CN101152709A - Mechanical percussion mechanism - Google Patents

Mechanical percussion mechanism Download PDF

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Publication number
CN101152709A
CN101152709A CNA2007101544008A CN200710154400A CN101152709A CN 101152709 A CN101152709 A CN 101152709A CN A2007101544008 A CNA2007101544008 A CN A2007101544008A CN 200710154400 A CN200710154400 A CN 200710154400A CN 101152709 A CN101152709 A CN 101152709A
Authority
CN
China
Prior art keywords
impact
driving shaft
shaft
driving
driven
Prior art date
Application number
CNA2007101544008A
Other languages
Chinese (zh)
Inventor
S·T·杨
S·Y·李
M·卢茨
C·A·伍
Original Assignee
罗伯特·博世有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to DE202006014850.7 priority Critical
Priority to DE200620014850 priority patent/DE202006014850U1/en
Application filed by 罗伯特·博世有限公司 filed Critical 罗伯特·博世有限公司
Publication of CN101152709A publication Critical patent/CN101152709A/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25DPERCUSSIVE TOOLS
    • B25D11/00Portable percussive tools with electromotor or other motor drive
    • B25D11/06Means for driving the impulse member
    • B25D11/08Means for driving the impulse member comprising a worm mechanism, i.e. a continuous guide surface with steadily rising and falling incline
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/02Portable 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

Abstract

A mechanical percussion mechanism for a percussion drive of a tool insert in a handheld power tool has a rotatably supported drive shaft, a percussion body connected to the drive shaft in a manner fixed against relative rotation and supported axially movable relative to the drive shaft, a rotatably supported driven shaft connected to the drive shaft in a manner fixed against relative rotation, the percussion body having drive cams and the driven shaft having drive cams, which drive cams of the percussion body and the driven shaft are bringable into operative connection for a percussion drive of the tool insert, and an axial stop provided for the percussion body.

