CN106166723A - The switchable electric wrench of function - Google Patents
The switchable electric wrench of function Download PDFInfo
- Publication number
- CN106166723A CN106166723A CN201610683377.0A CN201610683377A CN106166723A CN 106166723 A CN106166723 A CN 106166723A CN 201610683377 A CN201610683377 A CN 201610683377A CN 106166723 A CN106166723 A CN 106166723A
- Authority
- CN
- China
- Prior art keywords
- regulation set
- impact
- regulation
- function
- electric wrench
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
- B25B21/02—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose with means for imparting impact to screwdriver blade or nut socket
- B25B21/026—Impact clutches
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The present invention relates to a kind of switchable electric wrench of function, including housing, drive motor, gear reduction, output shaft, impact block, first spring and working shaft, the present invention is also provided with the first regulation set being moved rearwards by under the driving of impact block on rear side of impact block, it is provided with positioned opposite with the first regulation set at the first regulation set rear and the second regulation set that the first regulation set is moved rearwards by can be limited, when needs impact function, the first regulation set and the second regulation set interval is kept to arrange, impact block can normally be moved rearwards by and selectable and on working shaft passive impact portion is disengaged from；When need not impact function, make closely to offset between the first regulation set and the second regulation set, limit the first regulation set to be moved rearwards by, and then restriction impact block is moved rearwards by, now, passive impact portion on active impact portion on impact block and working shaft remains engagement so that electric wrench only has and screws function and do not have impact function, and the present invention is easy to operate.
Description
Technical field
The present invention relates to electric impact wrench technical field, refer specifically to a kind of switchable electric wrench of function.
Background technology
Electric impact wrench is by being applied to the installation as output shaft using produced for the hammer being driven in rotation impulsive force
Seat thus tight a bolt or nut.Existing electric impact wrench generally comprises driving motor, gear reduction and impact dress
Putting, this percussion mechanism includes that rotated the active impact block driven engages with actively impact block by the output shaft of gear reduction
Passive impact block and be connected to passive impact block and the working shaft being rotated by passive impact block, actively impact block is in work
Make selectively to be disengaged from passive impact block and disengage when the load suffered by axle increases to particular value, thus in direction of rotation
On working shaft imposed intermittent impact.
Application publication number be CN102458772A Chinese invention patent application " impact wrench " (application number:
CN200980159697.4) disclosing a kind of structure, it is provided with core maintaining body, and this core maintaining body can make the rotation of secondary hammer
The state holding pair hammer that shaft axis is consistent with the axis of main shaft, prevents core oscillating motion, thus is maintaining rotary impact power
While relax the vibration on axis direction.But, due to existing similar impact wrench structural impact function and spinfunction
Existing, during i.e. using, electric wrench has impact function all the time, and this spanner is only suitable for using as nutting simultaneously, and
Cannot function as electric screwdriver to use, because when electric screwdriver uses, as quick-fried in there being impact function easily to be twisted by screw all the time.
Therefore it provides a kind of structure that the impact function presence or absence of electric wrench switches over can being seemed particularly must
Want, and prior art disclose only the structure being adjusted the impulsive torque of electric wrench, and have no and can pull electronic
The structure that the impact function presence or absence of hands switches over, the most existing electric wrench cannot function as electric screwdriver and uses.
Summary of the invention
The technical problem to be solved is the present situation for prior art, it is provided that a kind of simple and reasonable, behaviour
Making the switchable electric wrench of convenient function, this electric wrench can realize switching over the presence or absence of impact function.
The present invention solves the technical scheme that above-mentioned technical problem used: a kind of switchable electric wrench of function, including
Housing；Drive motor, be located in described housing；Output shaft, in being located at described housing and by driving motor to be rotated；Impact
Block, can move forward and backward is located on described output shaft and can rotate with the rotation of output shaft, and the front end face of this impact block sets
It is equipped with active impact portion protruding forward；Impact spring, is located on rear side of described impact block and makes this impact block to remain forward
The trend of movement；Working shaft, can rotate is located on front side of described housing, and the rear end of this working shaft is provided with and can rush with described active
Match the passive impact portion clashed in the portion of hitting；It is characterized in that: also include the first regulation set, constrain in housing and be only capable of along shell
Body axial slip, this first regulation is overlapped and is also moved back by under the driving being positioned on rear side of described impact block and can move after impact block stress
Dynamic；And second regulation set, can circumferentially rotate is located in housing, this second regulation set be positioned at described first regulation set rear also
Coordinate with the first regulation set, decide whether that limiting the first regulation set is moved rearwards by by the rotational of the second regulation set.
