EP1539435A1 - Handwerkzeugmaschine, insbesondere winkelschleifmaschine - Google Patents
Handwerkzeugmaschine, insbesondere winkelschleifmaschineInfo
- Publication number
- EP1539435A1 EP1539435A1 EP03737931A EP03737931A EP1539435A1 EP 1539435 A1 EP1539435 A1 EP 1539435A1 EP 03737931 A EP03737931 A EP 03737931A EP 03737931 A EP03737931 A EP 03737931A EP 1539435 A1 EP1539435 A1 EP 1539435A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- transmission
- hand tool
- tool according
- motor
- housing
- 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
- 230000005540 biological transmission Effects 0.000 claims description 34
- 230000008878 coupling Effects 0.000 claims description 13
- 238000010168 coupling process Methods 0.000 claims description 13
- 238000005859 coupling reaction Methods 0.000 claims description 13
- 238000013016 damping Methods 0.000 claims description 6
- 230000035939 shock Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000001066 destructive effect Effects 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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
- B25F5/02—Construction of casings, bodies or handles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
- B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
Definitions
- Hand tool in particular angle grinder
- Angle grinders in particular one-hand angle grinders, usually have an electric motor, consisting of a pole piece and armature, and an angular gear, consisting of a pinion, ring gear and work spindle.
- the armature shaft is mounted in the motor housing, the pole piece is usually pressed into it.
- the brush holders are usually also fixed in the motor housing. The motor cannot be operated outside the motor housing, since this has the function of positioning the components relative to one another.
- the pinion sits directly on the motor's armature shaft. Therefore, the gearbox cannot be operated without the armature shaft, since it acts as a gearbox input shaft.
- the angular transmission of an electrically operated angle grinder has the tasks of redirecting the flow of force by 90 ° and reducing the speed of the usually fast-running electric motor to the lower working speed.
- the drive pinion is usually attached directly to the armature shaft of the electric motor and drives the output spindle via a ring gear.
- the spindle is mounted in two bearings on both sides of the ring gear in the gearbox.
- the bearings of the motor shaft are usually located in the gearbox and in the motor housing.
- the fixed bearing of the motor shaft is usually arranged between the pinion and fan on the armature shaft, the floating bearing is located on the collector-side shaft end. This results in an arrangement with a "flying" pinion.
- Power tools usually have an electric motor, consisting of a pole piece and armature, the armature shaft being mounted in the motor housing and the pole piece usually being pressed into it.
- the brush holders are usually also fixed in the motor housing.
- the motor mounting accommodating a completely mounted electric motor, in particular an encapsulated DC motor, in a shell housing.
- the admission me should position the motor in the housing, compensate for position errors and absorb and dampen shocks.
- a fully mounted motor (“can motor”) is to be used in an angle grinder
- a modular design with a motor and a gearbox as independently functioning modules is advantageously selected.
- These modules should be connected to one another by means of a coupling which is as inexpensive as possible.
- This coupling should also in particular To compensate for an axial offset and an angular error between the armature shaft and the transmission input shaft within certain limits
- the clutch described in the invention fulfills these tasks.
- a modular structure of power tools simplifies the assembly of the device and increases the ease of servicing, since individual components can be replaced quickly and easily.
- a transmission according to the invention represents an independent, fully functional assembly which can be easily combined with other assemblies (e.g. motor).
- the mounting of the pinion shaft with bearing points on both sides of the drive pinion, especially in the gear housing, enables a better absorption of the gear forces than the usual solutions with "flying" pinion.
- the type of assembly presented makes it possible to assemble a preassembled subassembly comprising a pinion shaft, pinion, ball bearing and pressed-on fan and at the same time to secure it axially.
- the proposed solution offers the advantage that the rubber rings provided in the bearing points can dampen shocks and vibrations due to their resilient and damping properties and thus have a favorable influence on the service life and operating properties of the device.
- the rubber rings make it possible to compensate for axis errors, ie the rubber rings represent a damping unit and also a compensating coupling.
- the proposed solution can be used particularly advantageously in a modular construction of the power tool.
- the solution is conceivable in the case of various motors which appear suitable to the person skilled in the art, it is particularly advantageous in the case of motors operated with rechargeable batteries. Further advantages of the invention over the known with regard to the connection between the engine and the transmission:
- a modular structure of power tools simplifies the assembly of the device and increases the ease of servicing, since individual components can be replaced quickly and easily.
