EP1965953B1 - Hand machine tool - Google Patents
Hand machine tool Download PDFInfo
- Publication number
- EP1965953B1 EP1965953B1 EP06819466.1A EP06819466A EP1965953B1 EP 1965953 B1 EP1965953 B1 EP 1965953B1 EP 06819466 A EP06819466 A EP 06819466A EP 1965953 B1 EP1965953 B1 EP 1965953B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- shell
- housing shell
- damping means
- damping
- 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.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/006—Vibration damping means
Definitions
- the invention relates to a hand tool according to the preamble of claim 1 and a hand tool housing unit according to the preamble of claim 10.
- a hand tool and such a power tool housing unit are made US 4 905 772 A known.
- a hand tool machine is known with a housing, which comprises a first housing shell for applying a hand in an operation and a second housing shell.
- the housing shells are held together by a vibration damping element.
- From the DE 42 11 316 A1 is a power tool with a first housing part which receives a motor and a second housing part which is formed from two housing shells and the handle shows. An edge of the second housing part engages over an edge of the first housing part. There is a game between these edges. Vibration-damping body sit selectively at both edges and support the two housing parts radially and axially against each other, wherein the housing parts are arranged substantially uncovered to each other.
- the damping means in the assembled state at least largely surrounds the second housing shell.
- a large area of the power tool can be used as a vibration-damped handle area, which allows a comfortable, low-stress holding the power tool.
- Internal parts of the power tool such as e.g. Engine, fan, gear, tool holder, tool, etc., which cause vibrations during operation, are preferably carried by the second housing shell. In this case, a comfortable holding the hand tool on the first housing shell in the region of these internal parts - and thus a safe guidance of the power tool during operation - can be achieved.
- the first housing shell is positively connected to the second housing shell by the damping means.
- the damping means is formed as a compounded thermoplastic, which consists of a thermoplastic mixed with additional materials.
- the damping means is designed as TPE (thermoplastic elastomer).
- the first housing shell at least partially surrounds the second housing shell.
- a large area of the power tool can be used as a vibration-damped handle area, which allows a comfortable, low-stress holding the power tool.
- Internal parts of the power tool such as e.g. Engine, fan, gear, tool holder, tool, etc., which cause vibrations during operation, are preferably carried by the second housing shell. In this case, a comfortable holding the hand tool on the first housing shell in the region of these internal parts - and thus a safe guidance of the power tool during operation - can be achieved.
- the first housing shell is positively connected to the second housing shell by the damping means.
- the damping means is formed as a compounded thermoplastic, which consists of a thermoplastic mixed with additional materials.
- the damping means is designed as TPE (thermoplastic elastomer).
- the damping means in the mounted state at least largely surrounds the second housing shell, whereby a predominantly homogeneous vibration damping along the circumference of the power tool can be achieved.
- the damping means is designed as a housing section, which has a housing outer surface. It can be saved material and space. Furthermore, the damping function of the damping means can be perceived by an operator.
- the holding means has a fastening element which is provided for producing a latching connection with at least one of the housing shells.
- the handheld power tool has a securing means, which is provided to limit a relative movement of the first and the second housing shell during operation.
- a securing means which is provided to limit a relative movement of the first and the second housing shell during operation.
- a high level of safety can be achieved when operating the handheld power tool. If vibrations of the housing shells relative to one another occur during a failure of the damping means, for example during its overload, the amplitude of these vibrations can be limited.
- the securing means is designed as a stop element, which is advantageous in the occurrence of large vibrations acoustic warning signals can transmit and thus alert an operator to possible damage.
- the damping means biased in the assembled state rests against one of the housing shells.
- an effective support of the second housing shell in a desired position e.g. be achieved in a centered position within the first housing shell, wherein a transmission of vibrations can be attenuated particularly effective.
- the handle portion has a handle made of a soft component, which is directly connected to the damping means. It can be achieved by placing a hand on the handle area increased ease of use.
- the handle portion has a made of a soft component handle means, which is designed in one piece with the damping means.
- the gripping means can be produced simultaneously with the damping means in a manufacturing step.
- the grip means and the damping means can be produced simultaneously in one spray pass.
- a compact arrangement of the housing shells can be achieved if the gripping means is arranged on the first housing shell and has at least one section which encloses the first housing shell penetrates and continues as a damping support member for supporting the second housing shell.
- a handheld power tool housing unit with the features of claim 10 is also proposed.
- FIG. 1 shows a designed as eccentric grinder 10 hand tool.
- This comprises a hand tool housing unit with a first housing shell 12, which has an outer surface which is formed as a handle region 14 for applying a hand during operation of the eccentric grinder 10, and a second housing shell 16. This is partially enclosed by the first housing shell 12.
- the first and the second housing shell 12, 16 are each divided into two shell halves 12.1, 12.2 and 16.1, 16.2, which are screwed together in the assembled state.
- FIG. 1 is the eccentric grinder 10 can be seen, in which the shell halves 12.2, 16.2 are removed.
- the description of FIG. 1 refers repeatedly to the Figures 2 and 3 , in which the shell halves 12.2 and 16.2 are shown.
- the shell half 16.1 also has guide elements 30, through which screws in trained as a screw receiving fasteners 31 of the shell half 16.2 (see FIG. 2 ) are screwed into it. Furthermore, the shell half 12.1 webs 22.1, 24.1, which in cooperation with other webs 22.2, 24.2 of the shell half 12.2 ( FIG. 3 ) form a receiving area 26 for receiving a switch 28.
- the shell half 16.1 components of the eccentric grinder 10 are mounted, namely a motor unit 32, of which an armature shaft 34, an armature 38, a stator 40 and a commutator 42 can be seen, and a dust blower 44.
- a motor unit 32 of which an armature shaft 34, an armature 38, a stator 40 and a commutator 42 can be seen, and a dust blower 44.
- On both sides of the commutator 42 are arranged holding elements For To recognize carbon brushes. It can also be seen a sanding pad 46, on which vibrating legs 48 are attached.
- the housing shell 16 also has an extension, which is designed as a connection element 50 to which a dust container 52 is attached for receiving dust during operation.
- the first housing shell 12 also has an opening 54 through which an electrical cable 56 is passed.
