CN103831791A - Attachment clamping mechanism and power tool with same - Google Patents
Attachment clamping mechanism and power tool with same Download PDFInfo
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- CN103831791A CN103831791A CN201210479970.5A CN201210479970A CN103831791A CN 103831791 A CN103831791 A CN 103831791A CN 201210479970 A CN201210479970 A CN 201210479970A CN 103831791 A CN103831791 A CN 103831791A
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- annex
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- clamp
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- elastic component
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Abstract
The invention provides an attachment clamping mechanism used for clamping an attachment on a spindle flange of a work spindle. The attachment clamping mechanism comprises a shell, a fastening flange, a driving device used for driving the fastening flange to move between a releasing position and a clamping position, a pushing component connected with the fastening flange, and a first elastic piece, wherein at the releasing position, the attachment can be taken out from the position between the spindle flange and the fastening flange, at the clamping position, the attachment is clamped between the spindle flange and the fastening flange, and the fastening flange is pressed towards the clamping position through the first elastic piece in a bias mode. The driving device comprises an operation piece and a reset component, the operation piece comprises a joint position, and at the joint position, the operation piece makes contact with the surface of the shell, the reset component enables the operation piece to automatically reset to the joint position, so that the operation can be flush with a holding portion of the shell when the fastening flange is at the clamping position, and a user can have a wider holding portion. The invention further provides a power tool with the attachment clamping mechanism.
Description
Technical field
The present invention relates to a kind of clamp mechanism, especially a kind of for annex is fixed to the clamp mechanism on work arbor releasedly; The invention still further relates to a kind of power tool with this clamp mechanism, especially a kind of power tool with annex being fixed to releasedly to the clamp mechanism on work arbor.
Background technology
There are in the market the various power tools with annex clamp mechanism, wherein a kind of power tool with annex clamp mechanism, comprise: drive the work arbor of annex, annex is fixed between the retaining part and tightening member of the end in the face of instrument of work arbor, make tightening member prop up at the off-position and the tightening member that remove tightening member from work arbor the mechanism moving between the clamped position by retaining part by spring element, tightening member comprises the clamp shaft that can be inserted in work arbor, clamp shaft remains in clamped position by the latch assembly in work arbor, and can be removed in off-position, latch assembly has the collar, clamping component can move radially in the recess that remains on the collar and against the collar, clamping component has the inclined surface coordinating with the inclined surface on the collar in the side towards instrument, make the collar cause the shock on clamping component towards center against the athletic meeting of the inclined surface of clamping component, to be work arbor do oscillating motion around self axis to the operation principle of this power tool, it further comprises casing, be arranged on the motor in casing, by motor-driven main shaft, main shaft has the eccentric part of a rotation and the setting of offset rotation axis, one shift fork is connected on working cell by main shaft drives manipulation, one end of shift fork is pivotally connected on work arbor, the other end is formed with the fork of a pair of branch and is stuck on the eccentric part on main shaft, work arbor is vertical substantially with main shaft rotation, thereby main shaft converts shift fork to around the rotation of rotation and moves and work arbor is moved and drive annex work along the pivot of work arbor.And on work arbor, be provided with after different annexes as user, can realize multiple different operating function.Common annex comprises straight blade, saw blade, triangle frosted dish, scraper etc., can realize as work requirements such as sawing, cut, grind, scrape.
But, the annex clamp mechanism of above-mentioned power tool, in dispose procedure, user must together remove clamp shaft and annex, same, in clamping process, user also must together be clamped in clamp shaft and annex on work arbor, this method of clamping has brought operational inconvenience, once user has lost clamp shaft accidentally in addition, annex clamp mechanism cannot be carried out work, power tool with this annex clamp mechanism also cannot be worked, also have this annex to clamp mechanism structure complexity, required part is more, and cost is comparatively expensive.
In addition, also have a kind of power tool with this annex clamp mechanism, it comprises the tool body that motor is housed; Comprise the clamp assembly of the first clamping component, it moves between closing position and release position with respect to annex, keep annex at closing position clamp assembly, depart from and allow annex to remove from clamp assembly at the first clamping component of release position clamp assembly and annex, the first clamping component keeps connecting with clamp assembly simultaneously; There is the actuator that operating parts divides, this actuator is attached to movingly tool body between primary importance and the second place, in the close position at primary importance clamp assembly, the motion dividing at the operating parts of second place actuator causes clamp assembly to move to release position.
