EP0836544B1 - Elektrische handschleifmaschine - Google Patents

Elektrische handschleifmaschine Download PDF

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Publication number
EP0836544B1
EP0836544B1 EP97915347A EP97915347A EP0836544B1 EP 0836544 B1 EP0836544 B1 EP 0836544B1 EP 97915347 A EP97915347 A EP 97915347A EP 97915347 A EP97915347 A EP 97915347A EP 0836544 B1 EP0836544 B1 EP 0836544B1
Authority
EP
European Patent Office
Prior art keywords
tool
tool holder
sanding
holder
spring wire
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.)
Expired - Lifetime
Application number
EP97915347A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0836544A1 (de
Inventor
Eugen Hild
Joao Bergner
Rudolf Fuchs
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0836544A1 publication Critical patent/EP0836544A1/de
Application granted granted Critical
Publication of EP0836544B1 publication Critical patent/EP0836544B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B24B45/00—Means for securing grinding wheels on rotary arbors
    • B24B45/006—Quick mount and release means for disc-like wheels, e.g. on power tools
    • 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 an electric hand grinder that defined in the preamble of claim 1 Genus.
  • the form-locking elements specified by the tool are manufactured by Support claws formed in pairs in each corner of the Sanding plate are arranged symmetrically to the locking hook, while the corresponding, holder side fixed positive locking elements through two engagement openings are realized on the of the control button opposite side of the tool holder are arranged.
  • the sanding plate can now be removed manually from the tool holder.
  • the spring wire on the tool holder in a Support surface on the tool holder can be swiveled on a parallel plane held and connected with a control button. He's wearing one essentially the number of hooks on the tool side corresponding number of radially inwards Indentations that are in the locking position for the The swivel position of the spring wire forming the grinding tool Reach behind the hook.
  • the Spring wire guided in cross slots by webs on a to the rotary bearing coaxial circular line are arranged so that in Locking position of the spring wire one pair of webs each one of the indentations lies on both sides and the web pairs around preferably the same circumferential angles are offset from one another.
  • the ring-shaped spring wire runs approximately radially in two striving, parallel legs, of which one leg at the free end at right angles to the other Leg is bent. At the free end of the two Leg is the control button clipped onto the leg. This constructive design allows the Spring wire and the control button very easy and quick in the one-piece tool holder made of plastic assemble.
  • the tool and tool holder side Positive locking elements by two axially interlocking Realized polygonal profiles that are coaxial to the axis of the Pivots on facing sides of Grinding tool and tool holder are arranged.
  • Prefers is the tool-side polygon profile on the Inside of a protruding from the top of the grinding tool preferably with this one-piece sleeve and that holder-side polygon profile on the outside of one of the Protruding tool, preferably in one piece, in the Sleeve formed positively insertable pin.
  • the the hooks forming the tool-side locking elements the quick lock are advantageous on the outer wall of the Molded sleeve. This allows all tool-side elements and all holder-side elements when manufacturing the Grinding tool or tool holder molded at the same time become.
  • the swivel bearing designed as a ball bearing in which the holder-side polygonal profile bearing pin and is used in the manufacture of the tool holder from plastic together with the one end of the ball bearing partially covering, cap-like washer in the Tool holder injected.
  • the cap-like washer which still partially overlaps the outer ring of the ball bearing, prevents plastic from spraying above the Ball bearings can flow into this.
  • the Training of the polygon profiles and the arrangement of the hit the tool-side hook in this way that the grinding tool in several, preferably three, by the same circumferential angle offset rotary positions around the pivot axis the tool holder can be attached.
  • the tool holder carries the hand grinder on one Pitch circle on the radial outer area of the tool holder facing surface cone-like feet that form-fit in grab suitable recesses of the sanding plate and as Anti-rotation lock of the sanding plate against the Tool holders serve and therefore a very direct Power transmission between the tool holder and the Allow sanding pads.