- the housing shells 12, 16 are connected to each other by damping means 58, 60.
- the damping means 58 which is made of a thermoplastic or elastomer, is inserted in a receptacle 62.1 of the shell half 12.1 on the one hand and in a receptacle 64.1 of the shell half 16.1 on the other.
- the damping means 58 is further inserted in receptacles 62.2 and 64.2 of the shell half 12.2 or 16.2 (see Figures 2 and 3 ).
- the housing shells 12, 16 in the assembled state by the damping means 58 are positively connected to each other.
- the damping means 60 which is designed in the form of a bellows, is formed as a housing portion and has a housing outer surface 66 (see FIG. 3 ). It has two damping parts 60.1, 60.2 (FIG. FIG. 3 ) made of a thermoplastic elastomer (TPE). The damping part 60.1 or 60.2 is sprayed in a production of the shell half 12.1 and 12.2 of the first housing shell 12 in a two-component injection molding. In the mounted state of the eccentric grinder 10, the damping means 60 surrounds the second housing shell 16. By the damping means 58, 60, a transfer of vibrations arising within the second housing shell 16 to the first housing shell 12 is advantageous damped, whereby a comfortable holding the eccentric grinder 10 on the handle portion 14 is achieved during operation.
- TPE thermoplastic elastomer
- a holding means 68 of the power tool housing unit is further molded, which is provided for producing a positive connection with the second housing shell 16.
- the holding means 68 is formed as an intermediate flange, which has two flange 68.1, 68.2 (see also FIG. 3 ).
- the flange 68.1 and 68.2 is designed in the form of a half ring and is connected cohesively to the damping member 60.1 or 60.2 by injection molding.
- the holding means 68 is made of a hard component, for example the hard component, from which the first housing shell 12 is made.
- the flange 68.1, 68.2 each have two guide grooves 70.1, 72.1 and 70.2, 72.2 (see also FIG. 3 ).
- connecting elements 74.1, 76.1 of the shell half 16.1 are arranged in the guide grooves 70.1 and 72.1, while connecting elements 74.2, 76.2 of the shell half 16.2 are arranged in the guide grooves 70.2 and 72.2, respectively (see Figures 2 and 3 ).
- the connecting elements 74.1, 74.2, 76.1, 76.2 each have an L-shaped profile.
- the power tool housing unit is provided with a securing means 78.
- the securing means 78 is designed as a stop means, which webs 80.1, 80.2, 82.1, 82.2 of the first housing shell 12 and webs 84.1, 84.2, 86.1, 86.2 of the second housing shell 16 has (see also Figures 2 and 3 ).
- the securing means 78 can occur during operation of a relative movement of the first and the second housing shell 12, 16 are limited in the axial direction 88 and transversely to the axial direction 88. If the damping means 58, 60 fails in exceptional cases of overuse and can not afford the desired vibration damping, vibrations with large amplitudes can occur.
- the webs 80.1, 84.1 - and correspondingly further pairs of webs of the housing shells 12, 16 - are spaced apart from each other in the axial direction 88.
- the distance is determined by the oscillation amplitude occurring at maximum load. If this distance is exceeded, acoustic warning signals are generated when the system is triggered, which can alert an operator to possible damage.
- the securing means 78 can prevent the first housing shell 12 from being detached from the second housing shell 16 when these strong vibrations occur.
- FIG. 2 the separate shell halves 16.1, 16.2 of the second housing shell 16 are shown in a perspective view. A description of the components made in the previous paragraphs will not be repeated here.
- FIG. 2 also shows the damping means 58.
- This has an upper plate 90 and a lower plate 92, which are interconnected by three leg-shaped connecting elements 94.
- the connecting elements 74.1, 76.1 of the shell half 16.1 form a recess 96.1.
- the connecting elements 74.2, 76.2 of the shell half 16.2 also form a recess which in FIG. 2 is not visible and in a trained as a snap element fastener 98.2 of the flange 68.2 (see FIG. 3 ) is arranged in the assembled state.
- this fastener is made of a wall 100.1 of the shell half 16.1 a space 102.1 recessed. Accordingly, the shell half 16.2 has a space (not visible), which is provided for locking the fastening element 98.2.
- the fastening element 98.2 and the corresponding fastening element assigned to the shell half 12.1 are integrally formed on the flange part 68.2 or 68.1 (see FIG FIG. 3 ).
- FIG. 3 shows the shell half 12.2 of the first housing shell 12, the damping means 60 and the damping member 60.2 and the retaining means 68 and the flange 68.2 in a perspective view. A description of all components presented in the preceding paragraphs will not be repeated here.
- the second housing shell 16 is then mounted as a finished assembly in the shell half 12.1 of the first housing shell 12, wherein the connecting elements 74.1, 76.1 are introduced into the guide grooves 70.1 and 72.1 of the holding means 68.
- the connecting elements 74.1, 76.1 openings, of which an opening 104.1 in FIG. 2 is visible.
- a wall 108.1 ( FIG. 1 ) of the guide groove 72.1 In this opening 104.1 a wall 108.1 ( FIG. 1 ) of the guide groove 72.1. Accordingly, a wall 106.1 of the guide groove 70.1 engages in a corresponding and invisible opening of the connecting element 74.1.
- the fastening element of the flange part 68.1 designed as a snap element, which corresponds to the fastening element 98.2 of the flange part 68.2, penetrates into the recess 96.1 and then engages in the space 102.1, whereby a positive connection between the shell halves 12.1, 16.1 arises.
- the second housing shell 16 in the shell half 12.1 also penetrates one half of the upper plate 90 of the damping means 58 in the receptacle 62.1 a. As a result, the second housing shell 16 is fixed and secured in the axial direction 88.
- the shell half 12.2 of the first housing shell 12 is attached to the shell half 12.1, wherein walls 106.2, 108.2 of the guide grooves 70.2, 72.2 (FIG. FIG. 3 ) engage in openings of the connecting elements 74.2 and 76.2. Of these openings is an opening 104.2 of the connecting element 76.2 in FIG. 2 visible.
- the fastener 98.2 snaps into the space of the shell half 16.2, which corresponds to the space 102.1 of the shell half 16.1.
- the second half of the upper plate 90 of the damping means 58 is received in the receptacle 62.2.