But, while using this annex clamp mechanism to carry out clamping annex, the shank of its annex must pass from work arbor, therefore the shank of its annex is provided with opening, thereby realize, the annex of shank opening is clamped or discharged, its annex that shank is remained silent cannot clamp or discharge, and has reduced the versatility of this annex clamp mechanism.
Summary of the invention
In order to solve the defect existing in above-mentioned prior art, be necessary to provide a kind of simple in structure, without additional lock mandrel and the high annex clamp mechanism of annex versatility and with the power tool of this annex clamp mechanism.
The invention provides a kind of annex clamp mechanism, for accessory clamp is held in to work arbor, this work arbor has an axle flange, and this annex clamp mechanism comprises: housing; Clamp flange; For the drive unit that this clamp flange is moved between off-position and clamped position, in this off-position, this annex can take out between this axle flange and this clamp flange, and in this clamped position, this accessory clamp is held between axle flange and clamp flange; The thrust component being connected with this clamp flange; The first elastic component, this clamp flange is by this first elastic component and by towards this clamped position bias voltage, wherein, this drive unit comprises operating assembly and reset assembly, this operating assembly comprises operating parts, this operating parts has bonding station, in this bonding station, operating parts contacts with this surface of shell, operating parts is automatically reset to bonding station by this reset assembly, thereby make operating parts be positioned in clamped position and can flush with the holding area of housing at clamp flange, make user can have broader holding area.This technical scheme does not need the together clamped and release of independent clamp shaft and annex on the one hand, thereby has eliminated the hidden danger that user easily loses clamp shaft, has saved cost yet; The annex that can also remain silent to shank on the other hand clamps, and has improved the versatility of this annex clamp mechanism.
Further, this thrust component is positioned at a side of this work arbor, makes in structure compacter.
Further, this reset assembly comprises thrust piece, this thrust piece has pushing position and reset position, in this pushing position, this thrust piece contacts with transfer function power to thrust component with this thrust component, in this reset position, thereby this thrust piece and the disengaging of this thrust component make operating parts automatically reset to bonding station.
It automatically resets and realizes by the following technical solutions, this operating mechanism further comprises the second elastic component, the two ends of this second elastic component are arranged on respectively on housing and this operating parts, this reset assembly comprises pressing piece, the 3rd elastic component and the 4th elastic component, the two ends of the 3rd elastic component act on respectively on this housing and this thrust piece, the two ends of the 4th elastic component are arranged on respectively on this pressing piece and this operating parts, the active force of this second elastic component is greater than the active force of the 3rd elastic component, and the active force of the 3rd elastic component is greater than the active force of the 4th elastic component.
For the ease of user's operation, this operating assembly may further include pivot, and this operating parts is around pivot pivotable, and thrust piece is arranged between operating parts and pivot, and this operating parts is arranged to lever form, can be laborsaving.
In addition, tangible closing component structure is set on axle flange, is provided with corresponding shape closing component structure on annex, this axle flange is connected in locking manner with this annex shape, so that transmitting torque without relative rotation between annex and axle flange.
More accurately annex shape closing component structure is navigated on the shape closing component structure of axle flange for the ease of user, clamp flange is provided with the opening of the mutual correspondence position of the corresponding shape closing component structure in shape closing component structure and the annex for seeing axle flange clearly.
The present invention also provides a kind of power tool with annex clamp mechanism as above, and this power tool comprises: be contained in the motor in housing, this motor has driving shaft; The power source of power is provided to motor; Convert rotatablely moving of this motor drive shaft the transmission mechanism of work arbor around the motion of himself axis oscillating to.On swing-type power tool, use this annex clamp mechanism, annex is held more firm, it is more convenient to operate.
Further, transmission mechanism comprises eccentric part and connector, and this eccentric part is arranged on driving shaft, one end of this connector is connected with this eccentric part, the other end is connected with work arbor, and thrust component, between work arbor and eccentric part, makes the structure of this power tool compacter.