As improving further, the rear end of described first regulation set is formed with the most spaced apart multiple first tooth
Portion, corresponding, the front end of the second regulation set has the second teeth portion being meshed with the first teeth portion.Preferably, described first teeth portion
End face and the end face of the second teeth portion to should be shaped to the plane that can abut, plane contact can make the second regulation set more preferably top
Live the first regulation set, prevent both from the most relatively deflecting, between adjacent two first teeth portion, be formed for the second teeth portion card
The first teeth groove entered, is formed for the second teeth groove that the first teeth portion snaps in, the side of the first teeth groove between adjacent two second teeth portion
Being formed separately the inclined-plane for gradually extending out to respective planes from bottom with the side of the second teeth groove, this can more ease rotation second
Regulation set.
Use said structure, when rotating the first teeth portion plane and the second regulation set that the second regulation set makes the first regulation put
On the second teeth portion plane when aligning, the first regulation is enclosed within the restriction that the second set is overcome difficulties and cannot be moved rearwards by, and then limits
Impact block is moved rearwards by, and the passive impact portion on such working shaft just remains with the active impact portion on impact block and engage
And make electric wrench only have and screw function and not there is impact function；Make the first regulation put first is overlapped when rotating the second regulation
During the second teeth portion mutual dislocation that teeth portion puts with the second regulation, the i.e. first teeth portion corresponds to the gap between the second teeth portion, this
Sample impact block is when the load suffered by working shaft increases to particular value, and impact block compresses the first spring and is moved rearwards by so that impacting
Active impact portion on block is disengaged from state with the passive impact portion on working shaft, and impact block promotes the first regulation set to be moved back by
Dynamic, when the first regulation set is moved rearwards by, the first teeth portion engages with the second teeth portion, and impact block is protected under the elastic force of the first spring
Hold and move forward, so that the electric wrench under this state has impact function.
Preferably, the inner peripheral surface of described housing offers the axial arranged limit sliding chutes along output shaft, correspondence, described
Having the spacing block set corresponding with limit sliding chutes on the periphery wall of the first regulation set, the length of this spacing block set is less than spacing cunning
The length of groove, above-mentioned spacing block set and limit sliding chutes collectively form permission the first regulation set and move forward and backward and limit the first regulation set
The limiting section circumferentially rotated.Use said structure, owing to the length of spacing block set is less than the length of limit sliding chutes, such that it is able to permit
Being permitted the first regulation, to be enclosed within enclosure interior movable and limit the first regulation and be enclosed within housing inner circumferential and rotate.
In above-mentioned each preferred version, described electric wrench also includes a shifting part, and the bottom of this shifting part arranges oriented
The inserting column of lower extension, corresponding, described second regulation puts and has for this inserting column plant spacing hole therein.Use this group
Slider configuration, it is simple to the turned position of the second stop collar is adjusted.
Preferably, described shifting part is shaped to the arc shape agreed with mutually with the first regulation set, the second regulation set outer peripheral face, institute
The top stating shifting part has upwardly extending toggle, and the surface of described housing has the regulation elongated hole exposed for toggle, this tune
The length of joint elongated hole is the most identical with the length of the second teeth portion or the second teeth groove.Use such structure, if shifting part is positioned at
The first teeth portion that regulation elongated hole one end and the first regulation put can be in can nibble with the second teeth portion that the second regulation puts just
When closing position, then when shifting part dials to regulate the elongated hole other end, first the first teeth portion of putting of regulation just can be with the
The second teeth portion that two regulations put offsets, thus prevents the first regulation set to be moved rearwards by.
Improving further, described electric wrench also includes the second bullet that the first regulation set can be made to remain the trend of moving forward
Spring.Due to the first regulation set in the present invention be provided without close-fitting between impact block and be connected, when electric wrench use impact function,
If the first regulation is enclosed within the motive force resetted the most forward after being moved rearwards by, then the first regulation set in continuous impact process
Meeting produces bigger noise with the structure multiple impact of front and back side, also can produce bigger abrasion, and use said structure, and first
Regulation is enclosed within the movement locus following impact block under the driving of the second spring all the time closely, can avoid between the first regulation set and impact block
The generation of noise, reduces abrasion.