Description

Mechanical percussion mechanism
Technical field
The present invention relates to a kind of mechanical percussion mechanism that is used to drive the insertion tool of hand held power machine with impacting, comprise a driving shaft that rotatably is supported, an impact body and a driven shaft that rotatably is supported, this impact body and driving shaft do not have and are connected with relatively rotating and axially are supported movingly with respect to this driving shaft, this driven shaft does not have with driving shaft with relatively rotating and is connected, wherein, impact body has some driving projections and driven shaft has some driven projections, and they can connect to impact this insertion tool of ground driving in the formation effect.
Background technology
By prior art for example DE 10 2,004 032 789 A1 a kind of rotary impact type driver that has V-shaped groove rotary impact mechanism is disclosed.Rotary impact mechanism changes into the continuous power output of drive motors the moment of momentum of an impulse form usually, wherein the output of the power of motor in a quality intermediate storage and by means of the momentum impact type of high power intensity be delivered on insertion tool, for example drill bit.Especially, rotatablely moving in V-shaped groove rotary impact mechanism is delivered on the heavy amount (rotary impact weight), and wherein rotary impact weight is supported like this, makes to carry out axially-movable.The control of axially-movable is by V-shaped groove and take ball and carry out.A spring is used for the reseting movement of rotary impact weight.
Practice shows, by collision, for example when the rotary impact type driver by mistake drops, rotary impact weight can obtain an enough strong momentum, moves axially on driving shaft so that overcome the such degree of the reset force of spring ground, makes that taking ball is released and drops out from groove.After this beater mechanism can not be operated again, makes electric tool must change or maintenance.
Summary of the invention
Mechanical percussion mechanism of the present invention has advantage, that is, even for example since by mistake or improperly manual operation cause thump the time, impact body can be excessively doughtily along the driving shaft axial deflection.When beater mechanism has for the parts that rotate driving and rotatably be supported can be free-moving, promptly looseningly take element, when for example taking ball (it can be released by strong moving axially), this is especially favourable.According to the present invention, the axial movement of impact body is restricted in the following manner: beater mechanism is provided with an axial backstop.
Mechanical percussion mechanism of the present invention is used to drive the insertion tool of hand held power machine, for example rotary impact type driver with impacting.Beater mechanism comprises a driving shaft that rotatably is supported.It also comprises an impact body, and described impact body and driving shaft do not have and be connected with relatively rotating and axially be supported movingly with respect to driving shaft.In addition, beater mechanism also comprises a driven shaft that rotatably is supported, and the latter does not have with driving shaft with relatively rotating and is connected.Impact body has some and drives projection, and in order to drive insertion tool, these drive projection and can be connected with the driven projection effect of driven shaft with impacting.At this, insertion tool, for example screwdriver head are arranged in a cutter acceptance division, and the latter can be driven by driven shaft.
Mechanical percussion mechanism especially relates to a rotary impact mechanism, more particularly relates to a V-shaped groove rotary impact mechanism.The present invention also can be suitable for other mechanical percussion mechanism, especially rotary impact mechanism.
Impact body and driving shaft are especially taken element via at least one not to be had with relatively rotating and is connected.This at least one take element especially rolling element, a preferred ball.At this, rotation drives and can carry out in the following manner: perhaps impact body is delivered on the driving shaft by means of taking element by rotatablely moving of motor-driven and impact body, and perhaps driving shaft is delivered on the impact body by means of taking element by rotatablely moving of motor-driven and driving shaft.Driving shaft of a motor-driven in known V-shaped groove rotary impact mechanism itself for example, this driving shaft does not have with beater mechanism with relatively rotating and is connected via taking ball.At this, take the V-shaped groove that ball is arranged in driving shaft.
The driven shaft of beater mechanism of the present invention equally rotatably is supported, and wherein, driven shaft does not have with driving shaft with relatively rotating and is connected.This for example can carry out so that direct mode is following: promptly driving shaft for example via shape sealed do not have with driven shaft with relatively rotating be connected.Also can carry out indirectly but rotation drives, its mode is, for example under the situation of V-shaped groove rotary impact mechanism, will be rotatablely moved by the impact body of drive shaft is delivered on the driven shaft.This realizes via the driving projection of impact body and the driven projection of driven shaft.For this reason, the reset force of compression spring is pressed to the direction of driven shaft with impact body, makes driven projection as taking element.
In order to drive insertion tool, impact body additionally axially is supported on driving shaft movingly with impacting.In addition, be provided with a reposition element, the preferred compression spring of helical spring form for example, it makes impact body keep pretension.At this, impact body can be according to the frame mode of mechanical percussion mechanism or towards the direction of driven shaft or towards the direction pretension of motor.For example in known V-shaped groove rotary impact mechanism itself, impact body by one as the helical spring of reposition element direction pretension towards driven shaft.At this, the end of helical spring driving side is for example by touching on the housing of drive motors or on the axle sleeve of driving shaft bearing.The functional mode of mechanical percussion mechanism, especially in order to drive insertion tool with impacting, driving projection is that lengthwise movement how to pass through impact body is connected with the driven projection effect of driven shaft, make energy can be delivered on the driven projection via driving projection, this is common for the technical staff and does not therefore describe in detail at this.
In a kind of preferred form of implementation, this backstop constitutes as flexible member.Preferably for example rubber or soft foam constitute this flexible member by a kind of flexible material, especially elastomer.But this flexible member also can be a spring, a helical spring or disc spring of being made by metal or plastics for example.Flexible member has advantage as backstop: promptly, the axially-movable of impact body not only is limited by backstop, and damped.
