WO2003011519A1 - Handwerkzeugmaschine - Google Patents
Handwerkzeugmaschine Download PDFInfo
- Publication number
- WO2003011519A1 WO2003011519A1 PCT/DE2002/001791 DE0201791W WO03011519A1 WO 2003011519 A1 WO2003011519 A1 WO 2003011519A1 DE 0201791 W DE0201791 W DE 0201791W WO 03011519 A1 WO03011519 A1 WO 03011519A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- shaft bearing
- bearing
- eccentric sleeve
- shaft
- flange
- Prior art date
Links
Classifications
-
- 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
- B24B23/04—Portable grinding machines, e.g. hand-guided; Accessories therefor with oscillating grinding tools; Accessories therefor
Definitions
- the invention is based on a hand tool according to the preamble of claim 1.
- Eccentric grinding machines which have an electric motor arranged in a housing with an armature shaft pointing in the direction of a grinding plate.
- the armature shaft is supported on the side facing the grinding plate via an armature ball bearing in the housing of the eccentric grinding machine.
- the armature shaft is pressed into a bearing seat of an eccentric sleeve and is connected to it in a rotationally fixed manner.
- a sanding plate ball bearing is fastened on the eccentric sleeve, by means of which the sanding plate is mounted on the eccentric sleeve.
- a fan wheel of a fan is attached to the eccentric sleeve in the area of the bearing seat of the armature shaft.
- the invention relates to a hand-held power tool which has a motor arranged in a housing with a motor shaft, which is mounted on a shaft bearing arranged on a side facing a grinding plate and which is connected in a bearing seat to an eccentric sleeve in a rotationally fixed manner.
- the eccentric sleeve at least partially protrude into the shaft bearing in the axial direction and that the axial installation space of the shaft bearing is at least partially, advantageously completely, used to drive the eccentric sleeve.
- Axial installation space can be saved and thus an advantageously low center of gravity and a particularly handy hand-held power tool can be achieved. This has a particularly advantageous effect on hand-held power tools that are guided with one hand via a handle molded onto the housing.
- the solution according to the invention can be used in various drive systems which appear sensible to a person skilled in the art, such as, for example, in pneumatically driven hand-held power tools, etc.
- the solution according to the invention is used particularly advantageously in electrically driven hand-held power tools with an electric motor.
- Electric motors are generally larger and heavier than pneumatic motors, as a result of which the saving of axial installation space and the low center of gravity which can be achieved are particularly advantageous in the case of electrically powered hand-held machine tools.
- a small distance between the shaft bearing and a grinding plate bearing connected to the eccentric sleeve can be achieved by the solution according to the invention, advantageously a distance between 5 mm and 15 mm. Due to the small distance, a more favorable course of forces can be achieved and vibrations can be avoided.
- the grinding plate bearing can be arranged in the eccentric sleeve or advantageously on the eccentric sleeve.
- the shaft bearing is mounted in a housing part via a flange which radially surrounds it and is formed by a separate component, simple assembly of the hand-held power tool can be achieved.
- the shaft bearing and the flange can be preassembled and connected to the housing part in the preassembled state. In principle, however, it is also conceivable that the shaft bearing is mounted directly in the housing of the handheld power tool or in a housing part that supports the motor.
- the flange can be fastened in the housing part by means of various positive, non-positive and / or material connections that appear to be useful to the person skilled in the art, for example by means of an adhesive connection, screw connection, "snap-in connection, etc.” However, if the flange is fastened in the housing part via a press connection, one can simple and quick assembly achieved and additional fasteners can be saved.
- the flange be fastened in the housing part on the side of the shaft bearing facing away from the grinding plate, where can be achieved by an advantageous use of space.
- the eccentric sleeve is designed in one piece with a fan wheel. Additional components, assembly effort, installation space and costs can be saved. However, it is also possible to attach a separate fan wheel to the eccentric sleeve, for example to press it on.
- the solution according to the invention can be used with all handheld power tools that appear to be useful to a person skilled in the art, such as, in particular, with eccentric grinding machines, orbital grinding machines, multi-grinding machines, etc.
- Fig. 1 a longitudinal section through an eccentric loop fmas machine
- Fig. 2 a pre-assembled in a flange shaft bearing
- Fig. 3 the flange of Fig. 2 assembled in a housing part.
- FIG. 1 shows a partial section through an eccentric grinding machine which has an electric motor 12 with an armature shaft 14 arranged in a housing 10.