- 1 shows the transmission housing 10, the air guide disk 20 and a subassembly 30, consisting of pinion shaft 31, pinion 32, ball bearing 33 and fan 34.
- the subassembly 30 is preassembled by first pushing the ball bearing 33 onto the pinion shaft 31 and then pressing the pinion 32 on. On the opposite shaft end, the fan 34 is pressed, which has an internal toothing 35 which takes over the coupling function.
- the pinion 32 For the later assembly of the assembly 30 in the gear housing 10, it is necessary for the pinion 32 to have a diameter that is several millimeters smaller than the ball bearing 33.
- a bearing bush or a needle bearing (not shown in the figure) is first pressed into the gear housing 10. This Bearing bush or this needle bearing forms the floating bearing for the pinion shaft 31. An O-ring for sealing the ball bearing 33 is then inserted into the groove 12 in the bearing seat 11.
- the air baffle 20 fulfills a double function: First, the laterally projecting surfaces 21, 22 cover cavities in the gear housing and direct the cooling air from the engine to the air outlet openings in the gear housing. Secondly, the air guide disk 20 takes over the axial securing of the ball bearing 33 in its bearing seat 11 in the transmission housing. For assembly, the air baffle 20 is pressed into the gear housing, FIG. 2. Four tabs 23 on the air baffle 20 engage behind corresponding hooks 13 on the gear housing 10. The air baffle is thus clipped in.
- Corresponding bevels 14, 24 on the gear housing 10 and on the tabs 23 of the air baffle 20 ensure that the air baffle 20 is pressed backwards (in direction A) until the tabs 23 abut the corresponding surfaces of the hooks 13. The axial play required for clipping is thus eliminated by the elastic tensioning of the air guide disk 20.
- the axial gear forces that occur during operation act in the direction A on the snap hooks 25.
- the snap hooks 25 are designed such that they have a slight radial adjustment inwards in the relaxed state (i.e. after the module 30 has been inserted). Therefore, a retraction of the snap hooks 25 radially outwards due to an axial force in direction A is excluded. Because of their geometry, the snap hooks 25 have a tendency to avoid a force radially inward from direction A.
- stop cams 26 are arranged at the ends of the snap hooks 25, which engage around the outer ring of the ball bearing 33 in the assembled state, cf. Fig. 5.
- the 1A shows an exemplary embodiment of the motor housing (2A) of a power tool as a shell housing.
- the motor (1A) is completely stored as a unit (encapsulated motor) and also functions outside the motor housing (2A).
- the motor (1A) has cylindrical receiving domes at its front and rear ends. Before inserting the motor (1A) into the housing shells, suitable rubber O-rings (3A) are pushed over these mounting domes.
- the rubber rings are clamped in and enable effective damping of vibrations and shocks as well as compensation of tolerances.
- the motor (1B) is completely stored as a unit (“can motor”) and can also be used outside the motor housing (3B).
- the gearbox has an input shaft (4B) and an output shaft (5B), each of which is mounted in the gearbox housing (6B).
- the gearbox can therefore be operated independently of the engine (1B).
- This clutch could e.g. B. be designed as a safety clutch that interrupts the drive train when, for example, the output shaft (work spindle) is suddenly blocked. This clutch will not be described in more detail here. Description of the Figures IC to 3C:
- Fig. IC shows the modular structure of a power tool using the example of an angle grinder.
- the motor (IC) and the bevel gear (3C) function independently as separate assemblies.
- the coupling consists of the toothed sleeve (2C), which is connected to the armature shaft of the motor (IC) in a non-positive and / or positive manner, and the internal toothing (5C) integrated in the fan (4C).
- the fan (4C) is in turn connected to the transmission input shaft in a force-locking and / or positive manner.
- the internal toothing (5C) and the toothed sleeve (2C) are dimensioned in such a way that there is a defined radial clearance between the two, which makes it possible to compensate for an axial offset between the armature shaft and the transmission input shaft.
- the toothed sleeve (2C) is also crowned to compensate for an angular misalignment between the two shafts.
- the transmission input shaft (6C) has a hexagon (7C) and a cylindrical part (9C) with a recess (8C) on its fan-side end.
- 3C shows the fan (4C), which has a corresponding hexagon socket (IOC) on the gearbox side and a cylindrical joining surface (11C). Inside the joint surface (11C) there is a ring (12C) with a slightly smaller inner diameter than that of the cylindrical joint surface (11C) and protrudes beyond it in the radial direction.
