CN101535007A - Mass oscillating unit for hand-held machine tools with a striking device - Google Patents
Mass oscillating unit for hand-held machine tools with a striking device Download PDFInfo
- Publication number
- CN101535007A CN101535007A CNA200780041828XA CN200780041828A CN101535007A CN 101535007 A CN101535007 A CN 101535007A CN A200780041828X A CNA200780041828X A CN A200780041828XA CN 200780041828 A CN200780041828 A CN 200780041828A CN 101535007 A CN101535007 A CN 101535007A
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- held machine
- hand
- reversal
- unit
- beater mechanism
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
- B25D17/24—Damping the reaction force
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D11/00—Portable percussive tools with electromotor or other motor drive
- B25D11/06—Means for driving the impulse member
- B25D11/12—Means for driving the impulse member comprising a crank mechanism
- B25D11/125—Means for driving the impulse member comprising a crank mechanism with a fluid cushion between the crank drive and the striking body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
- B25D2216/0069—Locking means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
- B25D2217/0073—Arrangements for damping of the reaction force
- B25D2217/0076—Arrangements for damping of the reaction force by use of counterweights
- B25D2217/0084—Arrangements for damping of the reaction force by use of counterweights being fluid-driven
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
- B25D2217/0073—Arrangements for damping of the reaction force
- B25D2217/0076—Arrangements for damping of the reaction force by use of counterweights
- B25D2217/0088—Arrangements for damping of the reaction force by use of counterweights being mechanically-driven
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
- B25D2217/0073—Arrangements for damping of the reaction force
- B25D2217/0076—Arrangements for damping of the reaction force by use of counterweights
- B25D2217/0092—Arrangements for damping of the reaction force by use of counterweights being spring-mounted
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
- B25D2250/131—Idling mode of tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
- B25D2250/231—Sleeve details
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention relates to a striking arrangement (12) for a hand-held machine tool with at least one mass oscillating unit (14), which is intended to generate a counterforce (16) to a force (18) resulting from the striking arrangement. The mass oscillating unit comprises at least one counter oscillating mass (20), which can be excited by means of a driven excitation means (38) counter to the driving direction (26) of the striking arrangement, and a spring element (22) supporting the counter oscillating mass, wherein the excitation means (24) is formed by an eccentric wheel (28a, 28b, 28c, 28d, 28e) or by a pneumatic means (30f). The counter oscillating mass (20) is preferably designed at least partially as a hammer tube (32e) and is provided with a safety mechanism in an idle position.
Description
Technical field
The present invention relates to a kind of by claim 1 hand-held machine percussion mechanism as described in the preamble.
Background technology
The hand-held machine percussion mechanism that has openly had beater mechanism.
Summary of the invention
Propose a kind of hand-held machine percussion mechanism with beater mechanism, this hand-held machine percussion mechanism has at least one unit, and this unit is provided for producing reaction force with respect to the power that produces from described beater mechanism.Can advantageously reduce the vibration that the generation of the shock pulse that passes through described beater mechanism on the shell of the hand-held machine with hand-held machine percussion mechanism causes thus.Reaction force that is produced and the power that produces from described beater mechanism are advantageously directed in the opposite direction, thereby can when reducing vibration, advantageously and at least in part offset described power, and concerning the operator of described hand-held machine, can particularly advantageously almost control to friction thus.Advantageously, be provided with in the unit that produces reaction force within the big range of speeds of driver element in other words in the high frequency of impact scope at described beater mechanism for this reason, make the reaction force that produced can advantageously coordinate mutually aspect direction and time and can reduce vibration to greatest extent with the compression stress of described beater mechanism at this.Described unit can be configured to machinery, electricity and/or unit magnetic and/or pneumatic and/or be configured to other the significant unit and at this machinery, electricity and/or magnetic and other reaction force of make a concerted effort producing with respect to described beater mechanism of seeming to one skilled in the art.
Propose in addition, described unit is made of the inertial oscillation unit, can obtain the reaction force that produces by reversal of vibrations when especially having the reversal of vibrations quality in the described unit that is made of the inertial oscillation unit by means of mechanical excitation simply in design thus with respect to the compression stress of described beater mechanism.
