EP1915238A1 - Elektrowerkzeugmaschine sowie überlastschutzvorrichtung - Google Patents
Elektrowerkzeugmaschine sowie überlastschutzvorrichtungInfo
- Publication number
- EP1915238A1 EP1915238A1 EP06777553A EP06777553A EP1915238A1 EP 1915238 A1 EP1915238 A1 EP 1915238A1 EP 06777553 A EP06777553 A EP 06777553A EP 06777553 A EP06777553 A EP 06777553A EP 1915238 A1 EP1915238 A1 EP 1915238A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gear
- overload protection
- power
- power tool
- gears
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
Definitions
- the invention is based on a power tool and an overload protection device according to the preambles of the independent claims.
- Electric machine tools are usually equipped with a built-in electronics protection mechanism according to the prior art. As soon as a certain power level is exceeded when working with the power tool, the machine is automatically switched off via its overload function ("torque function"), which is a pre-selection of a desired torque by means of electronic elements.
- torque function a pre-selection of a desired torque by means of electronic elements.
- torque limiting provides immediate, almost reverse turn-off of the device, which is generally active in some power tools, but has the disadvantage that maximum power is not available on such power tools because it automatically shuts off before reaching maximum power.
- the overload protection function can be manually switched on and off, for example via a switch or via a setting wheel, this function being active in all gears, but this has the disadvantage that when operating in second gear (and active overload protection function), the operator can overheat the engine without first switching to first gear (in which overheating may not occur).
- the speed reduction is carried out by the electronics, which reduces the speed automatically with increased torque in Maxi times load operation. Since it does not shut off automatically, the customer is not forced to switch to first gear.
- a power tool according to the invention with a multi-speed gearshift for setting demand-dependent power levels of a drive overload protection function with the gears is coupled, at least one gear is provided, in which the overload protection function is forcibly deactivated.
- An overload protection device according to the invention provides at least one gear with a forcibly deactivated shutdown in case of overload.
- the operator may conveniently choose which power to use for which operation.
- a gear shift lever preferably a rotary switch is provided, the operator can select as usual, for example, a first gear with a higher gear ratio when the power tool is likely to be heavily stressed, for example, due to high contact pressures and torques. At less heavy load he can choose a second gear with a lower gear ratio.
- the electronics are switched so that the power tool automatically shuts off at a certain power to avoid damage, in particular of the electric motor and the transmission. If an even greater power is required, a third stage can be set. In this position, according to the invention, the first gear with the lowest power level is mechanically preset, the overload protection function being switched off via the electronics.
- a maximum possible power of the power tool can thus be called up. With this coupling can be prevented that the operator can work in second gear and the engine heats up too quickly.
- the single figure shows a detailed view of an embodiment of a power tool 11 according to the invention, in which a rotary switch 10 is shown.
- the rotary switch 10 is a multiple gears 1, 2 comprehensive gear for adjusting demand-adjustable power levels of a drive adjustable.
- the rotary switch 10 can be as usual a mechanical gear shift, with the gear 1 and the gear 2 can be selected between a higher and a lower translation.
- the electronics in the gears 1 and 2 is connected so that the power tool 11 automatically shuts off at a certain power.
- the overload protection function is thus active in gears 1 and 2.
- a gear 3 is adjustable by means of the rotary switch 10, wherein the gear 1 with the lowest power level is mechanically preset, but the overload protection function is forcibly deactivated.