In addition, preferred annular of backstop or dish type ground constitutes.This backstop especially circlewise or dish type ground around the driving shaft setting.At this, backstop annular or dish type preferably is bearing on the driving shaft.It for example can suit and bonds on the driving shaft in case of necessity.
By structure annular or dish type of backstop especially annular or the flexible member form of dish type, the big as far as possible area of impact body contacts with backstop when impact body impinges upon on the backstop, so backstop damping axially-movable particularly well.
In a form of implementation of mechanical percussion mechanism of the present invention---wherein impact body is via the direction pretension of a reposition element towards driven shaft, and axial stop prevents the excessive axial deflection of impact body towards the drive motors direction.Therefore backstop is arranged in the zone of driving side end of driving shaft in this form of implementation.In an alternative form of implementation---wherein impact body is towards the direction pretension of drive motors, and axial stop prevents that impact body is towards driven axial excessive axial deflection.For this reason, backstop is arranged in the zone of end of slave end of driving shaft.
Description of drawings
Explain the present invention in detail by means of accompanying drawing below.Wherein:
Fig. 1 illustrates a drive line that has the hand held power machine of mechanical type rotary impact mechanism with the form of exploded view;
Fig. 2 illustrates the cross-sectional view of the mechanical type rotary impact mechanism of Fig. 1.
The specific embodiment
There is shown a drive line that has the rotary impact type driver of mechanical percussion mechanism 50 in decomposition by Fig. 1.Critical piece is described below.
Motor 10 (schematically showing) comprises an armature shaft 12, does not have a gear to be set with relatively rotating as driving pinion 31 on this armature shaft.Driving pinion 31 constitutes the part of two-stage planet device 30 and drives the planetary gear 32 of first gear stage.Planetary gear 31 rolls in a ring gear 36.Thus, 33 rotations of first pinion frame, it drives other planetary gears 35 of second gear stage again via a toothing 34.Planetary gear 35 rolls in ring gear 36 and drives second pinion frame 37.Second pinion frame 37 is connected with a driving shaft 51 nothings of mechanical percussion mechanism 50 with relatively rotating.For this reason, according to Fig. 1, pinion frame 37 constitutes integratedly with the form and the driving shaft 51 of pin.Driving shaft 51 at the end of its transmission device side upper support in a bearing 52, a preferred rolling bearing, especially deep groove ball bearing.The part of the epicyclic gearing 30 of two-stage, bearing 52 and driving shaft 51 is received in the independent housing 20 that is made of plastics.On the end of transmission device side, housing 20 is provided with a cap that is made of plastics equally as protective element 22.Protective element 22 has a central opening that is used to receive armature shaft 12.In end opposite, promptly on the end in the bearing side of housing 20, driving shaft 51 stretches out from housing 20.
The mechanical percussion mechanism 50 of Fig. 1 is V-shaped groove rotary impact mechanisms.It comprises a rotatable driving shaft that is supported 51, and the latter has the element of taking of taking ball 58 forms in V-shaped groove 58.Impact body 56 does not have with driving shaft 51 and is connected with relatively rotating via taking element 57, and feasible via the driving shaft 51 of epicyclic gearing 30 drivings impact body being set to by motor 10 rotatablely moves.Simultaneously, impact body 56 axially is supported on driving shaft 51 movingly.Impact body 56 has the projection 53 of driving.The driven shaft 59 that nothing is supported with relatively rotating is connected with driving shaft 51 nothings by means of driven projection 54 via having the impact body 56 that drives projection 53 with relatively rotating.Under situation about not driving, impact body 56 is via the direction pretension of a compression spring 55 quilts towards driven shaft 59 with impacting.At this, drive projection 53 and be coupled in this wise in the driven projection 54, make rotatablely moving of impact body 56 be delivered on the driven shaft 59.Driven shaft 59 also is bearing in the bearing 61.Packing ring 24 is used to receive with fixation pressure spring 55 and protection housing 20 avoids because heating and the wearing and tearing that the friction of compression spring 55 causes.In order to receive a plug-in type instrument (not shown), driven shaft 59 is connected with a cutter acceptance division 62.Beater mechanism 50 is received in the housing parts that preferably is made of metal 63.At least a portion of shell plates 64 cover shell body components 63 of making by elastoplast.
Be not described in detail the functional mode of V-shaped groove rotary impact mechanism at this, because it early is exactly known for the technical staff.Represent for functional mode: promptly, be prevented from by the screw (not shown) impact type ground raising torque request and the rotatablely moving of driven shaft 59 of touching on workpiece by one only so manyly.The impact body 56 that is driven by driving shaft 51 continues to rotate and press towards the direction of the driving side end of driving shaft 51 against the reset force quilt of compression spring 55 by the element 57 of taking in the V-shaped groove 58.At this, the driving projection 53 of impact body 56 impinges upon on the driven projection 54 of driven shaft 59, and thus, the energy that passes through the rotation savings of impact body 56 is delivered on the driven shaft 59.By described lengthwise movement, driving projection 53 also skids on driving projection 54 and slides off the latter.
For the purpose of clearer, the mechanical percussion mechanism 50 that does not have backstop shown in Figure 1.But in the cross-sectional view of Fig. 2, can be clear that an axial backstop 70.In the form of implementation of Fig. 2, axial stop 70 is made of flexible member annular or dish type of being made by elastomer.The diameter of the dish type flexible member of being made by elastomer is less than the diameter of compression spring 55, so backstop 70 can be arranged on compression spring 55 inside.Backstop 70 does not have and is bearing on the driving shaft 51 and by touching on packing ring 24 with relatively rotating.Thus, impact body 56 is restricted against the maximum axial deflection towards the driving side end direction of driving shaft 51 of the pressure of compression spring 55 on driving shaft 51.If there is not axial stop 70, impact body 56 also may continue towards the direction axially-movable of the driving side end of driving shaft 51, makes to take that element 57 is released and may drop out from V-shaped groove 58.