- the shell halves 12.1, 12.2 are then screwed together, wherein executed as a screw fastening means by the guide elements 18 in the screw as trained fasteners 20 of the shell half 12.2 are screwed.
- FIG. 4 shows the damping part 60.1 molded onto the shell half 12.1.
- a flange 110.1 of the holding means 68 is molded.
- a formed as a web attachment element 112.1 is formed, which has a hook 116.
- On the flange 110.1 is further formed another, identically designed fastener, which is arranged opposite the fastener 112.1 (in FIG. 4 Not shown).
- a flange part is molded in this embodiment as well, which is designed according to the flange 110.1. The function of these fasteners is based on the FIGS. 5 and 6 explained.
- FIG. 5 shows the second housing shell 16 in the screwed-together state.
- the shell halves 16.1, 16.2 each have a bridge-shaped fastening element 118.1 or 118.2 and a guide channel 120.1 or 120.2.
- the guide channel 120. 1 is formed by two plateaus 121, wherein the fastening element 118. 1 connects the plateaus 121 to one another. Accordingly, the guide channel 120.1 is also formed by two plateaus 121. Under the plateaus 121 a free space 123 is provided in each case, which serves to engage one of the flange parts (see also FIG. 6 ).
- the shell halves 16.1, 16.2 each have another bridge-shaped fastening element and a further guide channel, which are not shown in the figure and at one of in FIG. 5 shown side of the housing shell 16 opposite side are arranged. Based on FIG. 6 the attachment of the second housing shell 16 to the shell half 12.1 is described by the interaction of the fastening elements 118.1 and 112.1.
- FIG. 6 the second housing shell 16 is again shown, which is mounted in the shell half 12.1 of the first housing shell 12. Fixed to the shell half 12.1, the damping part 60.1 can be seen, to which the flange 110.1 is molded.
- the damping part 60.1 can be seen, to which the flange 110.1 is molded.
- the fastening element 112. FIG. 4 into the guide channel 120.1 ( FIG. 5 ) until the hook 116 reaches the bridge-shaped fastener 118.1.
- inserting also engages the flange 110.1 in the space 123 ( FIG. 5 ) below the plateau 121. Continuing the insertion pushes the hook 116 under the fastener 118.1 until the hook 116 snaps out therefrom, thereby establishing a latching connection.
- an identical latching connection is produced by means of the second fastening element of the flange 110.1.
- FIG. 7 is the eccentric grinder 10 off FIG. 1 in which an alternative damping means 122 is used is.
- the damping means 122 which is made of an elastic plastic, has two formed as molded parts and each one of the shell halves 12.1, 12.2 associated damping parts.
- a damping member 124.1 can be seen, which rests against the shell half 12.1 and the second housing shell 16.
- the damping parts are each formed as a half ring, so that the damping means 122 surrounds the second housing shell 16 in the assembled state of the eccentric grinder 10.
- the second housing shell 16 is mounted with assembled inner elements as a complete assembly in the shell half 12.1.
- the damping member 124.1 is inserted between the second housing shell 16 and the shell half 12.1.
- FIG. 8 is another shown as eccentric 126 trained hand tool in a sectional view. This description is limited to the differences to the eccentric grinder 10 of FIG. 1 in which elements of the eccentric grinder 126 which are identical to corresponding elements of the eccentric grinder 10 or the same Functioning, no new reference numbers are given.
- the damping means 58 which, as described above, serves to support the shell halves 16.1, 16.2 in the axial direction 88, is injected in this embodiment by a two-component injection molding in the shell half 12.1 of the first housing shell 12.
- the handle region 14 also has a gripping means 128, also called “softgrip”, which is made of a soft component, which is molded onto the first housing shell 12 in a two-component injection molding process.
- a damping means 132 is molded from an elastic plastic to an inner surface 130 of the shell half 12.1.
- This has supporting elements 134 designed as support ribs, which are attached to the inner surface 130, and continues at the lower edge 136 of the first housing shell 12 and further on an outer surface 138.
- a retaining element 140 is formed on the damping means 132, which penetrates into a recess 142 of the shell half 12.1.
- the shell halves 16.1, 16.2 of the second housing shell 16 which are screwed together, into which the motor unit 32 and the dust fan 44 are mounted, are inserted as a complete assembly in the shell half 12.1 of the first housing shell 12.
- a portion 143 of the damping means 58 is inserted into a groove 144 of the second housing shell 16.
- the second housing shell 16 is also on the supporting elements 134 of the damping means 132 formed as support ribs within the shell half 12.1 placed, wherein the housing shell 16 is centered relative to the shell half 12.1.
- the support members 134 are slightly compressed and are after mounting on the second housing shell 16 in a prestressed state.
- FIG. 9 shows a further embodiment of the first housing shell 12 of the eccentric grinder 126 FIG. 8 ,
- the gripping means 128 is made in one piece with the damping means 132.
- Formed on the gripping means 128 are sections 145 which penetrate the first housing shell 12 through recesses 146 of the housing shell 12 and continue as the damping means 132 with the support elements 134 designed as support ribs.
- the shell half 12.1 is sprayed with a hard component.
- the handle means 128 are molded onto the outer surface 138 and the damping means 132 to the inner surface 130 of the shell half 12.1 with a soft component simultaneously in an injection molding of a two-component injection molding.
- FIG. 10 another hand tool machine designed as an eccentric grinder 148 is shown.
- This has a hand tool housing unit with a first housing shell 150 and a second housing shell 156, wherein the first housing shell 150, the second housing shell 156 partially encloses.
- the first housing shell 150 has a handle portion 152 and a switch 154.
- the housing shells 150, 156 are interconnected by a soft component damping means 158 formed in the shape of an annular bellows, thereby transferring vibrations generated within the second housing shell 156 during operation to the first housing shell 150, in particular its handle portion 152, is dampened.
- the damping means 158 is formed as a housing portion and has a housing outer surface 159.
- FIG. 11 shows another hand tool, which is also designed as an eccentric grinder 160.
- This has a hand tool housing unit with a first housing shell 162 and a second housing shell 168, which is partially enclosed by the first housing shell 162.
- the first housing shell 162 has a handle portion 164 and a switch 166.