- the armature shaft 14 is mounted on a shaft bearing 18 arranged on a side facing a grinding plate 16 and is connected in a bearing seat 20 to an eccentric sleeve 22 in a rotationally fixed manner.
- the shaft bearing 18 is formed by a ball bearing, but could also be designed as a plain bearing.
- the eccentric sleeve 22 projects into the shaft bearing 18 in the axial direction 56 or the armature shaft 14 is supported in the shaft bearing 18 via the eccentric sleeve 22, and the axial installation space of the shaft bearing 18 is fully used for the drive connection of the eccentric sleeve 22.
- the eccentric sleeve 22 forms a bearing 46 for the shaft bearing 18 and a bearing 48 for the grinding plate bearing 24 and is made in one piece with a fan wheel 36 of a fan 32.
- the shaft bearing 18 is supported in a housing part 30 via a flange 28 which surrounds it radially and is formed by a separate component (FIG. 3).
- the flange 28 is fastened via a press connection 34 in the housing part 30 of the fan 32, specifically on the side of the shaft bearing 18 facing away from the grinding plate 16.
- the shaft bearing 18 is pressed into the flange 28 (Fig. 2).
- the shaft bearing 18 comes to rest on a side 38 of the flange 28 on the side facing away from the grinding plate 16 and is flush with the flange 28 on the side facing the grinding plate 16.
- the eccentric sleeve 22 is inserted into the shaft bearing 18 and the armature shaft 14 is pressed into the eccentric sleeve 22.
- the eccentric sleeve 22 comes with its end face 58 facing away from the grinding plate 16 against a collar 44 molded onto the armature shaft 14.
- the preassembled assembly consisting of the eccentric sleeve 22, the shaft bearing 18, the flange 28 and the electric motor 12 with its armature shaft 14, is then pressed into a recess 42 of the housing part 30 with a ring plate 40 molded onto the flange 28 or in the housing 10 of the random orbital grinding machine and thereby secured axially, radially and against rotation.
- the grinding plate 16 which forms a preassembled assembly with the grinding plate bearing 24, is pushed onto the bearing point 48 of the eccentric sleeve 22, the grinding plate bearing 24 on the plate 16 facing away from a stop 50 molded onto the eccentric sleeve 22.
- a hexagon head screw 52 is then screwed into the eccentric sleeve 22, with which the grinding plate bearing 24 and the grinding plate 16 are fastened to the eccentric sleeve 22 via a support ring 54.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003516739A JP4431385B2 (ja) | 2001-07-19 | 2002-05-17 | 手持ち工作機械 |
DE50210856T DE50210856D1 (de) | 2001-07-19 | 2002-05-17 | Handwerkzeugmaschine |
US10/344,602 US6942558B2 (en) | 2001-07-19 | 2002-05-17 | Hand-held machine tool |
EP02745060A EP1412128B1 (de) | 2001-07-19 | 2002-05-17 | Handwerkzeugmaschine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10135251.4 | 2001-07-19 | ||
DE10135251A DE10135251A1 (de) | 2001-07-19 | 2001-07-19 | Handwerkzeugmaschine |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003011519A1 true WO2003011519A1 (de) | 2003-02-13 |
Family
ID=7692401
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2002/001791 WO2003011519A1 (de) | 2001-07-19 | 2002-05-17 | Handwerkzeugmaschine |
Country Status (6)
Country | Link |
---|---|
US (1) | US6942558B2 (de) |
EP (1) | EP1412128B1 (de) |
JP (1) | JP4431385B2 (de) |
CN (1) | CN100431792C (de) |
DE (2) | DE10135251A1 (de) |
WO (1) | WO2003011519A1 (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10311474A1 (de) * | 2003-03-15 | 2004-09-23 | Ina-Schaeffler Kg | Bandspannrolle |
ITMI20062311A1 (it) * | 2006-11-30 | 2008-06-01 | Pierluigi Ansaldi | Dispositivo di rilevazione e segnalazione di anomalie nell'impiego di utilizzatori elettrici |
