EP0771620A1 - Drilling and chiseling tool - Google Patents

Drilling and chiseling tool Download PDF

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Publication number
EP0771620A1
EP0771620A1 EP96810426A EP96810426A EP0771620A1 EP 0771620 A1 EP0771620 A1 EP 0771620A1 EP 96810426 A EP96810426 A EP 96810426A EP 96810426 A EP96810426 A EP 96810426A EP 0771620 A1 EP0771620 A1 EP 0771620A1
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EP
European Patent Office
Prior art keywords
drilling
bearing
intermediate shaft
housing
gear housing
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Granted
Application number
EP96810426A
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German (de)
French (fr)
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EP0771620B1 (en
Inventor
Josef Fünfer
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Hilti AG
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Hilti AG
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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

Definitions

  • the invention relates to a drilling and / or chisel device in which an impact mechanism and an intermediate shaft are mounted axially parallel.
  • a drilling and chiseling device with a housing which is composed of a gear housing on the drilling direction side and a motor housing opposite the drilling direction.
  • a bearing point is arranged on the inner contour of the gear housing in two opposite areas. One of these bearing points serves to receive a bearing area of the striking mechanism opposite to the drilling direction, and the second bearing point is connected to a bearing area of an intermediate shaft belonging to a wobble mechanism facing the drilling direction.
  • the housing of the drilling and chiseling device is composed of two housing halves which can be divided parallel to the longitudinal extent of the drilling and chiseling device and which can be connected to one another by means of screws.
  • the two bearing points are formed by bearing shells arranged in pairs, which are connected in one piece to the housing halves.
  • the inner contour of these bearing shells is matched to the outer contour of the bearing areas of the striking mechanism and the intermediate shaft.
  • the housing halves of the entire housing must be separated from one another so that the interior of the gear housing is freely accessible.
  • the invention has for its object to provide a drilling and / or chisel device with striking mechanism and intermediate shaft arranged parallel to the axis, which is extremely easy to assemble and economical to manufacture.
  • the object is achieved in that a bearing plate serving to support the striking mechanism and the intermediate shaft is detachably connected to the gear housing.
  • the striking mechanism and the intermediate shaft can be preassembled as an assembly and inserted into a one-piece gear housing that is open at both free ends.
  • the gear housing is open at both free ends, and the opening opposite the drilling direction can be larger than the opening facing the drilling direction, so that the assembly can be inserted into the interior of the gear housing through the larger opening.
  • the striking mechanism and the intermediate shaft are arranged such that they are offset in the longitudinal direction from one another in such a way that the striking mechanism faces the drilling direction.
  • Free end of the intermediate shaft and the intermediate shaft protrudes beyond the free end of the striking mechanism opposite the drilling direction, the end shield expediently forms a bearing point for a bearing region of the striking mechanism opposite the drilling direction and a bearing point for a bearing region of the intermediate shaft facing the drilling direction.
  • the bearing points of the end shield are thus formed by two through openings arranged one above the other and running parallel to one another.
  • the bearing plate is advantageously connected to the gear housing by means of at least one screw connection. This enables quick and economical fixing and dismantling of the end shield inside the gear housing.
  • heat is generated in the bearing areas of the striking mechanism and the intermediate shaft, which is preferably dissipated unhindered to the gear housing.
  • heat dissipation is achieved with a bearing plate, which is expediently made of metal.
