EP3822030A1 - Drill and/or chisel hammer with impact device assembly - Google Patents
Drill and/or chisel hammer with impact device assembly Download PDFInfo
- Publication number
- EP3822030A1 EP3822030A1 EP19209441.5A EP19209441A EP3822030A1 EP 3822030 A1 EP3822030 A1 EP 3822030A1 EP 19209441 A EP19209441 A EP 19209441A EP 3822030 A1 EP3822030 A1 EP 3822030A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hammer
- impact
- tool holder
- absorber element
- chisel
- 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.)
- Withdrawn
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D16/00—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
-
- 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
- B25D11/005—Arrangements for adjusting the stroke of the impulse member or for stopping the impact action when the tool is lifted from the working surface
-
- 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
-
- 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
- B25D17/06—Hammer pistons; Anvils ; Guide-sleeves for pistons
-
- 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
- B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2211/00—Details of portable percussive tools with electromotor or other motor drive
- B25D2211/06—Means for driving the impulse member
- B25D2211/068—Crank-actuated impulse-driving mechanisms
-
- 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
- B25D2217/0011—Details of anvils, guide-sleeves or pistons
- B25D2217/0015—Anvils
-
- 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
- B25D2217/0011—Details of anvils, guide-sleeves or pistons
- B25D2217/0019—Guide-sleeves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2222/00—Materials of the tool or the workpiece
- B25D2222/54—Plastics
- B25D2222/57—Elastomers, e.g. rubber
-
- 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
-
- 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
- B25D2250/235—Sleeve couplings
Definitions
- the present invention relates to a hammer drill and / or chisel hammer with a drive motor, an impact mechanism and a tool holder for receiving a tool.
- the striking mechanism has a striker that is axially displaceable in a striker guide and that acts on the tool.
- the hammer mechanism is equipped with an idle shock absorber element and a rebound shock absorber element.
- Rotary hammers of the type mentioned are basically known from the prior art Idle shock absorber elements and rebound shock absorber elements, which are preferably designed as elastomer damping elements, are used to keep force peaks on downstream components and vibrations as low as possible.
- the striker strikes a typically provided impact disc after each impact and is intercepted by the impact shock absorption element.
- a blank impact damping element is typically used to protect the downstream components from a peak force of the blank impact.
- a blank impact damping of the idle impact absorber element influences the return speed of the anvil after a blank impact and thus also the shutdown behavior of the hammer.
- the object is achieved in that the idle impact absorber element and / or the rebound impact absorber element is integrated on the anvil.
- this has the advantage that the anvil, including the idle impact damper element and / or the rebound impact damper element, can be installed in one work step - and thus comparatively inexpensively.
- the idle shock absorber element and the rebound shock absorber element are designed in one piece with one another as a combination damper element.
- an idle sleep dampening and a rebound shock dampening can take place by one and the same component.
- the combi-steamer element is designed as an elastomer.
- the combi-steamer element is vulcanized onto the striker.
- the combi-steamer element can be connected to the anvil by means of a form-fitting connection.
- the combi-steamer element is surrounded by a stop sleeve which is arranged to strike against a blank impact stop surface on the one hand and to strike a rebound impact stop surface on the other.
- the stop sleeve can be spaced apart from the anvil in the radial direction, the elastomer preferably being located in the radial direction between the anvil and the stop sleeve.
- the blank impact stop surface is formed on the tool holder itself.
- the rebound impact stop surface can advantageously be formed on a stop ring encompassed by the tool holder.
- a stop ring on the impact impact side can be dispensed with and the impact impact stop surface can be formed directly on the tool holder.
- the stop ring is supported with respect to the tool holder by an auxiliary rebound shock absorber element.
- the striking mechanism has a guide housing which surrounds the anvil and / or the tool holder at least in sections.
- the tool holder is movable in the axial direction relative to the guide housing and / or is arranged at least in sections within the guide housing.
- the hammer mechanism has an additional idle impact damper element which preferably acts between the tool holder and the guide housing.
- the hammer mechanism can have an additional rebound shock absorber element, which preferably acts between the tool holder and the guide housing.
- An input of force from the tool holder into the unit consisting of the additional idle impact damper element and the additional impact shock absorber element can take place through a pin protruding in the radial direction from the tool holder.
