CN102785162B - Power tool - Google Patents
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- CN102785162B CN102785162B CN201110128114.0A CN201110128114A CN102785162B CN 102785162 B CN102785162 B CN 102785162B CN 201110128114 A CN201110128114 A CN 201110128114A CN 102785162 B CN102785162 B CN 102785162B
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- driving shaft
- operation element
- power tool
- clamping mechanism
- clamped
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Abstract
The invention provides a power tool which comprises a driving shaft driving a work element, a clamping mechanism, and an operating piece which is used for manual operation, wherein the clamping mechanism clamps the work element on the driving shaft, is provided with a clamping position and a releasing position, the work element is clamped on the driving shaft at the clamping position, and the work element can be taken down from the driving shaft at the releasing position; the clamping mechanism is further provided with a rotation position, the work element can rotate by an angle relative to the driving shaft at the rotation position, and the operating piece is provided with an operating position corresponding to the rotation position. Compared with the existing clamping mechanism which is only provided with the clamping position and the releasing position, angle adjustment of the work element can be carried out without taking down the work element, so that the power tool is time saving and labor saving.
Description
Technical field
The present invention relates to a kind of power tool, this instrument comprises for the output shaft of driven tool and the securing member for operation element being clamped to described output shaft end, also comprise one for making described securing member can the mobile device of movement between off-position and clamped position, at off-position place, securing member can be removed from output shaft by departing from mobile device, otherwise, at clamped position place, securing member is sealed and flexible member synergy and make the firm clamping of operation element by output shaft end by mobile device.
Background technology
From the known a kind of power tool with fast fixture of US6569001B2, this handheld tool is electric angle grinder, electric angle grinder is provided with the output shaft of hollow wherein, being provided with in hollow mandrel can along the clamping device of the axial movement between clamped position and off-position of axle, this clamping device comprises the clamping flange being provided with threaded in the middle part of in the of, this clamping flange is used for coordinating with the relative flange of hollow mandrel end thus making operation element be clamped between the two, one thrust component coordinated with threaded is also set in hollow mandrel, when clamped position, also this clamped position is remained under spring force in the screw thread of threaded precession thrust component, when off-position, thrust component promotes threaded thus drives clamping flange overcome spring-force driven dual and depart from clamped operation element surface, frictional force is there is not due to now clamping flange with when being relatively rotated between clamping operation element, so without the need to just manually the threaded of clamping flange being screwed out thrust component by annex, operation element can be changed easily.
Although operation element just can be clamped on the output shaft of handheld tool without the need to aid by this clamping device substantially, but this clamping device is only applicable to clamping by the operation element of rotating drive, if operation element is driven by vibrating device, to make operation element along the longitudinal axis swing of output shaft, then this causes in the both direction of rotating, producing larger sudden change torque and having great impact, operation element can not be guaranteed fully firmly to clamp by known clamping device.
Above-mentioned power tool of the prior art also has a defect, the operation element clamped exactly thereon can not carry out multi-angle adjustment, because, operation element by clamping device otherwise be in be clamped and the state of executable operations, be in and be released and the state that can take out, when needs carry out the operation of multi-angle operating mode time, operation element needs take off and again clamped, this operation effort and time-consuming, convenient not.
Summary of the invention
For the defect that above-mentioned prior art exists, the invention provides a kind of power tool, clamping operation element on its driving shaft can carry out angular adjustment.
For solving above technical problem, the present invention adopts following technical scheme:
A kind of power tool, comprises: the driving shaft driving operation element, clamp the clamping mechanism of described operation element, described clamping mechanism has clamped position and off-position, and on described clamped position, the relatively described driving shaft of described operation element is fixed, on described off-position, described operation element can take off from described driving shaft, and can the manual operating parts of people be supplied, wherein, described power tool also comprises torsion drives structure, described driving shaft has a longitudinal axis, described operating parts drives described torsion drives structure to move along described longitudinal axis, make described torsion drives structure engage with described driving shaft or throw off to engage, described clamping mechanism also has position of rotation, on described position of rotation, described operation element can rotate an angle relative to described driving shaft, described operating parts has an operating position corresponding with described position of rotation, described clamping mechanism is at clamped position, described operation element is clamped, described torsion drives structure engages with described driving shaft, described clamping mechanism is at position of rotation, described operation element is clamped, described torsion drives structure is thrown off with described driving shaft and is engaged, described clamping mechanism is in off-position, described torsion drives structure is thrown off with described driving shaft and is engaged, described operation element can take off from described driving shaft.