- the housing shells 162, 168 are connected to each other via damping means 170, 172.
- the damping means 170 is made of a damping foam, for example made of polyurethane, and is firmly connected to the second housing shell 168. In the mounted state, the damping means 170 bears against the first housing shell 162, whereby it is vibration-decoupled from the second housing shell 168 in the handle region 164.
- the damping means 172 is also formed of a damping foam and firmly connected to the second housing shell 168. In the assembled state, the damping means 172 is applied to the first housing shell 162, whereby a transmission of vibrations, which arise within the second housing shell 168 in an operation, is damped on the first housing shell 162 in a lateral region 174 during operation.
Description
Die Erfindung geht aus von einer Handwerkzeugmaschine nach dem Oberbegriff des Anspruchs 1 und von einer Handwerkzeugmaschinengehäuseeinheit nach dem Oberbegriff des Anspruchs 10. Eine solche Handwerkzeugmaschine und eine solche Handwerkzeugmaschinengehäuseeinheit sind aus
Aus der
Aus der
Es wird eine Handwerkzeugmaschine mit den Merkmalen des Anspruchs 1 vorgesehen, wobei das Dämpfungsmittel im montierten Zustand zumindest weitgehend die zweite Gehäuseschale umgibt. Dadurch kann eine überwiegend homogene Vibrationsdämpfung entlang des Umfangs der Handwerkzeugmaschine erreicht werden. Ferner kann ein großer Bereich der Handwerkzeugmaschine als schwingungsgedämpfter Handgriffbereich genutzt werden, was ein komfortables, wenig belastendes Halten der Handwerkzeugmaschine ermöglicht. Interne Teile der Handwerkzeugmaschine, wie z.B. Motor, Lüfter, Getriebe, Werkzeugaufnahme, Werkzeug usw., welche bei einem Betrieb Vibrationen verursachen, werden vorzugsweise von der zweiten Gehäuseschale getragen. Dabei kann ein komfortables Halten der Handwerkzeugmaschine an der ersten Gehäuseschale im Bereich dieser internen Teile - und dadurch ein sicheres Führen der Handwerkzeugmaschine bei einem Betrieb - erreicht werden.It is a hand tool provided with the features of claim 1, wherein the damping means in the assembled state, at least largely surrounds the second housing shell. This allows a predominantly homogeneous vibration damping along the circumference of the power tool can be achieved. Furthermore, a large area of the power tool can be used as a vibration-damped handle area, which allows a comfortable, low-stress holding the power tool. Internal parts of the power tool, such as e.g. Engine, fan, gear, tool holder, tool, etc., which cause vibrations during operation, are preferably carried by the second housing shell. In this case, a comfortable holding the hand tool on the first housing shell in the region of these internal parts - and thus a safe guidance of the power tool during operation - can be achieved.
Es wird außerdem vorgeschlagen, dass die erste Gehäuseschale mit der zweiten Gehäuseschale durch das Dämpfungsmittel formschlüssig verbunden ist. Dadurch kann eine effektive Dämpfung erreicht werden und es können zusätzliche Elemente zum Stabilisieren der zweiten Gehäuseschale an der ersten Gehäuseschale vorteilhaft eingespart werden. Vorteilhafterweise ist das Dämpfungsmittel als compoundierter Thermoplast ausgebildet, welcher aus einem mit Zusatzmaterialien gemischten Thermoplast besteht. Beispielsweise ist das Dämpfungsmittel als TPE (thermoplastisches Elastomer) ausgebildet.It is also proposed that the first housing shell is positively connected to the second housing shell by the damping means. As a result, an effective damping can be achieved and additional elements for stabilizing the second housing shell on the first housing shell can advantageously be saved. Advantageously, the damping means is formed as a compounded thermoplastic, which consists of a thermoplastic mixed with additional materials. For example, the damping means is designed as TPE (thermoplastic elastomer).
Es wird vorgeschlagen, dass die erste Gehäuseschale die zweite Gehäuseschale zumindest teilweise umschließt. Dadurch kann ein großer Bereich der Handwerkzeugmaschine als schwingungsgedämpfter Handgriffbereich genutzt werden, was ein komfortables, wenig belastendes Halten der Handwerkzeugmaschine ermöglicht. Interne Teile der Handwerkzeugmaschine, wie z.B. Motor, Lüfter, Getriebe, Werkzeugaufnahme, Werkzeug usw., welche bei einem Betrieb Vibrationen verursachen, werden vorzugsweise von der zweiten Gehäuseschale getragen. Dabei kann ein komfortables Halten der Handwerkzeugmaschine an der ersten Gehäuseschale im Bereich dieser internen Teile - und dadurch ein sicheres Führen der Handwerkzeugmaschine bei einem Betrieb - erreicht werden.It is proposed that the first housing shell at least partially surrounds the second housing shell. As a result, a large area of the power tool can be used as a vibration-damped handle area, which allows a comfortable, low-stress holding the power tool. Internal parts of the power tool, such as e.g. Engine, fan, gear, tool holder, tool, etc., which cause vibrations during operation, are preferably carried by the second housing shell. In this case, a comfortable holding the hand tool on the first housing shell in the region of these internal parts - and thus a safe guidance of the power tool during operation - can be achieved.
Es wird außerdem vorgeschlagen, dass die erste Gehäuseschale mit der zweiten Gehäuseschale durch das Dämpfungsmittel formschlüssig verbunden ist. Dadurch kann eine effektive Dämpfung erreicht werden und es können zusätzliche Elemente zum Stabilisieren der zweiten Gehäuseschale an der ersten Gehäuseschale vorteilhaft eingespart werden. Vorteilhafterweise ist das Dämpfungsmittel als compoundierter Thermoplast ausgebildet, welcher aus einem mit Zusatzmaterialien gemischten Thermoplast besteht. Beispielsweise ist das Dämpfungsmittel als TPE (thermoplastisches Elastomer) ausgebildet.It is also proposed that the first housing shell is positively connected to the second housing shell by the damping means. As a result, an effective damping can be achieved and additional elements for stabilizing the second housing shell on the first housing shell can advantageously be saved. Advantageously, the damping means is formed as a compounded thermoplastic, which consists of a thermoplastic mixed with additional materials. For example, the damping means is designed as TPE (thermoplastic elastomer).