Claims (8)

1. be used to drive the mechanical percussion mechanism of the insertion tool of hand held power machine with impacting, comprise a driving shaft that rotatably is supported (51), an impact body (56) and a driven shaft that rotatably is supported (59), this impact body is connected with driving shaft (51) nothing with relatively rotating and axially is supported movingly with respect to this driving shaft (51), this driven shaft is connected with driving shaft (51) nothing with relatively rotating, wherein, impact body (56) has some driving projections (53) and driven shaft (59) has some driven projections (54), they can connect to impact this insertion tool of ground driving in the formation effect, it is characterized in that: be provided with an axial stop (70) that is used for impact body (56).
2. beater mechanism as claimed in claim 1 is characterized in that: this backstop (70) constitutes as flexible member.
3. beater mechanism as claimed in claim 2 is characterized in that: this backstop (70) is made of flexible material, especially elastomer.
4. by the described beater mechanism of one of aforesaid right requirement, it is characterized in that: this backstop (70) constitutes circlewise.
5. beater mechanism as claimed in claim 4 is characterized in that: this annular backstop (70) is bearing on the driving shaft (51).
6. as one of above-mentioned claim described beater mechanism, it is characterized in that: impact body (56) is taken element (57) nothing with driving shaft (51) via at least one and is connected with relatively rotating.
7. beater mechanism as claimed in claim 6 is characterized in that: described at least one to take element (57) be a rolling element, especially a ball.
8. hand held power machine, especially rotary impact type driver is characterized in that: it comprises one of one as above-mentioned claim described mechanical percussion mechanism.
CNA2007101544008A 2006-09-27 2007-09-26 Mechanical percussion mechanism CN101152709A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE202006014850.7 2006-09-27
DE200620014850 DE202006014850U1 (en) 2006-09-27 2006-09-27 Mechanical beater for manual machine tool has impact body mounted axially movable and rotationally secured on drive shaft and an elastomer axial stop as ring-shaped spring element also mounted on drive shaft

Publications (1)

Publication Number Publication Date
CN101152709A true CN101152709A (en) 2008-04-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
CNA2007101544008A CN101152709A (en) 2006-09-27 2007-09-26 Mechanical percussion mechanism

Country Status (5)

Country Link
US (1) US20080073092A1 (en)
JP (1) JP2008080485A (en)
CN (1) CN101152709A (en)
DE (1) DE202006014850U1 (en)
GB (1) GB2442324A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101618535A (en) * 2008-07-01 2010-01-06 麦太保有限公司 Impact wrench
CN102905852A (en) * 2010-06-01 2013-01-30 罗伯特·博世有限公司 Portable power tool with mechanical percussion mechanism
CN103167935A (en) * 2010-10-29 2013-06-19 罗伯特·博世有限公司 Hand machine tool comprising a mechanical striking mechanism
CN103201074A (en) * 2010-10-28 2013-07-10 罗伯特·博世有限公司 Mechanical striking mechanism for a hand machine tool
CN103707255A (en) * 2012-10-05 2014-04-09 中国气动工业股份有限公司 Method and mechanism for the indirect coupling torque control