  • the drilling and chiseling device shown schematically in FIGS. 1 and 2 has a housing 1 with a handle 6 in an end region of the housing 1 opposite the drilling direction, an actuating switch 7 arranged in the handle 6, an electric cable 9 protruding from the handle 6 and a tool holder 10 in an end region of the housing 1 facing the drilling direction, in which a drilling or chiseling tool, not shown, can be used.
  • the housing 1 is composed of a gear housing 2 which adjoins the tool holder 10 counter to the drilling direction and a motor housing 3 which is connected to the gear housing 2.
  • An electric drive motor 4 is arranged in the motor housing 3 and can be switched on with the actuation switch 7.
  • the drive motor 4 shown in FIG. 2 has a drive shaft 5 which projects through an intermediate wall 11, which is arranged between the motor housing 3 and the gear housing 2 and belongs to the motor housing 3, and is supported on the intermediate wall 11 via a bearing 12.
  • a toothing 8 arranged on the drive shaft 5 interacts positively with a drive pinion 13 of a wobble mechanism 14.
  • the wobble mechanism 14 is composed of an intermediate shaft 15 designed as a wobble shaft and a swash plate 17 having a wobble pin 16.
  • This swash plate 17 is rotatably supported in the circumferential direction via balls 18 with respect to the intermediate shaft 15.
  • the balls 18 are located in circumferential grooves 19, 20, which are inclined to the longitudinal axis of the intermediate shaft 15, which are arranged both on the outer contour of the intermediate shaft 15 and on the inner contour of a through hole in the swash plate 17.
  • the intermediate shaft 15 has a running groove 19 and a drive pinion 13 which interacts with the drive shaft 5 of the drive motor 4.
  • the intermediate shaft 15 also has a first bearing region 21, which adjoins the drive pinion 13 and is in the form of a bearing pin, which projects into a bearing bush 22 arranged in the intermediate wall 11.
  • An output pinion 23 is arranged on a free end of the intermediate shaft 15 facing the drilling direction and cooperates positively with a pinion 25 that is non-rotatably connected to a tool spindle 24.
  • a second bearing region 26 is arranged between the raceway 19 and the driven pinion 23 of the intermediate shaft 15 and is supported on a bearing plate 28 via a ball bearing 27.
  • the bearing plate 28 arranged in the gear housing 2 has two bearing points 29, 30 in the form of passage openings.
  • the ball bearing 27 is axially fixed in a first bearing 29 of the end shield 28.
  • the second bearing point 30 serves to receive and support a bearing area of the striking mechanism 31 opposite the drilling direction, or a tubular spindle-shaped tool spindle 24 surrounding the striking mechanism 31.
  • This tool spindle 24 is opposite the end shield 28 or opposite one at the second bearing point 30 arranged slide bearing 33 and rotatable relative to the striking mechanism 31.
  • the striking mechanism 31 is composed of a cylinder 34 and an impact piston 35 which can be axially displaced in the cylinder 34.
  • the cylinder 34 is closed in an end region opposite the drilling direction.
  • a movement joint 36 is arranged with a pivot pin 37, which has a bore running perpendicular to the longitudinal extent of the pivot pin 37.
  • the wobble pin 16 of the swash plate 17 engages in this bore in a longitudinally displaceable manner. Via the movement joint 36 and the pivot pin 37, the cylinder 34 is secured against rotation with the wobble pin 16.
  • the gear housing 2 has an opening on the drilling direction side and an opening opposite the drilling direction, the opening opposite the drilling direction being larger than the opening on the drilling direction side.
  • the outer contour of the end shield 28 is essentially matched to the larger opening.
  • the tool spindle 24, the striking mechanism 31, the intermediate shaft 15 and the end shield 28 can be assembled to form an assembly and can be inserted into the gear housing 2 when the drilling and / or chiseling device is installed.
  • a bearing point, not shown, in the area of the transmission housing 2 on the direction of the drilling direction accommodates the end region of the tool spindle 32 on the direction of the drilling direction.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Earth Drilling (AREA)

