EP0194347A1 - Suspension à ressort d'un carter protecteur auquel sont fixées les poignées d'un outil à percussion - Google Patents

Suspension à ressort d'un carter protecteur auquel sont fixées les poignées d'un outil à percussion Download PDF

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Publication number
EP0194347A1
EP0194347A1 EP85115109A EP85115109A EP0194347A1 EP 0194347 A1 EP0194347 A1 EP 0194347A1 EP 85115109 A EP85115109 A EP 85115109A EP 85115109 A EP85115109 A EP 85115109A EP 0194347 A1 EP0194347 A1 EP 0194347A1
Authority
EP
European Patent Office
Prior art keywords
hammer
hood
housing
protective hood
hammer 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
Application number
EP85115109A
Other languages
German (de)
English (en)
Other versions
EP0194347B1 (fr
Inventor
Martin Greppmair
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.)
Wacker Werke GmbH and Co KG
Original Assignee
Wacker Werke GmbH and Co KG
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 Wacker Werke GmbH and Co KG filed Critical Wacker Werke GmbH and Co KG
Publication of EP0194347A1 publication Critical patent/EP0194347A1/fr
Application granted granted Critical
Publication of EP0194347B1 publication Critical patent/EP0194347B1/fr
Expired 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
    • B25D17/04—Handles; Handle mountings
    • B25D17/043—Handles resiliently mounted relative to the hammer housing
    • 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
    • B25D17/11—Arrangements of noise-damping means

