EP0888851A2 - Appareil de forage - et/ou de percussion - Google Patents

Appareil de forage - et/ou de percussion Download PDF

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Publication number
EP0888851A2
EP0888851A2 EP98810564A EP98810564A EP0888851A2 EP 0888851 A2 EP0888851 A2 EP 0888851A2 EP 98810564 A EP98810564 A EP 98810564A EP 98810564 A EP98810564 A EP 98810564A EP 0888851 A2 EP0888851 A2 EP 0888851A2
Authority
EP
European Patent Office
Prior art keywords
drilling
drilling direction
elastic ring
stop
receiving area
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
EP98810564A
Other languages
German (de)
English (en)
Other versions
EP0888851A3 (fr
EP0888851B1 (fr
Inventor
Peter Gerold
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 EP0888851A2 publication Critical patent/EP0888851A2/fr
Publication of EP0888851A3 publication Critical patent/EP0888851A3/fr
Application granted granted Critical
Publication of EP0888851B1 publication Critical patent/EP0888851B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B25D16/006—Mode changers; Mechanisms connected thereto
    • 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
    • B25D16/003—Clutches specially adapted therefor

Definitions

  • the innovation concerns a drilling and / or chiseling device according to the preamble of Protection claim 1.
  • a device which has a striking mechanism with a Has guide cylinder and a tool holder.
  • the guide cylinder serves the Recording and guiding a percussion piston driven by a wobble mechanism and a flying piston driven by the percussion piston.
  • the end area of a central bore of the tool holder pointing in the direction of drilling a striker is axially displaceable.
  • the end face of the Döppers works in operation of the device with one insertion end in the tool holder used tool together. Which is opposite to the drilling direction Extending end region of the striker is cylindrical and has one reduced diameter.
  • This end area passes through a damping element that between a stop of the guide cylinder pointing in the drilling direction and one is arranged counter to the drilling direction of the striking surface.
  • the Damping element is used to dampen the bounce back and is composed from a stop disc that interacts with the die, one on which Stop of the guide cylinder supporting transmission element and one arranged between the stop disc and the transmission element elastic ring.
  • the stop of the guide cylinder is made by a locking element formed in the form of a locking ring on the inside of the guide cylinder protrudes into a circumferential recess.
  • this known device is very disadvantageous viewed in particular the difficult assembly of the damping element, because all parts of the damping element are individually introduced into the guide cylinder and have to be aligned. The subsequent insertion and insertion the locking ring using a suitable tool requires a lot Skill and a very high concentration. Since overall the installation of this known Damping element is very cumbersome, a lot of time is required for installation.
  • the innovation is based on the task of an assembly-friendly drilling and / or To create a chisel device in which the damping element is quick, easy and economical can be installed or removed.
  • the recording area which is designed in accordance with the innovation, is used for recording and Guide of the elastic ring and the stop disc.
  • the transmission element of the damping element is used for recording and large-scale transmission of the rebound energy emanating from the striker to the elastic ring. So that this transfer can take place, it is preferably the one with the stopper interacting stop plate in the receiving area of the transmission element Can be axially offset parallel to the drilling direction.
  • the spring characteristic of the damping element can be influenced by expediently the elastic ring in the receiving area of the transmission element is set under pretension. In this way, is already at the beginning of the axial compression of the elastic ring before an increased damping force.
  • the axial limitation of the Stop disc and the definition of the elastic ring by means of a positive with the transmission element cooperating locking element.
  • the Insert and fix the stop disc and the elastic ring in the The receiving area of the transmission element can be outside the drilling and chiseling device take place, so that the damping element as a unit in the drilling and chiseling device can be used.
  • the locking element is preferably formed from one into a circumferential one Deepening of the receiving area protruding locking ring is formed. Suitable for this there are, for example, circlips, which are commercially available as standardized components.
  • the recording area is advantageously from Limited inner wall of the cup-shaped transmission element.
  • the guide of the stop disc and the elastic ring over their Circumferential areas can take place, preferably corresponds to the inside diameter of the Recording area essentially the outer diameter of the stop disc and of the elastic ring.
