CN105751134A - Impact wrench - Google Patents
Impact wrench Download PDFInfo
- Publication number
- CN105751134A CN105751134A CN201410798118.3A CN201410798118A CN105751134A CN 105751134 A CN105751134 A CN 105751134A CN 201410798118 A CN201410798118 A CN 201410798118A CN 105751134 A CN105751134 A CN 105751134A
- Authority
- CN
- China
- Prior art keywords
- axle
- impact
- driving axle
- impact block
- rotating shaft
- 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
Landscapes
- 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 and a driving shaft, and a force bearing end and a force applying end are arranged on the driving shaft; the impact wrench has an impact state and a rotation state, the impact wrench further comprises a rotation and axial movement conversion structure which is arranged between a machine body and the driving shaft, and the rotation and axial movement conversion structure converts rotation of the driving shaft into at least part of axial movement of the driving shaft, so that at least part of the driving shaft is disconnected with the impact block.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, described driving axle has force side and force side, and described force side receives the power that described impact block applies, and described force side applies active force to processed workpiece；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, also include being arranged in fuselage and driving the rotating shaft between axle to move transformational structure, it is drive at least part of of axle to move axially that described rotating shaft moves transformational structure by the translating rotation of driving axle, so that driving the connection disconnected at least partly with described impact block of axle.
Preferably, described rotating shaft move transformational structure include relative to the female thread of fuselage fixed and arranged and and what described female thread matched, be positioned at and drive the external screw thread of axle outer surface or pin.
Preferably, described rotating shaft moves transformational structure and includes the match skewed slot arranged and slide block, and one of them of described skewed slot and slide block is relative to fuselage fixed and arranged, and wherein another is arranged on described driving axle.
Preferably, described driving axle is integral type structure, it is drive moving axially of axle entirety that described rotating shaft moves transformational structure by the translating rotation driving axle, and what described driving axle was overall moves axially so that force side departs from described impact block, so that driving axle entirety to disconnect the connection with described impact block.
Preferably, described driving axle is split-type structural, including the Part I connected with interfixing in a rotational direction and Part II, described force side is positioned at Part I, described force side is positioned at Part II, described rotating shaft moves transformational structure moving axially the Part II that translating rotation is driving axle of driving axle, and moving axially so that Part II departs from described Part I of described Part II, so that driving the Part II of axle to disconnect the connection with described impact block.
Preferably, described Part I and Part II are connected by fluted disc structure with interfixing in a rotational direction.
Preferably, described Part I and Part II are connected by flat structure with interfixing in a rotational direction.
Preferably, described rotating shaft moves transformational structure and is configured to when driving axle to rotate predetermined amount, drives disconnecting at least partly and the connection of described impact block of axle, described predetermined amount range for 1/4 to 3.
Preferably, described rotating shaft move transformational structure be configured to when drive axle at least part of move axially predeterminable range time, drive disconnecting at least partly and the connection of described impact block of axle, described predeterminable range range for 1 millimeter 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 fragmentary perspective view when driving axle and impact block to connect of the impact wrench of an embodiment of the present invention.
Fig. 2 is fragmentary perspective view when driving axle and impact block to disconnect of the impact wrench of an embodiment of the present invention.
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, screw-casing
33, pin
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.
Impact wrench also includes being arranged in fuselage 10 and driving the rotating shaft between axle 19 to move transformational structure.It is drive at least part of of axle 19 to move axially that rotating shaft moves transformational structure by the translating rotation of driving axle 19, so that driving the connection disconnected at least partly with described impact block 15 of axle 19.
In the present embodiment, rotating shaft move transformational structure include relative to fuselage 10 fixed and arranged female thread and and what aforementioned female thread matched, be positioned at drive axle 19 outer surface pin.Concrete, rotating shaft moves the screw-casing 31 that transformational structure includes being fixedly connected on fuselage 10, and aforesaid female thread is arranged on the inner surface of screw-casing 31；The outer surface cloth driving axle 19 is equipped with pin 33.Driving axle 19 to be sleeved in screw-casing 31, pin 33 connects in the female thread of screw-casing 31.
Can be seen that, by such configuration, when impact wrench is positioned at impact conditions, owing to impact block 15 drives axle 19 only in periodically impacting, axle 19 is driven to rotate with it without driving, therefore driving axle 19 to rotate, it is inoperative that rotating shaft moves transformational structure, and the axial location of impacting shaft 19 immobilizes.When impact wrench is positioned at rotation status, driving axle 19 to rotate owing to impact block 15 starts to drive, rotating shaft shifting transformational structure makes to drive axle 19 to move axially while rotating, and drives axle 19 to disconnect the connection with impact block 15 when moving to reach to a certain degree.Concrete, in the present embodiment, when driving axle 19 to rotate, the pin of its outer surface rotates thus axial advancement along the female thread of screw-casing 31, drive axle 19 along with simultaneously axial advancement in screw-casing 31, until as shown in Figure 2, drive axle 19 to depart from the impact block 15 of signature in the axial direction.
