EP1340596B1 - Pneumatisches Schlagwerk - Google Patents
Pneumatisches Schlagwerk Download PDFInfo
- Publication number
- EP1340596B1 EP1340596B1 EP03405098A EP03405098A EP1340596B1 EP 1340596 B1 EP1340596 B1 EP 1340596B1 EP 03405098 A EP03405098 A EP 03405098A EP 03405098 A EP03405098 A EP 03405098A EP 1340596 B1 EP1340596 B1 EP 1340596B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- dolly
- free piston
- pot
- radial clearance
- striker
- 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.)
- Expired - Lifetime
Links
- 230000007246 mechanism Effects 0.000 title claims description 12
- 238000009527 percussion Methods 0.000 title description 5
- 238000013016 damping Methods 0.000 claims description 5
- 230000035515 penetration Effects 0.000 claims description 5
- 230000033001 locomotion Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Images
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
- B25D17/24—Damping the reaction force
-
- 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
- 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
- B25D2217/0015—Anvils
-
- 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
- B25D2250/131—Idling mode of tools
Definitions
- the invention refers to a pneumatic impact mechanism for an at least partially striking hand tool such as a chisel hammer or a hammer drill.
- a pneumatic percussion mechanism has a guided in a guide tube and driven by an air spring air piston, which usually strikes a limited axially movable striker, which hits even the front end of a limited axially movable tool.
- the DE 2 702 128 discloses a striking mechanism according to the preamble of claim 1 and therefore relates to the closest prior art.
- DE2702128 has a pneumatic impact mechanism as short as possible executed for a hammer, a cup-shaped flying pistons, in which radially inwardly an anvil penetrates. More on the doppelfopf pot-shaped hollow formed air piston are after the JP8141937 and JP7328955 previously known.
- the object of the invention consists in the technologically simple realization of a non-impact pneumatic impact mechanism short design.
- a pneumatic percussion for an at least partially striking hand tool on a pot-shaped flying pistons in the pot chamber radially inside a striker inside an axial penetration length penetrates and forms with this a damping, pneumatically active radial gap to substantially gas-tight closed pot space, which the through forcing the air piston axially driven striker within the penetration length to reverse the movement.
- the gap surface formed by the radial annular gap between the striker and the flying piston is 3% to 6% of the striker formed by the striker within the flying piston whereby a reversal of motion occurs at the usual flapping frequencies of 50Hz to 100Hz within 10mm.
- the gap thickness is 0.1 mm to 0.17 mm in conventional pneumatic percussion devices for handheld power tools with an approximately 50 g (0.050 kg) weighing striker and a pneumatically effective diameter of approx. 10 mm, which results in optimum results in test series ,
- a pneumatic percussion mechanism of a hand-held power tool has a cup-shaped flying piston 2, in which radially inside a striker 3 movably penetrates within a tool-axial penetration length L, which over part of its outer circumferential surface with a part of the inner surface of the Aero-piston 2 forms a damping, pneumatically active radial gap X to a substantially gas-tight closed pot chamber 4.