Definitions

  • the invention relates to a motor-driven hammer according to the preamble of patent claim 1.
  • the guard's job to protect the operator from the heat radiation from the hot engine parts and from direct contact with them, the noise emitted from the engine into the environment, especially the operator back to attenuate d / the operator before
  • the noise emitted from the engine into the environment especially the operator back to attenuate d / the operator before
  • the protective hood fulfills the further task of cushioning the handle and thus preventing health damage from the operator and increasing the ease of use for the operator.
  • the protective hood is on several / + and
  • the protective hood is then in direct contact with the hammer housing and largely loses its ability to perform the task assigned to it according to the above.
  • the protective hood of the known hammers is also largely reduced in function with increasing working pressure exerted by the operator on the handles. The same also applies to a pull on the handles, which the operator has to use, for example, when trying to pull out a chisel that has become stuck in the concrete while working with the hammer.
  • the invention has for its object to design hammers according to the preamble of claim 1 so that the protective hood has no way to come into contact with the hammer housing that both handles, so left and right, regardless of the size of the loading Serving pressure exerted are always equally cushioned that a bumping of the sprung hood with the hammer housing is excluded even under high pressure and tensile forces exerted by the operator on the handles and that the handle cushioning is very soft in normal working areas during normal work, so that for the operator can hardly feel any vibrations.
  • the swing arms provided according to the invention, arranged and attached to the protective hood and motor housing result in permanent forced parallel guidance of the protective hood with respect to the hammer housing and reliably prevent any tilting.
  • the suspension of the swing arms via torque bushings enables a very flat, largely linear spring characteristic in the normal working area, and the limitation of this normal working area by elastic stops with progressively increasing spring characteristics allows the application of high tensile and compressive forces on the handles without the risk of bumping.
  • With the protective hood hammers can be operated in an unprecedented way, be it with a combustion engine, be it with an electric motor or other motors.
  • the hammer according to FIGS. 1 to 3 has a hammer housing 1, which also includes the motor parts to which other parts can be attached.
  • the motor which is not shown in more detail above, can be a combustion or electric motor, in principle also a different type of energy source, for example a hydraulic motor or pneumatic motor.
  • the hammer housing 1 is enclosed on all sides by a protective hood 2 which at least surrounds the motor area, but which can also extend over at least part of the hammer shaft 3 in which the striking mechanism is located.
  • the cover 2 is forcibly guided parallel to the longitudinal axis of the Hammmers and transmits the arranged on both sides of normal handgrips 5 as well as the auxiliary handle 6, to the operator for converting the device and for directing the hammer benö- ti g t.
  • the parallel guidance between the hammer 1, 3 and the protective hood 2 is provided by two pairs of swing arms 7a, 7b and 8a, 8b, which are arranged on one or the other side parallel to one another and one above the other in it and one end each on the protective hood 2 and the other end are each rotatably mounted on the hammer housing 2.
  • the arms 7a, 7b, 8a and 8b each have stub axles 9 which extend from them perpendicular to the protective hood or to the hammer housing.
  • the stub axles 9 simply engage in bearing bores in bearing blocks 10 on the protective hood 2 at the corresponding one ends of the swing arms, while the stub axles located on the corresponding other ends of the pivot arms with torsion bushings 11 fastened in the hammer housing are rotatably connected, for example Sit circumferentially in the hammer housing 1.
  • the torsion bushes have a relatively large elasticity, so that they provide a soft cushioning of the swing arms 7a, 7b, 8a and 8b against the hammer housing 1, the spring force of which changes only little over a relatively large range of mutual parallel displacement of the hammer housing 1 and protective hood 2.
  • the aforementioned range of movement with soft cushioning between the hammer housing 1 and protective hood 2 or the corresponding pivoting range of the swing arms is by resiliently interacting stops 12, 13 and 14, 15 between the protective hood 2 and the hammer housing 1 elastically limited, the stops 12, 13 effect the limitation in one relative movement direction and the stops 14, 15 effect the limitation in the opposite direction.
  • the cooperating stops 12, 13 on the one hand and 14, 15 on the other hand each consist of a rigid stop 12 or 14 attached to the inside of the protective hood and a counter stop 13 or 15 made of an elastic material, which is fastened to the hammer housing 1 in each case.
  • Shape and material of the elastic stoppers 13 and 15 are chosen so that a progressive spring characteristic for the cooperating stops 12, 13 and 14, 15, for example, be the one that strength in F. 7 is shown.
  • a particularly suitable material for creating such a spring characteristic is, for example, elastic foamed polyurethane.
  • For the T or-sion sockets also is particularly suitable elastic polyurethane which is not foamed ..
  • the respective upper and the respective lower swing arms 7a, 8a and 7b, 8b are rigidly connected to one another by connecting links 16, which will soon have a swing bracket with them. Ezne salche rigid connection is particularly recommended where the protective hood 2 does not have such inherent rigidity that a synchronism of the swing arms can be enforced via it alone.
  • the protective hood 2 is so high that it does not come into contact with the upper side of the hammer housing 1 even with the strongest rated pressure or rated pull on the handles 5.
  • the interacting stops 12, 13 on the one hand and 14, 15 on the other hand can be designed with different progressive spring characteristics for different consideration of tension and pressure. It recommends yourself to adjust these interacting stops adjustable (not shown) in order to be able to adapt the spring characteristics to different application tasks of the hammer.
  • FIGS. 4-6 largely corresponds to that according to FIGS. 1-3. The only difference is the arrangement of the pivot and spring points for the swing arms 7a, 7b, 8a, 8b.
  • the stub axles 9 ' not only engage in a torsion bushing 11' at one end of the respective swing arm, but also in such a torsion bushing at both ends.
  • At one end are the torsion bushes in the hammer housing and at the other end in bearing blocks 10 'attached to the wall of the protective hood 2 facing the operator.
  • the respective upper and lower stub axles 9 ' are connected to one another to form a continuous rod, which at the same time effects the rigid connection between the swing arms 7a, 8a and 7b, 8b on both sides.
  • the distribution of the torsional elasticity over all eight stub axles or pivot points does require a greater effort, but results in an even more favorable suspension characteristic for the normal working area.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
EP85115109A 1984-12-24 1985-11-28 Suspension à ressort d'un carter protecteur auquel sont fixées les poignées d'un outil à percussion Expired EP0194347B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3447401 1984-12-24
DE19843447401 DE3447401A1 (de) 1984-12-24 1984-12-24 Hammer mit schutzhaube