In order in making electric wrench, each parts coordinate closely, the trailing flank of described first regulation set offers one circumferentially disposed
The first groove, the front end of described second spring is placed in this first groove and offsets with bottom land, after described second spring
The front end face with gear reduction is held to offset.Second arranged around through hole periphery is had recessed on the rear end face of described impact block
Groove, in the front end of described first spring is placed in this second groove and offsets with bottom land, and the rear portion of described output shaft had along week
To the boss arranged, the described rear end of the first spring offsets with the front end face of this boss.
In above-mentioned each scheme, the through hole that the middle part of described impact block is through before and after having, the front end of described output shaft is certainly
After advance through this through hole and be exposed to the front end of impact block, corresponding, the rear end of described working shaft has the front end for output shaft
The jack inserted.
Compared with prior art, it is an advantage of the current invention that: the present invention makes electricity by arranging the structure of an advantages of simple
The presence or absence of impact function can be switched over by spanner, concrete, and the present invention is provided with on rear side of impact block can be at impact block
Driving under the first regulation set of being moved rearwards by, be simultaneously provided with positioned opposite also with the first regulation set at the first regulation set rear
The second regulation set that the first regulation set is moved rearwards by can be limited, when electric wrench needs to use impact function, i.e. as electric wrench
When nutting uses, keeping the first regulation set and the second regulation set interval to arrange, impact block can normally be moved rearwards by thus optional
That select it is disengaged from passive impact portion on working shaft；When need not use impact function, i.e. twist as electric screwdriver
When screw uses, the position between regulation the first regulation set and the second regulation set, make the two closely offset, limit the first regulation set
It is moved rearwards by, and then restriction impact block is moved rearwards by, now, the active impact portion on impact block and the passive impact on working shaft
Portion remains that contact condition cannot depart from so that electric wrench only has and screws function and do not have impact function, so exists
The end of working shaft plugs cutter work head of tightening up a screw and just can use as electric screwdriver, and the present invention is easy to operate, for user
Provide great convenience, serve the effect of one-object-many-purposes.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention；
Fig. 2 is the status architecture schematic diagram (hiding housing) that the embodiment of the present invention does not possess impact function；
Fig. 3 is the status architecture schematic diagram (hiding housing) that the embodiment of the present invention possesses impact function；
Fig. 4 is the sectional view of Fig. 1；
Fig. 5 is the first regulation set in the embodiment of the present invention, the second regulation set, shifting part fit structure schematic diagram；
Fig. 6 is the structural representation of the first regulation set in Fig. 5；
Fig. 7 is the structural representation of the second regulation set in Fig. 5.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
As shown in Fig. 1～7, the switchable electric wrench of the present embodiment function includes housing 1, drives motor 2, gear reduction unit
Structure 3, output shaft 4, impact block the 5, first spring 6, working shaft 7, first regulate set 8, second and regulate set 9, shifting part 10 and second
Spring 11.
Housing is all located at by the driving motor 2 of the present embodiment, gear reduction 3, output shaft 4, impact block the 5, first spring 6
In 1, the driving motor 2 of the present embodiment is a motor, and the input of this motor is connected with power supply, the outfan of this motor and gear
The input of reducing gear 3 connects, and the outfan of gear reduction 3 is connected with the input of output shaft 4.Before impact block 5 energy
Being located on output shaft 4 and rotating with the rotation of output shaft 4 of rear movement, the front end face of this impact block 5 is provided with forward
Protruding active impact portion 51；What working shaft 7 can rotate is located on front side of housing 1, and the rear end of this working shaft 7 is provided with can be with impact
Active impact portion 51 on block 5 match clash into passive impact portion 71；Concrete, the middle part of impact block 5 is through before and after having
Through hole 52, the front end of output shaft 4 is exposed to the front end of impact block 5 through this through hole 52 from back to front, corresponding, working shaft 7
Rear end have for output shaft 4 front end insert jack 72.First spring 6 is located on rear side of impact block 5 and makes this impact block 5 to begin
Keep the trend moved forward eventually, the rear end face of impact block 5 has around through hole 52 periphery arrange the second groove 53, first
In the front end of spring 6 is placed in this second groove 53 and offseting with bottom land, the rear portion of output shaft 4 has boss circumferentially
41, the rear end of the first spring 6 offsets with the front end face of this boss 41.
