WO2008015050A2 - Elektrowerkzeugmaschine - Google Patents
Elektrowerkzeugmaschine Download PDFInfo
- Publication number
- WO2008015050A2 WO2008015050A2 PCT/EP2007/055802 EP2007055802W WO2008015050A2 WO 2008015050 A2 WO2008015050 A2 WO 2008015050A2 EP 2007055802 W EP2007055802 W EP 2007055802W WO 2008015050 A2 WO2008015050 A2 WO 2008015050A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- unit
- piston
- drive
- piston unit
- tool according
- Prior art date
Links
Classifications
-
- 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
- B25D11/06—Means for driving the impulse member
- B25D11/12—Means for driving the impulse member comprising a crank mechanism
- B25D11/125—Means for driving the impulse member comprising a crank mechanism with a fluid cushion between the crank drive and the striking body
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2211/00—Details of portable percussive tools with electromotor or other motor drive
- B25D2211/003—Crossed drill and motor spindles
-
- 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
- B25D2250/245—Spatial arrangement of components of the tool relative to each other
Definitions
- the invention relates to a power tool according to the preamble of claim 1.
- Known power tool machines with eccentric drive in particular electric hammers, have a drive unit and a gear unit, wherein a transmitted from the drive unit via a drive shaft to a crankshaft rotational movement in linear movements of a drive element, such as a connecting rod, is implemented.
- a drive element such as a connecting rod
- As Schlagtechnik in such electric hammers for example, connected to an eccentric reciprocating pot piston is used, which is acted upon by the connecting rod with force.
- a drive element and a piston unit are arranged axially parallel, wherein the drive element axially overlaps at least partially with a longitudinal extension of the piston unit, and wherein the drive unit is arranged approximately centrally in an axial extension of the piston unit and its longitudinal axis is arranged transversely to the piston longitudinal axis.
- the drive element is arranged offset laterally relative to the piston unit, wherein a drive path is advantageously shortened by the axial overlap.
- the length of the drive element is taken out of the determining Trekette for the length of the device. The length of the device is conveniently shortened significantly. This leads to a favorable compact and ergonomic design of the device. Further advantages are an ideal weight distribution and better handling of the device.
- a power transmission starts at the side of the piston unit.
- the piston unit is acted upon with unchanged effect via the drive element with force.
- the piston unit may preferably be designed as a pot piston. It is also an embodiment conceivable as a cylindrical piston.
- the drive unit follows the piston unit axially and is arranged "in line" (or in-line) behind the piston unit in an axial extension, whereby the drive unit can be arranged approximately in the middle of the axial extension of the piston unit
- the drive unit comprises copper windings and an iron core
- the copper windings and / or the iron core of the drive unit may at least partly overlap with the piston unit in an axial extension Design of the device, because in this arrangement, only the width of the drive unit is included in the overall length of the device, and not the entire length of the drive unit.
- the drive element may comprise at least one connecting rod and a pivot, wherein the connecting rod is driven by an eccentric.
- a rotational movement transmitted by a drive via a crankshaft can be converted into linear movements of the connecting rod.
- the eccentric and the crankshaft can be coupled, for example by a toothing in the form of a gear coupling.
- the connecting rod can in turn move a drive rod, which is axially guided and drives the piston unit.
- the drive element may comprise a link, wherein conveniently the link is arranged laterally on the circumference of the piston unit.
- the scenery is cast on the conveniently made of cast steel piston unit.
- an eccentric pin is guided in the gate, whereby the piston unit is moved.
- FIG. 1 is a sectional view of a preferred embodiment of a power tool with a single-stage gear and an eccentric drive with connecting rod.
- Fig. 2 shows a preferred variant in a sectional view with a two-stage gear and a link
- FIG. 3 shows a sectional view of a further variant in which a piston unit is driven directly via a connecting rod
- Fig. 4 is a sectional view of another variant, in which the piston unit is formed as a cylindrical piston.
- FIG. 1 shows schematically a preferred embodiment of a power tool with a drive unit 10 and a single-stage gear unit 11, wherein the gear unit 11 comprises a drive element 12 for acting on a piston unit 13 with force.