- the pin engages, in relation to the axial direction of the anvil, between the additional idle impact damper element and the additional impact shock absorber element.
- FIG Fig. 1 A preferred embodiment of a hammer drill and / or chisel hammer 100 according to the invention is shown in FIG Fig. 1 shown.
- the hammer drill and / or chisel hammer 100 is equipped with a drive motor 70, a hammer mechanism 10 and a tool holder 50 for receiving a tool 110.
- the hammer mechanism 10 and the drive motor 70 are arranged within a housing 90 of the hammer drill and / or chisel hammer 100.
- the striking mechanism 10 has a striker 30 which can be displaced in an axial direction AR in a striker guide 20 and acts on the tool 110.
- the anvil guide 20 is implemented, for example, by two roller bearings 21, 23, which are each supported against the tool holder 50 both in the radial direction RR and in the axial direction AR.
- the striking mechanism 10 is equipped with an idle shock absorber element 11 and a rebound shock absorber element 13, which according to the invention are integrated on the striker 30. Again Fig. 1 can be removed, the idle impact absorber element 11 and the rebound impact absorber element 13 are formed integrally with one another and thus form a combination damper element 15.
- the combination damper element 15 is designed as an elastomer and is vulcanized onto the striker 30 here, for example.
- the combi-steamer element 15 is surrounded by a stop sleeve 17 which, on the one hand, is used to strike a blank impact stop surface 12 (cf. Figure 2A ) and arranged on the other hand for striking against a bouncing impact stop surface 14 (cf. Figure 2B ) is trained.
- the blank impact stop surface 12 is formed on the tool holder 50 itself.
- the impact impact stop surface 14 is formed on a stop ring 55 encompassed by the tool holder 50.
- the hammer mechanism 10 has a guide housing 80 which surrounds both the anvil 30 and the tool holder 50 at least in sections.
- the tool holder 50 is movable in the axial direction AR relative to the guide housing 80 and is arranged at least in sections within the guide housing 80.
- the hammer mechanism 10 has an additional idle impact damper element 31 which acts between the tool holder 50 and the guide housing 80.
- the hammer mechanism is also equipped with an additional impact shock absorber element 33, which acts between the tool holder 50 and the guide housing 80.
- FIG Fig. 2 A preferred embodiment of a striking mechanism 10 is shown in FIG Fig. 2 shown. It shows Figure 2A at the moment of a blank, ie the Figure 2A The striker shown moves to the left and the stop sleeve 17 surrounding the combi-steamer element 15 is already in contact with the blank impact stop surface 12.
- the blank impact stop surface 12 is formed on the tool holder 50 and is located on the tool 110 (cf. Fig. 1 ) facing side of the stop sleeve.
- FIG 2A again shows the moment of a bounce, ie the Figure 2B
- the striker shown moves to the right and the stop sleeve 17 surrounding the combi-steamer element 15 is already in contact with the bounce stop surface 14.
- the rebound impact stop surface 14 is formed on a stop ring 55 encompassed by the tool holder 50.
- the rebound impact stop surface 14 is located on the tool 110 (cf. Fig. 1 ) facing away from the stop sleeve 17.
- Fig. 2 In contrast to the im Fig. 1 embodiment shown, is in the embodiment of Fig. 2 the stop ring 55 is supported with respect to the tool holder 50 by an auxiliary rebound shock absorber element 57.
- the auxiliary shock absorber element 57 can prevent a shock impact (the anvil in Fig. 2 moves to the right) can also be dampened.
- Fig. 2 can be seen, is the auxiliary impact shock absorber element 57, based on the axial direction AR, between the stop ring 55 and that roller bearing 23 that is located on the tool 110 (cf. Fig. 1 ) facing away from the stop sleeve 17 is located.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
Bohr- und/oder Meisselhammer (100) mit einem Antriebsmotor (70), einem Schlagwerk (10) und einer Werkzeugaufnahme (50) zur Aufnahme eines Werkzeugs (110), wobei das Schlagwerk (10) einen in einer Döpperführung (20) axial verschiebbaren und auf das Werkzeug (110) einwirkenden Döpper (30) aufweist, wobei das Schlagwerk (10) mit einem Leerschlagdämpferelement (11) und einem Prellschlagdämpferelement (13) ausgestattet ist, wobei das Leerschlagdämpferelement (11) und/oder das Prellschlagdämpferelement (13) am Döpper (30) integriert ist.Hammer drill and / or chisel hammer (100) with a drive motor (70), an impact mechanism (10) and a tool holder (50) for receiving a tool (110), the impact mechanism (10) being axially displaceable in an anvil guide (20) and an anvil (30) acting on the tool (110), the hammer mechanism (10) being equipped with an idle impact damper element (11) and a rebound impact damper element (13), the idle impact damper element (11) and / or the rebound impact damper element (13) on the Döpper (30) is integrated.