  • the grinding tool is a wearing part, that is Quick repositioning of the corner areas compared to the Tool holder or the easy interchangeability of the Grinding tool of considerable advantage. This advantage results from the interaction of the locking means of the Grinding tool with those of the tool holder.
  • the tool holder is also a important component or spare part on which differently designed or equipped grinding tools replace or lockable without auxiliary tools or have it implemented.
  • FIG. 1 The detail in Fig. 1 in side view and partially electric hand grinder shown in section as an orbital sander 9 with a triangular, symmetrical grinding plate trained grinding tool 10 designed.
  • the bottom of the made of plastic Sanding plate is with a Velcro covering 11 for receiving provided sanding sheets, not shown.
  • the Orbital sander has a double-shell machine housing, which is composed of two housing shells 121, 122, which along a parallel to the longitudinal axis of the housing Butt joint 123.
  • an electric motor 13 added, of which only the one on the Output shaft 14 seated fan 15 can be seen.
  • One on the Top of the machine housing 12 arranged in / Switch 16 is used to turn the Electric motor 13.
  • the output shaft 14 drives via Angular gear 17 on a working shaft 18, which in two Ball bearings 19a and 19b fixed to the housing are rotatable is stored and on the lower front of the Machine housing 12 with an eccentric pin 20 from the Machine housing 12 protrudes.
  • the tool holder 22 made of plastic, which is shown in Fig. 2 to 4 shown enlarged in different views is via a vibrating body 23 on the machine housing 12 attached so that when the eccentric pin 20 rotates rotation is prevented and thus only circular Carries out swinging movement.
  • the tool holder 22 is in perspective in Fig. 2 Top view, in Fig. 4 in bottom view and in Fig. 3 in Longitudinal section along line III-III in Fig. 2 enlarged shown.
  • He carries on his from the grinding tool 10 facing away from a central ring connector 30, which in the oscillating body 23 held in the machine housing 12 is insertable and 30 formed on the ring socket 30 cams 31 is held in a rotationally fixed manner in the oscillating body 23.
  • Coaxial to Ring socket 30 sits on the grinding tool 10 facing bottom of the tool holder 22 an inside Hollow pin 32 in the coaxial, the ball bearing 21st is recorded.
  • the axes of Ring connector 30, pin 32 and ball bearing 21 are in Fig. 1st and 3 shown in dash-dotted lines and designated 33, while the axis of the Working shaft 18 is marked with 34.
  • the ring socket 30 On the top, i.e. the orbital sander 9 facing side, are the ring socket 30 with the cams 31 and the pin 32 in one piece with the tool holder 22 and are also molded during the spraying process.
  • the ball bearing 21 is together with the one end of the Ball bearing 21 partially covering, cap-like Washer 35, the outer ring of the ball bearing 21st partially overlaps, during injection molding in the pin 32 injected, the washer 35, the inflow of Prevents plastic in the ball bearing 21.
  • the Underside of the tool carrier 22 on the outside of the Pin 32 formed a symmetrical polygon profile 36, the same of three, offset by 120 ° to each other Circular arc sections 361 are composed of three in turn Same circular arc sections 362 offset from one another by 120 ° are connected in the form of axial strips, the arc radius is larger than that of the circular arc sections 361.
  • FIG. 7 is a plan view of the Top of the grinding tool 10 shows with which the Grinding tool 10 on the contact surface 37 on the tool holder 22 supports, stands on the top of the grinding tool 10 a sleeve 38 integral with the grinding tool 10 the inside of which has a polygon profile 36 corresponding, negative or hollow polygon profile 39 is formed with circular arc sections 391 and 392, wherein the sections 392 as axial grooves for receiving the through the circular arc sections 362 determine axial strips are designed so that when placing the grinding tool 10 on the support surface 37 on the tool holder 22 the two Interlock polygon profiles 36,39 and that Grinding tool 10 against rotation on the tool holder 22 establish.
  • the two polygon profiles 36, 39 thus represent the fixed holder and tool side mentioned at the beginning, mutually corresponding positive locking elements between tool holder 22 and grinding tool 10.