- the drive element 12 and the piston unit 13 are arranged axially parallel, wherein the drive element 12 axially overlaps at least partially with a longitudinal extent of the piston unit 13.
- the drive unit 10 is arranged approximately centrally in an axial extension of the piston unit 13, wherein a longitudinal axis 14 of the drive unit 10 is arranged transversely to the piston longitudinal axis 15.
- the designed as an electric motor drive unit 10 generates a rotational movement, which is transmitted via a drive shaft 21 to a crankshaft 23 of an eccentric 18th
- the eccentric 18 and the Drive shaft 21 are coupled together by a toothing in the form of a gear coupling, not shown. In the usual way, it can be fixed on the shaft of the drive shaft 21 torque-proof a not shown pinion, which is in meshing engagement with a ring gear, not shown, of a ring gear.
- the eccentric 18 is in a known manner, the rotational movement of the drive unit 10 in linear movements of the drive member 12 to.
- the drive element 12 includes in Fig. 1, a connecting rod 16, wherein a force transmission of the eccentric 18 takes place on the connecting rod 16 via an eccentric pin 22.
- the eccentric pin 22 is encompassed by a connecting rod eye, not shown, of the connecting rod 16.
- the linear lifting movement of the connecting rod 16 is transmitted via a pivot pin 17 to a drive rod 19.
- the drive rod 19 is arranged parallel to the connecting rod 16 and is guided axially.
- About the drive rod 19 is the as
- Piston piston formed piston unit 13 driven. About a trained on the circumference of the piston unit 13 power transmission element 24, the piston unit 13 is acted upon with force.
- the drive unit 10 is arranged axially behind the piston unit 13, wherein its axis of rotation is arranged perpendicular to the piston longitudinal axis 15.
- FIGS. 2, 3 and 4 respectively alternative embodiments of a power tool according to the invention are shown.
- the operation of the drive essentially corresponds to the description of FIG. 1, to which reference is made in each case to the avoidance of repetitions.
- the representation in FIG. 2 comprises, in addition to a drive unit 10, a two-stage gear unit 11.
- the drive element 12 comprises a link 20, which is arranged laterally on the circumference of the piston unit 13, in particular is cast onto the piston unit 13 , A Motion implementation in the gate 20 via the eccentric pin 22, which runs in the slot 20 of the piston unit 13, whereby the piston unit 13 is driven.
- Piston unit 13 is driven directly by a connecting rod 16, wherein the drive rod is omitted.
- Fig. 4 corresponds substantially to the representation in Fig. 1.
- the piston unit 13 comprises a cylindrical piston.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
- Percussive Tools And Related Accessories (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/376,001 US8028761B2 (en) | 2006-08-02 | 2007-06-13 | Electric power tool |
EP07765386A EP2086725A2 (de) | 2006-08-02 | 2007-06-13 | Elektrowerkzeugmaschine |
CN2007800288248A CN101578161B (zh) | 2006-08-02 | 2007-06-13 | 电动工具机 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006035975A DE102006035975A1 (de) | 2006-08-02 | 2006-08-02 | Elektrowerkzeugmaschine |
DE102006035975.5 | 2006-08-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2008015050A2 true WO2008015050A2 (de) | 2008-02-07 |
WO2008015050A3 WO2008015050A3 (de) | 2009-06-04 |
Family
ID=38884836
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2007/055802 WO2008015050A2 (de) | 2006-08-02 | 2007-06-13 | Elektrowerkzeugmaschine |