Brief description of the drawings
Fig. 1 is the stereogram with the power tool of annex clamp mechanism in first embodiment of the invention;
Fig. 2 is the stereogram that removes the annex clamp mechanism after housing in Fig. 1;
Fig. 3 is the upward view of the annex clamp mechanism in Fig. 2.
Fig. 4 is the partial sectional view that the operating parts of the annex clamp mechanism in Fig. 1 is positioned at bonding station;
Fig. 5 is the partial sectional view that the operating parts of the annex clamp mechanism in Fig. 1 is positioned at primary importance;
Fig. 6 is the partial sectional view that the operating parts of the annex clamp mechanism in Fig. 1 is positioned at the second place;
Fig. 7 is the cutaway view that removes the annex clamp mechanism after housing in Fig. 4;
Fig. 8 is the cutaway view that removes the annex clamp mechanism after housing in Fig. 5;
Fig. 9 is the cutaway view that removes the annex clamp mechanism after housing in Fig. 6;
Figure 10 is with the partial sectional view after the removal housing of the power tool of annex clamp mechanism in second embodiment of the invention.
Detailed description of the invention
As Figure 1-4, in the first embodiment of the present invention, disclose a kind of power tool 1 with annex clamp mechanism, described as an example of swing-type power tool example in the present embodiment.Power source 3 that power tool 1 comprises housing 2, be connected with housing 2, be contained in motor 4 and driving shaft 5, transmission mechanism 6, work arbor 7 and annex clamp mechanism 10 in housing 2.
Please, with further reference to Fig. 4-9, annex clamp mechanism 10 comprises driver part (figure is mark not), thrust component 13, clamp flange 14 and the first elastic component 15.Thrust component 13 is arranged on a side that is positioned at work arbor 7, further, thrust component 13 is arranged between eccentric part 61 and work arbor 7, thrust component 13 has a longitudinal axis Z that is parallel to the axis Y of work arbor, on transmission mechanism 6, be also provided with the support portion 63 for support and guiding thrust component 13, thrust component 13 is fixedly connected with clamp flange 14, and both also can be arranged to one.The thickness of clamp flange 14 is less than or equal to the vertical height of the step 91 of annex 9, so that annex 9 carries out operation at small space place.On axle flange 71, be provided with the support portion (figure is mark not) of being convenient to thrust component 13 and passing and support thrust component 13, axle flange 71 has in the expansion section of thrust component 13 1 sides (figure is mark not), this expansion section, clamp flange 14 and thrust component 13 have formed the balancing weight of center of gravity in work arbor 7 one sides, the center of gravity of annex 9 is positioned at the opposite side of work arbor 7, in swing process, the expansion section of axle flange, clamp flange 14 and thrust component 13 are done and the rightabout swing of annex 9, just can offset the vibration being produced by annex 9, thrust component 13 can be delivered to user on clamp flange 14 to the power applying on drive unit.When the shank 90 of annex 9 is when remaining silent, annex 9 is without being clamped in axle flange 71 and clamp flange 14 through thrust component 13.Drive unit can drive clamp flange 14 to move between off-position and clamped position, and in off-position, annex 9 can be from taking out between axle flange 71 and clamp flange 14; In clamped position, annex 9 is clamped between axle flange 71 and clamp flange 14; The first elastic component 15, preferably can be set to stage clip, its one end is arranged on axle flange 71, the other end be arranged on thrust component 13 along radially extend boss 130 on, boss 130 can be an independent circular gasket, also can be the step that radially extend integrally formed with thrust component 13, be understandable that, the first elastic component 15 also can be set to other member well known to those skilled in the art, as elastic caoutchouc, leaf spring etc., clamp flange 14 is by this first elastic component 15 and by towards clamped position bias voltage.User is delivered to clamp flange 14 to the power applying on drive unit, and the active force that clamp flange 14 overcomes the first elastic component 15 moves to off-position, thereby can be by annex 9 from taking out between clamp flange 14 and axle flange 71.