Publications (2)

Publication Number Publication Date
EP0194347A1 true EP0194347A1 (fr) 1986-09-17
EP0194347B1 EP0194347B1 (fr) 1989-02-01

Family

ID=6253896

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85115109A Expired EP0194347B1 (fr) 1984-12-24 1985-11-28 Suspension à ressort d'un carter protecteur auquel sont fixées les poignées d'un outil à percussion

Country Status (4)

Country Link
US (1) US4673043A (fr)
EP (1) EP0194347B1 (fr)
JP (1) JPS61159387A (fr)
DE (1) DE3447401A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0294351A2 (fr) * 1987-06-01 1988-12-07 Breakers A/S Poignée de machine avec amortissement des vibrations
GB2230728A (en) * 1989-04-17 1990-10-31 Kioritz Corp Engine hammer
EP0440399A1 (fr) * 1990-01-27 1991-08-07 John Macdonald & Company (Pneumatic Tools) Limited Améliorations des outils pneumatiques
CN104511885A (zh) * 2013-09-27 2015-04-15 株式会社牧田 冲击工具
CN106089029A (zh) * 2016-07-31 2016-11-09 成都聚合追阳科技有限公司 一种聚光光伏发电系统石头地基打孔机
CN106246100A (zh) * 2016-07-31 2016-12-21 成都聚合追阳科技有限公司 一种聚光光伏发电系统石头地基打孔工艺