Propose in addition, described unit has at least one spring part that is supporting described reversal of vibrations quality, can advantageously make after the described reversal of vibrations quality described reversal of vibrations quality reset to resting position in other words in the home position in excitation thus, and thus can be once again and especially periodically encourage described reversal of vibrations quality.In addition, the acceleration direction that an extra power is in reverse to described reversal of vibrations quality of the elastic force by described spring part acts on this reversal of vibrations quality in other words by described spring part, thereby can advantageously improve the reaction force of described unit.Advantageously, described spring part is supported on described reversal of vibrations quality on the shell of described hand-held machine.
In a kind of favourable improvement project of the present invention, propose, described unit has at least one excitation part, this excitation part can drive by means of the actuator of described beater mechanism, can make the rotating speed of reaction force that the reversal of vibrations that produced produced in other words and described driver element thus in design simply or be complementary with the frequency of impact of described beater mechanism to be coupled in other words.Described excitation part can be made of electricity, magnetic and/or mechanical excitation part and/or other the significant excitation part that seems to one skilled in the art at this.
Propose in addition, described reversal of vibrations quality can encourage by means of the driving direction that described excitation part is in reverse to described beater mechanism, can advantageously offset making a concerted effort of described reaction force and described beater mechanism thus.
Propose in addition, described excitation part is made of eccentric wheel, thereby especially can periodically encourage described reversal of vibrations quality, and wherein said eccentric wheel preferably is coupled with the rotating speed of described driver element in other words with the frequency of impact of described beater mechanism.
In addition, if described excitation part constitutes by pneumatic, that just can the moment of compression stress maximum advantageously encourages in other words in the compression of described beater mechanism.On the preferred described pneumatic unit that is coupled to described beater mechanism by pneumatic excitation part that constitutes and thus the frequency of impact with described beater mechanism is coupled.
Propose in addition, described reversal of vibrations quality is arranged in the zone of hammer pipe, can vibrate by advantageously reducing on the vibrative position of described beater mechanism thus.Especially can offset the vibration force that from described beater mechanism, produces fast by means of described reaction force, and the vibration propagation of avoiding long power transmission stroke and producing thereupon.In this respect, the zone of pipe " hammer " should be meant in the zone of described hand-held machine percussion mechanism inside, and this zone is at least in part along arranging around the circumferencial direction of described hammer pipe and/or being arranged in the front of described hammer pipe and/or back and/or particularly advantageously directly being made of described hammer pipe at least in part along the driving direction of described beater mechanism.In addition, at least in part described reversal of vibrations quality is being configured to when pipe hammer, can advantageously saving other parts, structure space, installation expense, cost and especially save the weight of described hand-held machine percussion mechanism.
Propose in a kind of other design of the present invention, described unit has locking unit, and this locking unit is provided for described reversal of vibrations quality is fixed in the neutral.Advantageously avoid producing undesirably big reaction force in the time of can stopping at the jump bit of described beater mechanism resting in the resting position in other words thus.In addition, can advantageously avoid the wearing and tearing of not expecting of described hand-held machine percussion mechanism thus, and each parts that can obtain described hand-held machine percussion mechanism high service life of unit in other words.
In addition, a kind of hand-held machine with hand-held machine percussion mechanism is proposed, and thus concerning the operator of described hand-held machine with the small vibration of described hand-held machine percussion mechanism and/or especially advantageously obtain favourable operation comfort with the vibration that almost disappears that is produced of described hand-held machine percussion mechanism.