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7673702B2 (en) 2007-08-09 2010-03-09 Ingersoll-Rand Company Impact wrench
DE102010052585A1 (en) 2009-12-07 2011-06-09 Schaeffler Technologies Gmbh & Co. Kg Clutch actuator for moving pressure plate of dual-clutch of motor vehicle, has transmission gear designed such that movement transmitted by gear to pressure plate is discontinuous with movement introduced into gear by electronic unit
CN101758486B (en) * 2010-01-21 2011-09-28 浙江海王电器有限公司 Light single-button multifunctional electric hammer
JP5672429B2 (en) * 2010-03-08 2015-02-18 日立工機株式会社 Impact tools
DE102011011468A1 (en) 2010-03-15 2011-09-15 Schaeffler Technologies Gmbh & Co. Kg Double clutch for coupling engine-side input shaft with one drive-sided output shaft or another drive-sided output shaft, has set-up gear unit for transferring movement to pressing plate
DE102010031499A1 (en) 2010-07-19 2012-01-19 Robert Bosch Gmbh Hand tool with a mechanical percussion
DE102010038210A1 (en) 2010-10-15 2012-04-19 Wera-Werk Hermann Werner Gmbh & Co. Kg Torque transmission device for use with a rotary impact driver
DE102010043737A1 (en) 2010-11-11 2012-05-16 Robert Bosch Gmbh Hand-held power tool i.e. battery-powered torque impact wrench, has insertion tool provided with inner multi-edge clutch that is displaceable on outer holder, and tool holder fastened to driven shaft via force-fit connection
DE102010063080A1 (en) 2010-12-14 2012-06-14 Robert Bosch Gmbh Hand tool with a mechanical percussion
DE102011000710A1 (en) 2011-02-14 2012-08-16 Wera-Werk Hermann Werner Gmbh & Co. Kg Torque transmission device in the form of a bit lining
DE102011085420A1 (en) 2011-10-28 2013-05-02 Robert Bosch Gmbh Hand-held power tool i.e. rechargeable battery rotary impact screwdriver, has ejection element blocking lock sleeve by actuation of one locking element in operating direction in assigned unlocking position
DE102011089910A1 (en) * 2011-12-27 2013-06-27 Robert Bosch Gmbh Hand tool device
DE102012202371A1 (en) 2012-02-16 2013-08-22 Robert Bosch Gmbh Hand-held power tool e.g. rechargeable battery rotary percussion screwdriver has magnetization component that is arranged in region of tool holder so as to provide magnetic force for magnetization of insertion tool and/or tool holder
DE102012208890A1 (en) 2012-05-25 2013-11-28 Robert Bosch Gmbh Hand tool
DE102013208433A1 (en) 2012-05-25 2013-11-28 Robert Bosch Gmbh Power tool
DE102012211183A1 (en) 2012-06-28 2014-01-02 Robert Bosch Gmbh Power tool
DE102012211907A1 (en) 2012-07-09 2014-01-09 Robert Bosch Gmbh Rotary impact wrench with a striking mechanism
DE102012211910A1 (en) 2012-07-09 2014-01-09 Robert Bosch Gmbh Rotary impact wrench with a striking mechanism
DE102012217906A1 (en) 2012-10-01 2014-04-03 Robert Bosch Gmbh Hand tool with a designed to provide a predetermined maximum engine power drive motor
DE102012217913A1 (en) 2012-10-01 2014-04-03 Robert Bosch Gmbh Portable power tool e.g. drywall screwdriver with electronically commutated drive motor has associated machine volume that is set less than one liter, while operating voltage greater than and less than specific volt is supplied
DE102012217917A1 (en) 2012-10-01 2014-04-03 Robert Bosch Gmbh Hand-held power tool e.g. impact screwdriver, has drive motor comprising motor magnet mass that exhibits weight of specific range, and rechargeable battery cells arranged in handgrip of machine housing
DE102013213814A1 (en) 2012-11-15 2014-05-15 Robert Bosch Gmbh Tool attachment for a hand tool
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DE102012220905A1 (en) 2012-11-15 2014-05-15 Robert Bosch Gmbh Handheld machine tool i.e. battery-operated rotary percussion screwdriver, has interface designed such that centering and tangential and radial fixing of attachment to housing are ensured by cooperation of interface with locking elements
DE102013213806A1 (en) 2012-11-15 2014-05-15 Robert Bosch Gmbh Tool attachment for a hand tool
DE102013213804A1 (en) 2012-11-22 2014-05-22 Robert Bosch Gmbh Tool attachment for a hand tool
DE102013205913A1 (en) 2013-04-04 2014-10-09 Robert Bosch Gmbh Electronically commutated drive motor and power tool
DE102013209173A1 (en) 2013-05-17 2014-11-20 Robert Bosch Gmbh Hand tool with a spindle locking device
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DE102014207713A1 (en) 2014-04-24 2015-10-29 Robert Bosch Gmbh Tool attachment for a hand tool
DE102014224366A1 (en) 2014-11-28 2016-06-02 Schaeffler Technologies AG & Co. KG Actuator assembly and method of actuating an actuator
DE102015204807A1 (en) 2015-03-17 2016-09-22 Robert Bosch Gmbh Hand tool and mechanical percussion
DE102015214417A1 (en) 2015-07-29 2017-02-02 Schaeffler Technologies AG & Co. KG Hydrostataktor
DE102016200979A1 (en) 2016-01-25 2017-07-27 Robert Bosch Gmbh Hand tool with a tool holder