Figure 10 shows the second embodiment of annex clamping device 10 ', different from the first embodiment is, clamp flange 14 ' and thrust component 13 ' are separated with axle flange 71 ', and thrust component 13 ' and clamp flange 14 ' can together not swung with work arbor 7 '.Specifically, axle flange 71 ' does not arrange expansion section, this axle flange 71 ' is symmetrical arranged along its rotation Y ', thrust component 13 ' is supported and is led by the first support portion 131 ' and the second support portion 132 ' that are arranged on housing, one end of elastic component 15 ' is arranged on the boss 130 ' of thrust component 13 ', the other end is arranged on the second support portion 132 ', on clamp flange 14 ', be provided with plane bearing 141 ', the needle roller of plane bearing 141 ' can roll in annex swing process, but the end plate of plane bearing 141 ' and clamp flange 14 ' together do not swing with annex and work arbor 7 ', like this friction that can reduce between clamp flange 7 ' and annex is set.
Below the driver part structure of the annex clamp mechanism 10 in the first embodiment is described in detail.
Please again consult Fig. 4-Fig. 9, driver part comprises operating assembly 11 and reset assembly 12.Operating assembly 11 comprises pivot 110, the second elastic component 111 and operating parts 112.Pivot 110 is arranged on housing 2, this second elastic component 111 preferably can be set to torsion spring, this torsion spring is arranged on pivot 110, one end is arranged on housing 2, the other end is arranged on operating parts 112, operating portion 112 by the second elastic component 111 by the direction bias voltage towards approaching housing 2, be understandable that, the second elastic component 111 also can be set to other other members well known to those skilled in the art, as elastic caoutchouc, leaf spring etc., this operating parts 112 is preferably set to the spanner around pivot 110 pivotables, the axis of this pivot 110 is perpendicular to the axis Y of work arbor 7, well known to those skilled in the art, operating parts 112 also can be arranged to push button or button etc. and be convenient to the structure that user operates.Reset assembly 12 comprises pivot 120, thrust piece 121, pressing piece 122, the 3rd elastic component 123 and the 4th elastic component 124.Pivot 120 is arranged on operating parts 112, thrust piece 121 and pressing piece 122 are separately positioned on the both sides of pivot 120, thrust piece 121 is arranged between operating parts 112 and pivot 110, thrust piece 121 and operating parts 112 are positioned at the homonymy of work arbor 7, one end of the 3rd elastic component 123 is arranged on housing 2, the other end can act on thrust piece 121, the 3rd elastic component 123 preferably can be set to stage clip, thrust piece 121 by the 3rd elastic component 123 by the direction bias voltage towards departing from thrust component 13, be understandable that, the 3rd elastic component 123 also can be set to other member well known to those skilled in the art, as elastic caoutchouc, leaf spring etc., the 4th elastic component 124 is arranged on pivot 120, its two ends are separately positioned on operating mechanism 11 and pressing piece 122, the 4th elastic component 124 is preferably set to torsion spring, thrust piece 121 by the 4th elastic component 124 by the direction bias voltage towards engaging with thrust component 13, be understandable that, the 4th elastic component 124 also can be set to other other members well known to those skilled in the art, as elastic caoutchouc, leaf spring etc.Drive unit also can only include operating assembly 11 and thrust piece 121, and cancel other member in reset assembly 12, such setting, operating assembly 11 comprises operating parts 112, and operating parts 112 moves between primary importance and the second place, in primary importance, thrust piece 121 departs from thrust component 13, clamp flange 14 is positioned at clamped position, and in the second place, thrust piece 121 drives clamp flange 14 to off-position.
Below the operating process of the annex clamp mechanism 10 in the first embodiment is described in detail.