Description
Die vorliegende Erfindung betrifft einen Bohr- und/oder Meisselhammer mit einem Antriebsmotor, einem Schlagwerk und einer Werkzeugaufnahme zur Aufnahme eines Werkzeugs. Das Schlagwerk weist einen in einer Döpperführung axial verschiebbaren und auf das Werkzeug einwirkenden Döpper auf. Das Schlagwerk ist ausgestattet mit einem Leerschlagdämpferelement und einem Prellschlagdämpferelement.The present invention relates to a hammer drill and / or chisel hammer with a drive motor, an impact mechanism and a tool holder for receiving a tool. The striking mechanism has a striker that is axially displaceable in a striker guide and that acts on the tool. The hammer mechanism is equipped with an idle shock absorber element and a rebound shock absorber element.
Bohrhammer der eingangs genannten Art sind grundsätzlich aus dem Stand der Technik bekannt
Leerschlagdämpferelemente und Prellschlagdämpferelemente, die vorzugsweise als Elastomer-Dämpfelemente ausgebildet sind, werden eingesetzt um Kraftspitzen auf nachgelagerte Bauteile und Vibrationen so gering wie möglich zu halten. Wenn sich das Schlagwerk im Arbeitspunkt befindet, stößt der Döpper nach jedem Schlag auf eine typischerweise vorgesehene Prellschlagscheibe und wird durch das Prellschlagdämpfelement abgefangen.Rotary hammers of the type mentioned are basically known from the prior art
Idle shock absorber elements and rebound shock absorber elements, which are preferably designed as elastomer damping elements, are used to keep force peaks on downstream components and vibrations as low as possible. When the hammer mechanism is at the working point, the striker strikes a typically provided impact disc after each impact and is intercepted by the impact shock absorption element.
Bei einer zu geringen Anpresskraft oder dem Wegbruch von zu bearbeiteten Beton/Stein können Leerschläge auftreten. Dies bedeutet, dass Schläge mit voller Schlagenergie durch den Hammer und insbesondere die Werkzeugaufnahme selber abgefangen werden müssen. Um die nachgelagerten Bauteile vor einer Kraftspitze des Leerschlags zu schützen, kommt typischerweise ein Leerschlagdämpfelement zum Einsatz. Eine Leerschlagdämpfung des Leerschlagdämpferelements beeinflusst die Rückfluggeschwindigkeit des Döppers nach einem Leerschlag und damit auch das Abstellverhalten des Hammers.If the contact pressure is too low or if the concrete / stone to be processed breaks away, blank spaces can occur. This means that blows must be absorbed with full impact energy by the hammer and in particular the tool holder itself. A blank impact damping element is typically used to protect the downstream components from a peak force of the blank impact. A blank impact damping of the idle impact absorber element influences the return speed of the anvil after a blank impact and thus also the shutdown behavior of the hammer.
Es ist Aufgabe der vorliegenden Erfindung einen Bohr- und/oder Meisselhammer bereitzustellen, bei dem das Schlagwerk vergleichsweise einfach aufgebaut und dadurch vergleichsweise kostengünstig ist.It is the object of the present invention to provide a hammer drill and / or chisel hammer in which the hammer mechanism is comparatively simple and therefore comparatively inexpensive.
Die Aufgabe wird dadurch gelöst, dass das Leerschlagdämpferelement und/oder das Prellschlagdämpferelement am Döpper integriert ist. Dies hat zum einen den Vorteil, dass der Döpper samt Leerschlagdämpferelement und/oder Prellschlagdämpferelement in einem Arbeitsschritt - und somit vergleichsweise günstig - montiert werden kann. Zu dem ergibt sich eine vorteilhafte Reduktion der vorzuhaltenden Bauteile, was gleichsam zu einer Kostenreduktion führt.The object is achieved in that the idle impact absorber element and / or the rebound impact absorber element is integrated on the anvil. On the one hand, this has the advantage that the anvil, including the idle impact damper element and / or the rebound impact damper element, can be installed in one work step - and thus comparatively inexpensively. In addition, there is an advantageous reduction in the number of components to be kept available, which at the same time leads to a reduction in costs.