Further, described driving shaft is driven by the mode of vibration about its longitudinal axis.
Further, described driving shaft comprises the mandrel segment being configured to hollow, described clamping mechanism comprises tightening member and latch assembly, and described tightening member has the clamp shaft that can extend in described axle, and described clamp shaft can be locked in described axle by described latch assembly.
Further, on described clamped position, described tightening member is locked by described latch assembly and is positioned in the first latched position, on described position of rotation, described tightening member is locked by described latch assembly and is positioned in the second latched position, on described off-position, described tightening member can get loose from described latch assembly.
Further, described latch assembly comprises locking member, middleware and moving member, described middleware is engaged between described locking member and described moving member, and described moving member is provided with recess and flat part, and described middleware selectively abuts with described recess or described flat part.
Further, in first, second latched position described, described locking member is connected with shape closing component structure with the clamp shaft of described tightening member.
Further, described shape closing component structure comprises and is located at the circumferential groove sealed for shape on described clamp shaft and described locking member or tooth.
Further, described driving shaft is connected with can along the flange part of the axis direction movement of driving shaft, described flange part has first end and the second end, and described first end and described driving shaft adaptation, described operation element can be clamped on described tightening member by described second end.
Further, on described clamped position, the first end of described flange part can not relatively rotate with described driving shaft and be connected, and on described position of rotation, the first end of described flange part and the axle head of described driving shaft are thrown off.
By adopting above technical scheme, following Advantageous Effects can be realized:
1) clamping mechanism for clamping operation element has operation element clamped position, position of rotation and off-position, with existing have clamp and release position clamping mechanism compared with, without the need to operation element being taken off the angular adjustment that can realize operation element, time saving and energy saving.
2) clamping mechanism comprises tightening member, latch assembly and operating parts, with the connected mode locking that shape is sealed between latch assembly and tightening member, can fast and reliably operation element be fastened on output shaft, and without the need to using the aid of such as spanner etc., be different from the connected mode that screw thread in prior art screws, stronger clamping force can be realized, even if under the impact condition occurred in the instrument such as driven by vibratory driver, this clamping force is also enough to guarantee reliably and securely to be clamped by operation element.
3) operating parts has the operating position corresponding with the position of rotation of clamping mechanism, operate simple and easy, convenient, feel is strong.
Accompanying drawing explanation
Fig. 1 a is the schematic diagram that power tool of the present invention is in when its operation element is clamped state, and now, clamping mechanism is on clamped position;
Fig. 1 b is the external view of Fig. 1 a;
Fig. 2 a is the view of power tool of the present invention when being in the rotatable adjustment angle of its operation element, and now, clamping mechanism is on rotatable position;
Fig. 2 b is the external view of Fig. 2 a;
Fig. 3 a is the view that power tool of the present invention is in when its operation element can be removed, and now, clamping mechanism is on off-position;
Fig. 3 b is the external view of Fig. 3 a;
Fig. 4 a is that operation element partly cuts open figure when being clamped state, and now, operating parts is on the first operating position;
Partly cut open figure when Fig. 4 b is operation element rotatable adjustment angle, now, operating parts is on the second operating position;
Fig. 4 c is that operation element partly cuts open figure when can be removed, and now, operating parts is on the 3rd operating position;
Fig. 5 is the schematic diagram that power tool of the present invention is also provided with the little spring acted on inner flange in its drive spindle;
Fig. 6 is the another kind of embodiment of the clamping mechanism of power tool of the present invention;
Fig. 7 is the explosive view of clamping mechanism.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
As shown in Fig. 1 a to Fig. 4 c and Fig. 7, the present invention preferably a kind of mode with vibration drives the power tool 1 of operation element 17 to be described, the Power Available Shaft of power tool 1 supported by bearing 6,20 and under the effect of vibration rack 8 around its axis Y with the reciprocally swinging of little deflection angle high frequency, driving shaft is configured to support axle journal 7 part and hollow mandrel 15 part, vibration rack 8 interference is fitted in and supports on axle journal 7, supports axle journal 7 and press-fits with hollow mandrel 15 interference.