Abstract

The equipment has a striking mechanism (31) and an intermediate shaft (15) which are mounted with parallel axes in a gearbox housing (2). A bearing plate (28) acts as the seating for the mechanism and the shaft, and is connected to the housing so that it is able to be detached. The plate may form a seating position (30) for a bearing region of the mechanism which opposes the direction of drilling. It may also form a seating position (29) for a bearing region (26) of the intermediate shaft which faces towards the direction of drilling.

Description

Die Erfindung betrifft ein Bohr- und/oder Meisselgergät in dem ein Schlagwerk und eine Zwischenwelle achsparallel gelagert sind.The invention relates to a drilling and / or chisel device in which an impact mechanism and an intermediate shaft are mounted axially parallel.

Aus der DE-OS 35 06 695 ist ein Bohr- und Meisselgerät mit einem Gehäuse bekannt, das sich aus einem bohrrichtungsseitigen Getriebegehäuse und einem der Bohrrichtung entgegengesetzten Motorgehäuse zusammensetzt. An der Innenkontur des Getriebegehäuses ist an zwei einander gegenüberliegenden Bereichen jeweils eine Lagerstelle angeordnet. Eine dieser Lagerstellen dient der Aufnahme eines der Bohrrichtung entgegengesetzten Lagerbereiches des Schlagwerkes und die zweite Lagerstelle steht mit einem der Bohrrichtung zugewandten Lagerbereich einer zu einem Taumelgetriebe gehörenden Zwischenwelle in Verbindung.From DE-OS 35 06 695 a drilling and chiseling device with a housing is known which is composed of a gear housing on the drilling direction side and a motor housing opposite the drilling direction. A bearing point is arranged on the inner contour of the gear housing in two opposite areas. One of these bearing points serves to receive a bearing area of the striking mechanism opposite to the drilling direction, and the second bearing point is connected to a bearing area of an intermediate shaft belonging to a wobble mechanism facing the drilling direction.

Das Gehäuse des Bohr- und Meisselgerätes setzt sich aus zwei, parallel zur Längserstreckung des Bohr- und Meisselgerätes teilbaren, mittels Schrauben miteinander verbindbaren Gehäusehälften zusammen. Die beiden Lagerstellen sind von paarweise zueinander angeordneten Lagerschalen gebildet, die einstückig mit den Gehäusehällten in Verbindung stehen. Die Innenkontur dieser Lagerschalen ist auf die Aussenkontur der Lagerbereiche des Schlagwerkes und der Zwischenwelle abgestimmt.The housing of the drilling and chiseling device is composed of two housing halves which can be divided parallel to the longitudinal extent of the drilling and chiseling device and which can be connected to one another by means of screws. The two bearing points are formed by bearing shells arranged in pairs, which are connected in one piece to the housing halves. The inner contour of these bearing shells is matched to the outer contour of the bearing areas of the striking mechanism and the intermediate shaft.

Um das Schlagwerk und die Zwischenwelle in das Getriebegehäuse einbauen zu können, müssen die Gehäusehälften des gesamten Gehäuses voneinander getrennt werden, so dass das Innere des Getriebegehäuses frei zugänglich ist.In order to be able to install the striking mechanism and the intermediate shaft in the gear housing, the housing halves of the entire housing must be separated from one another so that the interior of the gear housing is freely accessible.

Die Herstellung der beiden Gehäusehälften mit den daran angeordneten Lagerschalen ist nicht wirtschaftlich durchführbar, da einerseits teure Abspritzwerkzeuge benötigt werden, andererseits beide Gehäusehälften getrennt voneinander abgespritzt werden müssen. Damit die Gehäusehälften bei der Montage zusammenpassen, müssen diese entprechend genau gefertigt sein.The production of the two housing halves with the bearing shells arranged thereon cannot be carried out economically, since on the one hand expensive injection molding tools are required and on the other hand both housing halves have to be hosed separately from one another. In order for the housing halves to fit together during assembly, they have to be manufactured accordingly.

Die Montage dieses bekannten Bohr- und Meisselgerätes ist sehr zeitintensiv. da das Einsetzen der Einzelteile in eine Gehäusehälfte, das Zusammensetzen beider Gehäusehälften und das Eindrehen der, beide Gehäusehälften miteinander verbindenden Schrauben sehr viel Zeit in Anspruch nimmt.The assembly of this well-known drilling and chiseling device is very time-consuming. since the insertion of the individual parts into one housing half, the assembly of both housing halves and the screwing in of the screws connecting the two housing halves with one another takes a very long time.

Der Erfindung liegt die Aufgabe zugrunde, ein Bohr- und/oder Meisselgerät mit Schlagwerk und achsparallel dazu angeordneter Zwischenwelle zu schaffen, das ausserordent-lich montagefreundlich aufgebaut und wirtschaftlich herstellbar ist.The invention has for its object to provide a drilling and / or chisel device with striking mechanism and intermediate shaft arranged parallel to the axis, which is extremely easy to assemble and economical to manufacture.

Erfindungsgemäss wird die Aufgabe dadurch gelöst, dass mit dem Getriebegehäuse ein der Lagerung des Schlagwerkes und der Zwischenwelle dienender Lagerschild lösbar verbunden ist.According to the invention, the object is achieved in that a bearing plate serving to support the striking mechanism and the intermediate shaft is detachably connected to the gear housing.