Families Citing this family (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8907410D0 (en) * 1989-04-01 1989-05-17 Macdonald Pneumatics Paving breakers and supports therefor
DE4000861C3 (de) * 1990-01-13 1999-04-08 Atlas Copco Electric Tools Handgeführte Schlagbohrmaschine mit Schwingungsdämpfung
SE503979C2 (sv) * 1995-07-13 1996-10-14 Berema Atlas Copco Ab Avvibrerat maskindrivet verktyg med bladfjäder upphängd vaggartad upphängningsanordning
DE19730356C2 (de) * 1997-07-15 2001-05-17 Wacker Werke Kg Schwingungsgedämpfter Aufbruch- und/oder Bohrhammer
US5769174A (en) * 1996-12-18 1998-06-23 Ingersoll-Rand Company Parallel displacement single axis vibration isolator
US6082468A (en) * 1998-04-20 2000-07-04 Snap-On Tools Company Interchangeable grips for power hand tools
AU5090500A (en) * 1999-06-10 2001-01-02 Macdonald Air Tools Limited Pneumatic tool
EP1166971A3 (fr) * 2000-06-27 2004-01-02 Framatome Connectors International Système d'armortissement pour les poignées d'outils
DE10136015A1 (de) * 2001-07-24 2003-02-13 Bosch Gmbh Robert Handwerkzeugmaschine mit vibrationsgedämpftem Handgriff
JP2003145446A (ja) * 2001-11-09 2003-05-20 Yamada Kikai Kogyo Kk エンジンブレーカ
US8047302B2 (en) * 2001-12-21 2011-11-01 Wacker Neuson Produktion GmbH & Co. KG Drilling and/or striking hammer with a lubricating device
GB2402098B (en) * 2003-05-21 2007-10-17 Black & Decker Inc Vibration reduction apparatus for power tool and power tool incorporating such apparatus
GB2407790A (en) * 2003-11-04 2005-05-11 Black & Decker Inc Vibration reduction apparatus for a power tool
GB2407789A (en) * 2003-11-04 2005-05-11 Black & Decker Inc Vibration reduction apparatus for a power tool
DE10357758A1 (de) * 2003-12-10 2005-07-21 Wacker Construction Equipment Ag Aufbruch- und/oder Bohrhammer mit linear geführter Griffeinrichtung
DE102004019776A1 (de) * 2004-04-23 2005-11-17 Robert Bosch Gmbh Handwerkzeugmaschine, insbesondere Bohr- und/oder Schlaghammer
GB2414702A (en) * 2004-06-04 2005-12-07 Black & Decker Inc Vibration Reduction Apparatus for Power Tool
DE102004041219A1 (de) * 2004-08-26 2006-03-02 Robert Bosch Gmbh Handwerkzeugmaschinengriffvorrichtung mit einer Vibrationsabschirmeinheit
DE102004048681A1 (de) * 2004-10-06 2006-04-13 Wacker Construction Equipment Ag Aufbruchhammer mit Mehrfachgreifsystem
DE602005007166D1 (de) * 2004-12-23 2008-07-10 Black & Decker Inc Kraftwerkzeuggehäuse
GB0428348D0 (en) * 2004-12-24 2005-02-02 Bamford Excavators Ltd Percussion power tool apparatus
SE529839C2 (sv) * 2005-05-26 2007-12-04 Atlas Copco Constr Tools Ab Brytverktyg med avvibrerad handtagsanordning
BRPI0504616A (pt) * 2005-06-08 2006-04-11 Embraer Aeronautica Sa revestimento antivibração das pegas dos marteletes pneumáticos para aeronaves
DE102006016442A1 (de) * 2006-04-07 2007-10-11 Robert Bosch Gmbh Handwerkzeugmaschine mit vibrationsgedämpftem Handgriff
DE102006021307A1 (de) * 2006-05-08 2007-11-15 Robert Bosch Gmbh Handwerkzeugmaschine mit einem vibrationsgedämpften Handgriff
US7401661B2 (en) 2006-07-01 2008-07-22 Black & Decker Inc. Lubricant pump for powered hammer
US20080006419A1 (en) * 2006-07-01 2008-01-10 Black & Decker Inc. Tool holder connector for powered hammer
AU2007202968A1 (en) * 2006-07-01 2008-01-17 Black & Decker, Inc. A pavement breaker
JP2008012661A (ja) 2006-07-01 2008-01-24 Black & Decker Inc ハンマードリル用のビートピース磨耗表示器
EP1872913B1 (fr) * 2006-07-01 2015-08-19 Black & Decker, Inc. Porte-outil pour un marteau-piqueur
US7413026B2 (en) * 2006-07-01 2008-08-19 Black & Decker Inc. Lubricant system for powered hammer
DE102006000374A1 (de) * 2006-07-27 2008-01-31 Hilti Ag Handwerkzeuggerät mit Entkopplungsanordnung
DE102006052807A1 (de) * 2006-11-09 2008-05-15 Robert Bosch Gmbh Handwerkzeugmaschine mit einem vibrationsgedämpften Bügelhandgriff
GB2431133A (en) * 2007-01-17 2007-04-18 Black & Decker Inc A power tool with vibration reduction apparatus
DE102007000093A1 (de) * 2007-02-15 2008-08-21 Hilti Ag Handwerkzeuggerät
GB0801304D0 (en) * 2008-01-24 2008-03-05 Black & Decker Inc Hammer drill
DE102008001829A1 (de) * 2008-05-16 2009-11-19 Robert Bosch Gmbh Handwerkzeugmaschine, insbesondere Akku-Schrauber bzw. Akku-Bohrer
JP5728338B2 (ja) * 2011-09-07 2015-06-03 株式会社マキタ 電動工具用集塵装置及び電動工具
DE102011089718A1 (de) * 2011-12-23 2013-06-27 Robert Bosch Gmbh Werkzeugmaschine
US9815186B2 (en) 2014-10-09 2017-11-14 Caterpillar Inc. Shroud member for a powered hammer
JP6440118B2 (ja) * 2015-03-10 2018-12-19 パナソニックＩｐマネジメント株式会社 インパクト回転工具
GB201518088D0 (en) * 2015-10-13 2015-11-25 Black & Decker Inc Pavement Breaker
WO2018153226A1 (fr) * 2017-02-23 2018-08-30 The Hongkong Polytechnic University Appareil amélioré de réduction passive des vibrations
CN116908983B (zh) * 2023-06-27 2024-05-31 昆山市建设工程质量检测中心 一种钻孔直埋式光缆下放防扭转装置及方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2630784A (en) * 1949-06-20 1953-03-10 Lord Mfg Co Cushion handle for percussive tools
DE1011819B (de) * 1953-02-17 1957-07-04 Goetzewerke Presslufthandhammer
GB1071643A (en) * 1964-09-15 1967-06-07 Westinghouse Air Brake Co An improved handle frame assembly for a percussive tool
US4060138A (en) * 1976-07-08 1977-11-29 Post Office Vibratory tools
EP0033304A1 (fr) * 1980-01-24 1981-08-05 Atlas Copco Aktiebolag Dispositif pour machines à percussion portatives
DE3035351A1 (de) * 1980-09-19 1982-05-06 Wacker-Werke Gmbh & Co Kg, 8077 Reichertshofen Hammer mit verbrennungsmotor