- the fan (4C) is received in its internal toothing (5C) and pressed over the cylindrical part (9C) of the gear shaft.
- the inner ring (12C) sits in the corresponding recess (8C) in the gear shaft and thus serves to axially secure the fan (4C) on the shaft.
- the internal hexagon (IOC) of the fan (4C) engages over the hexagon (7C) on the shaft. The torque transmission from the fan (4C) to the transmission input shaft is thus both non-positive and positive.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10242738 | 2002-09-13 | ||
| DE10242738A DE10242738A1 (de) | 2002-09-13 | 2002-09-13 | Handwekzeugmaschine, insbesondere Winkelschleifmaschine |
| PCT/DE2003/001887 WO2004026535A1 (de) | 2002-09-13 | 2003-06-06 | Handwerkzeugmaschine, insbesondere winkelschleifmaschine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1539435A1 true EP1539435A1 (de) | 2005-06-15 |
| EP1539435B1 EP1539435B1 (de) | 2010-09-08 |
Family
ID=32009829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03737931A Expired - Lifetime EP1539435B1 (de) | 2002-09-13 | 2003-06-06 | Handwerkzeugmaschine, insbesondere winkelschleifmaschine |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US8096857B2 (de) |
| EP (1) | EP1539435B1 (de) |
| JP (1) | JP2005537947A (de) |
| CN (1) | CN100358678C (de) |
| DE (2) | DE10242738A1 (de) |
| WO (1) | WO2004026535A1 (de) |
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004055268A1 (de) * | 2004-11-17 | 2006-05-18 | Robert Bosch Gmbh | Handwerkzeugmaschine |
| DE102005061870A1 (de) * | 2005-12-23 | 2007-07-05 | Robert Bosch Gmbh | Handwerkzeugmaschine |
| DE102007057453A1 (de) * | 2007-11-29 | 2009-06-04 | Robert Bosch Gmbh | Handwerkzeugmaschine |
| DE102008000728A1 (de) * | 2008-03-18 | 2009-09-24 | Robert Bosch Gmbh | Handwerkzeugmaschine, insbesondere handgeführte Schleifmaschine |
| DE102008001268A1 (de) * | 2008-04-18 | 2009-10-22 | Robert Bosch Gmbh | Steckeranordnung in einer Werkzeugmaschine, insbesondere in einer Handwerkzeugmaschine |
| US8508084B2 (en) * | 2008-06-26 | 2013-08-13 | Techtronic Power Tools Technology Limited | Power tool including hybrid electric motor design |
| DE102009026519A1 (de) * | 2009-05-27 | 2010-12-02 | Robert Bosch Gmbh | Werkzeugmaschine, insbesondere Handwerkzeugmaschine |
| DE102011007433A1 (de) * | 2010-04-20 | 2011-12-08 | Robert Bosch Gmbh | Handwerkzeugmaschinenvorrichtung |
| EP2580850B1 (de) * | 2010-06-14 | 2021-11-10 | Black & Decker, Inc. | Steuereinheit für einen bürstenlosen motor in einem stromwerkzeug |
| DE102010033978A1 (de) * | 2010-08-11 | 2012-02-16 | Andreas Stihl Ag & Co. Kg | Handgeführtes Arbeitsgerät |
| DE102010043182A1 (de) * | 2010-10-29 | 2012-05-03 | Robert Bosch Gmbh | Tragbare Werkzeugmaschine |
| DE102012201583A1 (de) * | 2012-02-03 | 2013-08-08 | Robert Bosch Gmbh | Handwerkzeugmaschinenvorrichtung |
| DE102012104538A1 (de) * | 2012-05-25 | 2013-11-28 | Gustav Klauke Gmbh | Werkzeug |
| JP6127840B2 (ja) * | 2013-09-02 | 2017-05-17 | 日立工機株式会社 | 電動工具 |
| CN104920087B (zh) * | 2014-03-17 | 2017-10-10 | 天佑电器(苏州)有限公司 | 一种延伸杆和具有该延伸杆的动力工具 |
| US9475172B2 (en) | 2014-07-15 | 2016-10-25 | Milwaukee Electric Tool Corporation | Adjustable guard for power tool |