Zusammen mit dem Lagerschild kann das Schlagwerk und die Zwischenwelle als Baugruppe vormontiert und in ein einstückig ausgebildetes Getriebegehäuse, das an beiden freien Enden offen ausgebildet ist, eingesetzt werden. Das Getriebegehäuse ist an beiden freien Enden offen ausgebildet, wobei die der Bohrrichtung entgegengesetzte Öffnung grösser sein kann als die der Bohrrichtung zugewandte Öffnung, so dass das Einsetzen der Baugruppe in das Innere des Getriebegehäuses durch die grössere Öffnung möglich ist.Together with the end shield, the striking mechanism and the intermediate shaft can be preassembled as an assembly and inserted into a one-piece gear housing that is open at both free ends. The gear housing is open at both free ends, and the opening opposite the drilling direction can be larger than the opening facing the drilling direction, so that the assembly can be inserted into the interior of the gear housing through the larger opening.

Sind beispielsweise das Schlagwerk und die Zwischenwelle in Längsrichtung derart zueinander versetzt angeordnet, dass das Schlagwerk das der Bohrrichtug zugewandte. freie Ende der Zwischenwelle und die Zwischenwelle das der Bohrrichtung entgegengesetzte, freie Ende des Schlagwerkes überragt, bildet der Lagerschild zweckmässiger-weise eine Lagerstelle für einen der Bohrrichtung entgegengesetzten Lagerbereich des Schlagwerkes und eine Lagerstelle für einen der Bohrrichtung zugewandten Lagerbereich der Zwischenwelle. Die Lagerstellen des Lagerschilds werden so von zwei übereinander angeordneten, parallel zueinander verlaufenden Durchtrittsöffnungen gebildet.For example, the striking mechanism and the intermediate shaft are arranged such that they are offset in the longitudinal direction from one another in such a way that the striking mechanism faces the drilling direction. Free end of the intermediate shaft and the intermediate shaft protrudes beyond the free end of the striking mechanism opposite the drilling direction, the end shield expediently forms a bearing point for a bearing region of the striking mechanism opposite the drilling direction and a bearing point for a bearing region of the intermediate shaft facing the drilling direction. The bearing points of the end shield are thus formed by two through openings arranged one above the other and running parallel to one another.

Vorteilhafterweise ist der Lagerschild mittels wenigstens einer Schraubverbindung mit dem Getriebegehäuse verbunden ist. Dadurch wird eine schnelle und wirtschaftliche Festlegung und Demontage des Lagerschilds im Innem des Getriebegehäuses ermöglicht.The bearing plate is advantageously connected to the gear housing by means of at least one screw connection. This enables quick and economical fixing and dismantling of the end shield inside the gear housing.

Während eines Bearbeitungsvorganges mit dem Bohr- und Meisselgerät entsteht in den Lagerbereichen des Schlagwerkes und der Zwischenwelle Wärme, die vorzugsweise ungehindert zum Getriebegehäuse abgeleitet wird. Eine solche Wärmeableitung wird mit einem Lagerschild erreicht, der zweckmässigerweise aus Metall gebildet ist.During a machining process with the drilling and chiseling device, heat is generated in the bearing areas of the striking mechanism and the intermediate shaft, which is preferably dissipated unhindered to the gear housing. Such heat dissipation is achieved with a bearing plate, which is expediently made of metal.

Die Erfindung wird anhand von Zeichnungen, die ein Ausführungsbeispiel wiedergeben, näher erläutert. Es zeigen:

Fig. 1
ein erfindungsgemässes Bohr- und Meisselgerät, schematisch dargestellt;
Fig. 2
das Getriebegehäuse und das Motorgehäuse des Bohr- und Meisselgerätes gemäss Fig. 1, teilweise geschnitten.
The invention is explained in more detail with reference to drawings which show an exemplary embodiment. Show it:
Fig. 1
an inventive drilling and chiseling device, shown schematically;
Fig. 2
the gear housing and the motor housing of the drilling and chiseling device according to FIG. 1, partially cut.

