EP1987926A2 - Machine-outil à main avec mécanisme de percussion lubrifié - Google Patents

Machine-outil à main avec mécanisme de percussion lubrifié Download PDF

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Publication number
EP1987926A2
EP1987926A2 EP08103483A EP08103483A EP1987926A2 EP 1987926 A2 EP1987926 A2 EP 1987926A2 EP 08103483 A EP08103483 A EP 08103483A EP 08103483 A EP08103483 A EP 08103483A EP 1987926 A2 EP1987926 A2 EP 1987926A2
Authority
EP
European Patent Office
Prior art keywords
lubricant
hand tool
tool according
sealing means
lubricated
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Withdrawn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
EP08103483A
Other languages
German (de)
English (en)
Other versions
EP1987926A3 (fr
Inventor
Herbert Kramer
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
Publication of EP1987926A2 publication Critical patent/EP1987926A2/fr
Publication of EP1987926A3 publication Critical patent/EP1987926A3/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Withdrawn legal-status Critical Current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
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/26—Lubricating
    • 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
    • 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
    • B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D2217/0057—Details related to cleaning or cooling the tool or workpiece
    • B25D2217/0065—Use of dust covers
    • 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
    • B25D2250/345—Use of o-rings
    • 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
    • B25D2250/365—Use of seals

Definitions

  • the invention refers to an at least partially striking hand tool with a lubricated air spring impact mechanism, in particular a combination hammer or chisel hammer.
  • DE3039617 is arranged between a moving over an air spring airfoil and the front end of a tool an anvil which seals the lubricated percussion with the percussion piston dust and lubricant seal against the dust-loaded tool holder via an O-ring to its guide sleeve in a sealing plane.
  • the object of the invention is to further improve the sealing of a lubricated air spring striking mechanism of a hand tool.
  • any dust which penetrates into the lubricant space on the tool side and / or percussion lubricant penetrating the piston side forms a barrier and is bound in the barrier lubricant.
  • a contaminated barrier lubricant is simply renewable at the service.
  • the barrier lubricant consists of grease, further advantageously of a rolling bearing grease, whereby penetrating dusts and oils are reliably bound.
  • At least one sealing means is advantageously designed as a centering ring arranged fixedly in the guide (for example the guide sleeve for the tool or the flying piston) with a coaxially arranged inner seal, whereby the tribological stress takes place exclusively between the striker and the centering ring, both as predefined Wear parts can be replaced after their wear economically justifiable.
  • the centering ring consists of two axially assembled part ring discs, which are firmly connected to each other, advantageously radially einchapressbar, and between which an axially sealing dynamic seal such as an O-ring coaxially inside, whereby the centering ring is technologically easy to manufacture.
  • the centering coaxially outside a static seal such as a lamellar seal, whereby a coaxial outside to the guide sleeve any opening bypass is sealed.
  • a static seal such as a lamellar seal
  • FIG. 1 has a partially shown, axially striking hand tool 1 in the form of a chisel hammer mechanism 2 with a via an air spring 3 axially reciprocating flying piston 4, which strikes a striker 5, which to its two guides (here specifically the guide sleeves 6a, 6b for a tool 7 and for the flying piston 4) is sealed dust and lubricant tight over two axially offset sealing means 8.
  • a lubricant space 9 is formed, which contains a barrier lubricant 10 in the form of rolling bearing grease.
  • Both sealant 8 are as firmly in the guides (here specifically the guide sleeves 6a, 6b for the tool 7 and for the flying piston 4) arranged centering rings 11 with a coaxially arranged inside, dynamic seal 12 is formed.
  • the centering ring 11 itself consists of two axially assembled partial ring discs 13a, 13b, which are firmly pressed together radially and between which the axially sealing dynamic seal 12 is arranged coaxially inside in the form of an O-ring made of silicone rubber.
  • the centering ring 11 coaxial outside a static seal 14 in the form of a lamellar seal.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Portable Power Tools In General (AREA)
  • Sealing Devices (AREA)
EP08103483.7A 2007-05-03 2008-04-10 Machine-outil à main avec mécanisme de percussion lubrifié Withdrawn EP1987926A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007000255A DE102007000255A1 (de) 2007-05-03 2007-05-03 Handwerkzeugmaschine mit geschmiertem Schlagwerk

Publications (2)

Publication Number Publication Date
EP1987926A2 true EP1987926A2 (fr) 2008-11-05
EP1987926A3 EP1987926A3 (fr) 2013-09-25

Family

ID=39509193

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08103483.7A Withdrawn EP1987926A3 (fr) 2007-05-03 2008-04-10 Machine-outil à main avec mécanisme de percussion lubrifié

Country Status (5)