In the present embodiment, first regulates in set 8 constrains in housing 1 and is only capable of along housing axial slip, this first regulation
Set 8 is positioned on rear side of impact block 5 and is also moved rearwards by under the driving that can move after impact block 5 stress；Second regulation set 9 can circumference turn
Dynamic is located in housing 1, and this second regulation set 9 is positioned at the first regulation and overlaps 8 rears and coordinate, by second with the first regulation set 8
The rotational of regulation set 9 decides whether that limiting the first regulation set 8 is moved rearwards by.Concrete, the rear end of the first regulation set 8 is formed with
Spaced apart first teeth portion 81, corresponding, the front end of the second regulation set 9 has the second tooth being meshed with the first teeth portion 81
Portion 91.The end face 811 of the first teeth portion 81 and the end face 911 of the second teeth portion 91 are to should be shaped to the plane that can abut, adjacent
It is formed for the first teeth groove 812 that the second teeth portion 91 snaps between two first teeth portion 81, is formed between adjacent two second teeth portion 91
There are the second teeth groove 912 snapped in for the first teeth portion 81, the side 813 of the first teeth groove 812 and the side 913 points of the second teeth groove 912
It is not configured to the inclined-plane gradually extended out from bottom to corresponding end face 811,911.
It is provided with on housing 1 inwall and allows the first regulation set 8 movable and limit the limit that the first regulation set 8 circumferentially rotates
Position portion, to prevent electric wrench duty under non-artificial mode of operation from changing.Concrete, the inner peripheral surface of housing 1 is offered
There is the axial arranged limit sliding chutes 12 along output shaft 4, correspondence, the periphery wall of the first regulation set 8 has and limit sliding chutes
12 corresponding spacing block sets 82, the length of this spacing block set 82 less than the length of limit sliding chutes 12, above-mentioned spacing block set 82 with
Limit sliding chutes 12 collectively forms limiting section, owing to the length of spacing block set 82 is less than the length of limit sliding chutes 12, such that it is able to permit
Permitted the first regulation set 8 to move forward and backward inside housing 1 and limit the first regulation set 8 and rotate in housing 1 inner circumferential.
The shifting part 10 of the present embodiment is shaped to regulate, with the first regulation set 8, second, the arc that set 9 outer peripheral faces agree with mutually
Shape, the bottom of shifting part 10 is provided with the inserting column 101 downwardly extended, correspondence, and the second regulation set 9 has for this inserting column
101 plant spacing holes 92 therein；The top of shifting part 10 has upwardly extending toggle 102, and the surface of housing 1 has for dialling
The regulation elongated hole 13 that button exposes, the length of this regulation elongated hole 13 is the most identical with the length of the second teeth portion 91 or the second teeth groove 912,
Just can be with the second regulation set if shifting part 10 is positioned at the first teeth portion 81 on regulation elongated hole 13 one end and the first regulation set 8
When the second teeth portion 91 on 9 is in the energy position of engagement, then when shifting part 10 dials to regulate elongated hole 13 other end, first adjusts
On joint set 8, the end face 811 of the first teeth portion 81 just can offset with the end face 911 of the second teeth portion 91 on the second regulation set 9, thus anti-
Only the first regulation set 8 is moved rearwards by.
As shown in Figure 4, the second spring 11 can make the first regulation set 8 remain the trend moved forward.Concrete, first
Offering a first circumferentially disposed groove 83 on the trailing flank of regulation set 8, it is first recessed that the front end of the second spring 11 is placed in this
In groove 83 and offseting with bottom land, the rear end of the second spring 11 offsets with the front end face of gear reduction 3.Due to the present embodiment
It is provided without close-fitting between first regulation set 8 and impact block 5 to be connected, when electric wrench uses impact function, if the first regulation set 8
The motive force resetted the most forward after being moved rearwards by, then the first regulation set 8 can be with front and back side in continuous impact process
Structure multiple impact produces bigger noise, also can produce bigger abrasion, and use said structure, and the first regulation set 8 is the
All the time follow the movement locus of impact block 5 under the driving of two springs 11 closely, noise between the first regulation set 8 and impact block 5 can be avoided
Generation, reduce abrasion.