Das in den Fig. 1 und 2 schematisch dargestellte Bohr- und Meisselgerät weist ein Gehäuse 1 mit einem Handgriff 6 in einem der Bohrrichtung entgegengesetzten Endbereich des Gehäuses 1, einen im Handgriff 6 angeordneten Betätigungsschalter 7, ein vom Handgriff 6 abragendes Elektrokabel 9 und einen Werkzeughalter 10 in einem der Bohrrichtung zugewandten Endbereich des Gehäuses 1 auf, in dem ein nicht dargestelltes Bohr- oder Meisselwerkzeug einsetzbar ist. Das Gehäuse 1 setzt sich aus einem entgegen der Bohrrichtung an den Werkzeughalter 10 anschliessenden Getriebegehäuse 2 und einem mit dem Getriebegehäuse 2 verbundenen Motorgehäuse 3 zusammen. In dem Motorgehäuse 3 ist ein elektrischer Antriebsmotor 4 angeordnet, der mit dem Betätigungsschalter 7 einschaltbar ist.The drilling and chiseling device shown schematically in FIGS. 1 and 2 has a housing 1 with a handle 6 in an end region of the housing 1 opposite the drilling direction, an actuating switch 7 arranged in the handle 6, an electric cable 9 protruding from the handle 6 and a tool holder 10 in an end region of the housing 1 facing the drilling direction, in which a drilling or chiseling tool, not shown, can be used. The housing 1 is composed of a gear housing 2 which adjoins the tool holder 10 counter to the drilling direction and a motor housing 3 which is connected to the gear housing 2. An electric drive motor 4 is arranged in the motor housing 3 and can be switched on with the actuation switch 7.

Der in Fig. 2 dargestellte Antriebsmotor 4 weist eine Antriebswelle 5 auf, die durch eine zwischen dem Motorgehäuse 3 und dem Getriebegehäuse 2 angeordnete, zum Motorgehäuse 3 gehörende Zwischenwand 11 ragt und sich über ein Lager 12 an der Zwischenwand 11 abstützt. Eine an der Antriebswelle 5 angeordnete Verzahnung 8 wirkt formschlüssig mit einem Antriebsritzel 13 eines Taumelgetriebes 14 zusammen.The drive motor 4 shown in FIG. 2 has a drive shaft 5 which projects through an intermediate wall 11, which is arranged between the motor housing 3 and the gear housing 2 and belongs to the motor housing 3, and is supported on the intermediate wall 11 via a bearing 12. A toothing 8 arranged on the drive shaft 5 interacts positively with a drive pinion 13 of a wobble mechanism 14.

Das Taumelgetriebe 14 setzt sich aus einer als Taumelwelle ausgebildeten Zwischenwelle 15 und einer, einen Taumelzapfen 16 aufweisenden Taumelscheibe 17 zusammen. Diese Taumelscheibe 17 ist über Kugeln 18 gegenüber der Zwischenwelle 15 in Umfangsrichtung drehbar gelagert. Die Kugeln 18 befinden sich in geneigt zur Längsachse der Zwischenwelle 15 verlaufenden, umlaufend ausgebildeten Laufrillen 19, 20, die sowohl an der Aussenkontur der Zwischenwelle 15, als auch an der Innenkontur einer Durchgangsbohrung der Taumelscheibe 17 angeordnet sind. Die Zwischenwelle 15 weist eine Laufrille 19 und ein mit der Antriebswelle 5 des Antriebsmotors 4 zusammenwirkendes Antriebsritzel 13 auf. An einem der Bohrichtung entgegengesetzten, freien Ende besitzt die Zwischenwelle 15 ausserdem einen, sich an das Antriebsritzel 13 anschliessenden ersten Lagerbereich 21 in Form eines Lagerzapfens, der in eine in der Zwischenwand 11 angeordnete Lagerbuchse 22 ragt.The wobble mechanism 14 is composed of an intermediate shaft 15 designed as a wobble shaft and a swash plate 17 having a wobble pin 16. This swash plate 17 is rotatably supported in the circumferential direction via balls 18 with respect to the intermediate shaft 15. The balls 18 are located in circumferential grooves 19, 20, which are inclined to the longitudinal axis of the intermediate shaft 15, which are arranged both on the outer contour of the intermediate shaft 15 and on the inner contour of a through hole in the swash plate 17. The intermediate shaft 15 has a running groove 19 and a drive pinion 13 which interacts with the drive shaft 5 of the drive motor 4. At a free end opposite the drilling direction, the intermediate shaft 15 also has a first bearing region 21, which adjoins the drive pinion 13 and is in the form of a bearing pin, which projects into a bearing bush 22 arranged in the intermediate wall 11.