| DE102015111717A1 (de) | 2015-07-20 | 2017-01-26 | Metabowerke Gmbh | Luftleitscheibe |
| EP3514407B1 (de) | 2018-01-23 | 2026-04-15 | Milwaukee Electric Tool Corporation | Elektrowerkzeug |
| US11148273B2 (en) | 2018-03-30 | 2021-10-19 | Milwaukee Electric Tool Corporation | Rotary power tool including transmission housing bushing |
| DE102019207974A1 (de) * | 2019-05-29 | 2020-12-03 | Robert Bosch Gmbh | Handwerkzeugmaschine |
| CN115570179A (zh) * | 2021-07-06 | 2023-01-06 | 南京泉峰科技有限公司 | 电钻及电动工具 |
| EP4302926B1 (de) | 2022-06-16 | 2025-08-06 | Milwaukee Electric Tool Corporation | Kompaktes schlagwerkzeug |
| US12496682B2 (en) | 2022-08-15 | 2025-12-16 | Techtronic Cordless Gp | Die grinder with an offset gear transmission |
Family Cites Families (42)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1971790A (en) * | 1932-06-22 | 1934-08-28 | Arthur W Mall | Portable power tool |
| DE1103804B (de) * | 1957-11-06 | 1961-03-30 | Duss Maschf | Zweigang-Elektrohandschleifer |
| US4356669A (en) * | 1981-10-23 | 1982-11-02 | Nils Hoglund | Cam control grinding machine |
| US4736546A (en) * | 1983-07-01 | 1988-04-12 | Ugo John W | Tire uniformity grinder and method |
| US4672776A (en) * | 1983-10-11 | 1987-06-16 | Mccullough Timothy J | Circular blade sharpening device |
| JPS63140357A (ja) | 1986-12-02 | 1988-06-11 | Nec Corp | デイスク入出力制御方式 |
| DE3700968A1 (de) * | 1987-01-15 | 1988-08-04 | Bosch Gmbh Robert | Spanneinrichtung zum axialen festspannen eines werkzeuges, insbesondere einer scheibe |
| US4742257A (en) * | 1987-01-29 | 1988-05-03 | General Motors Corporation | Totally enclosed fan cooled induction motor with improved cooling |
| DE4004464A1 (de) * | 1989-07-15 | 1991-01-24 | Kress Elektrik Gmbh & Co | Elektrowerkzeug |
| ATE116490T1 (de) * | 1989-07-15 | 1995-01-15 | Kress Elektrik Gmbh & Co | Elektrowerkzeug. |
| DE4000861C3 (de) * | 1990-01-13 | 1999-04-08 | Atlas Copco Electric Tools | Handgeführte Schlagbohrmaschine mit Schwingungsdämpfung |
| SE465960B (sv) * | 1990-05-04 | 1991-11-25 | Atlas Copco Tools Ab | Vibrationsdaempad handhaallen rotationsslipmaskin |
| GB9123502D0 (en) * | 1991-11-06 | 1992-01-02 | Black & Decker Inc | Sanding apparatus |
| DE4223107A1 (de) * | 1992-07-14 | 1994-01-20 | Bosch Gmbh Robert | Flächenschleifmaschine |
| USRE38878E1 (en) * | 1992-09-24 | 2005-11-15 | Ebara Corporation | Polishing apparatus |
| DE4233948C2 (de) * | 1992-10-08 | 1999-01-21 | Alzmetall Werkzeugmasch | Antriebsanordnung einer Säulenbohrmaschine |
| JPH07224845A (ja) | 1994-02-08 | 1995-08-22 | Nippon Mektron Ltd | リュ−タ−用カップリング |
| US5580302A (en) * | 1994-02-28 | 1996-12-03 | Black & Decker Inc. | Random orbit sander having air directing baffle |
| CN1072996C (zh) * | 1994-05-03 | 2001-10-17 | 诺顿公司 | 角度打磨机用附件 |
| ES2194044T3 (es) * | 1994-07-26 | 2003-11-16 | Black & Decker Inc | Herramienta motorizada con sistema de impulsion modular y metodo de montaje del sistema de impulsion modular. |
| US5564969A (en) * | 1995-02-01 | 1996-10-15 | Cliffield Industries Ltd. | Hand-held polisher |
| SE510981C2 (sv) * | 1996-05-07 | 1999-07-19 | Atlas Copco Tools Ab | Portabel slipmaskin med utbytbar slitdel |
| JPH1029173A (ja) | 1996-07-10 | 1998-02-03 | Nippon Electric Ind Co Ltd | 直流モータ駆動電動工具の組立方法 |