From the direction of arrow shown in Fig. 4 and Fig. 7, operating parts 112 is moved to primary importance as shown in Figure 5 and Figure 8 from bonding station, the thrust piece 121 in reset assembly 12 is biased into pushing position under the effect of the 4th elastic component 124, from the direction of arrow shown in Fig. 4 and Fig. 7, operating parts 112 is moved to the second place as shown in Fig. 6 and Fig. 9 from primary importance again, thrust piece 121 is applied to force transmission on operating parts 112 to thrust component 13 by user, and overcome the active force of the first elastic component 15, thrust component 13 and clamp flange 14 are moved down, clamp flange 14 departs from from the surface of annex 9 and reserves enough gaps and makes annex 9 to take out being removed as shown in the direction of arrow between clamp flange 14 and axle flange 71 as Fig. 6 and Fig. 9, after person to be used puts into the direction of arrow and again annex 9 is put between clamp flange 14 and axle flange 71 by Fig. 6 and Fig. 9, unclamp operation part 112, thrust component 13 and clamp flange 14 are under the effect of the first elastic component 15, return to clamped position, now user's operating position is positioned at the primary importance shown in Fig. 4 and Fig. 7, user operates the pressing piece 122 in reset assembly 12, thrust piece 121 is moved to reset position from pushing position, thereby make operating parts automatically reset to bonding station, in order to ensure effectively carrying out of this process, need such setting, the active force of the second elastic component 111 is greater than the active force of the 3rd elastic component 123, the active force of the 3rd elastic component 123 is greater than the active force of the 4th elastic component 124.When thrust piece 121 moves to reset position from pushing position, the active force of cause the 3rd elastic component is greater than the active force of the 4th elastic component 124, thrust piece 121 cannot automatically restore to biased position, but be biased into reset position by such active force, once thrust piece 121 departs from thrust component 13, the active force of cause the second elastic component 111 is greater than the active force of the 3rd elastic component 123, makes operating parts 112 be arrived bonding station by autobias.Be understandable that, the direction of arrow of putting into and take out shown in Fig. 6 and Fig. 9 is the side surface direction from work arbor 7, preferably, can be set to the direction vertical with the rotation Y of work arbor 7.
In Fig. 3 and Fig. 4, also show and on clamp flange 14, be provided with opening 140, user is in the operating process of clamping annex 9, can see accurately the mutual correspondence position of the corresponding shape closing component structure 93 in shape closing component structure 710 and the annex 9 of axle flange 71 clearly, be convenient to user and rapidly and accurately annex 9 is clamped between clamp flange 14 and axle flange 71.
Be understandable that, annex clamp mechanism 10 not only can be used on swing-type power tool, also can use on the power tools such as hand-operated tools and angle mill, electric circular saw.When annex clamp mechanism 10 is during for hand-operated tools, annex clamp mechanism 10 can comprise housing 2; For driving the work arbor 7 of annex 9, accessory clamp is held between axle flange 71 and clamp flange 14; For the drive unit that clamp flange 14 is moved between off-position and clamped position, in off-position, annex can be from taking out between axle flange 71 and clamp flange 14, in clamped position, annex 9 is clamped between axle flange 71 and clamp flange 14, the thrust component 13 being connected with clamp flange; Clamp flange 14 is by the first elastic component 15 and by towards clamped position bias voltage.Such annex clamp mechanism 10 can be used in hand-operated tools.Well known to those skilled in the art, as long as the transmission mechanism in swing-type power tool is replaced to the transmission mechanism that other power tool needs, annex, under the effect of corresponding transmission mechanism, is processed workpiece, this annex clamp mechanism can be used for to other power tool.
Disclosed annex clamp mechanism and be not limited to the structure of the content described in above embodiment and accompanying drawing representative with the power tool of this annex clamp mechanism.Shape to member wherein on basis of the present invention and the apparent change that position is done, substitute or amendment, all within the scope of protection of present invention.
Claims (10)
1. an annex clamp mechanism, for accessory clamp is held in to work arbor, described work arbor has an axle flange, and this annex clamp mechanism comprises: housing; Clamp flange; For the drive unit that described clamp flange is moved between off-position and clamped position, in described off-position, described annex can take out between described axle flange and described clamp flange, and in described clamped position, described accessory clamp is held between axle flange and clamp flange; The thrust component being connected with described clamp flange; The first elastic component, described clamp flange is by described the first elastic component and by towards described clamped position bias voltage, it is characterized in that: described drive unit comprises operating assembly and reset assembly, described operating assembly comprises operating parts, described operating parts has bonding station, in described bonding station, operating parts contacts with described surface of shell, and operating parts is automatically reset to bonding station by described reset assembly.
2. annex clamp mechanism according to claim 1, is characterized in that: described thrust component is positioned at a side of described work arbor.
3. annex clamp mechanism according to claim 1, it is characterized in that: described reset assembly comprises thrust piece, described thrust piece has pushing position and reset position, in described pushing position, described thrust piece contacts with transfer function power to thrust component with described thrust component, in described reset position, thereby described thrust piece and the disengaging of described thrust component make operating parts automatically reset to bonding station.