Operation element 17 can be clamped on power tool 1 fast by clamping mechanism, and clamping mechanism comprises a tightening member 18 and locks the latch assembly of this tightening member 18.Wherein, tightening member 18 is configured to flange portion 181 and is substantially perpendicular to the clamp shaft 182 of flange portion 181, and clamp shaft 182 can be inserted in axle 15 and the assembly locking or unclamp of being locked; Latch assembly comprises pressure ring 23, latch segment 10 and steel ball 11, pressure ring 23 is set in outside axle 15, pressure ring 23 is provided with hole 231, pin 12 is installed in hole 231, pin 12 through in axle 15 in axial direction on the elongated slot 151 offered, pin 12 through behind the hole 231 of pressure ring 23 and the elongated slot 151 of work arbor 15, then overlaps upper press ring cover 24, can skid off by anti-shotpin 12, pin 12 can with mobile in pressure ring 23 together elongated slot 151 in the axial direction under the effect of depression bar 5 power simultaneously.Big spring 13 is propped up by pin 12 in axle 15, and the position that latch segment 10 and clamp shaft 182 engage is provided with shape closing component structure, and this shape closing component structure can be constructed to cannelure or tooth.
Latch segment 10 is preferably 2, its relative clamp shaft 182 is symmetrical arranged, and can have certain displacement on radial and axial, and specific implementation is: axially, latch segment 10 lower end is promoted by two pins 12, reaches the upper limit spacing by the lower surface 71 supporting axle journal 7; Upper end by stage clip 9 bias voltage, under be fixed on the spacing (not shown) of limiting plate supported on axle journal 7 in limited time.In radial direction, two latch segments 10 can be promoted to draw close by steel ball 11, and also can separate under the effect of clamp shaft 182 pulling force, because there is an inclined-plane 232 pressure ring 23 upper end, steel ball along pressure ring inclined-plane 232 and can face 233 rollings directly.When steel ball faces 233 rolling directly along pressure ring, two latch segments 10 are drawn close, and latch segment 10 and clamp shaft 182 engage; When steel ball 11 rolls along pressure ring inclined-plane 232, separately, clamp shaft 182 and latch segment 10 throw off engagement to two latch segments 10.
Power tool of the present invention also comprises the operating assembly that can operate clamping mechanism for staff, operating assembly comprises operation spanner 2, eccentric block 3, pivotable 4 and depression bar 5, wherein, spanner 2, eccentric block 3 and pivot 4 elastic conjunction, pivot 4 can rotate around casing 1 ', correspondingly spanner 2 and eccentric block 3 also can rotate around casing 1 ', and eccentric block 3 is made up of multistage lines with the contact surface of depression bar 5.Depression bar 5 upper end can be promoted by eccentric block 3, and depression bar 5 lower end props up pressure ring cover 24, and depression bar 5 can move up and down, and can promote pressure ring 23 descending when moving down.
In present embodiment, also flange assembly is provided with between the axle head and the tightening member 18 of clamping mechanism of axle 15, flange assembly can move along the direction of the axis Y of power output shaft and can carry out transposition adjustment around this axis Y, flange assembly comprises inner flange 16 and inner flange pipe 14, inner flange pipe 14 presses fit into inner flange 16, and the two can be again one.Inner flange pipe 14 can be promoted by pin 12, inner flange 16 has with the first end 163 of axle 15 adaptation and for operation element 17 being clamped to the second end 164 in the flange portion 181 of tightening member 18, and first end 163 is provided with the boss 161 together with can being fitted to the groove 152 of axle 15 lower end.Second end 164 is provided with the torsion drives structure driving operation element 17 circuit oscillation, and this torsion drives structure can be protruding 165, and the axially downward spacing back-up ring 19 by binding round on inner flange pipe 14 of inner flange pipe 14 and inner flange 16 realizes.Back-up ring 19 can be against on axle 15 inner surface, prevents inner flange pipe 14 from skidding off from axle 15 together with inner flange 16.
Introduce process and principle that power tool of the present invention clamps operation element below in detail:
Clamped condition: see Fig. 1 a, Fig. 1 b, eccentric block 3 contacts with depression bar 5 disengagement, thus pressure ring 23 upper end is freely, so under the effect of big spring 13, the latch segment 10 that engage clamp shaft 182 is biased, clamp shaft 182 has by the trend above carried, thus is pressed between inner flange 16 and tightening member 18 by operation element 17, reaches the object of clamping operation element.Now, clamp shaft 182 is in and is locked in the first latched position of block 10 locking.
