EP1541292A2 - Bohrhammer - Google Patents
Bohrhammer Download PDFInfo
- Publication number
- EP1541292A2 EP1541292A2 EP04106416A EP04106416A EP1541292A2 EP 1541292 A2 EP1541292 A2 EP 1541292A2 EP 04106416 A EP04106416 A EP 04106416A EP 04106416 A EP04106416 A EP 04106416A EP 1541292 A2 EP1541292 A2 EP 1541292A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- active surface
- hammer
- hammer drill
- actuating element
- housing
- 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.)
- Granted
Links
- 238000009527 percussion Methods 0.000 title claims description 3
- 238000005553 drilling Methods 0.000 claims description 15
- 230000007246 mechanism Effects 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
Images
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
- B25D16/006—Mode changers; Mechanisms connected thereto
-
- 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
- B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
- B25D2216/0007—Details of percussion or rotation modes
- B25D2216/0015—Tools having a percussion-only mode
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
- B25D2216/0007—Details of percussion or rotation modes
- B25D2216/0023—Tools having a percussion-and-rotation mode
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2216/00—Details of portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
- B25D2216/0007—Details of percussion or rotation modes
- B25D2216/0038—Tools having a rotation-only mode
-
- 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
- B25D2250/121—Housing 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
- B25D2250/371—Use of springs
Definitions
- the invention relates to a rotary hammer or chisel hammer with a tool holder for a drilling and / or chisel tool and with a housing, a rotary drive, a Schlagwerk and a gearbox.
- the rotary drive, the striking mechanism and the gearbox are arranged in the housing and at least partially isolated from this vibration.
- the Rotary hammer further comprises a switching element for setting one of the operating conditions of the hammer drill, such as chiseling, hammer drilling and / or drilling.
- On the housing an externally operable actuator is arranged, which with a Having the switching element engaged eccentric part and a handle part.
- the externally operable actuator is a on the operating part trained eccentric set the desired operating condition of the hammer drill.
- a disadvantage of the known solutions is that for operating the Excenters a part of the Actuator penetrates the housing of the hammer drill. Become the rotary drive, the impact mechanism and / or the gearbox for the purpose of vibration reduction relative to Housing slidably mounted, act during operation of the rotary hammer, the existing relative movements also on the actuator and the housing. Besides the danger of penetrating dust cause the forces acting on the actuator and the friction between this and the housing to a high material load and connected to a wear of the actuating element. In addition, the effectiveness of Vibration reduction limited because of the actuator part of the vibrations transferred to the housing and thus forwarded to the user. Also at a touch of the actuating element can in the known solutions, a part of Vibrations are forwarded to the user.
- the object of the invention is to provide a hammer drill or chisel hammer, which has an improved vibration reduction and by means of an actuating element a faultless switching between the different operating states, respectively Setting the various operating conditions of the hammer possible.
- the eccentric part and the handle part of the actuating element decoupled from one another and have these active surfaces which can be brought into operative connection with one another on.
- the eccentric part and the handle part have each active surfaces, which by means of actuation of the handle part for switching between the operating conditions of the hammer drill or chisel hammer in Active compound can be brought.
- the actuating element via latching marks defined switching positions every operating condition.
- the user takes the position of the actuating element, or the switching process between the operating states sensitive true.
- the handle part corresponding latching marks, for example via guided in balls, on.
- the handle part has a first actuating element with a first active surface and the eccentric part a second actuator with a second active surface, wherein the first active surface and the second effective surface are arranged opposite to each other and from each other are spaced.
- the configuration of the active surfaces is in particular of the type of movement the actuating means determined.
- the distance between the first effective area and the second active surface ensures that the eccentric relative to the handle portion inside of the housing can move without the handle part is significantly burdened.
- the distance between the first active surface and the second active surface a friction between the active surfaces and thus a consequent wear of the Control elements prevents what the useful life of the hammer drill and in particular the Actuator improved over the known versions.
- the first active surface and the second active surface are at least in the operating states Chiseling and hammer drilling of the hammer drill or the Chisel hammer substantially parallel to the direction of movement relative to the housing at least aligned the striking mechanism.
- chiseling and hammer drilling occur the largest relative movements of the internally displaceably mounted components of the Hammer or chisel hammer.