  • the receiving area can be in the area of the elastic ring have a slightly larger inner diameter, so that an expansion of the elastic ring in the radial direction is possible if this when rebounding the Döppers is axially loaded.
  • the elastic ring expediently has a substantially elliptical cross section on, with the largest diameter of the cross section parallel to the drilling direction extends.
  • a coaxial alignment of the stop disc against one against the drilling direction pointing, all-round stop surface tapering in the drilling direction of the striker when these two components collide is achieved that the stop washer on the drilling direction side of the guide area a conical, at least partially circumferential stop shoulder has, which widens in the direction of drilling.
  • the drilling and / or chiseling device shown in FIG. 1 has a housing 2 on which a handle 6 and in an end region pointing counter to the drilling direction a switch 61 is located. In the immediate area of the handle 6 protrudes essentially perpendicular from the housing 2 from an electric cable 5, which is not shown Electric motor in the housing 2 via the switch 61 with an external power source connects.
  • a tool holder 1 is located in the end area on the drilling direction arranged, the inclusion of a drilling and chiseling tool, not shown serves.
  • the tool holder 1 is axially connected to the housing 2 by means of a flange 3 connected.
  • the connection between flange 3 and housing 2 is made by means of several Screw connections, not shown.
  • a side handle 4 which projects laterally from the housing 2 and is fixed on a cylindrical region of the housing 2.
  • Fig. 2 From Fig. 2 it can be seen that the tool holder 1 against one another End region extending drilling direction with a central bore in which a Crosspiece 9 is axially displaceable.
  • the free end of the end area of the tool holder 1 has a radial extension with an annular surface pointing in the direction of drilling, via which the tool holder 1 by means of a flange 3 on the housing 2 of the Drilling and chiseling device can be fixed axially. Screw connections between the Flange 3 and the housing 2 are not shown.
  • a damping element 8 which is tapered by a counter to the Drilling direction extending cylindrical end portion 91 of the die 9 passes axially is.
  • the damping element 8 serves to rebound the striker 9 and settles together from a cup-shaped transmission element 81 with a in Drilling direction designed open receiving area, one axially in the receiving area limited displaceable stop disc 86 and an elastic ring 83 between the Stop disc 86 and the transmission element 81.
  • the receiving area is from the inner wall 82 of the cup-shaped transmission element 81 is limited and the outer diameter of the stop disc 86 and the elastic ring 83 correspond essentially to the inside diameter of the receiving area.
  • the area of the elastic ring 83 has a larger diameter on, so that a radial deformation of the elastic ring 83 can take place, if this is loaded axially.
  • the stop disc 86 and the elastic ring 83 are by means of a locking element 84 fixed in the form of a locking ring in the receiving area, the elastic ring 83 may be biased, for example.
  • the locking ring protrudes into a circumferential recess, which on the inner wall 82 of the Recording area is arranged.
  • the depression is located on the drilling direction side End area of the recording area.
  • the guide area of the stop disc 86 prevents it from bouncing off or knocking out the locking ring from the recess of the receiving area.
  • the elastic ring 83 is made of an elastic material, for example made of rubber.
  • the stop disk 86 has on the end face of the guide region on the drilling direction side a conical, at least partially circumferential stop shoulder 87, which widens in the direction of drilling and with an all-round, in Interacting drilling direction expanding surface 92 of the striker 9 cooperates.
  • the damping element 8 is in a cylindrical receiving area on the drilling direction side arranged and supported against the direction of drilling on one of the front side of a Guide cylinder 73 formed stop 74.
  • the guide cylinder 73 belongs to a striking mechanism 7, not shown in full, of which a percussion piston 71, and a flying piston 72 are shown.
  • the damping element 8 can for example axially displaceable in the drilling direction side, cylindrical receiving area of the Guide cylinder 73 may be arranged when this can also be axially displaced, for example is arranged in the housing 2.
  • the guide cylinder 73 has radially extending Passage openings 75 on the venting of the striking mechanism 7 during serve the operation of the device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Drilling And Boring (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
EP98810564A 1997-07-04 1998-06-19 Appareil de forage - et/ou de percussion Expired - Lifetime EP0888851B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29711704U DE29711704U1 (de) 1997-07-04 1997-07-04 Bohr- und/oder Meißelgerät
DE29711704U 1997-07-04