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US3275089A (en) * 1963-11-05 1966-09-27 Westinghouse Air Brake Co Handle means for percussive tool
US4014392A (en) * 1973-03-01 1977-03-29 Ross Frederick W Stabilized piston-cylinder impact device
US4102410A (en) * 1975-03-19 1978-07-25 Ross Frederick W Resilient work-coupled impact device
SU1017491A1 (ru) * 1980-07-16 1983-05-15 Всесоюзный Научно-Исследовательский И Проектно-Конструкторский Институт Механизированного И Ручного Строительно-Монтажного Инструмента,Вибраторов И Строительно-Отделочных Машин Машина ударного действи

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2630784A (en) * 1949-06-20 1953-03-10 Lord Mfg Co Cushion handle for percussive tools
DE1011819B (de) * 1953-02-17 1957-07-04 Goetzewerke Presslufthandhammer
GB1071643A (en) * 1964-09-15 1967-06-07 Westinghouse Air Brake Co An improved handle frame assembly for a percussive tool
US4060138A (en) * 1976-07-08 1977-11-29 Post Office Vibratory tools
EP0033304A1 (fr) * 1980-01-24 1981-08-05 Atlas Copco Aktiebolag Dispositif pour machines à percussion portatives
DE3035351A1 (de) * 1980-09-19 1982-05-06 Wacker-Werke Gmbh & Co Kg, 8077 Reichertshofen Hammer mit verbrennungsmotor

Non-Patent Citations (2)

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Title
PATENTS ABSTRACTS OF JAPAN, Band 7, Nr. 157 (M-227) [1302], 9. Juli 1983; & JP - A - 58 65 343 (BRIDGESTONE TIRE K.K.) 19-04-1983 *
THE ENGINEER, Band 239, Nr. 6175, Juli 1974, Seite 17, London, GB; Long-life springing" *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0294351A2 (fr) * 1987-06-01 1988-12-07 Breakers A/S Poignée de machine avec amortissement des vibrations
EP0294351A3 (en) * 1987-06-01 1990-04-25 A/S Wejra Vibration dampened machine handle
GB2230728A (en) * 1989-04-17 1990-10-31 Kioritz Corp Engine hammer
GB2230728B (en) * 1989-04-17 1992-10-21 Kioritz Corp Engine hammer
EP0440399A1 (fr) * 1990-01-27 1991-08-07 John Macdonald & Company (Pneumatic Tools) Limited Améliorations des outils pneumatiques
CN104511885A (zh) * 2013-09-27 2015-04-15 株式会社牧田 冲击工具
CN106089029A (zh) * 2016-07-31 2016-11-09 成都聚合追阳科技有限公司 一种聚光光伏发电系统石头地基打孔机
CN106246100A (zh) * 2016-07-31 2016-12-21 成都聚合追阳科技有限公司 一种聚光光伏发电系统石头地基打孔工艺

Also Published As

Publication number Publication date
US4673043A (en) 1987-06-16
JPH0375314B2 (fr) 1991-11-29
DE3447401C2 (fr) 1988-09-08
EP0194347B1 (fr) 1989-02-01
DE3447401A1 (de) 1986-07-03
JPS61159387A (ja) 1986-07-19

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