Rotation status: when pulling spanner 2 to Fig. 2 a, Fig. 2 b state, because eccentric block 4 has a bit of facing directly, when spanner 2 arrives this position, feel is very strong, will not too easily continue to pull spanner.At this moment, inner flange 16 moves down, and makes inner flange 16 and axle 15 throw off engagement.Simultaneously, cannot radially roll because steel ball 11 is still against facing directly on 233 of pressure ring 23, so latch segment 10 still engages with clamp shaft 182, because the structure of engagement is cannelure, so inner flange 16 can be rotated, change the direction of the relative power tool 1 of operation element 17, realize the object of operation element angular adjustment.Now operation element 17 is still clamped between inner flange 16 and tightening member 18, clamp shaft 182 is in can not in the second latched position of latch segment 10 movement in the axial direction, and just tightening member 18, operation element 17, inner flange 16 and inner flange pipe 14 can around the axial rotation of axle 15.
Release conditions: when pulling spanner 2 to Fig. 3 a, Fig. 3 b state, depression bar 5 is depressed by eccentric block 4 to greatest extent, and depression bar 5 pushes ring 23, and pressure ring 23 pushing pin 12, it is descending that pin 12 pushes inner flange 16.In addition, because latch segment 10 lower end is now free, upper end is by stage clip 9 bias voltage, and last limited plate (not shown) is spacing.At this moment, pull down tightening member 18, the cannelure engaged due to clamp shaft 182 and latch segment 10 has inclined-plane, and hand is to the effect of clamp shaft 182 pulling force, and latch segment 10 footpath is moved up out, and tightening member 18 can be extracted, thus can take off operation element 17.Latch segment 10 can radially outward movement be because steel ball 11 has rolled into inclined-plane 232 place of pressure ring, has vacateed space for latch segment 10 moves radially.
In the present embodiment, the adaptive end face of axle 15 and inner flange 16 is respectively equipped with the groove 152 with constant slope and the boss 161 of mutually coupling, two parts can be made closely to engage, gapless, and along with the wearing and tearing of boss 161, still can compensate for clearance, closely cooperate.
Can be found out by Fig. 1 a, 1b and Fig. 4 a, during clamped condition, the boss 161 of inner flange 16 and the groove 152 of axle 15 engage completely.
Can be found out by Fig. 2 a, 2b and Fig. 4 b, the peak of inner flange 16 boss 161 is lower than the peak being formed at the boss between groove 152 in axle 15, namely inner flange 16 and axle 15 throw off engagement, can relatively rotate between the two, at this moment the clamp shaft 182 of tightening member 18, operation element 17 and inner flange 16 assembly is rotated, just can change the direction of the relative power tool 1 of operation element 17, realize the object of operation element angular adjustment.After rotating, then clamp, directly can oppositely pull spanner 2, can Automatic-clamping.Implementation is: even if the groove 152 on axle 15 end face do not aimed at completely by the boss 161 of inner flange 16, due to the particular design of boss 161, under the effect of big spring 13, the boss 161 of inner flange 16 still can slip in the groove 152 on axle 15 end face.
As shown in Figure 5, a little spring 21 is also provided with further in the above-described embodiment between pin 12 and inner flange 16, one end of little spring 21 withstands on pin 12, the other end withstands on the outstanding step that flanged pipe 14 is provided with, being provided with this little spring 21 can guarantee when clamped position, flanged pipe 14 upper end does not contact with pin 12, has living space and allows big spring 13 compress latch segment 10; When position of rotation, flanged pipe 14 upper end does not still contact with pin 12, promote flanged pipe 14 and inner flange 16 by small pressure spring 9 to move down and throw off with the boss of axle 15 end, ensure that inner flange 16 has certain pressure to push down operation element 17 simultaneously, just produce damping during rotation, operation element 17 can be parked in arbitrarily angled; When off-position, flanged pipe 14 upper end starts to contact with pin 12, when guaranteeing dress operation element 17, axially pressure operation element 17, inner flange 16 can not move, also just can not engage with axle 15 end face boss, when clamped position, inner flange 16 axial location is each all the same like this, guarantees that next time, the inner flange 16 when position of rotation can rotate freely.
Fig. 6 is the another kind of embodiment that power tool of the present invention can realize the swivel head of operation element transposition.
