EP1541292B1 - Marteau perforateur - Google Patents

Marteau perforateur Download PDF

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Publication number
EP1541292B1
EP1541292B1 EP04106416A EP04106416A EP1541292B1 EP 1541292 B1 EP1541292 B1 EP 1541292B1 EP 04106416 A EP04106416 A EP 04106416A EP 04106416 A EP04106416 A EP 04106416A EP 1541292 B1 EP1541292 B1 EP 1541292B1
Authority
EP
European Patent Office
Prior art keywords
actioning
hammer drill
hammer
housing
drill according
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.)
Active
Application number
EP04106416A
Other languages
German (de)
English (en)
Other versions
EP1541292A3 (fr
EP1541292A2 (fr
Inventor
Hubert Daxenberger
Erwin Manschitz
Ralph NEUHÄUSER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hilti AG
Original Assignee
Hilti AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hilti AG filed Critical Hilti AG
Publication of EP1541292A2 publication Critical patent/EP1541292A2/fr
Publication of EP1541292A3 publication Critical patent/EP1541292A3/fr
Application granted granted Critical
Publication of EP1541292B1 publication Critical patent/EP1541292B1/fr
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Anticipated expiration legal-status Critical

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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
    • 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 hammer drill or chisel hammer with a factory: eugability for a drilling and / or chisel tool and with a housing, a rehantrieb, a striking mechanism and a transmission, according to the preamble of claim 1 and as shown in US 6,192,996 B1 known.
  • the rotary drive, the hammer mechanism and the gearbox are arranged in the housing.
  • the hammer drill further includes a switching element for adjusting one of the operating conditions of the hammer drill, such as chiseling, hammer drilling and / or drilling.
  • On the housing an externally operable actuating element is arranged, which has an eccentric part engaging with the switching element and a handle part.
  • a releasable and circumferentially adjustable tool lock is used for the operating states of chiseling, hammer drilling and / or drilling.
  • combi hammers is also taken from the tool locking the rotational drive in drilling operation.
  • the teeth of the tool lock must be placed in the dust-protected oil chamber of the hammer drill.
  • the desired operating state of the rotary hammer is set via an eccentric part formed on the actuating part.
  • a rotatably and axially associated with the tool holder guide tube is proposed, which is displaced by a, through which the oil chamber enclosing device wall sweeping eccentric against a compression spring.
  • a guide tube operated via eccentric shifters can be used to adjust the operating conditions of the hammer drill.
  • a switching device is shown, engage in the eccentric pins in a switching element serving as a switching plate.
  • a switching device is shown, in which an eccentric cam engages in a serving as a switching element switching plate.
  • a disadvantage of the known solutions is that for actuating the eccentric part of the actuating element penetrates the housing of the hammer drill. If the rotary drive, the striking mechanism and / or the gearbox are mounted displaceably relative to the housing for the purpose of reducing vibration, the existing relative movements also act on the actuating element and the housing during operation of the rotary hammer. In addition to the risk of dust penetrating the forces acting on the actuator and the friction between this and the housing to a high material load and associated wear to the actuator. In addition, the effectiveness of the vibration reduction is limited because transmitted via the actuator part of the vibrations to the housing and thus forwarded to the user. Even with a touch of the actuator part of the vibrations can be forwarded to the user in the known solutions.
  • a rotary switch for a hand tool for synchronized selection of several operating modes is shown.
  • An externally operable actuating part of the rotary switch has two eccentrically arranged switching pins which contact a associated leaf spring deformingly on one side at a rotation of the operating part, which is non-rotatably connected to a coaxially rotatable switching part in the interior of the power tool.
  • In each position of the actuating part is at least one of the switching pins of the actuating part via the leaf spring with the switching part in operative connection.
  • the object of the invention is to provide a rotary hammer or chisel hammer, which has an improved vibration reduction and by means of an actuating element a perfect switching between the various operating conditions, or setting the various operating conditions of the hammer drill allows.
  • the eccentric part and the grip part of the actuating element are decoupled from one another and have these active surfaces which can be brought into operative connection with one another.
  • the eccentric part which is in engagement with the switching element, can rotate with the rotary drive moving relative to the housing, Accelerator and / or gear move, without these relative movements are transmitted to the housing of the hammer drill or the chisel hammer and the actuator is charged thereby.
  • the eccentric part and the handle part each have active surfaces, which can be brought into operative connection by means of actuation of the grip part for switching between the operating states of the hammer drill or the chisel hammer.
  • the actuating element has latch positions defined switching positions for each operating state.
  • the user perceives the position of the actuating element, or the switching process carried out between the operating states sensitive.
  • the handle part corresponding latching marks, for example, guided in scenes balls on.
  • the handle part has a first actuating element with a first active surface and the eccentric part has a second actuating element with a second active surface, wherein the first active surface and the second active surface are arranged opposite one another and spaced from each other.
  • the configuration of the active surfaces is determined in particular by the type of movement of the actuating means.
  • the distance between the first active surface and the second active surface ensures that the eccentric part can move relative to the handle part inside the housing, without the handle part being significantly stressed.