An einem der Bohrrichtung zugewandten, freien Ende der Zwischenwelle 15 ist ein Abtriebsritzel 23 angeordnet, das mit einem drehfest mit einer Werkzeugspindel 24 verbundenen Ritzel 25 formschlüssig zusammenwirkt. Zwischen der Laufrille 19 und dem Abtriebsritzel 23 der Zwischenwelle 15 ist ein zweiter Lagerbereich 26 angeordnet, der sich über ein Kugellager 27 an einem Lagerschild 28 abstützt.An output pinion 23 is arranged on a free end of the intermediate shaft 15 facing the drilling direction and cooperates positively with a pinion 25 that is non-rotatably connected to a tool spindle 24. A second bearing region 26 is arranged between the raceway 19 and the driven pinion 23 of the intermediate shaft 15 and is supported on a bearing plate 28 via a ball bearing 27.

Das in dem Getriebegehäuse 2 angeordnete Lagerschild 28 weist zwei Lagerstellen 29, 30 in Form von Durchtrittsöffnungen auf. Das Kugellager 27 ist In einer ersten Lagerstelle 29 des Lagerschilds 28 axial fest angeordnet. Die zweite Lagerstelle 30 dient der Aufnahme und der Lagerung eines der Bohrrichtung entgegengesetzten Lagerbereiches des Schlagwerks 31, bzw. einer rohrförrrig ausgebildeten, das Schlagwerk 31 umgebenden Werkzeugspindel 24. Diese Werkzeugspindel 24 ist gegenüber dem Lagerschild 28 bzw. gegenüber einem, an der zweiten Lagerstelle 30 angeordneten Gleitlager 33 und gegenüber dem Schlagwerk 31 drehbar.The bearing plate 28 arranged in the gear housing 2 has two bearing points 29, 30 in the form of passage openings. The ball bearing 27 is axially fixed in a first bearing 29 of the end shield 28. The second bearing point 30 serves to receive and support a bearing area of the striking mechanism 31 opposite the drilling direction, or a tubular spindle-shaped tool spindle 24 surrounding the striking mechanism 31. This tool spindle 24 is opposite the end shield 28 or opposite one at the second bearing point 30 arranged slide bearing 33 and rotatable relative to the striking mechanism 31.

Das Schlagwerk 31 setzt sich aus einem Zylinder 34 und einem in dem Zylinder 34 axial versetzbaren Schlagkolben 35 zusammen. Der Zylinder 34 ist in einem der Bohrrichtung entgegengesetzten Endbereich geschlossen. An diesem Endbereich ist ein Bewegungs-gelenk 36 mit einem Drehbolzen 37 angeordnet, der eine senkrecht zur Längserstreckung des Drehbolzens 37 verlaufende Bohrung aufweist. In diese Bohrung greift der Taumelzapfen 16 der Taumelscheibe 17 längsverschieblich ein. Über das Be-wegungsgelenk 36 und den Drehbolzen 37 ist der Zylinder 34 verdrehsicher mit dem Taumel zapfen 16 gekuppelt.The striking mechanism 31 is composed of a cylinder 34 and an impact piston 35 which can be axially displaced in the cylinder 34. The cylinder 34 is closed in an end region opposite the drilling direction. At this end region, a movement joint 36 is arranged with a pivot pin 37, which has a bore running perpendicular to the longitudinal extent of the pivot pin 37. The wobble pin 16 of the swash plate 17 engages in this bore in a longitudinally displaceable manner. Via the movement joint 36 and the pivot pin 37, the cylinder 34 is secured against rotation with the wobble pin 16.

Das Getriebegehäuse 2 weist eine bohrrichtungsseitige und eine der Bohrrichtung entgegengesetzte Öffnung auf, wobei die der Bohrrichtung entgegengesetzte Öffnung grösser ist als die bohrrichtungsseitige Öffnung. Die Aussenkontur des Lagerschilds 28 ist im wesentlichen auf die grössere Öffnung abgestimmt.The gear housing 2 has an opening on the drilling direction side and an opening opposite the drilling direction, the opening opposite the drilling direction being larger than the opening on the drilling direction side. The outer contour of the end shield 28 is essentially matched to the larger opening.