In einer besonders bevorzugten Ausgestaltung sind das Leerschlagdämpferelement und das Prellschlagdämpferelement einteilig miteinander als Kombidämpferelement ausgebildet. Somit kann eine Leerschlafdämpfung und ein Prellschlagdämpfung durch ein und dasselbe Bauteil erfolgen. Es hat sich als vorteilhaft herausgestellt, wenn das Kombidämpferelement als Elastomer ausgebildet ist. In einer besonders bevorzugten Ausgestaltung ist das Kombidämpferelement am Döpper anvulkanisiert. Alternativ oder zusätzlich kann das Kombidämpferelement durch eine formschlüssige Verbindung mit dem Döpper verbunden sein.In a particularly preferred embodiment, the idle shock absorber element and the rebound shock absorber element are designed in one piece with one another as a combination damper element. Thus, an idle sleep dampening and a rebound shock dampening can take place by one and the same component. It has been found to be advantageous if the combi-steamer element is designed as an elastomer. In a particularly preferred embodiment, the combi-steamer element is vulcanized onto the striker. Alternatively or additionally, the combi-steamer element can be connected to the anvil by means of a form-fitting connection.
Es hat sich als vorteilhaft herausgestellt, wenn das Kombidämpferelement von einer Anschlaghülse umgegeben ist, die zum Anschlagen an Leerschlag-Anschlagsfläche einerseits und zum Anschlagen an einer Prellschlag-Anschlagsfläche andererseits angeordnet ist. Die Anschlaghülse kann in radialer Richtung von dem Döpper beabstandet sein, wobei sich das Elastomer vorzugsweise in radialer Richtung zwischen Döpper und Anschlaghülse befindet.It has been found to be advantageous if the combi-steamer element is surrounded by a stop sleeve which is arranged to strike against a blank impact stop surface on the one hand and to strike a rebound impact stop surface on the other. The stop sleeve can be spaced apart from the anvil in the radial direction, the elastomer preferably being located in the radial direction between the anvil and the stop sleeve.
In einer besonders bevorzugten Ausgestaltung ist die Leerschlag-Anschlagsfläche an der Werkzeugaufnahme selbst ausgebildet. Die Prellschlag-Anschlagsfläche kann vorteilhafterweise an einem von der Werkzeugaufnahme umfassten Anschlagring ausgebildet sein. Alternativ kann auf einen prellschagseitigen Anschlagring verzichtet werden und die Prellschlag-Anschlagsfläche direkt an der Werkzeugaufnahme ausgebildet sein.In a particularly preferred embodiment, the blank impact stop surface is formed on the tool holder itself. The rebound impact stop surface can advantageously be formed on a stop ring encompassed by the tool holder. Alternatively, a stop ring on the impact impact side can be dispensed with and the impact impact stop surface can be formed directly on the tool holder.
In einer besonders bevorzugten Ausgestaltung ist der Anschlagring bezüglich der Werkzeugaufnahme durch ein Hilfs-Prellschlagdämpferelement abgestützt.In a particularly preferred embodiment, the stop ring is supported with respect to the tool holder by an auxiliary rebound shock absorber element.