| US5718621A (en) * | 1996-09-11 | 1998-02-17 | Turley; Edward Michael | Reversible angle grinder with top arbour lock |
| EP0829237A3 (de) | 1996-09-12 | 1998-08-12 | Ricana Ag | Gerät zum Trennen von Materialien mit einem Trennwerkzeug auf einer oszillierend bewegten Antriebsachse |
| US6120362A (en) * | 1997-06-09 | 2000-09-19 | Porter-Cable Corporation | Ergonomic grinder |
| GB2327054A (en) * | 1997-07-08 | 1999-01-13 | Black & Decker Inc | Shaft locking |
| JPH1175931A (ja) | 1997-09-03 | 1999-03-23 | Toyo Polymer Co | 片手で操作できる研磨機取扱い装置および該装置に用いる研磨機 |
| US6244943B1 (en) * | 1998-12-30 | 2001-06-12 | Guther Bohler Gmbh | Surface-processing apparatus |
| US6048260A (en) * | 1999-07-01 | 2000-04-11 | Roto-Zip Tool Corporation | Angle attachment for power tool |
| US6386961B1 (en) * | 1999-07-19 | 2002-05-14 | Thomas D. Cureton | Hand held grinder |
| DE19943629B4 (de) * | 1999-09-11 | 2015-04-09 | Andreas Stihl Ag & Co. | Handgeführtes Arbeitsgerät |
| SE0000761L (sv) * | 2000-03-08 | 2001-09-09 | Atlas Copco Tools Ab | Handhållet motordrivet verktyg med en vibrationsdämpande balanseringsanordning |
| IL138023A (en) * | 2000-08-23 | 2003-03-12 | Bronco Construction Equipment | Adapter for power tools |
| WO2002036983A1 (en) * | 2000-10-26 | 2002-05-10 | Piolax, Inc. | Rotary damper |
| US6734584B1 (en) * | 2001-06-11 | 2004-05-11 | Reliance Electric Technologies, Llc | Thermal barrier and cooling air deflector for totally enclosed motor |
| DE10248866B4 (de) * | 2002-10-18 | 2016-03-17 | Robert Bosch Gmbh | Handwerkzeugmaschine |
| DE10261572A1 (de) * | 2002-12-23 | 2004-07-01 | Robert Bosch Gmbh | Elektrohandwerkzeugmaschine |
| DE102004024287A1 (de) * | 2004-05-15 | 2005-12-01 | Robert Bosch Gmbh | Lagervorrichtung und Lüftungsvorrichtung |
| US7270641B2 (en) * | 2004-09-01 | 2007-09-18 | Appliance Development Corporation | Apparatus for abrading hair and exfoliating skin |
| US8172003B2 (en) * | 2004-10-15 | 2012-05-08 | Atlas Copco Electric Tools Gmbh | Overload protection device and machine tool having such overload protection device |
| CA2655134C (en) * | 2006-06-07 | 2017-07-04 | A.O. Smith Corporation | Totally enclosed fan cooled motor |
-
2002
- 2002-09-13 DE DE10242738A patent/DE10242738A1/de not_active Ceased
-
2003
- 2003-06-06 CN CNB038217228A patent/CN100358678C/zh not_active Expired - Fee Related
- 2003-06-06 JP JP2004536813A patent/JP2005537947A/ja active Pending
- 2003-06-06 EP EP03737931A patent/EP1539435B1/de not_active Expired - Lifetime
- 2003-06-06 WO PCT/DE2003/001887 patent/WO2004026535A1/de not_active Ceased
- 2003-06-06 US US10/512,715 patent/US8096857B2/en not_active Expired - Fee Related
- 2003-06-06 DE DE50313074T patent/DE50313074D1/de not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2004026535A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100358678C (zh) | 2008-01-02 |
| DE10242738A1 (de) | 2005-01-20 |
| WO2004026535A1 (de) | 2004-04-01 |
| DE50313074D1 (de) | 2010-10-21 |
| CN1681626A (zh) | 2005-10-12 |
| JP2005537947A (ja) | 2005-12-15 |
| US20070007026A1 (en) | 2007-01-11 |
| EP1539435B1 (de) | 2010-09-08 |
| US8096857B2 (en) | 2012-01-17 |
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