In einer weiteren Ausführungsform der Erfindung wird vorgeschlagen, dass das Dämpfungsmittel im montierten Zustand zumindest weitgehend die zweite Gehäuseschale umgibt, wodurch eine überwiegend homogene Vibrationsdämpfung entlang des Umfangs der Handwerkzeugmaschine erreicht werden kann.In a further embodiment of the invention it is proposed that the damping means in the mounted state at least largely surrounds the second housing shell, whereby a predominantly homogeneous vibration damping along the circumference of the power tool can be achieved.
Ferner wird vorgeschlagen, dass das Dämpfungsmittel als Gehäuseabschnitt ausgebildet ist, welcher eine Gehäuseaußenfläche aufweist. Es können dadurch Material und Bauraum eingespart werden. Ferner kann die Dämpfungsfunktion des Dämpfungsmittels von einem Bediener wahrgenommen werden.It is also proposed that the damping means is designed as a housing section, which has a housing outer surface. It can be saved material and space. Furthermore, the damping function of the damping means can be perceived by an operator.
Weist die Handwerkzeugmaschine ein Haltemittel zur Herstellung eines Formschlusses mit zumindest einer der Gehäuseschalen auf, welches mit dem Dämpfungsmittel stoffschlüssig verbunden ist, kann einer Vibrationsübertragung zwischen den beiden Gehäuseschalen besonders effektiv entgegengewirkt werden.Does the hand tool a holding means for producing a positive connection with at least one of the housing shells, which is materially connected to the damping means, a vibration transmission between the two housing shells can be counteracted particularly effective.
In diesem Zusammenhang kann zusätzlich eine einfache Montage erreicht werden, wenn das Haltemittel ein Befestigungselement aufweist, das zur Herstellung einer Rastverbindung mit zumindest einer der Gehäuseschalen vorgesehen ist.In this context, in addition, a simple assembly can be achieved if the holding means has a fastening element which is provided for producing a latching connection with at least one of the housing shells.
Zweckmäßigerweise weist die Handwerkzeugmaschine ein Sicherungsmittel auf, das dazu vorgesehen ist, eine relative Bewegung der ersten und der zweiten Gehäuseschale bei einem Betrieb zu begrenzen. Dadurch kann eine hohe Sicherheit bei einem Bedienen der Handwerkzeugmaschine erreicht werden. Wenn bei einem Ausfallen des Dämpfungsmittels, z.B. bei dessen Überlastung, Schwingungen der Gehäuseschalen relativ zueinander auftreten, kann die Amplitude dieser Schwingungen begrenzt werden. Bei sehr starken Belastungen kann insbesondere ein Lösen der Gehäuseschalen voneinander durch das Sicherungsmittel verhindert werden. Vorzugsweise ist das Sicherungsmittel als Anschlagelement ausgebildet, welches beim Auftreten großer Schwingungen akustische Warnsignale vorteilhaft übermitteln kann und somit einen Bediener auf einen möglichen Schaden hinweisen kann.Expediently, the handheld power tool has a securing means, which is provided to limit a relative movement of the first and the second housing shell during operation. As a result, a high level of safety can be achieved when operating the handheld power tool. If vibrations of the housing shells relative to one another occur during a failure of the damping means, for example during its overload, the amplitude of these vibrations can be limited. In the case of very heavy loads, it is possible, in particular, to prevent the housing shells from being detached from one another by the securing means. Preferably, the securing means is designed as a stop element, which is advantageous in the occurrence of large vibrations acoustic warning signals can transmit and thus alert an operator to possible damage.
In einer weiteren Ausführungsform der Erfindung wird vorgeschlagen, dass das Dämpfungsmittel im montierten Zustand vorgespannt an einer der Gehäuseschalen anliegt. Dadurch kann ein effektives Abstützen der zweiten Gehäuseschale in einer gewünschten Position, z.B. in einer innerhalb der ersten Gehäuseschale zentrierten Position, erreicht werden, wobei ein Übertragen von Vibrationen besonders effektiv gedämpft werden kann.In a further embodiment of the invention it is proposed that the damping means biased in the assembled state rests against one of the housing shells. Thereby, an effective support of the second housing shell in a desired position, e.g. be achieved in a centered position within the first housing shell, wherein a transmission of vibrations can be attenuated particularly effective.
Vorteilhafterweise weist der Handgriffbereich ein aus einer Weichkomponente hergestelltes Griffmittel auf, das mit dem Dämpfungsmittel direkt verbunden ist. Es kann dadurch bei einem Auflegen einer Hand an den Handgriffbereich ein erhöhter Bedienkomfort erreicht werden.Advantageously, the handle portion has a handle made of a soft component, which is directly connected to the damping means. It can be achieved by placing a hand on the handle area increased ease of use.
Es kann ferner ein geringer Herstellaufwand erzielt werden, weil der Handgriffbereich ein aus einer Weichkomponente hergestelltes Griffmittel aufweist, das einstückig mit dem Dämpfungsmittel ausgeführt ist. Das Griffmittel kann gleichzeitig mit dem Dämpfungsmittel in einem Herstellungsschritt erzeugt werden. Beispielsweise können das Griffmittel und das Dämpfungsmittel gleichzeitig in einem Spritzgang hergestellt werden.It can also be achieved a low manufacturing cost, because the handle portion has a made of a soft component handle means, which is designed in one piece with the damping means. The gripping means can be produced simultaneously with the damping means in a manufacturing step. For example, the grip means and the damping means can be produced simultaneously in one spray pass.
In diesem Zusammenhang kann insbesondere eine kompakte Anordnung der Gehäuseschalen erreicht werden, wenn das Griffmittel an der ersten Gehäuseschale angeordnet ist und zumindest einen Abschnitt aufweist, welcher die erste Gehäuseschale durchdringt und sich als dämpfendes Stützelement zum Stützen der zweiten Gehäuseschale fortsetzt.In this context, in particular, a compact arrangement of the housing shells can be achieved if the gripping means is arranged on the first housing shell and has at least one section which encloses the first housing shell penetrates and continues as a damping support member for supporting the second housing shell.