Description of drawings
Other advantage obtains from the following drawings explanation.Embodiments of the invention shown in the drawings.Described accompanying drawing, specification and claim comprise the number of characteristics combination.Those skilled in the art also can the described feature of advantageously single research and is summarized other significant feature combination.Wherein:
Fig. 1 is the diagrammatic side view that has by the hand-held machine of hand-held machine percussion mechanism of the present invention,
Fig. 2 is described diagrammatic side view by hand-held machine percussion mechanism of the present invention,
Fig. 3 is the eccentric wheel of described hand-held machine percussion mechanism,
Fig. 4 is the schematic diagram of seeing from above as the hand-held machine percussion mechanism of the replacement scheme of Fig. 2,
Fig. 5 is the schematic diagram of seeing from above of the hand-held machine percussion mechanism with stop part of Fig. 2,
Fig. 6 is the schematic diagram of seeing from above of the hand-held machine percussion mechanism of the other spring part of having of Fig. 2,
Fig. 7 is a kind of diagrammatic side view of the hand-held machine percussion mechanism with locking unit of scheme as an alternative in addition,
Fig. 8 be the hand-held machine percussion mechanism of Fig. 7 together with the diagrammatic side view that directly is arranged in the locking unit of hammer on the pipe,
Fig. 9 is a kind of diagrammatic side view of hand-held machine percussion mechanism of scheme as an alternative in addition,
Figure 10 is the schematic diagram of seeing from above of the hand-held machine percussion mechanism of the excitation part of scheme as an alternative that has of Fig. 9,
Figure 11 is a kind of diagrammatic side view of the hand-held machine percussion mechanism with the reversal of vibrations quality that is made of the hammer pipe of scheme as an alternative in addition, and
Figure 12 is the diagrammatic side view that having of a kind of scheme as an alternative in addition is used as pneumatic hand-held machine percussion mechanism of excitation part.
The specific embodiment
Fig. 1 shows the hand-held machine 36a that has by hand-held machine percussion mechanism 10a of the present invention.Described hand-held machine percussion mechanism 10a (Fig. 2) comprises beater mechanism 12a and the unit 14a that is made of the inertial oscillation unit.Described beater mechanism 12a is provided for producing the shock pulse that is used for instrument 40a, and described instrument 40a is among the instrument holder 42a of described hand-held machine 36a (Fig. 1).In addition, the described beater mechanism 12a striker that has piston 44a, pneumatic element 46a, jump bit 48a and be not shown specifically.Described in addition beater mechanism 12a comprises hammer pipe 32a, and described piston 44a and described jump bit 48a are bearing among this hammer pipe 32a according to the mode that can carry out axially-movable along the driving direction 26a of described beater mechanism 12a.Between described piston 44a and jump bit 48a, arranged the pneumatic element 46a (Fig. 2) that constitutes by air cushion.
For driving described beater mechanism 12a, by described hand-held machine 36a be not shown specifically here and produce driving moment by the driver element that motor constitutes.Described driver element passes to the actuator 38a that is made of driving shaft with driving moment, and this actuator 38a is perpendicular to the driving direction 26a orientation (Fig. 2) of described beater mechanism 12a.Described driving shaft on the 50a of the end of described beater mechanism 12a, described driving shaft has eccentric drive unit 52a, this eccentric drive unit 52a has the eccentric wheel 54a that can not be connected with described driving shaft and the cam pin 56a of bolt shape with relatively rotating.Described cam pin 56a is perpendicular to the main extensional surface 58a of described eccentric wheel 54a and perpendicular to the driving direction 26a orientation of described beater mechanism 12a, and is arranged in the zone of the driving axis 60a outside that is made of rotation of the described eccentric wheel 54a of being in of described eccentric wheel 54a.Described cam pin 56a is connected with described piston 44a by the drive rod 62a of described beater mechanism 12a.By means of eccentric drive unit 52a and the drive rod 62a of described beater mechanism 12a, when described hand-held machine 36a operation from carry out with the turning moment of described driving shaft rotatablely move the axial linear movement (Fig. 2) of the described piston 44a of acquisition along the driving direction 26a of described beater mechanism 12a.
Described inertial oscillation unit be arranged in described hand-held machine 36a from described driving shaft see with the reverse zone of the driving direction 26a of described beater mechanism 12a.In addition, the described inertial oscillation unit excitation part 24a that has reversal of vibrations quality 20a, spring part 22a and constitute by eccentric wheel 28a.The driving shaft of the driver element of described eccentric wheel 28a by being provided for driving described beater mechanism 12a drives, and can not be connected with this driving shaft with reversing relatively.Described eccentric wheel 28a has the asymmetric shape of the cam-like of main extensional surface 64a, described main extensional surface 64a about the shape of circle have in the center be used for can not relatively rotate the space 66a (Fig. 3) that fixes with described driving shaft.The eccentric wheel 28a of described inertial oscillation unit in other words driving cam 68a and described beater mechanism 12a eccentric wheel 54a in other words cam pin 56a turn round round driving shaft with 180 ° phase difference along direction of rotation 72a, thereby when the cam pin 56a of the eccentric wheel 54a of described beater mechanism 12a was in the terminal location that points to driving direction 26a, the driving cam 68a of the eccentric wheel 28a of described inertial oscillation unit was in (Fig. 2) in the terminal location that is in reverse to described driving direction 26a.