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2753965A (en) * 1951-10-03 1956-07-10 Thor Power Tool Co Impact tools
US2907240A (en) * 1957-01-31 1959-10-06 Bosch Gmbh Robert Power-operated, rotary impact-type hand tool
DE1218370B (en) * 1963-09-27 1966-06-02 Bosch Gmbh Robert Motor-driven, especially portable screwdriver
GB1282300A (en) * 1969-12-08 1972-07-19 Desoutter Brothers Ltd Improved impact wrench or screwdriver
JPS6154547B2 (en) * 1982-11-12 1986-11-22 Hitachi Koki Kk
JP3568128B2 (en) * 1994-02-25 2004-09-22 日立工機株式会社 Rotary impact tool
US5836403A (en) * 1996-10-31 1998-11-17 Snap-On Technologies, Inc. Reversible high impact mechanism
US5992538A (en) * 1997-08-08 1999-11-30 Power Tool Holders Incorporated Impact tool driver
US6158526A (en) * 1999-03-09 2000-12-12 Snap-On Tools Company Reversible impact mechanism with structure limiting hammer travel
JP2002046079A (en) * 2000-07-31 2002-02-12 Matsushita Electric Works Ltd Impact rotary tool preventing drop of steel ball
US6733414B2 (en) * 2001-01-12 2004-05-11 Milwaukee Electric Tool Corporation Gear assembly for a power tool
JP3767475B2 (en) * 2001-12-14 2006-04-19 日立工機株式会社 Impact tools
JP4539606B2 (en) * 2006-04-27 2010-09-08 パナソニック電工株式会社 Impact rotary tool that prevents steel balls from falling off

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101618535A (en) * 2008-07-01 2010-01-06 麦太保有限公司 Impact wrench
CN101618535B (en) * 2008-07-01 2013-07-03 麦太保有限公司 Impact wrench
CN102905852A (en) * 2010-06-01 2013-01-30 罗伯特·博世有限公司 Portable power tool with mechanical percussion mechanism
CN103201074A (en) * 2010-10-28 2013-07-10 罗伯特·博世有限公司 Mechanical striking mechanism for a hand machine tool
CN103167935A (en) * 2010-10-29 2013-06-19 罗伯特·博世有限公司 Hand machine tool comprising a mechanical striking mechanism
CN103707255A (en) * 2012-10-05 2014-04-09 中国气动工业股份有限公司 Method and mechanism for the indirect coupling torque control
CN103707255B (en) * 2012-10-05 2015-09-16 中国气动工业股份有限公司 The torque control method of INDIRECT COUPLING and mechanism thereof

Also Published As

Publication number Publication date
GB2442324A (en) 2008-04-02
GB0718639D0 (en) 2007-10-31
DE202006014850U1 (en) 2006-11-23
JP2008080485A (en) 2008-04-10
US20080073092A1 (en) 2008-03-27

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