Es wird ferner eine Handwerkzeugmaschinengehäuseeinheit mit den Merkmalen des Anspruchs 10 vorgeschlagen.A handheld power tool housing unit with the features of
Weitere Vorteile ergeben sich aus der folgenden Zeichnungsbeschreibung. Die Zeichnung, die Beschreibung und die Ansprüche enthalten zahlreiche Merkmale in Kombination. Der Fachmann wird die Merkmale zweckmäßigerweise auch einzeln betrachten und zu sinnvollen weiteren Kombinationen zusammenfassen.Further advantages emerge from the following description of the drawing. The drawing, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations.
Es zeigen:
- Fig. 1
- einen Exzenterschleifer mit einem Außengehäuse und einem Innengehäuse, die über Dämpfungsmittel verbunden sind,
- Fig. 2
- zwei Schalenhälften des Innengehäuses und ein Dämpfungsmittel,
- Fig. 3
- eine Schalenhälfte des Außengehäuses, ein Dämpfungsmittel und einen Zwischenflansch,
- Fig. 4
- das Dämpfungsmittel aus
Figur 3 und einen alternativen Zwischenflansch, der einen Verbindungssteg aufweist, - Fig. 5
- die zusammengebrachten Schalenhälften des Innengehäuses mit Befestigungselementen,
- Fig. 6
- die Schalenhälften aus
Figur 5 , die in einer Schalenhälfte des Außengehäuses montiert sind, - Fig. 7
- den Exzenterschleifer aus
Figur 1 mit einem alternativen Dämpfungsmittel, - Fig. 8
- einen weiteren Exzenterschleifer mit dämpfenden Stützrippen,
- Fig. 9
- ein alternatives Außengehäuse des Exzenterschleifers aus
Figur 8 mit einem Softgrip und Stützrippen und - Figs. 10 und 11
- weitere Exzenterschleifer, jeweils mit einem Außen- und einem Innengehäuse.
- Fig. 1
- an eccentric sander having an outer housing and an inner housing, which are connected via damping means,
- Fig. 2
- two shell halves of the inner housing and a damping means,
- Fig. 3
- a shell half of the outer housing, a damping means and an intermediate flange,
- Fig. 4
- the damping means
FIG. 3 and an alternative intermediate flange having a connecting web, - Fig. 5
- the assembled shell halves of the inner housing with fastening elements,
- Fig. 6
- the shell halves off
FIG. 5 which are mounted in a shell half of the outer housing, - Fig. 7
- the eccentric sander
FIG. 1 with an alternative damping means, - Fig. 8
- another eccentric sander with damping support ribs,
- Fig. 9
- an alternative outer casing of the eccentric grinder
FIG. 8 with a softgrip and support ribs and - Figs. 10 and 11
- further eccentric grinders, each with an outer and an inner housing.
Bei einem Zusammenschrauben der Schalenhälften 12.1, 12.2 werden Schrauben durch Führungselemente 18 der Schalenhälfte 12.1 in als Schraubaufnahmen ausgebildete Befestigungselemente 20 der Schalenhälfte 12.2 hineingeschraubt (siehe
In der Schalenhälfte 16.1 sind Komponenten des Exzenterschleifers 10 montiert, und zwar eine Motoreinheit 32, von der eine Ankerwelle 34, ein Anker 38, ein Stator 40 und ein Kommutator 42 zu erkennen sind, und ein Staublüfter 44. Beidseitig des Kommutators 42 angeordnet sind Halteelemente für Kohlebürsten zu erkennen. Es ist außerdem ein Schleifteller 46 zu sehen, an welchem Schwingbeine 48 befestigt sind. Die Gehäuseschale 16 weist außerdem einen Fortsatz auf, welcher als Anschlusselement 50 ausgebildet ist, an dem ein Staubbehälter 52 zum Aufnehmen von Staub bei einem Betrieb befestigt ist. Die erste Gehäuseschale 12 weist ferner eine Öffnung 54 auf, durch welche ein elektrisches Kabel 56 hindurchgeführt ist.In the shell half 16.1 components of the
Die Gehäuseschalen 12, 16 sind durch Dämpfungsmittel 58, 60 miteinander verbunden. Das Dämpfungsmittel 58, welches aus einem Thermoplast oder Elastomer hergestellt ist, ist in eine Aufnahme 62.1 der Schalenhälfte 12.1 einerseits und in eine Aufnahme 64.1 der Schalenhälfte 16.1 andererseits eingelegt. Im montierten Zustand ist das Dämpfungsmittel 58 ferner in Aufnahmen 62.2 und 64.2 der Schalenhälfte 12.2 bzw. 16.2 eingelegt (siehe
An das Dämpfungsmittel 60 ist ferner ein Haltemittel 68 der Handwerkzeugmaschinengehäuseeinheit angespritzt, welches zur Herstellung eines Formschlusses mit der zweiten Gehäuseschale 16 vorgesehen ist. Das Haltemittel 68 ist als Zwischenflansch ausgebildet, welcher zwei Flanschteile 68.1, 68.2 aufweist (siehe auch
Ferner ist die Handwerkzeugmaschinengehäuseeinheit mit einem Sicherungsmittel 78 versehen. Das Sicherungsmittel 78 ist als ein Anschlagmittel ausgeführt, welches Stege 80.1, 80.2, 82.1, 82.2 der ersten Gehäuseschale 12 und Stege 84.1, 84.2, 86.1, 86.2 der zweiten Gehäuseschale 16 aufweist (siehe auch
In
Bei einer Montage des Exzenterschleifers 10 werden zunächst innere Komponenten, insbesondere die Motoreinheit 32 und der Staublüfter 44, in die Schalenhälfte 16.1 der zweiten Gehäuseschale 16 montiert. Das Dämpfungsmittel 58 bzw. eine Hälfte der unteren Platte 92 wird in die Aufnahme 64.1 eingelegt. Die Schalenhälfte 16.2 wird dann an die Schalenhälfte 16.1 angebracht, wobei die andere Hälfte der unteren Platte 92 des Dämpfungsmittels 58 in die Aufnahme 64.2 eindringt. Zum Zusammenschrauben der Schalenhälften 16.1, 16.2 werden Schrauben durch die Führungselemente 30 hindurch in die Befestigungselemente 31 eingeschraubt. Die zweite Gehäuseschale 16 wird dann als fertige Baugruppe in die Schalenhälfte 12.1 der ersten Gehäuseschale 12 montiert, wobei die Verbindungselemente 74.1, 76.1 in die Führungsnuten 70.1 bzw. 72.1 des Haltemittels 68 eingeführt werden. Hierzu weisen die Verbindungselemente 74.1, 76.1 Öffnungen auf, von denen eine Öffnung 104.1 in