By means of the eccentric wheel 28a of described cam-like, the driving direction 26a that described reversal of vibrations quality 20a is in reverse to described beater mechanism 12a moves.Described reversal of vibrations quality 20a moves at the elastic force that this overcomes spring part 22a, and wherein said spring part 22a is supported on described reversal of vibrations quality 20a on the shell 70a of described hand-held machine 36a.In the moment of the terminal location of the sensing driving direction 26a of the cam pin 56a of described eccentric drive unit 52a, the driving direction 26a that the power 18a of the maximum that is made of compression stress of described beater mechanism 12a is in reverse to described beater mechanism 12a works.By by means of the eccentric wheel 28a of described cam-like the excitation that described reversal of vibrations quality 20a carries out being produced reaction force 16a, this reaction force 16a almost reaches the maximum that the layout because of described inertial oscillation unit causes in the 18a maximum of making a concerted effort of described beater mechanism 12a.The reaction force 16a of described inertial oscillation unit to be at this 18a that makes a concerted effort that is in reverse to described beater mechanism 12a, makes the 18a that makes a concerted effort of described beater mechanism 12a with described reaction force 16a cancels out each other in the zone of described driving shaft as far as possible and reduction and/or avoid the vibration that is produced (Fig. 2) of described hand-held machine 36a at least.
The spring part 22a of described inertial oscillation unit automatically makes described reversal of vibrations quality 20a reset in the home position at this, is used to make described reversal of vibrations quality 20a to overcome the elastic force of described spring part 22a once again after the rotation round the driving shaft of the eccentric wheel 28a of described cam-like periodically rotates and the driving direction 26a that is in reverse to described beater mechanism 12a moves.By means of the eccentric wheel 28a of described cam-like by drive shaft, the reaction force 16a of described inertial oscillation unit and the current frequency of impact of described beater mechanism 12a are complementary with direction and time of the described power 18a that produces from beater mechanism 12a in other words.In addition, the 18a that makes a concerted effort that described spring part 22a makes inertia increase when described reversal of vibrations quality 20a quickens and described reaction force 16a is in reverse to described beater mechanism 12a thus in the long time interval works.
Fig. 4 to 12 shows the embodiment of scheme as an alternative.Basically keep identical parts, feature and function to represent with identical Reference numeral in principle.But, added alphabetical a to f for the Reference numeral of these embodiment for distinguishing these embodiment.Below explanation be limited to basically and Fig. 1 to 3 in embodiment between difference, wherein about keeping identical parts, feature and the function can be with reference to explanation to the embodiment among Fig. 1 to 3.
Fig. 4 to 6 shows the hand-held machine percussion mechanism 10b of scheme as an alternative.Be used for the eccentric wheel 28b that reversal of vibrations quality 20b encourages is provided for driving beater mechanism 12b simultaneously.In addition, described eccentric wheel 28b has two cam pin 56b, 74b on mutual opposed fringe region 76b, the 78b that is arranged in this eccentric wheel 28b.In addition, described cam pin 74b is used to drive for encouraging described reversal of vibrations quality 20b that the main extensional surface 64b perpendicular to described eccentric wheel 28b extends on the side of cam pin 56b of beater mechanism 12b described eccentric wheel 28b described dorsad.