US8381833B2 (en) | 2009-09-24 | 2013-02-26 | Robert Bosch Gmbh | Counterbalance for eccentric shafts |
USD623034S1 (en) | 2009-12-18 | 2010-09-07 | Techtronic Power Tools Technology Limited | Tool arbor |
USD619152S1 (en) | 2009-12-18 | 2010-07-06 | Techtronic Power Tools Technology Limited | Adapter |
USD651062S1 (en) | 2010-09-29 | 2011-12-27 | Milwaukee Electric Tool Corporation | Tool interface for an accessory |
USD646542S1 (en) | 2010-09-29 | 2011-10-11 | Milwaukee Electric Tool Corporation | Accessory interface for a tool |
USD653523S1 (en) | 2010-09-29 | 2012-02-07 | Milwaukee Electric Tool Corporation | Adapter for a tool |
US9746033B2 (en) * | 2013-03-14 | 2017-08-29 | United Technologies Corporation | Eccentrically bored sleeve for locating a bearing |
US9555554B2 (en) | 2013-05-06 | 2017-01-31 | Milwaukee Electric Tool Corporation | Oscillating multi-tool system |
EP3074177B1 (de) * | 2013-11-29 | 2018-12-26 | Black & Decker Inc. | Schleifmaschine mit zweiteiligem gebläse |
EP3501732B1 (de) * | 2018-03-21 | 2020-05-13 | Guido Valentini | Handgeführte werkzeugmaschine zum schleifen oder polieren eines werkstücks zur realisierung von zwei verschiedenen arbeitsbewegungen |
WO2020223562A1 (en) | 2019-04-30 | 2020-11-05 | International Paper Company | Low-density modifier for fiber cement |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3943669A (en) * | 1973-05-09 | 1976-03-16 | Reinhold Stroezel | Gyratory sander |
DE19829190A1 (de) * | 1998-06-30 | 2000-01-05 | Bosch Gmbh Robert | Handschleifmaschine |
DE19852137A1 (de) * | 1998-11-12 | 2000-05-18 | Bosch Gmbh Robert | Motorbetriebene Handschleifmaschine |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2751725A (en) * | 1954-08-13 | 1956-06-26 | Roy J Champayne | Orbital action rubbing machine |
US3555743A (en) * | 1968-04-15 | 1971-01-19 | Skil Corp | Power sander |
DE3620136C5 (de) * | 1986-06-14 | 2007-01-11 | Robert Bosch Gmbh | Motorisch angetriebene Handschleifmaschine mit einem Exzenterantrieb |
GB9123502D0 (en) * | 1991-11-06 | 1992-01-02 | Black & Decker Inc | Sanding apparatus |
DE4206753A1 (de) * | 1992-03-04 | 1993-09-09 | Bosch Gmbh Robert | Exzentertellerschleifer |
US5580302A (en) * | 1994-02-28 | 1996-12-03 | Black & Decker Inc. | Random orbit sander having air directing baffle |
DE19945060B4 (de) * | 1999-09-20 | 2010-12-02 | Robert Bosch Gmbh | Schleifhandwerkzeugmaschine |
-
2001
- 2001-07-19 DE DE10135251A patent/DE10135251A1/de not_active Ceased
-
2002
- 2002-05-17 CN CNB02802429XA patent/CN100431792C/zh not_active Expired - Fee Related
- 2002-05-17 US US10/344,602 patent/US6942558B2/en not_active Expired - Fee Related
- 2002-05-17 DE DE50210856T patent/DE50210856D1/de not_active Expired - Lifetime
- 2002-05-17 WO PCT/DE2002/001791 patent/WO2003011519A1/de active IP Right Grant
- 2002-05-17 JP JP2003516739A patent/JP4431385B2/ja not_active Expired - Fee Related
- 2002-05-17 EP EP02745060A patent/EP1412128B1/de not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3943669A (en) * | 1973-05-09 | 1976-03-16 | Reinhold Stroezel | Gyratory sander |
DE19829190A1 (de) * | 1998-06-30 | 2000-01-05 | Bosch Gmbh Robert | Handschleifmaschine |
DE19852137A1 (de) * | 1998-11-12 | 2000-05-18 | Bosch Gmbh Robert | Motorbetriebene Handschleifmaschine |
Also Published As
Publication number | Publication date |
---|---|
EP1412128B1 (de) | 2007-09-05 |
EP1412128A1 (de) | 2004-04-28 |
DE10135251A1 (de) | 2003-02-06 |
DE50210856D1 (de) | 2007-10-18 |
CN1464811A (zh) | 2003-12-31 |
JP4431385B2 (ja) | 2010-03-10 |
US6942558B2 (en) | 2005-09-13 |
JP2004521769A (ja) | 2004-07-22 |
CN100431792C (zh) | 2008-11-12 |
US20040011545A1 (en) | 2004-01-22 |
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