In an alternate embodiment of the invention, drive the outer surface on axle 19 can also arrange the external screw thread matched with aforementioned female thread, or other can in externally threaded lines other fit structures of movement, do not repeat them here.
It can also be other replacing structures known in the art that rotating shaft moves transformational structure.As in an alternate embodiment of the invention, rotating shaft moves transformational structure and includes the match skewed slot arranged and slide block, one of them of skewed slot and slide block is relative to fuselage fixed and arranged, wherein another is arranged on described driving axle, typically, skewed slot is fixed relative to fuselage, is arranged in the inner surface of a sleeve pipe, and slide block be arranged in drive axle 19 outer surface, and match be arranged in skewed slot.It is similar to the mode of threaded engagement, in such an embodiment, when impact wrench is positioned at rotation status, when driving axle 19 to rotate, the slide block of its outer surface along skewed slot move towards rotate thus axial advancement, drive axle 19 along with while axial advancement, until driving axle 19 to depart from the impact block 15 of signature in the axial direction.Other replacing structures repeat no more.
As depicted in figs. 1 and 2, in the present embodiment, driving axle 19 is integral type structure, it is drive moving axially of axle 19 entirety that rotating shaft moves transformational structure by the translating rotation driving axle 19, drive overall the moving axially so that aforesaid force side departs from impact block 15 of axle, so that driving axle 19 entirety disconnects and the connection of impact block 15.
But in other optional embodiments, drive axle to be alternatively split-type structural.Driving axle 19 can include Part I and the Part II connected with interfixing in a rotational direction, force side is positioned at Part I, and force side is positioned at Part II.Described rotating shaft moves transformational structure moving axially the Part II that translating rotation is driving axle 19 of driving axle 19, and Part II move axially so that Part II departs from Part I so that driving the Part II of axle to disconnect and the connection of described impact block.
Part I interfixes in a rotational direction when Part II is together with connecting, namely can synchronous rotary, but it can move thus disconnecting by antero posterior axis relative to each other, its concrete structure can have multiple, such as it can be fluted disc structure, namely on Part I and the matched end face of Part II, is each provided with fluted disc, moment of torsion can be transmitted when fluted disc connects each other, when departing from, then can not transmit moment of torsion.The couplings of Part I and Part II can also be flat structure, namely on the matched end face of Part I and Part II, one of them is provided with a flat, and another is provided with the hole matched, so can transmitting moment of torsion when flat stretches in hole, if departing from, moment of torsion can not be transmitted.
For the workpiece that stops operating as soon as possible, in an embodiment of the present invention, rotating shaft moves transformational structure and is configured to when driving axle 19 to rotate predetermined amount, drives disconnecting at least partly and the connection of described impact block of axle 19, described predetermined amount range for 1/4 to 3.In another embodiment of the invention, rotating shaft move transformational structure be configured to when drive axle at least part of move axially predeterminable range time, drive disconnecting at least partly and the connection of described impact block of axle, described predeterminable range range for 1 millimeter 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 (9)
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, described driving axle has force side and force side, and described force side receives the power that described impact block applies, and described force side applies active force to processed workpiece；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, also include being arranged in fuselage and driving the rotating shaft between axle to move transformational structure, it is drive at least part of of axle to move axially that described rotating shaft moves transformational structure by the translating rotation of driving axle, so that driving the connection disconnected at least partly with described impact block of axle.
2. impact wrench according to claim 1, it is characterised in that described rotating shaft move transformational structure include relative to the female thread of fuselage fixed and arranged and and what described female thread matched, be positioned at and drive the external screw thread of axle outer surface or pin.
3. impact wrench according to claim 1, it is characterised in that described rotating shaft moves transformational structure and includes the match skewed slot arranged and slide block, and one of them of described skewed slot and slide block is relative to fuselage fixed and arranged, and wherein another is arranged on described driving axle.
4. impact wrench according to claim 1, it is characterized in that, described driving axle is integral type structure, it is drive overall the moving axially of axle that described rotating shaft moves transformational structure by the translating rotation driving axle, what described driving axle was overall moves axially so that force side departs from described impact block, so that driving axle entirety to disconnect the connection with described impact block.
5. impact wrench according to claim 1, it is characterized in that, described driving axle is split-type structural, including the Part I connected with interfixing in a rotational direction and Part II, described force side is positioned at Part I, described force side is positioned at Part II, described rotating shaft moves transformational structure moving axially the Part II that translating rotation is driving axle of driving axle, moving axially so that Part II departs from described Part I of described Part II, so that driving the Part II of axle to disconnect the connection with described impact block.