- the first adjusting means on the handle part and the second adjusting means on the eccentric part for example, each formed as a web, whose active surfaces are straight and which are spaced from each other.
- one of the active surfaces has a defined, z. B. concave configuration and the other effective surface a, complementary to the first active surface trained, z. B. convex configuration.
- the active surfaces can run in opposite directions be formed, provided that this upon actuation of the handle part of the actuating element can be brought into operative connection with each other.
- the first active surface is circumferential to the second active surface arranged.
- the first active surface at least partially comprises the second active surface and can be brought into operative connection with it by different mechanisms.
- the first active surface serves an inner contour of a pocket-shaped, z.
- B. a substantially U-shaped Recording as a first effective surface, which partially surrounds an element whose outer contour forms the second effective surface.
- the first effective area is at least partially concentrically arranged circumferentially to the second effective surface.
- At least the handle part of the actuating element is about a pivot point actuated.
- the handle part is formed in this embodiment as a so-called rotary switch.
- At least the handle part of the actuating element Can be operated linearly in one plane.
- the grip part is in this embodiment as a so-called Sliding switch formed.
- the distance between the first effective area and the second effective area greater than a maximum relative displacement of at least the striking mechanism to the housing.
- the distance between the between the first effective area and the second Effective area in the direction of one of the active surfaces at least greater than a maximum relative distance the striking mechanism to the housing.
- the grip part has a receiving sleeve as the first adjusting element and the eccentric part a mandrel as a second actuating element on a, arranged on the eccentric eccentric lever on, wherein the receiving sleeve surrounds the mandrel at least partially.
- the linearly extending in a plane movement of the handle part in preferably be converted into a rotational movement of the Excentermaschines. It will no specially adapted to the designed as a slide switch handle part mechanisms or versions of the Excenterwels required for switching the switching element.
- the handle part is articulated by means of a lever on the housing.
- the handle part becomes held by the lever, which on the outside of the housing of the hammer drill no measures to guide and hold the handle in its various positions required are.
- the inventive hammer drill 1 shown in Fig. 1 and Fig. 2 with a tool holder 2 has in the housing 4 serving as a rotary drive 3 motor, a striking mechanism. 5 and a gear 6, the vibration via a suspension / damping device 7 of this decoupled are.
- a switching element 8 the operating conditions, such as chiselling, hammer drilling, Drilling and / or idling on the gear 6, or on the percussion 5 set.
- an actuating element 11 is arranged, the one with the switching element 8 in engagement eccentric 12 and a Handle part 13 for actuating the actuating element 11 from the outside.
- the excenter part 12 and the handle portion 13 are formed as two separate parts and decoupled from each other.
- the handle part 13 is rotatably supported by means of balls 20 on the housing 4.
- the balls are running in a backdrop 21 which is provided with depressions for the formation of locking marks and so defines defined switching positions of the actuating element 11 for each operating state.
- the first actuating element 14 with a first Working surface 15 and on the eccentric 12 is designed as a web
- the first active surface 15 and the second active surface 17 are each linear, parallel and spaced apart from each other.
- the position shown of the first control element 14 and of the second control element 16 corresponds to the defined switching position chisels or hammer drilling, wherein the direction of movement of at least the impact mechanism 5 in the direction of Double arrow 18 takes place.
- the handle part 13 is designed as a rotary knob, which is rotatable about the pivot point 19.
- the first actuator 14 rotates with and its first active surface 15 occurs in regions during the continuous turning process the second active surface 17 in contact, whereupon the second actuator 16 is taken and the eccentric 12 moves and thus, which, with the eccentric 12 engaged Switching element 8 is actuated.
- the first effective area 15 and the second active surface 17 again spaced from each other.
- FIG. 4 shows a variant of the first actuating element 14 shown in FIG. 3 and second Actuator 16 shown.
- the first active surface 25 of the first control element 24 is in this Embodiment substantially convex and the second effective surface 27 of the second Control element 26 is curved substantially concave.
- the first active surface 25 of the first actuating element 24 in operative connection brought with the second active surface 27 of the second control element 26.
- the handle portion 33 of the actuator 31 shown in Fig. 5 is a slide switch formed, which is substantially linear along one of the outer side 39 of the housing 40 formed level, or actuated in the directions of the double arrow 41 is.