On described reversal of vibrations quality 20b, other spring part 80b is arranged on the side of pointing to driving direction 26b.This spring part 80b has realized making described cam pin 74b to be coupled on the described reversal of vibrations quality 20b with damping modes, and wherein said cam pin 74b has the direction of motion of the direction of rotation 72b of driving shaft in other words along described eccentric wheel 28b.At this, described cam pin 74b forms compression stress in described beater mechanism 12b the moment is coupled on the described spring part 80b.When described eccentric wheel 28b continues rotation, the described compression stress driving direction 26b that 18b is in reverse among the described beater mechanism 12b that makes a concerted effort in other words increases, and also be in reverse to simultaneously described driving direction 26b push described reversal of vibrations quality 20b and thus the acceleration by described reversal of vibrations quality 20b produce reaction force 16b.If the described cam pin 56b that is used for driving described beater mechanism 12b is in towards the described in other words cam pin 74b that is used for encouraging described reversal of vibrations quality 20b of the terminal location of described beater mechanism 12b and is in terminal location towards described reversal of vibrations quality 20b, that just produces the power 18b of the maximum that is in reverse to described driving direction 26b from described beater mechanism 12b, and produce along the reaction force 16b of the maximum of described driving direction 26b from described inertial oscillation unit, wherein said power 18b and described reaction force 16b cancel out each other at least in part.
Different is with device among Fig. 4, has stop part 82b in inertial oscillation unit described in Fig. 5 and 6, and this stop part 82b is arranged in the back of described other spring part 80b along the driving direction 26b of described beater mechanism 12b.Described stop part 82b prevents that described reversal of vibrations quality 20b from carrying out too big return movement by means of spring part 22b and described reversal of vibrations quality 20b is positioned at being used in the home position encouraging once again by means of described eccentric wheel 28b.
Be coupled to spring element 84b on the described reversal of vibrations quality 20b extraly at the 82b of stop part described in Fig. 6, be used to prevent that described spring part 80b and/or reversal of vibrations quality 20b from colliding described stop part 82b undesirably.In addition, described reversal of vibrations quality 20b is by the spring part 22b on the described shell 70b that is used for being supported on described hand-held machine and be positioned at the home position by means of spring element 84b and be used to carry out new excitation.
Fig. 7 and 8 shows the hand-held machine percussion mechanism 10c that has locking unit 34c by of the present invention, and described locking unit 34c is provided for reversal of vibrations quality 20c is fixed in the neutral.In addition, have spring element 86c, locking element 88c, fixture 90c and be arranged in the locating snap ring 92c that hammers into shape on the pipe 32c at the 34c of locking unit described in Fig. 7.Described spring element 86c upward and at cutter advances in service being arranged in the pre-tensioned position with the shell 70c that described locking element 88c is supported on hand-held machine.Described fixture 90c be connected with described locating snap ring 92c regularly with the end 94c that points to driving direction 26c and with another end 96c according to the inside that can movable mode be arranged in described locking element 88c.In addition, described locking element 88c has along being in reverse to the space 98c that direction that described driving direction 26c extends attenuates, and described fixture 90c is arranged among the 98c of this space according to mode that can axially-movable.By means of described fixture 90c along moving that the axial direction 100c of this fixture 90c carries out, described locking element 88c since the space 98c that attenuates move perpendicular to the axial direction 100c of described fixture 90c.Described spring element 86c moves upward described locking element 88c when being shifted out from the described space 98c that attenuates when driving direction 26c moves to make in other words described locking element 88c to move towards the direction of leaving the shell 70c of described hand-held machine at described fixture 90c in other words.In case described reversal of vibrations quality 20c obtain maximum quicken and be in the contactless position of eccentric wheel 28c in, so described locking element 88c just moves among the locking space 102c that is arranged in described reversal of vibrations quality 20c inside, thereby in axial direction 100c fixes described reversal of vibrations quality 20c.Described neutral is coupled in the neutral of this and beater mechanism 12c.In the neutral of described beater mechanism 12c, described hammer pipe 32c with described locating snap ring 92c along driving direction 26c move and described thus fixture 90c in axial direction 100c from the space 98c that attenuates of described locking element 88c, move out (Fig. 7).
If cancel the neutral of described beater mechanism 12c, so described hammer pipe 32c just moves into normal cutter with locating snap ring 92c and advances in the run location and described fixture 90c just is in reverse among the space 98c that attenuates that described driving direction 26c is pressed into described locking element 88c.The elastic force that overcomes described spring element 86c thus extrudes described locking element 88c and places the home position to be used for encouraging once again by described eccentric wheel 28c described reversal of vibrations quality 20c by means of described spring part 22c from the locking space 102c of described reversal of vibrations quality 20c.(Fig. 7).