  • a friction between the active surfaces and thus consequent wear of the adjusting elements is prevented by the distance between the first active surface and the second active surface, which improves the service life of the hammer drill and in particular of the actuating element over the known embodiments.
  • the first active surface and the second active surface are aligned at least in the operating states of chiselling and hammer drilling of the hammer drill or the chisel hammer substantially parallel to the direction of movement relative to the housing at least the percussion mechanism.
  • the greatest relative movements of the internally displaceably mounted components of the hammer drill or the chisel hammer occur.
  • 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.
  • the active surfaces may be designed to run in opposite directions, provided that they can be brought into operative connection with one another during the actuation of the grip part of the actuating element.
  • the first active surface is arranged circumferentially to the second active surface.
  • the first active surface comprises at least partially the second active surface and can be brought into operative connection therewith by different mechanisms.
  • the first active surface is arranged at least partially concentrically surrounding the second active surface.
  • the handle part of the actuating element can be actuated about a pivot point.
  • the handle part is formed in this embodiment as a so-called rotary switch.
  • the first active surface formed thereon is at least partially brought into operative connection with the second active surface formed on the eccentric part and the rotary hammer is switched to the corresponding operating state in accordance with the position of the eccentric part and the resulting position of the switching element.
  • the grip part of the actuating element can be actuated linearly in one plane.
  • the handle part is formed in this embodiment as a so-called slide switch.
  • the distance between the first effective area and the second effective area is greater than a maximum relative distance of at least the percussion mechanism to the housing.
  • the distance between the between the first active surface and the second active surface in the direction of one of the active surfaces is greater than a maximum relative distance at least of the striking mechanism to the housing.
  • the gripping part preferably has a receiving sleeve as the first adjusting element and the eccentric part has a mandrel as the second adjusting element on an eccentric lever arranged on the eccentric part, wherein the receiving sleeve at least partially surrounds the mandrel.
  • the handle part as a slide switch can in this embodiment of the actuating element extending linearly in a plane movement of the handle part in preferably be converted into a rotational movement of the Excentermaschines. There are no specially adapted to the trained as a slide switch handle part mechanisms or versions of the Excentermaschines for switching the switching element required.
  • the handle part is articulated by means of a lever on the housing.
  • the grip part is held by means of the lever, whereby no measures for guiding and holding the grip part in its different positions are required on the outside of the housing of the hammer drill.
  • Fig. 1 and Fig. 2 shown inventive hammer drill 1 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, which are vibration-decoupled via a suspension / damping device 7 of this.
  • a switching element 8 the operating conditions, such as chiselling, hammer drilling, drilling and / or idle on the gear 6, or set to the striking mechanism 5.
  • an actuating element 11 is arranged, which is a standing with the switching element 8 engaging eccentric 12 and a Handle part 13 for actuating the actuating element 11 from the outside.
  • the eccentric 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 run in a slot 21 which is provided with recesses for the formation of latching marks and thus forms defined switching positions of the actuating element 11 to each operating state.
  • first actuator 14 having a first active surface 15 and on the eccentric 12 is formed as a web
  • second actuator 16 is formed with a second active surface 17, wherein the first active surface 15 and the second active surface 17 at Actuation of the handle part 13 can be brought into operative connection.
  • the first active surface 15 and the second active surface 17 are each linearly extending, parallel and spaced from each other.
  • the position shown of the first control element 14 and the second control element 16 corresponds to the defined switching position chisels or hammer drilling, wherein the movement direction is at least the striking mechanism 5 in the direction of the double arrow 18.
  • 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 rotation with the second active surface 17 into contact, whereupon the second actuator 16 is taken and the eccentric 12 moves and thus, with the eccentric 12th engaged switching element 8 is actuated.
  • the first active surface 15 and the second active surface 17 are again spaced from each other.
  • Fig. 4 is a variant of the in Fig. 3 shown first actuating element 14 and second actuator 16 shown.
  • the first active surface 25 of the first control element 24 is substantially convex in this embodiment, and the second active surface 27 of the second control element 26 is curved substantially concave.
  • the first active surface 25 of the first actuating element 24 is brought into operative connection with the second active surface 27 of the second actuating element 26.
  • the handle portion 33 of, in Fig. 5 shown actuating element 31 is formed as a slide switch, which is substantially linearly actuated along a plane formed by the outer side 39 of the housing 40, or in the directions of the double arrow 41.
  • 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 of them in the direction of the handle portion 33 aligned, protruding mandrel 36 as a second actuator, whose outer contour forms the second effective surface.
  • the receiving sleeve 34 on the handle part 33 comprises the mandrel 36 on the eccentric part 32 in such a way that the inner contour of the receiving sleeve 34 can be brought into operative connection with the outer contour of the mandrel 36 with each switching between the operating states.
  • the first adjusting element can be designed as an elongated receiving profile, for example, which can be brought into operative connection with the mandrel 36 as a second adjusting element.
  • 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)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Drilling And Boring (AREA)

Claims (10)