4. annex clamp mechanism according to claim 3, it is characterized in that: described operating mechanism comprises the second elastic component, the two ends of described the second elastic component are arranged on respectively on housing and described operating parts, described reset assembly comprises pressing piece, the 3rd elastic component and the 4th elastic component, the two ends of described the 3rd elastic component act on respectively on described housing and described thrust piece, the two ends of described the 4th elastic component are arranged on respectively on described pressing piece and described operating parts, the active force of described the second elastic component is greater than the active force of the 3rd elastic component, the active force of described the 3rd elastic component is greater than the active force of described the 4th elastic component.
5. annex clamp mechanism according to claim 3, is characterized in that: described thrust piece and described operating parts are positioned at the homonymy of described work arbor.
6. annex clamp mechanism according to claim 1 and 2, is characterized in that: described operating assembly comprises pivot, described operating parts is around described pivot pivotable, and described thrust piece is arranged between described operating parts and pivot.
7. annex clamp mechanism according to claim 1 and 2, is characterized in that: described axle flange arranges tangible closing component structure, and described annex is provided with corresponding shape closing component structure, and described axle flange is connected in locking manner with described annex shape.
8. annex clamp mechanism according to claim 7, is characterized in that: described clamp flange is provided with the opening of the mutual correspondence position of the corresponding shape closing component structure in shape closing component structure and the annex for seeing axle flange clearly.
9. band, just like a power tool for the annex clamp mechanism described in claim 1-5 any one, comprising: be contained in the motor in housing, described motor has driving shaft; The power source of power is provided to motor; Convert rotatablely moving of described motor drive shaft the transmission mechanism of work arbor around the motion of himself axis oscillating to.
10. power tool according to claim 9, it is characterized in that: described transmission mechanism comprises eccentric part and connector, described eccentric part is arranged on described driving shaft, one end of described connector is connected with described eccentric part, the other end is connected with described work arbor, and described thrust component is between described work arbor and described eccentric part.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210479970.5A CN103831791B (en) | 2012-11-23 | 2012-11-23 | Annex clamp system and the power tool with this annex clamp system |
US13/959,069 US9486934B2 (en) | 2012-11-23 | 2013-08-05 | Accessory clamping mechanism and power tool having the same |
GB1314078.5A GB2508258B (en) | 2012-11-23 | 2013-08-06 | Accessory clamping mechanism and power tool having the same |
DE202013103809U DE202013103809U1 (en) | 2012-11-23 | 2013-08-22 | Accessory clamping device and power tool equipped therewith |
FR1361092A FR2998501B3 (en) | 2012-11-23 | 2013-11-14 | CLAMPING MECHANISM FOR ACCESSORIES AND ELECTRIC TOOL COMPRISING THE SAME |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201210479970.5A CN103831791B (en) | 2012-11-23 | 2012-11-23 | Annex clamp system and the power tool with this annex clamp system |
Publications (2)
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CN103831791A true CN103831791A (en) | 2014-06-04 |
CN103831791B CN103831791B (en) | 2016-04-27 |
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Application Number | Title | Priority Date | Filing Date |
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CN201210479970.5A Active CN103831791B (en) | 2012-11-23 | 2012-11-23 | Annex clamp system and the power tool with this annex clamp system |
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CN (1) | CN103831791B (en) |
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CN108274435A (en) * | 2017-01-06 | 2018-07-13 | 南京德朔实业有限公司 | Power tool |
CN110997231A (en) * | 2017-08-11 | 2020-04-10 | 罗伯特·博世有限公司 | Quick-action clamping device for a portable power tool, in particular an angle grinder, in particular having at least one rotatably drivable output shaft |
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US20020170408A1 (en) * | 2001-05-21 | 2002-11-21 | Markus Hartmann | Electrical tool with a quick-action clamping device |
CN1946517A (en) * | 2004-04-23 | 2007-04-11 | C.&E.泛音有限公司 | Powered hand tool comprising a clamping device for a tool |
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CN110997231A (en) * | 2017-08-11 | 2020-04-10 | 罗伯特·博世有限公司 | Quick-action clamping device for a portable power tool, in particular an angle grinder, in particular having at least one rotatably drivable output shaft |
CN110997231B (en) * | 2017-08-11 | 2023-05-23 | 罗伯特·博世有限公司 | Quick clamping device, machine tool system and machine tool application |
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