Die Werkzeugspindel 24, das Schlagwerk 31, die Zwischenwelle 15 und der Lagerschild 28 können zu einer Baugruppe zusammengebaut und bei der Montage des Bohr-und/oder Meisselgerätes in das Getriebegehäuse 2 eingesetzt werden. Eine nicht dargestellte Lagerstelle im bohrrichtungsseitigen Bereich des Getriebegehäuses 2 nimmt dabei den bohrichtungsseitigen Endbereich der Werkzeugspindel 32 auf. Beim Aufsetzen des Motorgehäuses 3 auf das Getriebegehäuse 2 gelangt das an der Zwischenwand 11 angeordnete Lager 12 mit dem der Bohrrichtung entgegengesetzen ersten Lagerbereich 21 der Zwischenwelle 15 in Verbindung und die Antriebswelle 5 greift mit ihrer Verzahnung 8 formschlüssig in die Verzahnung des Antriebsritzel 13 der Zwischenwelle 15.The tool spindle 24, the striking mechanism 31, the intermediate shaft 15 and the end shield 28 can be assembled to form an assembly and can be inserted into the gear housing 2 when the drilling and / or chiseling device is installed. A bearing point, not shown, in the area of the transmission housing 2 on the direction of the drilling direction accommodates the end region of the tool spindle 32 on the direction of the drilling direction. When the motor housing 3 is placed on the gear housing 2, the bearing 12 arranged on the intermediate wall 11 comes into connection with the first bearing region 21 of the intermediate shaft 15 opposite the drilling direction, and the toothing 8 of the drive shaft 5 positively engages in the toothing of the drive pinion 13 of the intermediate shaft 15 .

Der axialen Festlegung des Lagerschilds 28 im Innem des Getriebegehäuses 2 dienen Schrauben 38, die durch entsprechende Durchtritte in dem Lagerschild 28 ragen und in nicht näher dargestellte Gewindebohrungen des Getriebegehäuses 2 eingedreht sind.The axial fixing of the bearing plate 28 in the interior of the gear housing 2 is served by screws 38 which protrude through corresponding passages in the bearing plate 28 and are screwed into threaded bores of the gear housing 2 (not shown).

Claims (5)

Bohr- und/oder Meisselgerät mit Getriebegehäuse (2) in dem ein Schlagwerk (31) und eine Zwischenwelle (15) achsparallel gelagert sind, dadurch gekennzeichnet, dass mit dem Getriebegehäuse (2) ein der Lagerung des Schlagwerkes (31) und der Zwischenwelle (15) dienender Lagerschild (28) lösbar verbunden istDrilling and / or chiseling device with gear housing (2) in which a striking mechanism (31) and an intermediate shaft (15) are mounted axially parallel, characterized in that the gear housing (2) supports the striking mechanism (31) and the intermediate shaft ( 15) serving end shield (28) is detachably connected Bohr- und/oder Meisselgerät nach Anspruch 1, dadurch gekennzeichnet, dass der Lagerschild (28) eine Lagerstelle (30) für einen der Bohrrichtung entgegengesetzten Lagerbereich des Schlagwerkes (31) bildet.Drilling and / or chiseling device according to claim 1, characterized in that the bearing plate (28) forms a bearing point (30) for a bearing area of the striking mechanism (31) opposite the drilling direction. Bohr- und oder Meisselgerät nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Lagerschild (28) eine Lagerstelle (29) für einen der Bohrrichtung zugewandten Lagerbereich (26) der Zwischenwelle (15) bildet.Drilling and / or chiseling device according to claim 1 or 2, characterized in that the bearing plate (28) forms a bearing point (29) for a bearing area (26) of the intermediate shaft (15) facing the drilling direction. Bohr- und/oder Meisseigerät nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Lagerschild (28) mittels wenigstens einer Schraubverbindung mit dem Getriebegehäuse (2) verbunden ist.Drilling and / or chiseling device according to one of claims 1 to 3, characterized in that the bearing plate (28) is connected to the gear housing (2) by means of at least one screw connection. Bohr- und/oder Meisselgerät nach einem der Ansprüche 1 bis 4, dadurch ge-kennzeichnet, dass der Lagerschild (28) aus Metall gebildet ist.Drilling and / or chiseling device according to one of claims 1 to 4, characterized in that the bearing plate (28) is formed from metal.
EP96810426A 1995-10-30 1996-06-26 Drilling and chiseling tool Expired - Lifetime EP0771620B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19540391 1995-10-30
DE19540391A DE19540391A1 (en) 1995-10-30 1995-10-30 Drilling and chiseling device