Publications (3)

Publication Number Publication Date
EP0888851A2 true EP0888851A2 (fr) 1999-01-07
EP0888851A3 EP0888851A3 (fr) 2003-01-08
EP0888851B1 EP0888851B1 (fr) 2006-11-08

Family

ID=8042581

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98810564A Expired - Lifetime EP0888851B1 (fr) 1997-07-04 1998-06-19 Appareil de forage - et/ou de percussion

Country Status (4)

Country Link
US (1) US5996708A (fr)
EP (1) EP0888851B1 (fr)
JP (1) JP4195125B2 (fr)
DE (2) DE29711704U1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6241026B1 (en) 1999-05-08 2001-06-05 Black & Decker Inc. Rotary hammer
CN104249337A (zh) * 2013-06-28 2014-12-31 罗伯特·博世有限公司 冲击机构装置

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10106050B4 (de) * 2001-02-09 2017-02-16 Hilti Aktiengesellschaft Handwerkzeugmaschine mit einem Zusatzhandgriff
ATE256533T1 (de) * 2001-03-07 2004-01-15 Black & Decker Inc Hammer
CN1329164C (zh) 2001-09-17 2007-08-01 密尔沃基电动工具公司 旋转锤
GB2401570B (en) * 2003-05-12 2006-07-05 Black & Decker Inc Spindle assembly for hammer drill
DE10323606B4 (de) * 2003-05-20 2005-04-14 Robert Bosch Gmbh Elastische Döpperführung
EP1504852B1 (fr) * 2003-08-06 2010-04-21 Hitachi Koki Co., Ltd. Perceuse à percussion
TWM293826U (en) * 2006-01-10 2006-07-11 Shuen Tai Prec Entpr Co Ltd Portable power hammer chisel having shock absorbing guiding sleeve
WO2007141080A1 (fr) * 2006-06-06 2007-12-13 Robert Bosch Gmbh Mécanisme de percussion avec un percuteur et un dispositif d'arrêt affecté
US7624815B2 (en) 2006-07-01 2009-12-01 Black & Decker Inc. Powered hammer with vibration dampener
AU2007202963A1 (en) 2006-07-01 2008-01-17 Black & Decker, Inc. A beat piece wear indicator for a hammer drill
US7401661B2 (en) 2006-07-01 2008-07-22 Black & Decker Inc. Lubricant pump for powered hammer
US7413026B2 (en) 2006-07-01 2008-08-19 Black & Decker Inc. Lubricant system for powered hammer
AU2007202967A1 (en) 2006-07-01 2008-01-17 Black & Decker, Inc. A tool holder for a pavement breaker
DE102006000395A1 (de) * 2006-08-07 2008-02-14 Hilti Ag Handwerkzeugmaschine mit pneumatischem Schlagwerk
JP5100171B2 (ja) * 2007-03-27 2012-12-19 株式会社マキタ 衝撃式作業工具
JP5154995B2 (ja) * 2008-03-28 2013-02-27 株式会社マキタ 打撃工具
US8636081B2 (en) 2011-12-15 2014-01-28 Milwaukee Electric Tool Corporation Rotary hammer
DE102010044011A1 (de) * 2010-11-16 2012-05-16 Hilti Aktiengesellschaft Handwerkzeugmaschine
DE102011078628A1 (de) * 2011-07-05 2013-01-10 Robert Bosch Gmbh chlagwerkvorrichtung
US10534606B2 (en) 2011-12-08 2020-01-14 Oracle International Corporation Run-length encoding decompression
SE537773C2 (sv) 2012-02-17 2015-10-13 Tools Pc Ab Const Slaganordning innehållande en rekyldämpare
US11113054B2 (en) 2013-09-10 2021-09-07 Oracle International Corporation Efficient hardware instructions for single instruction multiple data processors: fast fixed-length value compression
US20180180128A1 (en) * 2015-06-29 2018-06-28 Terminator Ip Limited Shock absorbing tool connection
US10599488B2 (en) 2016-06-29 2020-03-24 Oracle International Corporation Multi-purpose events for notification and sequence control in multi-core processor systems
US10380058B2 (en) 2016-09-06 2019-08-13 Oracle International Corporation Processor core to coprocessor interface with FIFO semantics
US10783102B2 (en) 2016-10-11 2020-09-22 Oracle International Corporation Dynamically configurable high performance database-aware hash engine
US10459859B2 (en) 2016-11-28 2019-10-29 Oracle International Corporation Multicast copy ring for database direct memory access filtering engine
US10176114B2 (en) 2016-11-28 2019-01-08 Oracle International Corporation Row identification number generation in database direct memory access engine
US10725947B2 (en) 2016-11-29 2020-07-28 Oracle International Corporation Bit vector gather row count calculation and handling in direct memory access engine
EP4219082A1 (fr) 2017-07-31 2023-08-02 Milwaukee Electric Tool Corporation Outil électrique rotatif
EP3697574A1 (fr) 2017-10-20 2020-08-26 Milwaukee Electric Tool Corporation Outil à percussion
CN214723936U (zh) 2018-01-26 2021-11-16 米沃奇电动工具公司 冲击工具

