EP1340596A1 - Pneumatisches Schlagwerk - Google Patents
Pneumatisches Schlagwerk Download PDFInfo
- Publication number
- EP1340596A1 EP1340596A1 EP03405098A EP03405098A EP1340596A1 EP 1340596 A1 EP1340596 A1 EP 1340596A1 EP 03405098 A EP03405098 A EP 03405098A EP 03405098 A EP03405098 A EP 03405098A EP 1340596 A1 EP1340596 A1 EP 1340596A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flying piston
- striker
- pneumatic
- radial
- radial gap
- 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
Links
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 relates to a pneumatic hammer mechanism for an at least partially hitting hand machine tool such as a chisel hammer or hammer drill.
- a pneumatic percussion mechanism has a guided and in a guide tube an air spring powered flying piston, which is usually limited to one axially movable striker strikes itself on the front end of a limited axially movable Tool meets.
- Pneumatic striking mechanisms occur under certain working conditions such as missing Back pressure from the workpiece a look up of the die on the tool, which according to DE3804026 about air passages in the flying piston and a rotatable Guide tube is prevented.
- the object of the invention is the technologically simple implementation of a Pneumatic striking mechanism of short design without reference.
- a pneumatic striking mechanism for at least partially the hand-held machine tool strikes a pot-shaped flying piston in its pot space radially inside an anvil penetrates movably within an axial penetration length and with this a damping, pneumatically effective radial gap essentially forms a gastight closed pot space, which is axially by the flying piston driven striker forces within the penetration length to reverse movement.
- the radial annular gap between the anvil and the flying piston is advantageous formed gap area 3% to 6% of the inside of the flying piston by the anvil formed cross-section of the crosspiece, which results in the usual beat frequencies from 50Hz to 100Hz within 10mm there is a reversal of movement.
- Hand tool 1 shows one shown in the empty stroke case at the reversal point of movement
- Hand tool 1 has a cup-shaped flying piston 2, in which a radially inside Döpper 3 penetrates movably within an axial penetration length L on the tool side over part of its outer surface with part of the inner surface of the Flying piston 2 a damping, pneumatically effective radial gap X to an im forms essentially gas-tight closed pot space 4.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
Description
Claims (3)
- Pneumatisches Schlagwerk für eine zumindest teilweise schlagende Handwerkzeugmaschine (1) mit einem topfförmigen Flugkolben (2), in dessen Topfraum (4) radial innen ein Döpper (3) innerhalb einer axialen Eindringlänge (L) beweglich eindringt, dadurch gekennzeichnet, dass der Döpper (3) mit dem topfförmigen Flugkolben (2) einen dämpfenden Radialspalt (X) zu dem im wesentlichen gasdicht geschlossenen Topfraum (4) ausbildet, welcher den durch den Flugkolben (2) axial angetriebenen Döpper (3) innerhalb der Eindringlänge (L) zur Bewegungsumkehr zwingt.
- Pneumatisches Schlagwerk nach Anspruch 1, dadurch gekennzeichnet, dass die vom radialen Radialspalt (X) zwischen dem Döpper (3) und dem Flugkolben (2) gebildete Spaltfläche 3% bis 6% des durch den Döpper (3) innerhalb des Flugkolbens (2) gebildeten Döpperquerschnitts beträgt.
- Pneumatisches Schlagwerk nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Dicke des radialen Radialspalts (X) zwischen 0,1mm bis 0,17mm ist.
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 true EP1340596A1 (de) | 2003-09-03 |
EP1340596B1 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 (de) |
EP (1) | EP1340596B1 (de) |
JP (1) | JP4340081B2 (de) |
CN (1) | CN1442276A (de) |
DE (2) | DE10209293A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008074549A1 (de) * | 2006-12-20 | 2008-06-26 | Robert Bosch Gmbh | Schlagwerk für eine handwerkzeugmaschine |
WO2013004459A1 (de) * | 2011-07-05 | 2013-01-10 | Robert Bosch Gmbh | Schlagwerkvorrichtung |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005030340B3 (de) * | 2005-06-29 | 2007-01-04 | Wacker Construction Equipment Ag | Schlagwerk mit elektrodynamischem Linearantrieb |
US7726413B2 (en) | 2006-07-01 | 2010-06-01 | Black & Decker Inc. | Tool holder for a powered hammer |
EP1872910B1 (de) | 2006-07-01 | 2012-11-21 | Black & Decker, Inc. | Verfahren zum Bemessen die Abnutzung eines nasenartigen Teils eines Döppers in einem Bohrhammer |
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 |
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 |
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 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB173093A (en) * | 1920-10-07 | 1921-12-29 | Chicago Pneumatic Tool Co | Improvements in power hammers |
DE2702128A1 (de) * | 1977-01-20 | 1978-07-27 | Metabowerke Kg | Motorisch angetriebener hammer, bei dem in einem zylinder ein kolben verschiebbar gefuehrt ist |
DE2929191A1 (de) * | 1979-07-19 | 1981-01-29 | Metabowerke Kg | Elektropneumatischer hammer |
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 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
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 |
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 US US10/376,007 patent/US20030221847A1/en not_active Abandoned
- 2003-02-27 CN CN03106726.3A patent/CN1442276A/zh active Pending
- 2003-02-28 JP JP2003052660A patent/JP4340081B2/ja not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB173093A (en) * | 1920-10-07 | 1921-12-29 | Chicago Pneumatic Tool Co | Improvements in power hammers |
DE2702128A1 (de) * | 1977-01-20 | 1978-07-27 | Metabowerke Kg | Motorisch angetriebener hammer, bei dem in einem zylinder ein kolben verschiebbar gefuehrt ist |
DE2929191A1 (de) * | 1979-07-19 | 1981-01-29 | Metabowerke Kg | Elektropneumatischer hammer |
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 |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 04 30 April 1996 (1996-04-30) * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008074549A1 (de) * | 2006-12-20 | 2008-06-26 | Robert Bosch Gmbh | Schlagwerk für eine handwerkzeugmaschine |
US8011443B2 (en) | 2006-12-20 | 2011-09-06 | Robert Bosch Gmbh | Striking mechanism for a handheld power tool |
WO2013004459A1 (de) * | 2011-07-05 | 2013-01-10 | Robert Bosch Gmbh | Schlagwerkvorrichtung |
US20140144658A1 (en) * | 2011-07-05 | 2014-05-29 | Robert Bosch Gmbh | Percussion mechanism apparatus |
Also Published As
Publication number | Publication date |
---|---|
JP2003266332A (ja) | 2003-09-24 |
US20030221847A1 (en) | 2003-12-04 |
DE50312392D1 (de) | 2010-03-25 |
CN1442276A (zh) | 2003-09-17 |
JP4340081B2 (ja) | 2009-10-07 |
EP1340596B1 (de) | 2010-02-03 |
DE10209293A1 (de) | 2003-09-18 |
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