CN105751131A - Impact wrench - Google Patents
Impact wrench Download PDFInfo
- Publication number
- CN105751131A CN105751131A CN201410796155.0A CN201410796155A CN105751131A CN 105751131 A CN105751131 A CN 105751131A CN 201410796155 A CN201410796155 A CN 201410796155A CN 105751131 A CN105751131 A CN 105751131A
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- CN
- China
- Prior art keywords
- driving axle
- sleeve
- impact
- connector
- casting die
- 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
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 230000033001 locomotion Effects 0.000 claims abstract description 5
- 238000005266 casting Methods 0.000 claims description 35
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The invention discloses an impact wrench which comprises a main shaft, an impact block, a driving shaft and a sleeve; the impact wrench has an impact state and a rotation state, a pressing part which can move in the axial direction of the sleeve is further arranged in the sleeve, and movement of the pressing part to one side of the driving shaft disconnects rotation power transmission between the sleeve and the driving shaft. Compared with the prior art, the impact wrench can loosen a workpiece on a subject matter and can also intelligently control the workpiece to be unscrewed from the subject matter incompletely, the operation is convenient, the efficiency is high, and the impact wrench better meets the working habit of an operator.
Description
Technical field
The invention belongs to impact wrench technical field, particularly relate to a kind of can the impact wrench of autostop.
Background technology
Usually, the function of hand held electric tool such as impact wrench includes being screwed by nut etc. or unclamping.But, the workpiece such as nut are easily directly directly screwed off by existing impact wrench from subject matter, so, not only result in operation inconvenience (operator also needs to pick up the workpiece such as the nut screwed off, screw), it is also possible to can cause the loss of nut, screw.
Summary of the invention
It is desirable to provide a kind of impact wrench, impact wrench can be made from subject matter loosening to the degree that can manually take off by workpiece such as nuts, it is to avoid directly screw off.
Correspondingly, for solving above-mentioned technical problem, in an embodiment provided by the invention, a kind of impact wrench, including: fuselage；It is positioned at the motor of described fuselage；The main shaft driven by described motor；Impact block by described main shaft drives；The driving axle driven by described impact block；Connecting the sleeve of described driving axle, the Internal periphery of described sleeve and the outline of machined workpiece match；Described impact wrench has impact conditions and rotation status, under impact conditions, described impact block periodically impacts described driving axle in a rotational direction, under rotation status, described impact block drives described driving axle with described impact block synchronous rotary, being additionally provided with in described sleeve can along the casting die moved axially of sleeve, and described casting die transmits towards the rotary power between the described sleeve of mobile disconnection and the described driving axle of driving axle side.
Preferably, being provided with elastic component between described casting die and described sleeve, described elastic component orders about described casting die and moves towards away from the direction driving axle.
Preferably, rotary power between described sleeve and described driving axle is by a connector transmission, described connector has primary importance and the second position, set up the rotary power transmission between described sleeve and described driving axle at described primary importance connector, disconnect the rotary power transmission between described sleeve and described driving axle at connector described in the described second position；Described casting die makes described connector move to the described second position from described primary importance towards the movement driving axle side.
Preferably, described connector has the endoporus of flat shape, and described driving axle has the join first axial position with described interior hole shape, and departs from, with described endoporus, the second axial position connected；Endoporus at described primary importance connector is positioned at the described first axial position, and the endoporus at described second position connector is positioned at the described second axial position.
Preferably, described casting die and described connector connect as one.
Preferably, it is provided with through hole in the middle of described casting die.
Preferably, described casting die is towards, when driving axle one side shifting predeterminable range, disconnecting the rotary power transmission between described sleeve and described driving axle.
Preferably, described predeterminable range is 0.5 centimetre to 2 centimetres.
Relative to prior art, the impact wrench of the present invention both can loosen the workpiece on subject matter, can control again workpiece intelligently and not exclusively screw off from subject matter, and easy to operate, efficiency is higher, more meet operator's work habit.
Accompanying drawing explanation
Fig. 1 is the sleeve of the impact wrench of an embodiment of the present invention and drives axle to set up fragmentary perspective view when being rotatably connected.
Fig. 2 is the profile of the barrel forward end of the impact wrench shown in Fig. 1.
Fig. 3 is the profile that the connector of the impact wrench shown in Fig. 1 is in primary importance.
Fig. 4 is the sleeve of the impact wrench of Fig. 1 and drives axle to disconnect fragmentary perspective view when being rotatably connected.
Fig. 5 is the profile that the connector of the impact wrench shown in Fig. 4 is in the second position.