Publications (2)

Publication Number Publication Date
EP0771620A1 true EP0771620A1 (en) 1997-05-07
EP0771620B1 EP0771620B1 (en) 2000-03-22

Family

ID=7776165

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96810426A Expired - Lifetime EP0771620B1 (en) 1995-10-30 1996-06-26 Drilling and chiseling tool

Country Status (5)

Country Link
US (1) US5732782A (en)
EP (1) EP0771620B1 (en)
JP (1) JPH09168978A (en)
CN (1) CN1075411C (en)
DE (2) DE19540391A1 (en)

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WO2008107251A1 (en) * 2007-03-02 2008-09-12 Robert Bosch Gmbh Hand machine tool
WO2010012520A1 (en) * 2008-07-28 2010-02-04 Robert Bosch Gmbh Impact device
WO2011003646A1 (en) * 2009-07-09 2011-01-13 Robert Bosch Gmbh Hammer-drilling and/or cutting device
DE102020212425A1 (en) 2020-10-01 2022-04-07 Robert Bosch Gesellschaft mit beschränkter Haftung Bearing flange for a drive system of a hand-held power tool, as well as a rotary hammer with a percussion mechanism and a bearing flange

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DE19955412A1 (en) * 1999-11-18 2001-05-23 Hilti Ag Drilling and chiseling device
GB0125749D0 (en) * 2001-10-26 2001-12-19 Black & Decker Inc Power tool
DE10313782B4 (en) * 2003-03-20 2008-10-16 Robert Bosch Gmbh Power tool with multi-part housing
CN2920563Y (en) * 2006-07-11 2007-07-11 王文江 Light single-span four function electric hammer
US8636081B2 (en) 2011-12-15 2014-01-28 Milwaukee Electric Tool Corporation Rotary hammer
DE202010012253U1 (en) * 2010-09-07 2010-11-18 Robert Bosch Gmbh Machine tool, in particular hand tool
JP6378947B2 (en) * 2014-06-26 2018-08-22 株式会社マキタ Electric tool
CN110125454B (en) * 2019-06-17 2021-07-30 上海同叶应用技术发展中心 Robot for mining and surveying
CN114012646B (en) * 2021-10-29 2023-07-25 合肥工业大学 Swing transmission double-head double-way fastening device

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DE2110015A1 (en) * 1971-03-03 1972-09-07 Kress elektnk GmbH & Co Elektromo torenfabnk, 7457 Bisingen Impact drill
DE2715615B1 (en) * 1977-04-07 1978-09-21 Metabowerke Kg, Closs, Rauch & Schnizler, 7440 Nuertingen Impact drill with a metal bearing part for the spindle
DE3506695A1 (en) * 1985-02-26 1986-08-28 Robert Bosch Gmbh, 7000 Stuttgart DRILLING HAMMER

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008107251A1 (en) * 2007-03-02 2008-09-12 Robert Bosch Gmbh Hand machine tool
WO2010012520A1 (en) * 2008-07-28 2010-02-04 Robert Bosch Gmbh Impact device
WO2011003646A1 (en) * 2009-07-09 2011-01-13 Robert Bosch Gmbh Hammer-drilling and/or cutting device
RU2538466C2 (en) * 2009-07-09 2015-01-10 Роберт Бош Гмбх Hand-held electrically driven tool composed of battery hammer drill
DE102020212425A1 (en) 2020-10-01 2022-04-07 Robert Bosch Gesellschaft mit beschränkter Haftung Bearing flange for a drive system of a hand-held power tool, as well as a rotary hammer with a percussion mechanism and a bearing flange

Also Published As

Publication number Publication date
JPH09168978A (en) 1997-06-30
CN1151921A (en) 1997-06-18
US5732782A (en) 1998-03-31
DE19540391A1 (en) 1997-05-07
CN1075411C (en) 2001-11-28
EP0771620B1 (en) 2000-03-22
DE59604749D1 (en) 2000-04-27

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