Fig. 9 and 10 shows the hand-held machine percussion mechanism 10d with reversal of vibrations quality 20d, and described reversal of vibrations quality 20d arranges round the hammer pipe 32d of beater mechanism 12d cylindricly.Described reversal of vibrations quality 20d is used for reversal of vibrations in the driving direction 26d excitation that this is in reverse to described beater mechanism 12d, and described reversal of vibrations produces reaction force 16d with respect to the 18d that makes a concerted effort of described beater mechanism 12d.Described reversal of vibrations quality 20d is supported on by spring part 22d on the shell 70d of hand-held machine, and wherein said spring part 22d is arranged on described reversal of vibrations quality 20d and the reverse end 124d of driving direction 26d described beater mechanism 12d.Along described driving direction 26d, stop part 126d is arranged on the shell 70d of hand-held machine in the back of described reversal of vibrations quality 20d, this stop part 126d stops described reversal of vibrations quality 20d when vibrating the home position that is used for encouraging once again and prevents that described reversal of vibrations quality 20d from continuing to move along the direction of driving direction 26d undesirably returning.
In Fig. 9, the described reversal of vibrations quality 20d that arranges round hammer pipe 32d encourages to carry out reversal of vibrations by the eccentric wheel 28d different with the eccentric wheel 54d that is used to drive described beater mechanism 12d.Described reversal of vibrations quality 20d encourages by activation lever 128d at this, and described activation lever 128d then is placed in the axially-movable by described eccentric wheel 28d.
In Figure 10, the described reversal of vibrations quality 20d that arranges round hammer pipe 32d drives by described eccentric wheel 28d, to drive described beater mechanism 12d.In addition, the described activation lever 128d that is used to encourage described reversal of vibrations quality 20d has the axial guide 130d along driving direction 26d orientation.
Figure 11 shows hand-held machine percussion mechanism 10e, and this hand-held machine percussion mechanism 10e has the reversal of vibrations quality 20e that is made of hammer pipe 32e of inertial oscillation unit.The action principle of described reversal of vibrations quality 20e and be activated at this corresponding to the embodiment among Fig. 9.
Figure 12 shows the hand-held machine percussion mechanism 10f with the excitation part 24f that is made of pneumatic 30f.In addition, the reversal of vibrations quality 20f of inertial oscillation unit is among the shell 110f of described inertial oscillation unit.The shell 110f of described inertial oscillation unit has the shape that has two valve 132f, 134f cylindraceous.In described shell 110f, excitation is configured to the reversal of vibrations quality 20f of plate-like, to produce the reversal of vibrations of beater mechanism 12f, makes described reversal of vibrations quality 20f produce reaction force 16f with respect to the 18f that makes a concerted effort of described beater mechanism 12f.In addition, described reversal of vibrations quality 20f is supported on the described shell 110f by the spring part 22f on the described shell 110f.Described two valve 132f, 134f are arranged on opposed shell wall 136f, the 138f of described shell 110f, and another valve 134f that a valve 132f in wherein said two valves is provided in input air and this two valves then is provided for discharging air.The described valve 132f that is used for input air is connected with the pneumatic element 46f of described beater mechanism 12f by air pipe line 140f.By the described in other words valve 132f of described air pipe line 140f, by means of the overvoltage among the pneumatic element 46f of described beater mechanism 12f with the air delivery in the shell 110f of described inertial oscillation unit, and in described inertial oscillation unit, produce overvoltage.The elastic force that the driving direction 26f that air overvoltage among the shell 110f of described inertial oscillation unit is in reverse to described beater mechanism 12f overcomes described spring part 22f is expressed to described reversal of vibrations quality 20f on the described shell 110f, thereby causes the reaction force 16f that produces with respect to described beater mechanism 12f.If described reversal of vibrations quality 20f is in the described in other words valve 134f that is used for that air is discharged in the terminal location that is in reverse to described driving direction 26f is not in described shell 110f with hiding by described reversal of vibrations quality 20f the regional 142f inside with overvoltage by means of described overvoltage with the spacing with respect to the minimum of the shell 110f of described inertial oscillation unit, that just can exhaust air in the described hand-held machine.This makes described reversal of vibrations quality 20f along driving direction 26f return movement, the wherein said valve 134f that is used for discharging air is by encouraging the home position that is provided with to be hidden by described reversal of vibrations quality 20f once again, thereby avoids before the reaction force 16f that reaches with respect to the maximum of described beater mechanism 12f air being discharged.