Anhand der
In
In
In
Das Dämpfungsmittel 58, welches, wie oben beschrieben, zur Abstützung der Schalenhälften 16.1, 16.2 in Axialrichtung 88 dient, ist in diesem Ausführungsbeispiel durch ein Zweikomponenten-Spritzgießverfahren in die Schalenhälfte 12.1 der ersten Gehäuseschale 12 eingespritzt. Der Handgriffbereich 14 weist außerdem ein Griffmittel 128 auf, auch "Softgrip" genannt, welches aus einer Weichkomponente hergestellt ist, die in einem Zweikomponenten-Spritzgießverfahren an die erste Gehäuseschale 12 angespritzt ist. Ferner ist an eine Innenfläche 130 der Schalenhälfte 12.1 ein Dämpfungsmittel 132 aus einem elastischen Kunststoff angespritzt. Dieses weist als Stützrippen ausgebildete Stützelemente 134 auf, die an die Innenfläche 130 angebracht sind, und setzt sich am unteren Rand 136 der ersten Gehäuseschale 12 sowie weiter an einer Außenfläche 138 fort. Zur Verankerung des Dämpfungsmittels 132 an dieser Außenfläche 138 ist an das Dämpfungsmittel 132 ein Halteelement 140 angeformt, das in eine Aussparung 142 der Schalenhälfte 12.1 eindringt.The damping means 58, which, as described above, serves to support the shell halves 16.1, 16.2 in the
Bei einer Montage des Exzenterschleifers 126 werden die miteinander verschraubten Schalenhälften 16.1, 16.2 der zweiten Gehäuseschale 16, in die insbesondere die Motoreinheit 32 und der Staublüfter 44 montiert sind, als komplette Baugruppe in die Schalenhälfte 12.1 der ersten Gehäuseschale 12 eingelegt. Dabei wird ein Abschnitt 143 des Dämpfungsmittels 58 in eine Nut 144 der zweiten Gehäuseschale 16 eingeführt. Die zweite Gehäuseschale 16 wird dabei ferner auf die als Stützrippen ausgebildeten Stützelemente 134 des Dämpfungsmittels 132 innerhalb der Schalenhälfte 12.1 aufgelegt, wobei die Gehäuseschale 16 relativ zur Schalenhälfte 12.1 zentriert wird. Die Stützelemente 134 werden dabei leicht komprimiert und liegen nach der Montage an der zweiten Gehäuseschale 16 in einem vorgespannten Zustand an.When mounting the
In
Claims (10)
- Portable power tool having a first housing shell (12, 150, 162), a second housing shell (16, 156, 168), which is different from the first housing shell (12, 150, 162) and is connected to the first housing shell (12, 150, 162) via a damping means (58, 60, 122, 132, 158, 170, 172), and a handle region (14, 152, 164), which is arranged on one of the housing shells (12, 150, 162), wherein the first housing shell (12, 150, 162) at least partially encloses the second housing shell (16, 156, 168), characterized in that the damping means (132) is configured as a housing portion that has a housing outer surface (66, 159), which is embodied as a gripping means (128) in one piece with the damping means (132).
- Portable power tool according to Claim 1, characterized in that the first housing shell (12) is connected to the second housing shell (16) in a form-fitting manner by the damping means (132).
- Portable power tool according to Claim 1 or 2, characterized in that the damping means (132) largely surrounds the second housing shell (16, 156, 168) in the assembled state.
- Portable power tool according to one of the preceding claims, characterized by a retaining means (68) for establishing a form fit with at least one of the housing shells (16), which is connected to the damping means (60) in a materially bonded manner.
- Portable power tool according to Claim 3, characterized in that the retaining means (68) has a fastening element (98.2, 112.1), which is provided to establish a latching connection with at least one of the housing shells (16).
- Portable power tool according to one of the preceding claims, characterized by a securing means (78), which is provided to limit a relative movement of the first and the second housing shell (12, 16) during operation.
- Portable power tool according to one of the preceding claims, characterized in that the damping means (132) bears on one of the housing shells (12, 16) in a preloaded manner in the assembled state.
- Portable power tool according to one of the preceding claims, characterized in that the handle region (14) has a gripping means (128) produced from a soft component, which is embodied in one piece with the damping means (132).
- Portable power tool according to Claim 8, characterized in that the gripping means (128) is arranged on the first housing shell (12) and has at least one portion (145) that passes through the first housing shell (12) and continues as a damping supporting element (134) for supporting the second housing shell (16).