Structure same as the previously described embodiments and Reference numeral do not repeat, below in detail introduce three places different from above-described embodiment:
First place: operating assembly comprises cam spanner 2 ', shift fork 5 ', the eccentric face of cam spanner 2 ' is made up of multistage, rotating cam spanner 2 ', and the eccentric face of cam spanner 2 ' promotes shift fork 5 ' and rotates, and shift fork 5 ' promotes pressure ring 23 and moves.
Second place: the disengagement of promotion inner flange 16 is engaged with axle 15, the mode pushing away inner flange pipe 14 by pin 12 becomes the spring 27 bias voltage inner flange 16 promoted by pin 12 in stop collar 14 ' and stop collar, inner flange 16 is ejected, inner flange 16 is thrown off with axle 15 and engages.Wherein, spring 27 upper end limited cover 14 ' is spacing, and lower end is against on pad 28, and pad 28 is placed in the top of inner flange 16.In present embodiment, inner flange is ejected by spring, stop collar 14 ' rigid contact of getting along well when pin 12 is moved down, simultaneously, the effect of inner flange 16 flexible power always, therefore, when rotary work element 17, inner flange 16 has damping force, and operation element 17 can be parked in any one position, good hand touch.
3rd place: inner flange 16 is different with the engagement system of axle 15, composition graphs 6, the projection 161 ' of inner flange 16 is evenly distributed on upper surface, and projection is similar cylindrical shape, and there is the pit 152 ' holding inner flange projection axle 15 lower end, the projection of inner flange stretched in axle 15 pit, both realizations are engaged, and prevent from relatively rotating between the two.
Claims (9)
1. a power tool, comprises:
Drive the driving shaft of operation element;
Clamp the clamping mechanism of described operation element, described clamping mechanism has clamped position and off-position, and on described clamped position, the relatively described driving shaft of described operation element is fixed, on described off-position, described operation element can take off from described driving shaft; And
The manual operating parts of people can be supplied;
It is characterized in that: described power tool also comprises torsion drives structure, described driving shaft has a longitudinal axis, described operating parts drives described torsion drives structure to move along described longitudinal axis, make described torsion drives structure engage with described driving shaft or throw off to engage, described clamping mechanism also has position of rotation, on described position of rotation, described operation element can rotate an angle relative to described driving shaft, described operating parts has an operating position corresponding with described position of rotation, described clamping mechanism is at clamped position, described operation element is clamped, described torsion drives structure engages with described driving shaft, described clamping mechanism is at position of rotation, described operation element is clamped, described torsion drives structure is thrown off with described driving shaft and is engaged, described clamping mechanism is in off-position, described torsion drives structure is thrown off with described driving shaft and is engaged, described operation element can take off from described driving shaft.
2. power tool according to claim 1, is characterized in that: described operation element is driven by the mode of vibration relative to the longitudinal axis of described driving shaft.
3. power tool according to claim 1, it is characterized in that: described driving shaft comprises the mandrel segment being configured to hollow, described clamping mechanism comprises tightening member and latch assembly, described tightening member has the clamp shaft that can extend in described axle, and described clamp shaft can be locked in described axle by described latch assembly.
4. power tool according to claim 3, it is characterized in that: on described clamped position, described tightening member is locked by described latch assembly and is positioned in the first latched position, on described position of rotation, described tightening member is locked by described latch assembly and is positioned in the second latched position, on described off-position, described tightening member can get loose from described latch assembly.
5. power tool according to claim 4, it is characterized in that: described latch assembly comprises locking member, middleware and moving member, described middleware is engaged between described locking member and described moving member, described moving member is provided with recess and flat part, and described middleware selectively abuts with described recess or described flat part.
6. power tool according to claim 5, is characterized in that: in first, second latched position described, and described locking member is connected with shape closing component structure with the clamp shaft of described tightening member.
7. power tool according to claim 6, is characterized in that: described shape closing component structure comprises is located at the circumferential groove sealed for shape on described clamp shaft and described locking member or tooth.
8. the power tool according to any one of claim 3 to 7, it is characterized in that: described driving shaft is connected with can along the flange part of the axis direction movement of driving shaft, described flange part has first end and the second end, described first end and described driving shaft adaptation, described operation element can be clamped on described tightening member by described second end.
