution lock section is set, and it is attached to tool to release holding mechanism that the connector movement cooperates the holding mechanism with the solution lock section The limitation of part.

17. power tool as claimed in claim 15, it is characterised in that: the holding mechanism includes being set on connector Holder and elastic component, the elastic component provide the elastic force that holder stops attachment to separate with connector.

18. such as the described in any item power tools of claim 15 to 17, it is characterised in that: the holding mechanism is arranged two groups, The both direction separated respectively along connector with attachment is oppositely arranged.

19. power tool as described in claim 1, it is characterised in that: the connector along be parallel to output shaft axially away from The direction movement of shell drives attachment to separate with output shaft, and the connector surrounds the axis pivot perpendicular to output shaft axial direction Transhipment is dynamic to drive attachment to be located at supporting mechanism.

20. power tool as described in claim 1, it is characterised in that: the power tool further includes being movably set in shell On operating parts and movement automatic switching control equipment that the position of supporting mechanism is adjusted in response to operating parts, the branch Support mechanism moves to another position corresponding with connector at least two attachments under the action of automatic switching control equipment It sets.

21. power tool as claimed in claim 20, it is characterised in that: the automatic switching control equipment includes being connected to operating parts Movement conversion mechanism between supporting mechanism, the movement conversion mechanism are used to the operating parts edge being parallel to output shaft axis To movement be converted to the linear movement of the supporting mechanism.

22. power tool as claimed in claim 21, it is characterised in that: the movement conversion mechanism includes being connected to the behaviour The second pilot unit between workpiece and supporting mechanism and the actuator with the cooperation of the second pilot unit, the operating parts along When direction far from output shaft moves and second pilot unit is driven to move, the actuator draws the second pilot unit It leads down and moves to terminal location from initial position and supporting mechanism edge is driven to move perpendicular to output shaft axially direction.

23. power tool as claimed in claim 22, it is characterised in that: the operating parts is transported along towards the direction of output shaft When moving and second pilot unit being driven to move, the supporting mechanism is fixed relative to shell, and the actuator is from terminal position It sets and moves to initial position.

24. power tool as claimed in claim 22, it is characterised in that: second pilot unit has sliding slot, the drive One end of moving part is flexibly connected with supporting mechanism, and the other end of the actuator is along runner movement to which actuator can surround The rotation of one axis.

25. power tool as claimed in claim 24, it is characterised in that: be provided with a pair of of baffle, the gear in the sliding slot The sliding slot is divided into the first sliding groove and second sliding slot to communicate with each other by plate, and one end of the actuator is equipped with sliding pin, described When second pilot unit moves back and forth, followed in track that the sliding pin is formed between first sliding groove, a pair of of baffle, second sliding slot Ring movement.

26. power tool as claimed in claim 25, it is characterised in that: guide part is rotatably connected in the sliding slot, it is described Selectively sides different from guide part cooperate so that actuator drives supporting mechanism linear movement in opposite direction sliding pin.

27. power tool as claimed in claim 26, it is characterised in that: the first sliding groove and second sliding slot are respectively provided with directly Side and the bevel edge being connected with straight flange, wherein when the sliding pin is moved with respect to the second pilot unit along bevel edge, the supporting mechanism phase Shell is fixed, the relatively described supporting mechanism movement in one end of the actuator.

28. power tool as described in claim 1, it is characterised in that: the power tool further includes being movably set in shell On operating parts, the driving unit that is connected between operating parts and connector and be connected between operating parts and supporting mechanism Movement conversion mechanism is moved and is passed through by the driving unit band follower link when operating parts is moved relative to shell The movement conversion mechanism drives supporting mechanism movement.

29. power tool as claimed in claim 28, it is characterised in that: the operating parts is along being parallel to the output shaft axis To movement.

30. power tool as claimed in claim 28, it is characterised in that: the process of the operating parts movement includes at least two sections Stroke, first segment, the operating parts drive the connector to move together, and the movement conversion mechanism is fixed relative to shell； Second segment, the connector are fixed relative to shell, and the operating parts drives the movement conversion mechanism to move together.

31. power tool as claimed in claim 28, it is characterised in that: the process of the operating parts movement includes at least two sections Stroke, first segment, the operating parts work to the driving unit and do not work to the movement conversion mechanism；Second Section, the operating parts work to the movement conversion mechanism and do not work to the driving unit.

32. the power tool as described in claim 30 or 31, it is characterised in that: locking mechanism is set on the driving unit, The operating parts selectively drives locking mechanism to act on or not act on the driving unit in the axial direction.

33. power tool as claimed in claim 32, it is characterised in that: the locking mechanism includes hook and bias hook Dynamic clamping head and quiet clamping head, the dynamic clamping head and quiet clamping head provides the elastic force that hook resets, and the operating parts moves through axial abutting Hook is to act on driving unit, and the operating parts movement can also drive hook that the elastic force is overcome to move, so that institute It does not work when stating operating parts movement to the driving unit.

34. power tool as claimed in claim 28, it is characterised in that: the process of the operating parts movement includes at least three sections Stroke, first segment, the operating parts drive the connector to move together, and the movement conversion mechanism is fixed relative to shell； Second segment, the operating parts drive the connector and the movement conversion mechanism to move together；Third section, the connector It is fixed relative to shell, the operating parts drives the movement conversion mechanism to move together.

35. power tool as claimed in claim 34, it is characterised in that: in the first segment, described in the operating parts drives Connector moves together, and the connector drives attachment to separate in the axial direction with output shaft；In the second segment, the behaviour Workpiece drives the connector to turn to the position that attachment is contained in supporting mechanism, and the operating parts drives the movement Switching mechanism moves to the state that will drive the supporting mechanism；In the third section, operating parts drives the movement conversion Mechanism kinematic simultaneously drives the supporting mechanism for linear motion.

36. power tool as described in claim 1, it is characterised in that: the shell includes the master being axially arranged along output shaft Body and the main handle and assist handle being connected in main body, the main handle and assist handle are set along output shaft axially spaced-apart It sets, the supporting mechanism is set in assist handle.

37. power tool as described in claim 1, it is characterised in that: the supporting mechanism includes at least two for corresponding to Accommodate the accommodating space of at least two attachment.

38. power tool as described in claim 1, it is characterised in that: elasticity branch is arranged between the supporting mechanism and shell Support member, the elastic supporting member for supporting optical member compress supporting mechanism along the direction that attachment is separated with supporting mechanism.

39. power tool as described in claim 1, it is characterised in that: the attachment has the axis being coupled with output shaft Card slot is arranged in shank and the clamping part for connecting work head between the footstalk portion and clamping part, correspondence is set on the connector Fixture block is set, the connector is engaged with card slot by fixture block and connect with attachment.