Country Status (6)
Country | Link |
---|---|
US (1) | US8028761B2 (de) |
EP (1) | EP2086725A2 (de) |
CN (1) | CN101578161B (de) |
DE (1) | DE102006035975A1 (de) |
RU (1) | RU2447986C2 (de) |
WO (1) | WO2008015050A2 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102371573A (zh) * | 2010-08-10 | 2012-03-14 | 南京德朔实业有限公司 | 电动工具 |
CN102357820B (zh) * | 2011-10-18 | 2014-01-15 | 重庆红旗缸盖制造有限公司 | 汽缸体端面铣用夹具 |
US20140264993A1 (en) * | 2013-03-14 | 2014-09-18 | University Of Washington Through Its Center For Commercialization | Methods for blow molding solid-state cellular thermoplastic articles |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE340541C (de) * | 1919-08-10 | 1921-09-14 | Emil Hahn | Schlagwerkzeug mit Kurbelantrieb |
US3463246A (en) * | 1966-12-28 | 1969-08-26 | Metabowerke Kg | Rotary percussive power tool with changeable drive |
GB1206853A (en) * | 1967-01-13 | 1970-09-30 | Bosch Gmbh Robert | Improvements in or relating to motor driven hammers |
US4113035A (en) * | 1977-04-21 | 1978-09-12 | Licentia Patent-Verwaltungs-G.M.B.H. | Hammer drill with drive and percussion elements accommodated in a cylinder |
DE3314414A1 (de) * | 1983-04-21 | 1984-10-25 | Robert Bosch Gmbh, 7000 Stuttgart | Bohrhammer |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1139139A (en) * | 1912-10-02 | 1915-05-11 | William L Smith | Rock-drill. |
US1921628A (en) * | 1932-06-06 | 1933-08-08 | Ralph H Maxwell | Portable electric hammer |
SU97938A1 (ru) * | 1953-03-23 | 1953-11-30 | П.М. Алабужев | Электрический бурильный молоток |
GB1049938A (en) * | 1963-03-15 | 1966-11-30 | Wacker Hermann | Improvements in motor-driven percussive tools |
DE2516406C3 (de) * | 1975-04-15 | 1981-11-19 | Robert Bosch Gmbh, 7000 Stuttgart | Bohrhammer |
SU768957A1 (ru) * | 1978-11-28 | 1980-10-07 | Институт Автоматики Ан Киргизской Сср | Ударный механизм |
DE10259566A1 (de) * | 2002-12-19 | 2004-07-01 | Hilti Ag | Schlagende Elektrohandwerkzeugmaschine |
-
2006
- 2006-08-02 DE DE102006035975A patent/DE102006035975A1/de not_active Withdrawn
-
2007
- 2007-06-13 WO PCT/EP2007/055802 patent/WO2008015050A2/de active Application Filing
- 2007-06-13 EP EP07765386A patent/EP2086725A2/de not_active Withdrawn
- 2007-06-13 CN CN2007800288248A patent/CN101578161B/zh not_active Expired - Fee Related
- 2007-06-13 RU RU2009106956/02A patent/RU2447986C2/ru not_active IP Right Cessation
- 2007-06-13 US US12/376,001 patent/US8028761B2/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE340541C (de) * | 1919-08-10 | 1921-09-14 | Emil Hahn | Schlagwerkzeug mit Kurbelantrieb |
US3463246A (en) * | 1966-12-28 | 1969-08-26 | Metabowerke Kg | Rotary percussive power tool with changeable drive |
GB1206853A (en) * | 1967-01-13 | 1970-09-30 | Bosch Gmbh Robert | Improvements in or relating to motor driven hammers |
US4113035A (en) * | 1977-04-21 | 1978-09-12 | Licentia Patent-Verwaltungs-G.M.B.H. | Hammer drill with drive and percussion elements accommodated in a cylinder |
DE3314414A1 (de) * | 1983-04-21 | 1984-10-25 | Robert Bosch Gmbh, 7000 Stuttgart | Bohrhammer |
Also Published As
Publication number | Publication date |
---|---|
US8028761B2 (en) | 2011-10-04 |
WO2008015050A3 (de) | 2009-06-04 |
DE102006035975A1 (de) | 2008-02-07 |
EP2086725A2 (de) | 2009-08-12 |
CN101578161A (zh) | 2009-11-11 |
RU2009106956A (ru) | 2010-09-10 |
RU2447986C2 (ru) | 2012-04-20 |
CN101578161B (zh) | 2012-07-18 |
US20090314506A1 (en) | 2009-12-24 |
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