Es hat sich als vorteilhaft herausgestellt, wenn das Schlagwerk ein Führungsgehäuse aufweist, das den Döpper und/oder die Werkzeugaufnahme zumindest abschnittsweise umgreift. In einer besonders bevorzugten Ausgestaltung ist die Werkzeugaufnahme in axialer Richtung relativ zum Führungsgehäuse beweglich und/oder zumindest abschnittsweise innerhalb des Führungsgehäuses angeordnet. In einer weiteren besonders bevorzugten Ausgestaltung weist das Schlagwerk ein Zusatz-Leerschlagdämpferelement auf, das vorzugsweise zwischen der Werkzeugaufnahme und dem Führungsgehäuse wirkt. Das Schlagwerk kann ein Zusatz-Prellschlagdämpferelement aufweisen, das vorzugsweise zwischen Werkzeugaufnahme und dem Führungsgehäuse wirkt. Ein Krafteintrag von der Werkzeugaufnahme in die Einheit aus Zusatz-Leerschlagdämpferelement und Zusatz-Prellschlagdämpferelement kann durch einen in radialer Richtung von der Werkzeugaufnahme abstehenden Zapfen erfolgen. In einer besonders bevorzugten Ausgestaltung greift der Zapfen, bezogen auf die axiale Richtung des Döppers, zwischen Zusatz-Leerschlagdämpferelement und Zusatz-Prellschlagdämpferelement ein.It has been found to be advantageous if the striking mechanism has a guide housing which surrounds the anvil and / or the tool holder at least in sections. In a particularly preferred embodiment, the tool holder is movable in the axial direction relative to the guide housing and / or is arranged at least in sections within the guide housing. In a further particularly preferred embodiment, the hammer mechanism has an additional idle impact damper element which preferably acts between the tool holder and the guide housing. The hammer mechanism can have an additional rebound shock absorber element, which preferably acts between the tool holder and the guide housing. An input of force from the tool holder into the unit consisting of the additional idle impact damper element and the additional impact shock absorber element can take place through a pin protruding in the radial direction from the tool holder. In a particularly preferred embodiment, the pin engages, in relation to the axial direction of the anvil, between the additional idle impact damper element and the additional impact shock absorber element.
Durch ein Zusammenwirken von Zusatz-Leerschlagdämpferelement und Zusatz-Prellschlagdämpferelement kann eine schwindende Lagerung der Werkzeugaufnahme erreicht werden, wodurch bereits ein nicht unerheblicher Anteil der Schlagenergie des Döppers ausgeschwungen werden kann.The interaction of the additional idle impact absorber element and additional rebound impact absorber element makes it possible to achieve a shrinking mounting of the tool holder, whereby a not inconsiderable proportion of the impact energy of the anvil can be swung out.
Weitere Vorteile ergeben sich aus der folgenden Figurenbeschreibung. In den Figuren sind verschiedene Ausführungsbeispiele der vorliegenden Erfindung dargestellt. Die Figuren, 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 figures. Various exemplary embodiments of the present invention are shown in the figures. The figures, 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.
In den Figuren sind gleiche und gleichartige Komponenten mit gleichen Bezugszeichen beziffert. Es zeigen:
- Fig. 1
- ein bevorzugtes Ausführungsbeispiel eines erfindungsgemäßen Bohr- und/oder Meisselhammers; und
- Fig. 2
- ein bevorzugtes Ausführungsbeispiel eines Schlagwerks in zwei Zuständen.
- Fig. 1
- a preferred embodiment of a hammer drill and / or chisel hammer according to the invention; and
- Fig. 2
- a preferred embodiment of a striking mechanism in two states.
Ein bevorzugtes Ausführungsbeispiel eines erfindungsgemäßen Bohr- und/oder Meisselhammers 100 ist in
Das Schlagwerk 10 weist einen in einer Döpperführung 20 in axialer Richtung AR verschiebbaren und auf das Werkzeug 110 einwirkenden Döpper 30 auf. Die Döpperführung 20 ist beispielhaft durch zwei Wälzlager 21, 23 realisiert, die jeweils sowohl in radialer Richtung RR als auch in axialer Richtung AR gegen die Werkzeugaufnahme 50 abgestützt sind.The
Das Schlagwerk 10 ist ausgestattet mit einem Leerschlagdämpferelement 11 und einem Prellschlagdämpferelement 13, die erfindungsgemäß am Döpper 30 integriert sind. Wie der
Wie ebenfalls der
Ein bevorzugtes Ausführungsbeispiel eines Schlagwerks 10 ist in
Im Unterschied zu dem im
- 1010