  1. Marteau perforateur ou marteau-burineur, comportant un porte-outil (2) pour un outil de perçage et/ou de burinage, ainsi qu'un boîtier (4 ; 40), un mécanisme d'entraînement en rotation (3), un mécanisme de percussion (5) et un engrenage (6), dans lequel le mécanisme d'entraînement en rotation (3), le mécanisme de percussion (5) et l'engrenage (6) sont agencés dans le boîtier (4 ; 40), et comportant également un élément de commutation (8 ; 38) pour régler un des états de fonctionnement du marteau perforateur (1) ou du marteau-burineur, tels que par exemple le burinage, la perforation et/ou le perçage, et un élément d'actionnement (11 ; 31) agencé sur le boîtier (4 ; 40) et pouvant être actionné depuis l'extérieur, ledit élément d'actionnement comportant une partie d'excentrique (12 ; 32) en prise avec l'élément de commutation (8 ; 38) et une partie de prise (13 ; 33), caractérisé en ce que le mécanisme d'entraînement en rotation (3), le mécanisme de percussion (5) et l'engrenage (6) dans le boîtier (4 ; 40) sont au moins partiellement isolés des vibrations de celui-ci, et en ce que la partie d'excentrique (12; 32) et la partie de prise (13 ; 33) de l'élément d'actionnement (11 ; 31) sont désaccouplées l'une de l'autre et comportent des surfaces actives pouvant être mises en liaison active.
  2. Marteau perforateur selon la revendication 1, caractérisé en ce que l'élément d'actionnement (11), de préférence la partie de prise (13), a des positions de commutation définies par des repères à cran pour chaque état de fonctionnement.
  3. Marteau perforateur selon la revendication 1 ou 2, caractérisé en ce que la partie de prise (13 ; 33) comporte un premier élément de réglage (14 ; 24) ayant une première surface active (15 ; 25) et la partie d'excentrique (12 ; 32) comporte un second de réglage (16 ; 26) ayant une seconde surface active (17 ; 27), dans lequel la première surface active (15 ; 25) et la seconde surface active (17 ; 27) sont agencées l'une en face de l'autre et sont espacées l'une de l'autre.
  4. Marteau perforateur selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la première surface active (15 ; 25) et la seconde surfaces active (17 ; 27) sont, au moins dans les états de fonctionnement de burinage et de perforation du marteau perforateur (1) ou du marteau-burineur, sensiblement parallèles à la direction de déplacement au moins du mécanisme de percussion (5).
  5. Marteau perforateur selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la première surface active est agencée de préférence concentriquement, de manière circonférentielle par rapport à la seconde surface active.
  6. Marteau perforateur selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'au moins la partie de prise (13) de l'élément d'actionnement (11) peut être actionnée autour d'un point de rotation (19).
  7. Marteau perforateur selon l'une quelconque des revendications 1 à 5. caractérisé en ce qu'au moins la partie de prise (33) de l'élément d'actionnement (31) peut être actionnée linéairement dans un plan.
  8. Marteau perforateur selon l'une quelconque des revendications 1 à 7, caractérisé en ce que la distance entre la première surface active (15 ; 25) et la seconde surface active (17 ; 27) est plus grande qu'un déplacement relatif maximal au moins du mécanisme de percussion (5) par rapport au boîtier (4).
  9. Marteau perforateur selon l'une quelconque des revendications 5 à 8, caractérisé en ce que la partie de prise (33), en tant que premier élément de réglage, comporte une douille de réception (34), et la partie d'excentrique (32) comporte un levier d'excentrique (46) muni d'un goujon (36) conçu comme un second élément de réglage, la douille de réception (34) entourant au moins partiellement le goujon (36).
  10. Marteau perforateur selon l'une quelconque des revendications 5 à 9, caractérisé en ce que la partie de prise (33) est articulée sur le boîtier (40) au moyen d'un levier (47).
EP04106416A 2003-12-11 2004-12-09 Marteau perforateur Active EP1541292B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10357962A DE10357962B3 (de) 2003-12-11 2003-12-11 Bohrhammer
DE10357962 2003-12-11

Publications (3)

Publication Number Publication Date
EP1541292A2 EP1541292A2 (fr) 2005-06-15
EP1541292A3 EP1541292A3 (fr) 2006-02-01
EP1541292B1 true EP1541292B1 (fr) 2010-10-20

Family

ID=34485320

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04106416A Active EP1541292B1 (fr) 2003-12-11 2004-12-09 Marteau perforateur

Country Status (3)

Country Link
EP (1) EP1541292B1 (fr)
AT (1) ATE485134T1 (fr)
DE (2) DE10357962B3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
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.
DE102010063619A1 (de) * 2010-12-21 2012-06-21 Robert Bosch Gmbh Handwerkzeugmaschine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
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
DE19933972A1 (de) * 1999-07-20 2001-01-25 Bosch Gmbh Robert Bohr- oder Schlaghammer
JP3688943B2 (ja) * 1999-08-26 2005-08-31 株式会社マキタ ハンマードリル
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

Also Published As

Publication number Publication date
EP1541292A3 (fr) 2006-02-01
ATE485134T1 (de) 2010-11-15
EP1541292A2 (fr) 2005-06-15
DE10357962B3 (de) 2005-09-08
DE502004011793D1 (de) 2010-12-02

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