9. power tool according to claim 8, it is characterized in that: on described clamped position, the first end of described flange part can not relatively rotate with described driving shaft and be connected, and on described position of rotation, the first end of described flange part and the axle head of described driving shaft are thrown off.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110128114.0A CN102785162B (en) | 2011-05-18 | 2011-05-18 | Power tool |
| DE202012101783U DE202012101783U1 (en) | 2011-05-18 | 2012-05-15 | power tool |
| US13/471,599 US9174354B2 (en) | 2011-05-18 | 2012-05-15 | Power tool |
| GB1208668.2A GB2491032B (en) | 2011-05-18 | 2012-05-17 | Power tool |
| FR1254551A FR2975324B3 (en) | 2011-05-18 | 2012-05-18 | POWER TOOL |
| US14/927,680 US9764444B2 (en) | 2011-05-18 | 2015-10-30 | Power tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110128114.0A CN102785162B (en) | 2011-05-18 | 2011-05-18 | Power tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102785162A CN102785162A (en) | 2012-11-21 |
| CN102785162B true CN102785162B (en) | 2015-03-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110128114.0A Active CN102785162B (en) | 2011-05-18 | 2011-05-18 | Power tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102785162B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104070187B (en) * | 2013-03-27 | 2016-10-05 | 苏州宝时得电动工具有限公司 | A kind of main axle structure of oscillating machine |
| CN103317190B (en) * | 2013-06-20 | 2015-07-15 | 浙江通达电器有限公司 | Multifunctional saw chuck device of fast clamping saw blade |
| WO2015038889A1 (en) * | 2013-09-12 | 2015-03-19 | Robert Bosch Gmbh | Locking mechanism for an articulating oscillating power tool |
| DE102017214118A1 (en) * | 2017-08-11 | 2019-02-14 | Robert Bosch Gmbh | Quick-clamping device for a, in particular at least one rotatably driven output shaft having, portable machine tool, in particular angle grinder |
| JP7075300B2 (en) * | 2018-07-14 | 2022-05-25 | 株式会社マキタ | Work tools |
| CN112847259B (en) * | 2019-11-26 | 2022-12-06 | 苏州宝时得电动工具有限公司 | Power tool and clamping device thereof |
| JP7422538B2 (en) * | 2019-12-26 | 2024-01-26 | 株式会社マキタ | Work tools |
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| US20090023371A1 (en) * | 2007-07-19 | 2009-01-22 | Juergen Blickle | Power-Driven Hand Tool |
| DE202009001440U1 (en) * | 2009-01-30 | 2010-07-01 | C. & E. Fein Gmbh | Powered hand tool with clamping device for a tool |
| CN201736205U (en) * | 2010-07-12 | 2011-02-09 | 苏州宝时得电动工具有限公司 | Power tool |
| CN201736204U (en) * | 2010-07-12 | 2011-02-09 | 苏州宝时得电动工具有限公司 | Power tool |
| CN201824333U (en) * | 2010-10-09 | 2011-05-11 | 南京德朔实业有限公司 | Power tool provided with working component clamping device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7856724B2 (en) * | 2000-08-17 | 2010-12-28 | Hilti Aktiengesellschaft | Electrical power tool with a rotatable working tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090023371A1 (en) * | 2007-07-19 | 2009-01-22 | Juergen Blickle | Power-Driven Hand Tool |
| DE202009001440U1 (en) * | 2009-01-30 | 2010-07-01 | C. & E. Fein Gmbh | Powered hand tool with clamping device for a tool |
| CN201736205U (en) * | 2010-07-12 | 2011-02-09 | 苏州宝时得电动工具有限公司 | Power tool |
| CN201736204U (en) * | 2010-07-12 | 2011-02-09 | 苏州宝时得电动工具有限公司 | Power tool |
| CN201824333U (en) * | 2010-10-09 | 2011-05-11 | 南京德朔实业有限公司 | Power tool provided with working component clamping device |
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| Publication number | Publication date |
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| CN102785162A (en) | 2012-11-21 |
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Address after: 211106 No. 529, 159, Jiangjun Avenue, Jiangning District, Nanjing, Jiangsu Province Patentee after: Nanjing Quanfeng Technology Co.,Ltd. Address before: 211106, No. 159, general road, Jiangning economic and Technological Development Zone, Nanjing, Jiangsu Patentee before: NANJING CHERVON INDUSTRY Co.,Ltd. |