Claims (12)
1. the hand-held machine percussion mechanism has beater mechanism (12) and at least one unit (14), and this unit (14) are used for producing reaction force (16) with respect to the power (18) that produces from described beater mechanism (12).
2. by the described hand-held machine percussion mechanism of claim 1, it is characterized in that described unit (14) are made of the inertial oscillation unit.
3. at least by the described hand-held machine percussion mechanism of claim 2, it is characterized in that described inertial oscillation unit has the reversal of vibrations quality with respect to described beater mechanism (12)
(20)。
4. at least by the described hand-held machine percussion mechanism of claim 3, it is characterized in that described unit (14) have at least one spring part (22) that is supporting described reversal of vibrations quality (20).
5. by each described hand-held machine percussion mechanism in the aforementioned claim, it is characterized in that described unit (14) have at least one excitation part (24), this excitation part (24) can drive by means of the actuator (38) of described beater mechanism (12).
6. at least by claim 3 and 5 described hand-held machine percussion mechanisms, it is characterized in that described reversal of vibrations quality (20) can encourage by means of the driving direction (26) that described excitation part (38) is in reverse to described beater mechanism (12).
7. at least by the described hand-held machine percussion mechanism of claim 5, it is characterized in that described excitation part (24) is by eccentric wheel (28a; 28b; 28c; 28d; 28e) constitute.
8. at least by the described hand-held machine percussion mechanism of claim 5, it is characterized in that described excitation part (24) is made of pneumatic (30f).
9. at least by the described hand-held machine percussion mechanism of claim 3, it is characterized in that described reversal of vibrations quality (20) is arranged in the zone of hammer pipe (32).
10. at least by the described hand-held machine percussion mechanism of claim 9, it is characterized in that described reversal of vibrations quality (20) is configured to hammer pipe (32e) at least in part.
11. by the described hand-held machine percussion mechanism of claim 3, it is characterized in that described unit (14) have locking unit (34c) at least, this locking unit (34c) is used for described reversal of vibrations quality (20) is fixed on neutral.
12. have hand-held machine by each described hand-held machine percussion mechanism in the aforementioned claim.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006053105A DE102006053105A1 (en) | 2006-11-10 | 2006-11-10 | Hand tools percussion device |
| DE102006053105.1 | 2006-11-10 | ||
| PCT/EP2007/059988 WO2008055743A1 (en) | 2006-11-10 | 2007-09-20 | Mass oscillating unit for hand-held machine tools with a striking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101535007A true CN101535007A (en) | 2009-09-16 |
| CN101535007B CN101535007B (en) | 2011-10-05 |
Family
ID=38829021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200780041828XA Expired - Fee Related CN101535007B (en) | 2006-11-10 | 2007-09-20 | Mass oscillating unit for hand-held machine tools with a striking device |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP2089192B1 (en) |
| CN (1) | CN101535007B (en) |
| AT (1) | ATE502732T1 (en) |
| DE (2) | DE102006053105A1 (en) |
| RU (1) | RU2466856C2 (en) |
| WO (1) | WO2008055743A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102666027A (en) * | 2009-11-25 | 2012-09-12 | 罗伯特·博世有限公司 | Variation of the natural frequency of vibratory means in electric tools |