- the eccentric 32 is connected to the trained as a sleeve switching element 38 in Intervention.
- the eccentric 32 has an eccentric lever 46 and one in the direction of the Handle 33 aligned, protruding mandrel 36 as a second actuator, whose Outer contour forms the second effective area.
- On the handle part 33 is one in the direction of the Excentermaschines 32 aligned receiving sleeve 34 formed as a first actuator, the Inner contour forms the first active surface.
- the receiving sleeve 34 on the handle part 33 includes the mandrel 36 on the eccentric part 32 such that at each switching between the operating conditions the inner contour of the receiving sleeve 34 with the outer contour of the mandrel 36th can be brought into operative connection.
- the first actuator than, for example be formed elongated receiving profile, with the mandrel 36 as a second actuator in Active compound can be brought.
- the handle part 33 is articulated via the lever 47 on the housing 40.
- a recess 48 is provided in the housing 40.
- the grip part 33 is guided on the housing 40 via a guide rail.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
- Drilling And Boring (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Percussion Or Vibration Massage (AREA)
Abstract
Description
- Fig. 1
- Einen Längsschnitt durch einen erfindungsgemässen Bohrhammer entlang der Linie I-I in Fig. 2;
- Fig. 2
- einen Querschnitt entlang der Linie II-II in Fig. 1;
- Fig. 3
- eine Ansicht auf ein erstes Ausführungsbeispiel von Stellelementen mit geraden Wirkflächen;
- Fig. 4
- eine Ansicht auf ein zweites Ausführungsbeispiel von Stellelementen mit gekrümmten Wirkflächen; und
- Fig. 5
- einen Querschnitt durch eine Variante zu dem, in Fig. 1 gezeigten Bohrhammer.
Claims (10)
- Bohrhammer beziehungsweise Meisselhammer mit einer Werkzeugaufnahme (2) für ein Bohr- und/oder Meisselwerkzeug sowie mit einem Gehäuse (4; 40), einem Drehantrieb (3), einem Schlagwerk (5) und einem Getriebe (6), wobei der Drehantrieb (3), das Schlagwerk (5) und das Getriebe (6) im Gehäuse (4; 40) angeordnet und zumindest teilweise von diesem vibrationsentkoppelt sind, sowie mit einem Schaltelement (8; 38) zum Einstellen von einem der Betriebszustände des Bohrhammers (1) beziehungsweise des Meisselhammers, wie beispielsweise Meisseln, Hammerbohren und/oder Bohren, und mit einem von aussen betätigbares, am Gehäuse (4; 40) angeordnetes Betätigungselement (11; 31), das ein mit dem Schaltelement (8; 38) in Eingriff stehendes Excenterteil (12; 32) und ein Griffteil (13; 33) aufweist, dadurch gekennzeichnet, dass das Excenterteil (12; 32) und das Griffteil (13; 33) des Betätigungselementes (11; 31) voneinander entkoppelt sind und miteinander in Wirkverbindung bringbare Wirkflächen aufweisen.
- Bohrhammer nach Anspruch 1, dadurch gekennzeichnet, dass das Betätigungselement (11), vorzugsweise das Griffteil (13), über Rastmarken definierte Schaltstellungen zu jedem Betriebszustand aufweist.
- Bohrhammer nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Griffteil (13; 33) ein erstes Stellelement (14; 24) mit einer ersten Wirkfläche (15; 25) und das Excenterteil (12; 32) ein zweites Stellelement (16; 26) mit einer zweiten Wirkfläche (17; 27) aufweist, wobei die erste Wirkfläche (15; 25) und die zweite Wirkfläche (17; 27) einander gegenüberliegend angeordnet und voneinander beabstandet sind.
- Bohrhammer nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die erste Wirkfläche (15; 25) und die zweite Wirkfläche (17; 27) zumindest in den Betriebszuständen Meisseln und Hammerbohren des Bohrhammers (1) beziehungsweise des Meisselhammers im Wesentlichen parallel zur Bewegungsrichtung zumindest des Schlagwerkes (5) ausgerichtet sind.
- Bohrhammer nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die erste Wirkfläche, vorzugsweise konzentrisch, umlaufend zur zweiten Wirkfläche angeordnet ist.
- Bohrhammer nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass zumindest das Griffteil (13) des Betätigungselementes (11) um einen Drehpunkt (19) betätigbar ist.