Use the electric wrench of the present embodiment, when electric wrench need not use impact function, i.e. twist as electric screwdriver
When screw uses, promote shifting part 10 to make the second regulation set 9 rotate, make the first regulation overlap the top of the first teeth portion 81 on 8
Face 811 aligns with the end face 911 of the second teeth portion 91 on the second regulation set 9, and now, the first regulation set 8 overcomes difficulties 9 at the second set
Restriction under cannot be moved rearwards by, and then limit impact block 5 and be moved rearwards by, the passive impact portion 71 on such working shaft 7 is just
Remain with the active impact portion 51 on impact block 5 and contact and make electric wrench only have and screw function and not there is ballistic work
Energy, the so end at working shaft plug cutter work head of tightening up a screw and just can use as electric screwdriver；When electric wrench needs to adopt
When using impact function, when i.e. using as electric wrench nutting, shifting part 10 is promoted to make the first teeth portion 81 on the first regulation set 8
When overlapping the second teeth portion 91 mutual dislocation on 9 with the second regulation, the i.e. first teeth portion 81 corresponds to the gap between the second teeth portion 91,
So impact block 5 is when the load suffered by working shaft 7 increases to particular value, impact block 5 compress the first spring 6 be moved rearwards by thus
Making active impact portion on impact block 5 51 and passive impact portion 71 separating contacting state on working shaft 7, impact block 5 promotes the
One regulation set 8 is moved rearwards by, and when the first regulation set 8 is moved rearwards by, the first teeth portion 82 engages with the second teeth portion 91, and at the first bullet
Under the elastic force of spring 6, impact block 5 keeps again moving forward, so that the electric wrench under this state has impact function.
Claims (10)
1. the switchable electric wrench of function, including
Housing (1)；
Drive motor (2), be located in described housing (1)；
Output shaft (4), in being located at described housing (1) and by driving motor (2) to be rotated；
Impact block (5), can move forward and backward is located on described output shaft (4) and can rotate, this punching with the rotation of output shaft (4)
Hit and on the front end face of block (5), be provided with active impact portion (51) protruding forward；
Impact spring (6), is located at described impact block (5) rear side and makes this impact block (5) remain the trend moved forward；
Working shaft (7), can rotate is located at described housing (1) front side, and the rear end of this working shaft (7) is provided with can be with described active
Impact portion (51) match clash into passive impact portion (71)；
It is characterized in that: also include
First regulation set (8), constrains in housing (1) and is only capable of along housing axial slip, and this first regulation set (8) is positioned at described
Also it is moved rearwards by under impact block (5) rear side the driving that can move after impact block (5) stress；And
Second regulation set (9), can circumferentially rotate is located in housing (1), and this second regulation set (9) is positioned at described first regulation set
(8) rear and with first regulation set (8) coordinates, by second regulation overlap (9) rotational decide whether to limit the first regulation set
(8) it is moved rearwards by.
The switchable electric wrench of function the most according to claim 1, it is characterised in that: after described first regulation set (8)
End is formed with the most spaced apart multiple first teeth portion (81), correspondence, and the front end of described second regulation set (9) has energy
The second teeth portion (91) being meshed with the first teeth portion (81).
The switchable electric wrench of function the most according to claim 2, it is characterised in that: the end face of described first teeth portion (81)
(811) and the end face (911) of the second teeth portion (91) is to should be shaped to the plane that can abut, adjacent two first teeth portion (81) it
Between be formed for the first teeth groove (812) that the second teeth portion (91) snaps in, be formed for first between adjacent two second teeth portion (91)
The second teeth groove (912) that teeth portion (81) snaps in, the side (813) of described first teeth groove (812) and the side of the second teeth groove (912)
(913) it is formed separately the inclined-plane for gradually extending out to corresponding end face from bottom.