| CN103894982A (en) * | 2012-12-24 | 2014-07-02 | 苏州宝时得电动工具有限公司 | Electric impacting tool |
| CN109404514A (en) * | 2017-08-14 | 2019-03-01 | 苏州宝时得电动工具有限公司 | Support construction, transmission mechanism and the electric tool of eccentric wheel |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008044219A1 (en) * | 2008-12-01 | 2010-06-02 | Robert Bosch Gmbh | Hand machine tool device |
| DE102009027423A1 (en) * | 2009-07-02 | 2011-01-05 | Robert Bosch Gmbh | Device for reducing and / or compensating vibrations, in particular for a handheld power tool and for use in handheld power tools |
| DE102009044941A1 (en) * | 2009-09-24 | 2011-03-31 | Robert Bosch Gmbh | Counteroscillator, which is providable to compensate for housing vibrations of a power tool in this |
| DE102010039787A1 (en) * | 2010-08-26 | 2012-03-01 | Robert Bosch Gmbh | Hand tool |
| DE102012221517A1 (en) * | 2012-11-26 | 2014-05-28 | Robert Bosch Gmbh | Hand machine tool apparatus of powered hand tool e.g. drilling and/or percussion hammer, has sensor unit that is provided for detection of characteristic variable at portion of compensation unit |
| US10814468B2 (en) | 2017-10-20 | 2020-10-27 | Milwaukee Electric Tool Corporation | Percussion tool |
| WO2019147919A1 (en) | 2018-01-26 | 2019-08-01 | Milwaukee Electric Tool Corporation | Percussion tool |
| EP3626398A1 (en) * | 2018-09-19 | 2020-03-25 | Hilti Aktiengesellschaft | Forcibly energised biharmonic damper |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU130449A1 (en) * | 1959-12-18 | 1960-11-30 | Е.В. Александров | Electric hammer |
| GB2129733A (en) * | 1982-10-27 | 1984-05-23 | Jean Walton | More-vibration-free concrete breakers and percussion drills |
| DE10021355B4 (en) * | 2000-05-02 | 2005-04-28 | Hilti Ag | Beating electric hand tool with vibration-decoupled assemblies |
| CN2600223Y (en) * | 2002-12-11 | 2004-01-21 | 林青田 | Damping device of reciprocating pneumatic tool |
| DE202004021825U1 (en) * | 2003-03-21 | 2011-05-05 | Black & Decker Inc., Newark | Vibration reduction device for a power tool and power tool with such a device |
| JP4527468B2 (en) * | 2004-08-17 | 2010-08-18 | 株式会社マキタ | Electric tool |
-
2006
- 2006-11-10 DE DE102006053105A patent/DE102006053105A1/en not_active Withdrawn
-
2007
- 2007-09-20 CN CN200780041828XA patent/CN101535007B/en not_active Expired - Fee Related
- 2007-09-20 WO PCT/EP2007/059988 patent/WO2008055743A1/en active Application Filing
- 2007-09-20 AT AT07803568T patent/ATE502732T1/en active
- 2007-09-20 EP EP07803568A patent/EP2089192B1/en not_active Not-in-force
- 2007-09-20 RU RU2009121814/02A patent/RU2466856C2/en not_active IP Right Cessation
- 2007-09-20 DE DE502007006800T patent/DE502007006800D1/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102666027A (en) * | 2009-11-25 | 2012-09-12 | 罗伯特·博世有限公司 | Variation of the natural frequency of vibratory means in electric tools |
| CN102666027B (en) * | 2009-11-25 | 2015-07-22 | 罗伯特·博世有限公司 | Variation of the natural frequency of vibratory means in electric tools |
| CN103894982A (en) * | 2012-12-24 | 2014-07-02 | 苏州宝时得电动工具有限公司 | Electric impacting tool |
| CN109404514A (en) * | 2017-08-14 | 2019-03-01 | 苏州宝时得电动工具有限公司 | Support construction, transmission mechanism and the electric tool of eccentric wheel |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2466856C2 (en) | 2012-11-20 |
| ATE502732T1 (en) | 2011-04-15 |
| DE102006053105A1 (en) | 2008-05-15 |
| DE502007006800D1 (en) | 2011-05-05 |
| CN101535007B (en) | 2011-10-05 |
| EP2089192B1 (en) | 2011-03-23 |
| RU2009121814A (en) | 2010-12-20 |
| WO2008055743A1 (en) | 2008-05-15 |
| EP2089192A1 (en) | 2009-08-19 |
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Granted publication date: 20111005 Termination date: 20180920 |