- Portable power tool housing unit having a first housing shell (12, 150, 162), a second housing shell (16, 156, 168), which is different from the first housing shell (12, 150, 162) and is connected to the first housing shell (12, 150, 162) via a damping means (58, 60, 122, 132, 158, 170, 172), and a handle region (14, 152, 164), which is arranged on one of the housing shells (12, 150, 162), wherein the first housing shell (12, 150, 162) at least partially encloses the second housing shell (16, 156, 168), characterized in that the damping means (132) is configured as a housing portion that has a housing outer surface (66, 159), which is embodied as a gripping means (128) in one piece with the damping means (132).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005061870A DE102005061870A1 (en) | 2005-12-23 | 2005-12-23 | Electric-powered hand tool e.g. rotary sanding or polishing tool has two-part housing with one overlapping half linked to the other by vibration dampener |
PCT/EP2006/068447 WO2007073981A1 (en) | 2005-12-23 | 2006-11-14 | Hand machine tool |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1965953A1 EP1965953A1 (en) | 2008-09-10 |
EP1965953B1 true EP1965953B1 (en) | 2019-05-08 |
Family
ID=37801446
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06819466.1A Expired - Fee Related EP1965953B1 (en) | 2005-12-23 | 2006-11-14 | Hand machine tool |
Country Status (5)
Country | Link |
---|---|
US (1) | US7794308B2 (en) |
EP (1) | EP1965953B1 (en) |
CN (1) | CN101346214B (en) |
DE (1) | DE102005061870A1 (en) |
WO (1) | WO2007073981A1 (en) |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102006034078A1 (en) | 2006-06-02 | 2007-12-06 | Robert Bosch Gmbh | Grinding hand tool machine and vibration decoupling device of an abrasive hand tool machine |
DE102008006030A1 (en) * | 2008-01-25 | 2009-07-30 | Robert Bosch Gmbh | Hand tool, in particular electrically operated hand tool |
DE102008000728A1 (en) * | 2008-03-18 | 2009-09-24 | Robert Bosch Gmbh | Hand tool, in particular hand-guided grinding machine |
DE102008000737A1 (en) * | 2008-03-18 | 2009-09-24 | Robert Bosch Gmbh | Hand tool, in particular hand-guided grinding machine |
CN201271828Y (en) * | 2008-09-17 | 2009-07-15 | 南京德朔实业有限公司 | Sander |
DE102009002589A1 (en) * | 2009-04-23 | 2010-10-28 | Hilti Aktiengesellschaft | Hand tool |
DE102009002972A1 (en) * | 2009-05-11 | 2010-11-18 | Robert Bosch Gmbh | Hand tool machine, in particular electric hand tool machine |
DE102009002967A1 (en) * | 2009-05-11 | 2010-11-18 | Robert Bosch Gmbh | Hand tool machine, in particular electric hand tool machine |
US8628380B2 (en) * | 2009-07-14 | 2014-01-14 | Tai-Her Yang | Direct motor-drive portable angle grinder |
DE102010030494A1 (en) * | 2010-06-24 | 2011-12-29 | Robert Bosch Gmbh | Armature shaft bearing unit |
DE102010042452A1 (en) * | 2010-10-14 | 2012-04-19 | Robert Bosch Gmbh | Hand tool |
JP5788782B2 (en) * | 2011-12-21 | 2015-10-07 | 株式会社マキタ | Sanda |
DE102012103604A1 (en) * | 2012-04-24 | 2013-10-24 | C. & E. Fein Gmbh | Handleable machine tool with housing |
CN103372856A (en) * | 2012-04-26 | 2013-10-30 | 苏州宝时得电动工具有限公司 | Swing power tool |
CN103372855A (en) * | 2012-04-26 | 2013-10-30 | 苏州宝时得电动工具有限公司 | Swing power tool |
US9868199B2 (en) * | 2014-01-29 | 2018-01-16 | Black & Decker Inc. | Paddle assembly on a compact sander |
DE102014017892B4 (en) | 2014-12-04 | 2019-03-21 | Wirtgen Gmbh | Self-propelled construction machine and method for operating a self-propelled construction machine |
CN107097184B (en) * | 2016-02-19 | 2021-08-31 | 株式会社牧田 | Working tool |
JP6703417B2 (en) * | 2016-02-19 | 2020-06-03 | 株式会社マキタ | Work tools |
US10632589B2 (en) | 2016-08-29 | 2020-04-28 | Black & Decker Inc. | Power tool |
DE102018206873A1 (en) * | 2018-05-04 | 2019-11-07 | Robert Bosch Gmbh | Tool housing |
CN109176246B (en) * | 2018-09-12 | 2020-09-15 | 东阳市君泰建筑工程有限公司 | Building construction stone material grinding device |
IT201900004275A1 (en) * | 2019-03-25 | 2020-09-25 | Emak Spa | WORK TOOL EQUIPPED WITH A DAMPING ELEMENT |
DE102020210626A1 (en) | 2020-08-20 | 2022-02-24 | Robert Bosch Gesellschaft mit beschränkter Haftung | hand tool |
DE102020213228A1 (en) * | 2020-10-20 | 2022-04-21 | Robert Bosch Gesellschaft mit beschränkter Haftung | Hand grinder and method of assembling a hand grinder |
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US4905772A (en) * | 1988-09-01 | 1990-03-06 | Honsa Thomas W | Rotary power tool with vibration damping |
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US4266376A (en) * | 1979-02-09 | 1981-05-12 | Black & Decker Inc. | Portable electrically energized surface finishing tool |
US4879847A (en) * | 1989-03-13 | 1989-11-14 | Snap-On Tools Corporation | Cover for pneumatic tool |
DE4211316A1 (en) * | 1992-04-04 | 1993-10-07 | Atlas Copco Elektrowerkzeuge | Electrical machine tool housing - has vibration body in clearance between overlapping edges of two sections of housing connecting sections together |
US5769174A (en) * | 1996-12-18 | 1998-06-23 | Ingersoll-Rand Company | Parallel displacement single axis vibration isolator |
DE10242738A1 (en) * | 2002-09-13 | 2005-01-20 | Robert Bosch Gmbh | Hand tool machine, in particular angle grinder |
DE10244793B4 (en) * | 2002-09-26 | 2016-11-10 | Robert Bosch Gmbh | Hand tool housing unit |
DE10254829A1 (en) * | 2002-11-25 | 2004-06-03 | Robert Bosch Gmbh | Electric hand tool |
-
2005
- 2005-12-23 DE DE102005061870A patent/DE102005061870A1/en not_active Withdrawn
-
2006
- 2006-11-14 WO PCT/EP2006/068447 patent/WO2007073981A1/en active Application Filing
- 2006-11-14 US US11/910,800 patent/US7794308B2/en not_active Expired - Fee Related
- 2006-11-14 CN CN2006800488998A patent/CN101346214B/en not_active Expired - Fee Related
- 2006-11-14 EP EP06819466.1A patent/EP1965953B1/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4905772A (en) * | 1988-09-01 | 1990-03-06 | Honsa Thomas W | Rotary power tool with vibration damping |
Also Published As
Publication number | Publication date |
---|---|
US20080153401A1 (en) | 2008-06-26 |
US7794308B2 (en) | 2010-09-14 |
EP1965953A1 (en) | 2008-09-10 |
DE102005061870A1 (en) | 2007-07-05 |
WO2007073981A1 (en) | 2007-07-05 |
CN101346214B (en) | 2012-06-27 |
CN101346214A (en) | 2009-01-14 |
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