- SchlagwerkPercussion
- 1111
- LeerschlagdämpferelementIdle shock absorber element
- 1212th
- Leerschlag-AnschlagsflächeSpace stroke stop surface
- 1313th
- PrellschlagdämpferelementShock absorber element
- 1414th
- Prellschlag-AnschlagsflächeImpact stop surface
- 1515th
- KombidämpferelementCombi-steamer element
- 1717th
- AnschlaghülseStop sleeve
- 2020th
- DöpperführungStopper guide
- 21, 2321, 23
- Wälzlagerroller bearing
- 3030th
- DöpperDöpper
- 3131
- Zusatz-LeerschlagdämpferelementAdditional empty shock absorber element
- 3333
- Zusatz-PrellschlagdämpferelementAdditional shock absorber element
- 5050
- WerkzeugaufnahmeTool holder
- 5151
- ZapfenCones
- 5555
- AnschlagringStop ring
- 5757
- Hilfs-PrellschlagdämpferelementAuxiliary shock absorber element
- 7070
- AntriebsmotorDrive motor
- 8080
- FührungsgehäuseGuide housing
- 9090
- Gehäusecasing
- 100100
- Bohr- und/oder MeisselhammerHammer drill and / or chisel hammer
- 110110
- WerkzeugTool
- ARAR
- axiale Richtungaxial direction
- RRRR
- radiale Richtungradial direction
Claims (10)
dadurch gekennzeichnet, dass das Leerschlagdämpferelement (11) und/oder das Prellschlagdämpferelement (13) am Döpper (30) integriert ist.Hammer drill and / or chisel hammer (100) with a drive motor (70), an impact mechanism (10) and a tool holder (50) for receiving a tool (110), the impact mechanism (10) being axially displaceable in an anvil guide (20) and has an anvil (30) acting on the tool (110), the hammer mechanism (10) being equipped with an idle impact absorber element (11) and a rebound impact absorber element (13),
characterized in that the idle impact absorber element (11) and / or the rebound impact absorber element (13) is integrated on the anvil (30).
dadurch gekennzeichnet, dass das Leerschlagdämpferelement (11) und das Prellschlagdämpferelement (13) einteilig miteinander ausgebildet sind und derart ein Kombidämpferelement (15) bilden.Hammer drill and / or chisel hammer (100) according to Claim 1,
characterized in that the idle impact absorber element (11) and the rebound impact absorber element (13) are formed integrally with one another and thus form a combination damper element (15).
dadurch gekennzeichnet, dass das Kombidämpferelement (15) als Elastomer ausgebildet ist und vorzugsweise am Döpper (30) anvulkanisiert ist.Hammer drill and / or chisel hammer (100) according to Claim 2,
characterized in that the combi-steamer element (15) is designed as an elastomer and is preferably vulcanized onto the anvil (30).
dadurch gekennzeichnet, dass das Kombidämpferelement (15) von einer Anschlaghülse (17) umgegeben ist, die zum Anschlagen an eine Leerschlag-Anschlagsfläche (12) einerseits und zum Anschlagen an eine Prellschlag-Anschlagsfläche (14) andererseits angeordnet ist.Hammer drill and / or chisel hammer (100) according to Claim 2 or 3,
characterized in that the combi-damper element (15) is surrounded by a stop sleeve (17) which is arranged to strike a blank impact stop surface (12) on the one hand and to strike a rebound impact stop surface (14) on the other hand.
dadurch gekennzeichnet, dass die Leerschlag-Anschlagsfläche (12) an der Werkzeugaufnahme (50) selbst ausgebildet ist und/oder die Prellschlag-Anschlagsfläche (14) an einem von der Werkzeugaufnahme (50) umfassten Anschlagring (55) ausgebildet ist.Hammer drill and / or chisel hammer (100) according to Claim 4,
characterized in that the idle impact stop surface (12) is formed on the tool holder (50) itself and / or the rebound impact stop surface (14) is formed on a stop ring (55) encompassed by the tool holder (50).
dadurch gekennzeichnet, dass der Anschlagring (55) bezüglich der Werkzeugaufnahme durch ein Hilfs-Prellschlagdämpferelement (57) abgestützt ist.Hammer drill and / or chisel hammer (100) according to Claim 5,
characterized in that the stop ring (55) is supported with respect to the tool holder by an auxiliary rebound shock absorber element (57).
dadurch gekennzeichnet, dass die Werkzeugaufnahme (50) in axialer Richtung (AR) relativ zum Führungsgehäuse (80) beweglich und/oder zumindest abschnittsweise innerhalb des Führungsgehäuses (80) angeordnet ist.Hammer drill and / or chisel hammer (100) according to Claim 7,
characterized in that the tool holder (50) is movable in the axial direction (AR) relative to the guide housing (80) and / or is arranged at least in sections within the guide housing (80).