10, fuselage 11, motor
13, main shaft 15, impact block
17, stage clip 18, ball
19, axle 21, control circuit are driven
23, battery bag 25, sleeve
27, switch 31, casting die
33, elastic component 35, connector
37, the first axial position, axial position 39, second
Detailed description of the invention
Describe the present invention below with reference to detailed description of the invention shown in the drawings.But these embodiments are not limiting as the present invention, those of ordinary skill in the art is all contained in protection scope of the present invention according to the made structure of these embodiments, method or conversion functionally.
For convenience of describing, the word expressing position and direction described in the present invention, it is all using tool operator as reference, is near-end near one end of operator, the one end away from operator is far-end.
As shown in Figure 1, in first embodiment of the invention, described impact wrench includes: fuselage 10, the main shaft 13 be provided with motor 11 in described fuselage 10, being driven by motor 11, the impact block 15 driven by main shaft 13, the driving axle 19 that driven by impact block 15, and it is arranged on the sleeve 25 of fuselage 10 far-end.Outside driving axle 19 part to stretch out fuselage 10, it is arranged in sleeve 25, with workpiece such as nut processings.Driving axle 19 to have force side and force side, described force side receives the power that described impact block applies, and described force side applies active force to processed workpiece.Impact wrench also includes the electric-controlled parts such as switch 27, battery bag 23 and control circuit 21.
Similar with conventional impact wrench, in present embodiment, rotation-impact transfer structure it is provided with between main shaft 13 and impact block 15, specifically include one end and connect the stage clip 17 of impact block 15, one end connection main shaft 13, it is positioned at the outer V-shaped groove on main shaft 13 outer peripheral face, it is positioned at the V-shaped groove 16 on impact block 15 inner peripheral surface, is arranged in outer V-shaped groove and V-shaped groove to connect the ball 18 of main shaft 13 and impact block 15 simultaneously.nullBy above-mentioned configuration，Impact wrench has impact conditions，Under impact conditions, impact block 15 periodically impacts described driving axle 19 in a rotational direction，It is summarized as follows: under initial position，Mutually abutted by projection cube structure axially between impact block 15 and driving axle 19，When the workpiece such as nut that impact wrench is machined is tightened further or unclamps required moment of torsion more than preset value (namely stage clip is supplied to the moment of torsion of impact block)，Drive axle 19 wouldn't rotate and main shaft 13 is rotated by motor 11，The rotary impact transformational structure that rotates through of main shaft 13 is converted into impact block 15 moving axially to main shaft 13 side，In this moves axially, impact block 15 overcomes pressure spring force to move thus accumulating elastic potential energy，When impact block 15 axially separates back to its projection with the projection driving axle 19，The potential energy of stage clip 17 discharges and makes impact block 15 axial advancement simultaneously and rotate in a circumferential direction，Axle 19 is driven thus impacting in a rotational direction，After impact, impact block 15 and driving axle 19 are returned to again initial position，Impact next time.
It is also similarly to the impact wrench of routine, if impact wrench is in the work carrying out unclamping the workpiece such as nut, is then eventually switched to rotation status from impact conditions.It is to say, after nut unclamped by repeat impact, when the moment of torsion needed for subsequent rotation strongly reduces, impact block 15 no longer will can produce aforesaid accumulation of energy percussion action, and impact block 15 drives described driving axle 19 with described impact block 15 synchronous rotary.
As in figure 2 it is shown, the outline of the Internal periphery of aforesaid sleeve 25 and machined workpiece matches, in order to socket workpiece is also backed out.In the present embodiment, workpiece is hex nut, and therefore the Internal periphery of sleeve 25 is also hexagon.Sleeve 25 is connected with driving axle 19, and selectable can set up rotary power transmission, thus backing out workpiece under the driving driving axle 19 is dynamic, and disconnection rotary power transmits after workpiece unclamps, it is to avoid excessively rotational workpieces.
Concrete, seeing figures.1.and.2, in sleeve 25, be provided with the casting die 31 moved axially along sleeve 25, casting die 31 is towards driving the mobile disconnection sleeve 25 of axle 19 side and driving the rotary power transmission between axle 19.Why it is placed through casting die 31 to transmit towards the aforesaid rotary power of the mobile disconnection driving axle 19 side, what be because so can using workpiece itself moves axially as rotating the trigger condition disconnected, and workpiece itself creates and moves axially, just illustrate that workpiece is unscrewed, start to rotate along bolt structure to rise, also illustrate that impact wrench has been switched to rotation status from impact conditions.Such probability arranging false triggering is little, reliable and stable.