Country Link
US (1) US20080283260A1 (fr)
EP (1) EP1987926A3 (fr)
JP (1) JP2008272932A (fr)
CN (1) CN101298136A (fr)
DE (1) DE102007000255A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3335838A1 (fr) 2016-12-15 2018-06-20 HILTI Aktiengesellschaft Machine-outil portative

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007000391A1 (de) * 2007-07-19 2009-01-22 Hilti Aktiengesellschaft Handwerkzeugmaschine mit Schlagwerk
CN102371573A (zh) * 2010-08-10 2012-03-14 南京德朔实业有限公司 电动工具
DE102011078628A1 (de) * 2011-07-05 2013-01-10 Robert Bosch Gmbh chlagwerkvorrichtung
DE102013212527A1 (de) * 2013-06-27 2014-12-31 Robert Bosch Gmbh Schlagwerkkolbenvorrichtung
JP6198515B2 (ja) * 2013-08-08 2017-09-20 株式会社マキタ インパクト工具
WO2016101117A1 (fr) * 2014-12-23 2016-06-30 Techtronic Industries Company Limited Ensemble de lubrification de lame d'entraînement et mandrin de fixation le contenant
FR3037345B1 (fr) * 2015-06-11 2017-06-23 Montabert Roger Appareil hydraulique a percussions
EP3231560A1 (fr) * 2016-04-13 2017-10-18 HILTI Aktiengesellschaft Machine-outil portative
EP3260239A1 (fr) * 2016-06-24 2017-12-27 HILTI Aktiengesellschaft Machine-outil portative
FR3057483B1 (fr) * 2016-10-14 2019-04-19 Montabert Appareil a percussions pourvu d’un palier de guidage equipe d’un dispositif de centrage
CN213259295U (zh) 2017-10-20 2021-05-25 米沃奇电动工具公司 用于通过凿子在工件上执行开凿操作的冲击工具
EP3743245B1 (fr) 2018-01-26 2024-04-10 Milwaukee Electric Tool Corporation Outil à percussion
JP7236921B2 (ja) * 2019-04-18 2023-03-10 株式会社マキタ 打撃工具
DE102020203832A1 (de) * 2020-03-25 2021-09-30 Robert Bosch Gesellschaft mit beschränkter Haftung Handwerkzeugmaschine mit einem Rastenwerk

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3039617A1 (de) 1980-10-21 1982-05-19 Robert Bosch Gmbh, 7000 Stuttgart Bohrhammer
DE10019071A1 (de) 2000-04-18 2001-10-25 Hilti Ag Elekrohandwerkzeuggerät mit Leerschlagabschaltung
DE10030962A1 (de) 2000-06-24 2002-01-10 Hilti Ag Elektrohandwerkzeug mit Schlagwerk

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3224176C2 (de) * 1982-06-29 1995-02-02 Bosch Gmbh Robert Motorisch angetriebene schlagende Handwerkzeugmaschine
DE4100186A1 (de) * 1991-01-05 1992-07-09 Bosch Gmbh Robert Handwerkzeugmaschine mit abnehmbaren werkzeughalter
DE4215288A1 (de) * 1991-07-08 1993-01-14 Bosch Gmbh Robert Bohrhammer
DE10106034B4 (de) * 2001-02-09 2009-11-26 Robert Bosch Gmbh Handwerkzeugmaschine
ES2208623T3 (es) * 2001-03-07 2004-06-16 Black & Decker Inc. Martillo.
JP3976187B2 (ja) * 2002-11-20 2007-09-12 株式会社マキタ ハンマードリル
DE10362025B4 (de) * 2003-05-20 2006-02-09 Robert Bosch Gmbh Bohr- oder Schlaghammer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3039617A1 (de) 1980-10-21 1982-05-19 Robert Bosch Gmbh, 7000 Stuttgart Bohrhammer
DE10019071A1 (de) 2000-04-18 2001-10-25 Hilti Ag Elekrohandwerkzeuggerät mit Leerschlagabschaltung
DE10030962A1 (de) 2000-06-24 2002-01-10 Hilti Ag Elektrohandwerkzeug mit Schlagwerk

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3335838A1 (fr) 2016-12-15 2018-06-20 HILTI Aktiengesellschaft Machine-outil portative
WO2018108654A1 (fr) 2016-12-15 2018-06-21 Hilti Aktiengesellschaft Machine-outil portative
US11697198B2 (en) 2016-12-15 2023-07-11 Hilti Aktiengeselleschaft Hand-held power tool

Also Published As

Publication number Publication date
DE102007000255A1 (de) 2008-11-06
CN101298136A (zh) 2008-11-05
EP1987926A3 (fr) 2013-09-25
US20080283260A1 (en) 2008-11-20
JP2008272932A (ja) 2008-11-13

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