6. impact wrench according to claim 5, it is characterised in that described Part I and Part II are connected by fluted disc structure with interfixing in a rotational direction.
7. impact wrench according to claim 5, it is characterised in that described Part I and Part II are connected by flat structure with interfixing in a rotational direction.
8. the impact wrench according to claim 1, it is characterised in that described rotating shaft moves transformational structure and is configured to when driving axle to rotate predetermined amount, drives disconnecting at least partly and the connection of described impact block of axle, described predetermined amount range for 1/4 to 3.
9. the impact wrench according to claim 1, it is characterized in that, described rotating shaft move transformational structure be configured to when drive axle at least part of move axially predeterminable range time, drive disconnecting at least partly and the connection of described impact block of axle, described predeterminable range range for 1 millimeter to 2 centimetres.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410798118.3A CN105751134A (en) | 2014-12-18 | 2014-12-18 | Impact wrench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410798118.3A CN105751134A (en) | 2014-12-18 | 2014-12-18 | Impact wrench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105751134A true CN105751134A (en) | 2016-07-13 |
Family
ID=56340826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410798118.3A Pending CN105751134A (en) | 2014-12-18 | 2014-12-18 | Impact wrench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105751134A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62130184A (en) * | 1985-11-29 | 1987-06-12 | トヨタ自動車株式会社 | Controller for clamping force of impact wrench |
| TW250454B (en) * | 1993-04-21 | 1995-07-01 | Yamazaki Haguruma Seisakusho Kk | |
| US6135212A (en) * | 1998-07-28 | 2000-10-24 | Rodcraft Pneumatic Tools Gmbh & Co. Kg | Hammering screwdriver with disengagable striking mechanism |
| CN1343158A (en) * | 1999-03-16 | 2002-04-03 | 株式会社空研 | Reading method of screw rotation angle of hand-held impact wrench, hand-vibration detection method, tighteming evaluation method and control method of hand-held power screw loosensing tool |
| CN102476375A (en) * | 2010-11-29 | 2012-05-30 | 罗伯特·博世有限公司 | Hammer mechanism |
| CN102825583A (en) * | 2011-06-17 | 2012-12-19 | 株式会社牧田 | Impact tool |
-
2014
- 2014-12-18 CN CN201410798118.3A patent/CN105751134A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62130184A (en) * | 1985-11-29 | 1987-06-12 | トヨタ自動車株式会社 | Controller for clamping force of impact wrench |
| TW250454B (en) * | 1993-04-21 | 1995-07-01 | Yamazaki Haguruma Seisakusho Kk | |
| US6135212A (en) * | 1998-07-28 | 2000-10-24 | Rodcraft Pneumatic Tools Gmbh & Co. Kg | Hammering screwdriver with disengagable striking mechanism |
| CN1343158A (en) * | 1999-03-16 | 2002-04-03 | 株式会社空研 | Reading method of screw rotation angle of hand-held impact wrench, hand-vibration detection method, tighteming evaluation method and control method of hand-held power screw loosensing tool |
| CN102476375A (en) * | 2010-11-29 | 2012-05-30 | 罗伯特·博世有限公司 | Hammer mechanism |
| CN102825583A (en) * | 2011-06-17 | 2012-12-19 | 株式会社牧田 | Impact tool |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2621683B1 (en) | Portable electric power tool with radio communication device | |
| CN104440739B (en) | Power tool | |
| CN204572851U (en) | Torque clutch | |
| EP2934819B1 (en) | Impulse wrench with push start feature | |
| JP6173699B2 (en) | Fastening chuck | |
| CN105690162A (en) | Automatic clamping mechanism | |
| CN105751134A (en) | Impact wrench | |
| JP6335297B2 (en) | Torque supply power tool with flywheel | |
| CN104203499A (en) | Impact tool | |
| CN104972438B (en) | Power tool | |
| CN203685914U (en) | Torque limiter for electric tool | |
| EP3548224B1 (en) | Torque impulse wrench | |
| CN105751135A (en) | Impact wrench | |
| CN105751131A (en) | Impact wrench | |
| CN201744680U (en) | Drill chuck with quick assembly and disassembly | |
| CN202579179U (en) | Universal joint connecting rod assembly of screw pump | |
| CN204900586U (en) | Novel limit moment of torsion antioverloading device | |
| CN103174775B (en) | Clutch coupling | |
| CN206468697U (en) | A kind of torque transmitter applied to built-up welding field | |
| CN202192272U (en) | Synchronous type overload protecting structure for servo tool rest | |
| KR100970140B1 (en) | Torque type apparatus for separating screw | |
| CN204604036U (en) | A kind of floating mechanism of expandable | |
| CN103231094B (en) | Quick-change drill chuck | |
| CN100586624C (en) | Milled spindle drill sleeve | |
| CN201368156Y (en) | Inertia tensioning clutch |
Legal Events
| 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 |