More specifically, being provided with elastic component 33 between casting die 31 and sleeve 25, this elastic component 33 orders about casting die 31 and moves towards away from the direction driving axle 19, say, that elastic component 33 orders about casting die 31 and abuts on workpiece.Elastic component 33 is the spring in the sleeve 25 arranged in the present embodiment, and the side of spring is installed on the diapire of sleeve 25, and opposite side is installed to the end of casting die 31.
In the present embodiment, the rotary power between sleeve 25 and described driving axle 19 is transmitted by a connector 35.Connector 35 has primary importance and the second position, sets up sleeve 25 at primary importance connector 35 and drives the rotary power transmission between axle 19, disconnects sleeve 25 at second position connector 35 and drives the rotary power transmission between axle 19.Casting die 31 makes connector 35 move to the second position from primary importance towards the movement driving axle 19 side.The centre of casting die 31 is provided with through hole, in order to hold the stud at workpiece nut place.
Casting die 31 orders about the mode that connector 35 moves can be had multiple, such as, being connected by lever between casting die 31 and connector 35, moving axially of casting die 31 makes connector 35 move radially at perpendicular, and then makes connector 31 from driving disengagement axle 19 thus disconnecting the transmission of aforesaid rotary power.And for example, casting die 31 is not directly connected to connector 35, but moving axially of casting die 31 triggers an electrical switch, and this electrical switch makes connector 35 move to the second position from primary importance, etc..
In the present embodiment shown in Fig. 1 and Fig. 4, casting die 31 and connector 35 are integrated, and are arranged in sleeve 25.Connector 35 has the endoporus of flat shape, drives axle 19 to have the join with described interior hole shape first axial position 37, and departs from, with endoporus, the second axial position 39 connected.As it is shown on figure 3, in primary importance, the endoporus of connector 35 is positioned at the first axial position 37 place, as it is shown in figure 5, the endoporus at second position connector 35 is positioned at the described second axial position 39 place.
By such setting, after impact wrench enters into rotation status, from the state of Fig. 3, casting die 31 is promoted by the ascending motion of nut, overcome the pressure of spring to driving axle 19 side to move axially, owing to connector 35 and driving axle 19 are one, connector 35 also and then to driving axle 19 to move, changes from primary importance to the second position.When primary importance, due to the endoporus flat shape of connector 35 with drive the matching form at the first axial position 37 of axle, therefore rotary power connects to remain and works at this moment, axle 19 is driven to be rotated by the first axial position 37 band follower link 35, connector 35 is embedded in the wall of sleeve 25, can band moving sleeve 25 synchronous axial system, thus continue drive workpiece rotate rise.The rotation of workpiece rises and continues to drive casting die 31, connector 35 to driving axle 19 to move, until connector 35 arrives the second position.In the second position, due to connector 35 and leave the first axial position 37, arrive the second axial position 39, and the maximum diameter width at the second axial position 39 is less than the most path width of endoporus, therefore it is disconnected the transmission of aforesaid rotary power at this position connector, connector 35 is followed by driving axle 19 to rotate, thus sleeve 25 also no longer rotates, ultimately result in workpiece nut and no longer rotate and also no longer rise.
In above-described embodiment, casting die is towards, when driving axle one side shifting predeterminable range, disconnecting the rotary power transmission between described sleeve and described driving axle, and this predeterminable range is 0.5 centimetre to 2 centimetres.
The present invention is by above-mentioned technological means, it is achieved that both can loosen the workpiece on subject matter, can control again workpiece intelligently and not exclusively screw off from subject matter, and easy to operate, efficiency is higher, more meet operator's work habit.
It is to be understood that, although this specification is been described by according to embodiment, but not each embodiment only comprises an independent technical scheme, this narrating mode of description is only for clarity sake, description should be made as a whole by those skilled in the art, technical scheme in each embodiment through appropriately combined, can also form other embodiments that it will be appreciated by those skilled in the art that.
The a series of detailed description of those listed above is only for illustrating of the feasibility embodiment of the present invention; they also are not used to limit the scope of the invention, and all should be included within protection scope of the present invention without departing from the skill of the present invention equivalent implementations made of spirit or change.