dadurch gekennzeichnet, dass das Schlagwerk (10) ein Zusatz-Leerschlagdämpferelement (31) aufweist, das zwischen der Werkzeugaufnahme (50) und dem Führungsgehäuse (80) wirkt.Hammer drill and / or chisel hammer (100) according to Claim 8,
characterized in that the hammer mechanism (10) has an additional idle impact damper element (31) which acts between the tool holder (50) and the guide housing (80).
dadurch gekennzeichnet, dass das Schlagwerk ein Zusatz-Prellschlagdämpferelement aufweist (33), das zwischen Werkzeugaufnahme (50) und dem Führungsgehäuse (80) wirkt.Hammer drill and / or chisel hammer (100) according to claim 8 or 9,
characterized in that the hammer mechanism has an additional impact shock absorber element (33) which acts between the tool holder (50) and the guide housing (80).
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19209441.5A EP3822030A1 (en) | 2019-11-15 | 2019-11-15 | Drill and/or chisel hammer with impact device assembly |
EP20800186.7A EP4058245A1 (en) | 2019-11-15 | 2020-11-06 | Striking mechanism assembly |
PCT/EP2020/081266 WO2021094213A1 (en) | 2019-11-15 | 2020-11-06 | Striking mechanism assembly |
US17/771,799 US20220388137A1 (en) | 2019-11-15 | 2020-11-06 | Impact mechanism arrangement |
CN202080067926.6A CN114450128A (en) | 2019-11-15 | 2020-11-06 | Impact mechanism arrangement |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19209441.5A EP3822030A1 (en) | 2019-11-15 | 2019-11-15 | Drill and/or chisel hammer with impact device assembly |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3822030A1 true EP3822030A1 (en) | 2021-05-19 |
Family
ID=68583194
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19209441.5A Withdrawn EP3822030A1 (en) | 2019-11-15 | 2019-11-15 | Drill and/or chisel hammer with impact device assembly |
EP20800186.7A Pending EP4058245A1 (en) | 2019-11-15 | 2020-11-06 | Striking mechanism assembly |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20800186.7A Pending EP4058245A1 (en) | 2019-11-15 | 2020-11-06 | Striking mechanism assembly |
Country Status (4)
Country | Link |
---|---|
US (1) | US20220388137A1 (en) |
EP (2) | EP3822030A1 (en) |
CN (1) | CN114450128A (en) |
WO (1) | WO2021094213A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20240123589A1 (en) * | 2019-11-12 | 2024-04-18 | Hilti Aktiengesellschaft | Impact mechanism arrangement |
EP3822037A1 (en) | 2019-11-15 | 2021-05-19 | Hilti Aktiengesellschaft | Impact device assembly |
DE102021203064A1 (en) * | 2021-03-26 | 2022-09-29 | Robert Bosch Gesellschaft mit beschränkter Haftung | Hand tool machine with a locking device |
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DE3633675A1 (en) * | 1986-10-03 | 1988-04-14 | Hilti Ag | DRILLING HAMMER WITH STRIKE |
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2019
- 2019-11-15 EP EP19209441.5A patent/EP3822030A1/en not_active Withdrawn
-
2020
- 2020-11-06 EP EP20800186.7A patent/EP4058245A1/en active Pending
- 2020-11-06 CN CN202080067926.6A patent/CN114450128A/en active Pending
- 2020-11-06 WO PCT/EP2020/081266 patent/WO2021094213A1/en unknown
- 2020-11-06 US US17/771,799 patent/US20220388137A1/en active Pending
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EP0663270A1 (en) * | 1994-01-13 | 1995-07-19 | Friedrich Duss Maschinenfabrik Gmbh & Co. | Impact hammer with rotative and/or percussive action |
US20080217040A1 (en) * | 2007-03-07 | 2008-09-11 | Alexander Loeffler | Hand-held power tool with pneumatic percussion mechanism |
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Also Published As
Publication number | Publication date |
---|---|
CN114450128A (en) | 2022-05-06 |
US20220388137A1 (en) | 2022-12-08 |
EP4058245A1 (en) | 2022-09-21 |
WO2021094213A1 (en) | 2021-05-20 |
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