Citations (4)

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Publication number Priority date Publication date Assignee Title
US4646852A (en) * 1985-02-14 1987-03-03 Senco Products, Inc. Pneumatic mallet
US5050687A (en) * 1988-09-23 1991-09-24 Prokhorov Ivan A Compression-vacuum action percussive machine
US5099926A (en) * 1990-04-05 1992-03-31 Makita Corporation Impact tool
US5407018A (en) * 1994-01-10 1995-04-18 Tc Services Pneumatic impact tool having improved vibration and noise attenuation

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US2035643A (en) * 1934-06-25 1936-03-31 Independent Pneumatic Tool Co Cushioning means for tools
US3266581A (en) * 1963-11-01 1966-08-16 Mechanical Res Corp Vibrationless power tool
US3625295A (en) * 1970-02-12 1971-12-07 Kent Air Tool Co Airhammer
DE3224176C2 (de) * 1982-06-29 1995-02-02 Bosch Gmbh Robert Motorisch angetriebene schlagende Handwerkzeugmaschine
US4653596A (en) * 1983-04-05 1987-03-31 Institut Gornogo Dela Sibirskogo Otdelenia An Sssr Percussive air tool
DE3504650C2 (de) * 1985-02-12 1994-01-20 Bosch Gmbh Robert Bohrhammer mit Verstärkung der Betätigungskraft für die Kupplung des Schlagantriebes
DE3506695A1 (de) * 1985-02-26 1986-08-28 Robert Bosch Gmbh, 7000 Stuttgart Bohrhammer
US5363835A (en) * 1992-08-31 1994-11-15 Rocktec Limited Nose block assembly
JP3424870B2 (ja) * 1995-02-28 2003-07-07 株式会社マキタ 打撃工具の空打ち防止装置
JP3459493B2 (ja) * 1995-05-25 2003-10-20 株式会社マキタ 打撃工具

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4646852A (en) * 1985-02-14 1987-03-03 Senco Products, Inc. Pneumatic mallet
US5050687A (en) * 1988-09-23 1991-09-24 Prokhorov Ivan A Compression-vacuum action percussive machine
US5099926A (en) * 1990-04-05 1992-03-31 Makita Corporation Impact tool
US5407018A (en) * 1994-01-10 1995-04-18 Tc Services Pneumatic impact tool having improved vibration and noise attenuation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6241026B1 (en) 1999-05-08 2001-06-05 Black & Decker Inc. Rotary hammer
CN104249337A (zh) * 2013-06-28 2014-12-31 罗伯特·博世有限公司 冲击机构装置
CN104249337B (zh) * 2013-06-28 2018-08-17 罗伯特·博世有限公司 冲击机构装置

Also Published As

Publication number Publication date
JPH1177558A (ja) 1999-03-23
US5996708A (en) 1999-12-07
DE59813790D1 (de) 2006-12-21
EP0888851A3 (fr) 2003-01-08
DE29711704U1 (de) 1997-09-04
EP0888851B1 (fr) 2006-11-08
JP4195125B2 (ja) 2008-12-10

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