EP3822030A1 - Marteau perforateur et/ou burin avec agencement de mécanisme de percussion - Google Patents

Marteau perforateur et/ou burin avec agencement de mécanisme de percussion Download PDF

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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Withdrawn
Application number
EP19209441.5A
Other languages
German (de)
English (en)
Inventor
Maximo Arroyo Marin
Ulrich Mandel
Josef Fünfer
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
Priority to EP19209441.5A priority Critical patent/EP3822030A1/fr
Priority to PCT/EP2020/081266 priority patent/WO2021094213A1/fr
Priority to EP20800186.7A priority patent/EP4058245A1/fr
Priority to CN202080067926.6A priority patent/CN114450128A/zh
Priority to US17/771,799 priority patent/US20220388137A1/en
Publication of EP3822030A1 publication Critical patent/EP3822030A1/fr
Withdrawn legal-status Critical Current

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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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
EP19209441.5A 2019-11-15 2019-11-15 Marteau perforateur et/ou burin avec agencement de mécanisme de percussion Withdrawn EP3822030A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP19209441.5A EP3822030A1 (fr) 2019-11-15 2019-11-15 Marteau perforateur et/ou burin avec agencement de mécanisme de percussion
PCT/EP2020/081266 WO2021094213A1 (fr) 2019-11-15 2020-11-06 Ensemble mécanisme de percussion
EP20800186.7A EP4058245A1 (fr) 2019-11-15 2020-11-06 Ensemble mécanisme de percussion
CN202080067926.6A CN114450128A (zh) 2019-11-15 2020-11-06 冲击机构布置
US17/771,799 US20220388137A1 (en) 2019-11-15 2020-11-06 Impact mechanism arrangement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19209441.5A EP3822030A1 (fr) 2019-11-15 2019-11-15 Marteau perforateur et/ou burin avec agencement de mécanisme de percussion

Publications (1)

Publication Number Publication Date
EP3822030A1 true EP3822030A1 (fr) 2021-05-19

Family

ID=68583194

Family Applications (2)

Application Number Title Priority Date Filing Date
EP19209441.5A Withdrawn EP3822030A1 (fr) 2019-11-15 2019-11-15 Marteau perforateur et/ou burin avec agencement de mécanisme de percussion
EP20800186.7A Pending EP4058245A1 (fr) 2019-11-15 2020-11-06 Ensemble mécanisme de percussion

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP20800186.7A Pending EP4058245A1 (fr) 2019-11-15 2020-11-06 Ensemble mécanisme de percussion

Country Status (4)

Country Link
US (1) US20220388137A1 (fr)
EP (2) EP3822030A1 (fr)
CN (1) CN114450128A (fr)
WO (1) WO2021094213A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3822036A1 (fr) * 2019-11-12 2021-05-19 Hilti Aktiengesellschaft Agencement de mécanisme de frappe
EP3822037A1 (fr) 2019-11-15 2021-05-19 Hilti Aktiengesellschaft Agencement de mécanisme de percussion
DE102021203064A1 (de) * 2021-03-26 2022-09-29 Robert Bosch Gesellschaft mit beschränkter Haftung Handwerkzeugmaschine mit einer Verriegelungseinrichtung
DE102021203063A1 (de) * 2021-03-26 2022-09-29 Robert Bosch Gesellschaft mit beschränkter Haftung Handwerkzeugmaschine mit einer Verriegelungseinrichtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2685274A (en) * 1951-04-12 1954-08-03 Phyllis E Liddicoat Pneumatic tool
EP0663270A1 (fr) * 1994-01-13 1995-07-19 Friedrich Duss Maschinenfabrik Gmbh & Co. Marteau à percussion rotative et/ou rectiligne
US20080217040A1 (en) * 2007-03-07 2008-09-11 Alexander Loeffler Hand-held power tool with pneumatic percussion mechanism
EP2199031A1 (fr) * 2007-09-13 2010-06-23 Makita Corporation Outil d'impact
EP2314420A1 (fr) * 2009-10-21 2011-04-27 Metabowerke GmbH Machine-outil électrique ayant un fonctionnement à marteau perforateur
WO2015000129A1 (fr) * 2013-07-02 2015-01-08 Chen Zhenyu Dispositif d'impact et machine-outil pour opération d'impact

Family Cites Families (15)

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Publication number Priority date Publication date Assignee Title
DE3633675A1 (de) * 1986-10-03 1988-04-14 Hilti Ag Bohrhammer mit schlagwerk
EP1238759B1 (fr) * 2001-03-07 2003-12-17 Black & Decker Inc. Marteau
JP4515181B2 (ja) * 2004-07-20 2010-07-28 株式会社マキタ 電動ハンマドリル
US7383895B2 (en) * 2005-08-19 2008-06-10 Makita Corporation Impact power tool
DE102006000395A1 (de) * 2006-08-07 2008-02-14 Hilti Ag Handwerkzeugmaschine mit pneumatischem Schlagwerk
DE102006046472A1 (de) * 2006-09-29 2008-04-03 Robert Bosch Gmbh Schlagvorrichtung
US7878265B2 (en) * 2007-02-06 2011-02-01 Makita Corporation Impact power tool
US7806201B2 (en) * 2007-07-24 2010-10-05 Makita Corporation Power tool with dynamic vibration damping
DE102008000727A1 (de) * 2008-03-18 2009-09-24 Robert Bosch Gmbh Tragbare Werkzeugmaschine, insbesondere Bohr- oder Schlaghammer, mit einer Schlägerfangeinrichtung und/oder Schlägerdämpfungseinrichtung
JP5147488B2 (ja) * 2008-03-27 2013-02-20 株式会社マキタ 作業工具
DE102008001957A1 (de) * 2008-05-26 2009-12-03 Robert Bosch Gmbh Bohr- und/oder Meißelhammer
JP5518617B2 (ja) * 2010-08-02 2014-06-11 株式会社マキタ 打撃工具
DE102012218882A1 (de) * 2012-10-17 2014-04-17 Robert Bosch Gmbh Handwerkzeugmaschinenvorrichtung
EP3231560A1 (fr) * 2016-04-13 2017-10-18 HILTI Aktiengesellschaft Machine-outil portative
CN209557569U (zh) * 2019-02-18 2019-10-29 徐氏巨龙(江苏)科技有限公司 一种用于电动车的液压减震机构

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2685274A (en) * 1951-04-12 1954-08-03 Phyllis E Liddicoat Pneumatic tool
EP0663270A1 (fr) * 1994-01-13 1995-07-19 Friedrich Duss Maschinenfabrik Gmbh & Co. Marteau à percussion rotative et/ou rectiligne
US20080217040A1 (en) * 2007-03-07 2008-09-11 Alexander Loeffler Hand-held power tool with pneumatic percussion mechanism
EP2199031A1 (fr) * 2007-09-13 2010-06-23 Makita Corporation Outil d'impact
EP2314420A1 (fr) * 2009-10-21 2011-04-27 Metabowerke GmbH Machine-outil électrique ayant un fonctionnement à marteau perforateur
WO2015000129A1 (fr) * 2013-07-02 2015-01-08 Chen Zhenyu Dispositif d'impact et machine-outil pour opération d'impact

Also Published As

Publication number Publication date
US20220388137A1 (en) 2022-12-08
WO2021094213A1 (fr) 2021-05-20
CN114450128A (zh) 2022-05-06
EP4058245A1 (fr) 2022-09-21

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