Claims (8)
1. an impact wrench, including: fuselage；It is positioned at the motor of described fuselage；The main shaft driven by described motor；Impact block by described main shaft drives；The driving axle driven by described impact block；Connecting the sleeve of described driving axle, the Internal periphery of described sleeve and the outline of machined workpiece match；Described impact wrench has impact conditions and rotation status, under impact conditions, described impact block periodically impacts described driving axle in a rotational direction, under rotation status, described impact block drives described driving axle with described impact block synchronous rotary, it is characterized in that, being additionally provided with in described sleeve can along the casting die moved axially of sleeve, and described casting die transmits towards the rotary power between the described sleeve of mobile disconnection and the described driving axle of driving axle side.
2. impact wrench according to claim 1, it is characterised in that be provided with elastic component between described casting die and described sleeve, described elastic component orders about described casting die and moves towards away from the direction driving axle.
3. impact wrench according to claim 1, it is characterized in that, rotary power between described sleeve and described driving axle is by a connector transmission, described connector has primary importance and the second position, set up the rotary power transmission between described sleeve and described driving axle at described primary importance connector, disconnect the rotary power transmission between described sleeve and described driving axle at connector described in the described second position；Described casting die makes described connector move to the described second position from described primary importance towards the movement driving axle side.
4. impact wrench according to claim 3, it is characterised in that described connector has the endoporus of flat shape, described driving axle has the join first axial position with described interior hole shape, and departs from, with described endoporus, the second axial position connected；Endoporus at described primary importance connector is positioned at the described first axial position, and the endoporus at described second position connector is positioned at the described second axial position.
5. impact wrench according to claim 3, it is characterised in that described casting die and described connector connect as one.
6. impact wrench according to claim 1, it is characterised in that be provided with through hole in the middle of described casting die.
7. impact wrench according to claim 1, it is characterised in that described casting die is towards, when driving axle one side shifting predeterminable range, disconnecting the rotary power transmission between described sleeve and described driving axle.
8. impact wrench according to claim 7, it is characterised in that described predeterminable range is 0.5 centimetre to 2 centimetres.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410796155.0A CN105751131A (en) | 2014-12-18 | 2014-12-18 | Impact wrench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410796155.0A CN105751131A (en) | 2014-12-18 | 2014-12-18 | Impact wrench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105751131A true CN105751131A (en) | 2016-07-13 |
Family
ID=56340808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410796155.0A Pending CN105751131A (en) | 2014-12-18 | 2014-12-18 | Impact wrench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105751131A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4653358A (en) * | 1985-04-18 | 1987-03-31 | Julien Jean Louis Lankry | Tools for use in tightening or removing screw-threaded fasteners |
| DE3912991A1 (en) * | 1989-04-20 | 1990-10-31 | Proxxon Werkzeug Gmbh | Electric hand drill or screwdriver - has stop switch for automatic cut=out motor at required penetration depth |
| US5457866A (en) * | 1993-04-21 | 1995-10-17 | Kabushiki Kaisha Yamazaki Haguruma Seisakusho | Bolt-tightening method using an impact wrench |
| US20020134172A1 (en) * | 1999-03-16 | 2002-09-26 | Masakazu Yamada | Reading method of crew rotation angle of hand-held impact wrench, hand-vibration detection method, tightening evaluation and control method of hand-held power screw loosening tool |
| CN202278564U (en) * | 2010-01-07 | 2012-06-20 | 布莱克和戴克公司 | Spiral transmission tool for driver tool with removable contact disengaging component |
| CN103862417A (en) * | 2012-12-13 | 2014-06-18 | 苏州宝时得电动工具有限公司 | Impact wrench |
-
2014
- 2014-12-18 CN CN201410796155.0A patent/CN105751131A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4653358A (en) * | 1985-04-18 | 1987-03-31 | Julien Jean Louis Lankry | Tools for use in tightening or removing screw-threaded fasteners |
| DE3912991A1 (en) * | 1989-04-20 | 1990-10-31 | Proxxon Werkzeug Gmbh | Electric hand drill or screwdriver - has stop switch for automatic cut=out motor at required penetration depth |
| US5457866A (en) * | 1993-04-21 | 1995-10-17 | Kabushiki Kaisha Yamazaki Haguruma Seisakusho | Bolt-tightening method using an impact wrench |
| US20020134172A1 (en) * | 1999-03-16 | 2002-09-26 | Masakazu Yamada | Reading method of crew rotation angle of hand-held impact wrench, hand-vibration detection method, tightening evaluation and control method of hand-held power screw loosening tool |
| CN202278564U (en) * | 2010-01-07 | 2012-06-20 | 布莱克和戴克公司 | Spiral transmission tool for driver tool with removable contact disengaging component |
| CN103862417A (en) * | 2012-12-13 | 2014-06-18 | 苏州宝时得电动工具有限公司 | Impact wrench |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160713 |