- Fig. 2 is at a pneumatically effective diameter D of the striker 3 of about 10mm, the thickness of the damping, radial radial gap X between 0.1 mm to 0.17 mm.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10209293A DE10209293A1 (de) | 2002-03-01 | 2002-03-01 | Pneumatisches Schlagwerk |
DE10209293 | 2002-03-01 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1340596A1 EP1340596A1 (de) | 2003-09-03 |
EP1340596B1 true EP1340596B1 (de) | 2010-02-03 |
Family
ID=27675174
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03405098A Expired - Lifetime EP1340596B1 (de) | 2002-03-01 | 2003-02-19 | Pneumatisches Schlagwerk |
Country Status (5)
Country | Link |
---|---|
US (1) | US20030221847A1 (zh) |
EP (1) | EP1340596B1 (zh) |
JP (1) | JP4340081B2 (zh) |
CN (1) | CN1442276A (zh) |
DE (2) | DE10209293A1 (zh) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005030340B3 (de) * | 2005-06-29 | 2007-01-04 | Wacker Construction Equipment Ag | Schlagwerk mit elektrodynamischem Linearantrieb |
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 |
JP2008012665A (ja) | 2006-07-01 | 2008-01-24 | Black & Decker Inc | 舗装破砕機用工具ホルダー |
US7413026B2 (en) | 2006-07-01 | 2008-08-19 | Black & Decker Inc. | Lubricant system for powered hammer |
DE102006000395A1 (de) * | 2006-08-07 | 2008-02-14 | Hilti Ag | Handwerkzeugmaschine mit pneumatischem Schlagwerk |
SE531658C2 (sv) * | 2006-10-02 | 2009-06-23 | Atlas Copco Rock Drills Ab | Slagverk jämte bergborrmaskin och bergborrigg |
DE102006060320A1 (de) | 2006-12-20 | 2008-06-26 | Robert Bosch Gmbh | Schlagwerk für eine Handwerkzeugmaschine |
US9216502B2 (en) | 2008-04-03 | 2015-12-22 | Black & Decker Inc. | Multi-stranded return spring for fastening tool |
US8534527B2 (en) | 2008-04-03 | 2013-09-17 | Black & Decker Inc. | Cordless framing nailer |
DE102011078628A1 (de) * | 2011-07-05 | 2013-01-10 | Robert Bosch Gmbh | chlagwerkvorrichtung |
KR101412092B1 (ko) * | 2013-11-28 | 2014-07-02 | 주식회사 엔와이테크 | 저소음형 유압 타격 장치 |
JP6638149B2 (ja) * | 2016-05-18 | 2020-01-29 | 株式会社マキタ | 打撃工具 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB173093A (en) * | 1920-10-07 | 1921-12-29 | Chicago Pneumatic Tool Co | Improvements in power hammers |
DE2702128C3 (de) * | 1977-01-20 | 1981-01-22 | Metabowerke Kg, Closs, Rauch & Schnizler, 7440 Nuertingen | Motorisch angetriebener Hammer, bei dem in einem Zylinder ein Kolben verschiebbar geführt ist |
DE2844086A1 (de) * | 1978-10-10 | 1980-04-30 | Bosch Gmbh Robert | Handwerkzeugmaschine, insbesondere schlaghammer |
DE2844109A1 (de) * | 1978-10-10 | 1980-04-24 | Bosch Gmbh Robert | Handwerkzeugmaschine, insbesondere bohr- und/oder schlaghammer |
DE2929191C2 (de) * | 1979-07-19 | 1984-08-02 | Metabowerke GmbH & Co, 7440 Nürtingen | Elektropneumatischer Hammer |
US4462467A (en) * | 1981-11-09 | 1984-07-31 | Hilti Aktiengesellschaft | Percussion drill machine |
US4582144A (en) * | 1984-04-25 | 1986-04-15 | Makita Electric Works, Ltd. | Percussive tools |
DE3804026A1 (de) * | 1987-12-21 | 1989-08-24 | Bosch Gmbh Robert | Motorisch angetriebener meissel- oder bohrhammer |
JPH07328955A (ja) * | 1994-06-09 | 1995-12-19 | Hitachi Koki Co Ltd | ハンマドリル |
DE10032949A1 (de) * | 2000-07-06 | 2002-01-17 | Hilti Ag | Schraubgerät |
-
2002
- 2002-03-01 DE DE10209293A patent/DE10209293A1/de not_active Withdrawn
-
2003
- 2003-02-19 DE DE50312392T patent/DE50312392D1/de not_active Expired - Lifetime
- 2003-02-19 EP EP03405098A patent/EP1340596B1/de not_active Expired - Lifetime
- 2003-02-27 CN CN03106726.3A patent/CN1442276A/zh active Pending
- 2003-02-27 US US10/376,007 patent/US20030221847A1/en not_active Abandoned
- 2003-02-28 JP JP2003052660A patent/JP4340081B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP4340081B2 (ja) | 2009-10-07 |
DE10209293A1 (de) | 2003-09-18 |
JP2003266332A (ja) | 2003-09-24 |
DE50312392D1 (de) | 2010-03-25 |
EP1340596A1 (de) | 2003-09-03 |
US20030221847A1 (en) | 2003-12-04 |
CN1442276A (zh) | 2003-09-17 |
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