- Bohrhammer nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass zumindest der Griffteil (33) des Betätigungselementes (31) linear in einer Ebene betätigbar ist.
- Bohrhammer nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der Abstand zwischen der ersten Wirkfläche (15; 25) und der zweiten Wirkfläche (17; 27) grösser als ein maximaler Relativweg zumindest des Schlagwerkes (5) zu dem Gehäuse (4) ist.
- Bohrhammer nach einem der Ansprüche 5 bis 8, dadurch gekennzeichnet, dass das Griffteil (33) als erstes Stellelement eine Aufnahmehülse (34) und das Excenterteil (32) einen Excenterhebel (46) mit einem, als zweites Stellelement ausgebildeten Dorn (36) aufweist, wobei die Aufnahmehülse (34) den Dorn (36) zumindest teilweise umgibt.
- Bohrhammer nach einem der Ansprüche 5 bis 9, dadurch gekennzeichnet, dass das Griffteil (33) mittels eines Hebels (47) am Gehäuse (40) angelenkt ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10357962 | 2003-12-11 | ||
DE10357962A DE10357962B3 (de) | 2003-12-11 | 2003-12-11 | Bohrhammer |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1541292A2 true EP1541292A2 (de) | 2005-06-15 |
EP1541292A3 EP1541292A3 (de) | 2006-02-01 |
EP1541292B1 EP1541292B1 (de) | 2010-10-20 |
Family
ID=34485320
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04106416A Active EP1541292B1 (de) | 2003-12-11 | 2004-12-09 | Bohrhammer |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1541292B1 (de) |
AT (1) | ATE485134T1 (de) |
DE (2) | DE10357962B3 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1030643C2 (nl) * | 2005-12-12 | 2007-06-13 | Arie Koenraad Jan Rokus Horden | Elektrisch apparaat met slagmechanisme. |
WO2012084349A1 (de) * | 2010-12-21 | 2012-06-28 | Robert Bosch Gmbh | Handwerkzeugmaschine |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19933972A1 (de) | 1999-07-20 | 2001-01-25 | Bosch Gmbh Robert | Bohr- oder Schlaghammer |
US6192996B1 (en) | 1999-08-26 | 2001-02-27 | Makita Corporation | Mode changing mechanism for use in a hammer drill |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3405922A1 (de) * | 1984-02-18 | 1985-08-22 | Robert Bosch Gmbh, 7000 Stuttgart | Handwerkzeugmaschine, insbesondere bohr- oder schlaghammer |
DE19545260A1 (de) * | 1995-11-24 | 1997-05-28 | Black & Decker Inc | Bohrhammer |
DE10031050A1 (de) * | 2000-06-26 | 2002-01-10 | Hilti Ag | Handwerkzeuggerät |
DE10108124A1 (de) * | 2001-02-21 | 2002-08-29 | Hilti Ag | Modenwahldrehschalter für ein Handwerkzeuggerät |
-
2003
- 2003-12-11 DE DE10357962A patent/DE10357962B3/de not_active Expired - Fee Related
-
2004
- 2004-12-09 DE DE502004011793T patent/DE502004011793D1/de active Active
- 2004-12-09 EP EP04106416A patent/EP1541292B1/de active Active
- 2004-12-09 AT AT04106416T patent/ATE485134T1/de not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19933972A1 (de) | 1999-07-20 | 2001-01-25 | Bosch Gmbh Robert | Bohr- oder Schlaghammer |
US6192996B1 (en) | 1999-08-26 | 2001-02-27 | Makita Corporation | Mode changing mechanism for use in a hammer drill |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1030643C2 (nl) * | 2005-12-12 | 2007-06-13 | Arie Koenraad Jan Rokus Horden | Elektrisch apparaat met slagmechanisme. |
WO2012084349A1 (de) * | 2010-12-21 | 2012-06-28 | Robert Bosch Gmbh | Handwerkzeugmaschine |
Also Published As
Publication number | Publication date |
---|---|
EP1541292B1 (de) | 2010-10-20 |
DE502004011793D1 (de) | 2010-12-02 |
DE10357962B3 (de) | 2005-09-08 |
ATE485134T1 (de) | 2010-11-15 |
EP1541292A3 (de) | 2006-02-01 |
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