- the overload protection function is forcibly deactivated.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
- Structure Of Transmissions (AREA)
- Percussive Tools And Related Accessories (AREA)
- Auxiliary Devices For Machine Tools (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005037254A DE102005037254A1 (de) | 2005-08-08 | 2005-08-08 | Elektrowerkzeugmaschine sowie Überlastschutzvorrichtung |
PCT/EP2006/063799 WO2007017315A1 (de) | 2005-08-08 | 2006-07-03 | Elektrowerkzeugmaschine sowie überlastschutzvorrichtung |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1915238A1 true EP1915238A1 (de) | 2008-04-30 |
Family
ID=36968592
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06777553A Withdrawn EP1915238A1 (de) | 2005-08-08 | 2006-07-03 | Elektrowerkzeugmaschine sowie überlastschutzvorrichtung |
Country Status (6)
Country | Link |
---|---|
US (1) | US7730964B2 (zh) |
EP (1) | EP1915238A1 (zh) |
JP (1) | JP2009504419A (zh) |
CN (1) | CN101242935B (zh) |
DE (1) | DE102005037254A1 (zh) |
WO (1) | WO2007017315A1 (zh) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2427006A (en) | 2005-06-10 | 2006-12-13 | Black & Decker Inc | Overload clutch with two predetermined torque levels |
DE102011004126A1 (de) * | 2011-02-15 | 2012-08-16 | Robert Bosch Gmbh | Handwerkzeugmaschine mit einem Untersetzungsgetriebe |
US9908182B2 (en) | 2012-01-30 | 2018-03-06 | Black & Decker Inc. | Remote programming of a power tool |
US9193055B2 (en) | 2012-04-13 | 2015-11-24 | Black & Decker Inc. | Electronic clutch for power tool |
US8919456B2 (en) | 2012-06-08 | 2014-12-30 | Black & Decker Inc. | Fastener setting algorithm for drill driver |
DE102014219392A1 (de) * | 2014-09-25 | 2016-03-31 | Robert Bosch Gmbh | Sensorvorrichtung, insbesondere Handwerkzeugmaschinensensorvorrichtung |
CN108370152B (zh) | 2015-12-14 | 2020-03-06 | 米沃奇电动工具公司 | 电动工具中的过载检测 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4317176A (en) * | 1980-03-24 | 1982-02-23 | Black & Decker Inc. | Microcomputer controlled power tool |
DE3832202C1 (en) * | 1988-09-22 | 1990-03-22 | Robert Bosch Gmbh, 7000 Stuttgart, De | Hand-held machine tool |
JPH0460681A (ja) * | 1990-06-29 | 1992-02-26 | Katsuragawa Electric Co Ltd | 感光体の表面電位安定化方法 |
US5573074A (en) * | 1995-02-13 | 1996-11-12 | Gpx Corp. | Gear shifting power tool |
DE19629623A1 (de) * | 1996-07-23 | 1998-01-29 | Bosch Gmbh Robert | Werkzeugmaschine |
DE19646382A1 (de) * | 1996-11-11 | 1998-05-14 | Hilti Ag | Handgerät |
JPH11123670A (ja) * | 1997-10-22 | 1999-05-11 | Makita Corp | 電動工具の変速装置 |
US7404450B2 (en) * | 2000-01-27 | 2008-07-29 | S.P. Air Kabusiki Kaisha | Pneumatic rotary tool |
AUPQ618800A0 (en) | 2000-03-10 | 2000-04-06 | Bayly Design Associates Pty Ltd | Power tool |
DE10219755A1 (de) | 2002-05-02 | 2003-11-13 | Hilti Ag | Überlastschutz für eine drehende Werkzeugmaschine |
JP4228586B2 (ja) | 2002-05-21 | 2009-02-25 | 富士電機デバイステクノロジー株式会社 | 半導体装置 |
EP2390062B1 (en) | 2002-09-13 | 2017-03-08 | Black & Decker Inc. | Rotary Tool |
DE10309012B3 (de) * | 2003-03-01 | 2004-08-12 | Hilti Ag | Steuerverfahren einer axial schlagenden und drehenden Elektrohandwerkzeugmaschine |
JP2004297957A (ja) * | 2003-03-27 | 2004-10-21 | Hitachi Koki Co Ltd | 変速付電動工具の過負荷保護回路 |
US6796921B1 (en) * | 2003-05-30 | 2004-09-28 | One World Technologies Limited | Three speed rotary power tool |
DE202004004749U1 (de) * | 2004-03-26 | 2005-09-01 | Steiner, Andreas | Bearbeitungsgerät |
-
2005
- 2005-08-08 DE DE102005037254A patent/DE102005037254A1/de not_active Withdrawn
-
2006
- 2006-07-03 WO PCT/EP2006/063799 patent/WO2007017315A1/de active Application Filing
- 2006-07-03 CN CN2006800293345A patent/CN101242935B/zh not_active Expired - Fee Related
- 2006-07-03 JP JP2008525505A patent/JP2009504419A/ja active Pending
- 2006-07-03 US US11/915,230 patent/US7730964B2/en not_active Expired - Fee Related
- 2006-07-03 EP EP06777553A patent/EP1915238A1/de not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO2007017315A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102005037254A1 (de) | 2007-02-15 |
JP2009504419A (ja) | 2009-02-05 |
CN101242935A (zh) | 2008-08-13 |
CN101242935B (zh) | 2012-10-10 |
US7730964B2 (en) | 2010-06-08 |
US20080185984A1 (en) | 2008-08-07 |
WO2007017315A1 (de) | 2007-02-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20080310 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE ES GB |
|
17Q | First examination report despatched |
Effective date: 20080723 |
|
DAX | Request for extension of the european patent (deleted) | ||
RBV | Designated contracting states (corrected) |
Designated state(s): DE ES GB |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20130305 |