The switchable electric wrench of function the most according to claim 1, it is characterised in that: the inner peripheral surface of described housing (1) is opened
It is provided with the axial arranged limit sliding chutes (12) along output shaft (4), correspondence, the periphery wall of described first regulation set (8) has
Having the spacing block set (82) corresponding with limit sliding chutes (12), the length of this spacing block set (82) is less than the length of limit sliding chutes (12)
Degree, above-mentioned spacing block set (82) and limit sliding chutes (12) collectively form and allow the first regulation set (8) movable and limit first
The limiting section that regulation set circumferentially rotates.
The switchable electric wrench of function the most according to claim 1, it is characterised in that: also include a shifting part (10), should
The bottom of shifting part (10) is provided with the inserting column (101) downwardly extended, correspondence, and described second regulation set (9) has confession
This inserting column (101) is planted spacing hole therein (92).
The switchable electric wrench of function the most according to claim 5, it is characterised in that: described shifting part (10) be shaped to
The arc shape that first regulation set (8), second regulation set (9) outer peripheral face agree with mutually, the top of described shifting part (10) has upwards
The toggle (102) extended, the surface of described housing (1) has the regulation elongated hole (13) exposed for toggle (102), this regulation elongated hole
(13) length is the most identical with the length of the second teeth portion (91) or the second teeth groove (912).
The switchable electric wrench of function the most according to claim 1, it is characterised in that: also include making the first regulation set
(8) the support spring (11) of the trend of moving forward is remained.
The switchable electric wrench of function the most according to claim 7, it is characterised in that: after described first regulation set (8)
Offering circumferentially disposed first groove (83) on side, the front end of described support spring (11) is placed in this first groove
(83) in and offseting with bottom land, the rear end of described support spring (11) offsets with the front end face of gear reduction (3).
9. according to the switchable electric wrench of function described in any claim in claim 1～8, it is characterised in that: described
The through hole (52) that the middle part of impact block (5) is through before and after having, the front end of described output shaft (4) is from back to front through this through hole
(52) being exposed to the front end of impact block (5), correspondence, the rear end of described working shaft (7) has the front end for output shaft (4) and inserts
Jack (72).
The switchable electric wrench of function the most according to claim 9, it is characterised in that: the rear end face of described impact block (5)
On have the second groove (53) arranged around through hole (52) periphery, it is second recessed that the front end of described first spring (6) is placed in this
In groove (53) and offseting with bottom land, the rear portion of described output shaft (4) has boss (41) circumferentially, described first spring
(6) rear end offsets with the front end face of this boss (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610683377.0A CN106166723A (en) | 2016-08-17 | 2016-08-17 | The switchable electric wrench of function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610683377.0A CN106166723A (en) | 2016-08-17 | 2016-08-17 | The switchable electric wrench of function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106166723A true CN106166723A (en) | 2016-11-30 |
Family
ID=57375838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610683377.0A Pending CN106166723A (en) | 2016-08-17 | 2016-08-17 | The switchable electric wrench of function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106166723A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1836847A (en) * | 2005-03-24 | 2006-09-27 | 创科实业有限公司 | Combination drill |
| CN1943994A (en) * | 2005-09-13 | 2007-04-11 | 创科实业有限公司 | Impact rotary tool with drill mode |
| US20130306341A1 (en) * | 2008-09-25 | 2013-11-21 | Black & Decker Inc. | Hybrid impact tool |
| CN104114331A (en) * | 2012-03-30 | 2014-10-22 | 日立工机株式会社 | Power tool |
| CN205968799U (en) * | 2016-08-17 | 2017-02-22 | 宁波良业电器有限公司 | Changeable electric spanner of function |
-
2016
- 2016-08-17 CN CN201610683377.0A patent/CN106166723A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1836847A (en) * | 2005-03-24 | 2006-09-27 | 创科实业有限公司 | Combination drill |
| CN1943994A (en) * | 2005-09-13 | 2007-04-11 | 创科实业有限公司 | Impact rotary tool with drill mode |
| US20130306341A1 (en) * | 2008-09-25 | 2013-11-21 | Black & Decker Inc. | Hybrid impact tool |
| CN104114331A (en) * | 2012-03-30 | 2014-10-22 | 日立工机株式会社 | Power tool |
| CN205968799U (en) * | 2016-08-17 | 2017-02-22 | 宁波良业电器有限公司 | Changeable electric spanner of function |
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Application publication date: 20161130 |