  • the tool-side locking elements 40 as one piece the grinding tool 10 integrally formed hook 42, the on a circular line by the same angle of rotation to each other are arranged offset and from which the bearing surface 37 on Tool holder 22 facing top of the grinding tool 10 stand out.
  • the hooks 42 are for the sake of simplicity molded onto the outside of the sleeve 38, the inner jacket the polygon profile 39 carries.
  • the interacting with it holder-side locking elements 41 are from a ring-shaped spring wire 43 is formed, which in FIG. 4 and 6 is shown.
  • the spring wire 43 has one of the Number of hooks 42 on the sleeve 38 corresponding number, here three indentations 431 pointing radially inwards, corresponding to the hook 42 in turn by the same angle of rotation are arranged offset to each other.
  • FIGS. 3 and 4 it is ring-shaped curved spring wire 43 in outer slots 51 of webs 44 rotatable or with its legs 432, 433 in Guide slot 53 to one side, in Figure 3 in the Drawing levels into it, pivotable on the tool holder 22 recorded on a to the axis 33 of the pin 32 or of the ball bearing 21 coaxial pitch circle are arranged and integrally with the tool holder 22 from this down protrude.
  • the webs 44 are arranged in pairs so that in the locking position of the spring wire 43, as shown in FIG. 4 is shown, a pair of webs on both sides of one Indentation 431 lies.
  • the pairs of bridges are in turn offset from each other by the same circumferential angle.
  • the ring-shaped curved spring wire 43 runs approximately radially in two striving, mutually parallel legs 432 and 433.
  • One leg 432 is bent at right angles at the end and lies in front of the straight end of leg 433. Die Legs 432, 433 pass through the opening 52 in the front Tip of the tool holder 22.
  • the Control button 25 of the quick lock 24 can be clipped on and is thereby carried by the spring wire 43.
  • the Control button 25 on its underside corresponding grooves and Lugs on, as shown in Fig. 5.
  • the Leg 432 of the spring wire 43 (Fig. 6) is in the Groove 45 indented, with its bent end in the Cross groove 47 comes to rest while the other leg 433 is clipped into the groove 46.
  • the grooves 45-47 each assigned locking lugs 48 - 50 ensure a safe Connection between the legs 432.433 and the control button 22.
  • the grinding tool 10 on the tool holder 22 are clipped on.
  • the control button 25 can then be omitted as well as the rotatable mounting of the Spring wire 43 in the transverse slots 51 of the webs 44.
  • FIG. 8 The spatial bottom view of another shown in FIG. 8 Embodiment of the tool holder according to the invention
  • 222 goes over the exemplary embodiment according to FIG. 4 beyond when there were six down, perpendicular to the Underside or the support surface 237 protruding, has cylindrical, cone-like feet 254 with crowned or chamfered free ends.
  • the tool holder 222 has a suction channel 229 symmetrical polygon profile 236 with 120 ° each offset, identical circular arc sections 461, 462, webs 244 without inserted spring wire and without Control button and a recess 252 for the passage of the Leg of the spring wire corresponding to FIG. 4.
  • Fig. 9 shows a top view of the top of another Embodiment of the grinding tool 100 that up to Guide holes 660 with the grinding tool 10 according to FIG. 7 matches and for coupling with the tool holder 222 8 is provided.
  • the grinding tool 100 is supported on the contact surface 237 on the tool holder 222 according to FIG. From the top of the Grinding tool 100 is one with the grinding tool 100 one-piece sleeve 380, on the inside of which the Polygon profile 236 of the tool holder 222 accordingly negative or hollow polygon profile 390 with Circular arc sections 491 and 492 is formed. At the Place the grinding tool 100 on the support surface 370 the two polygon profiles 236 engage on the tool holder 222, 390 interlocking and insert the grinding tool 100 non-rotatable on the tool holder 222.
  • the two Polygon profiles 236, 390 form the holder-side mentioned and determined on the tool side, corresponding to each other Positive locking elements between tool holder 222 and Grinding tool 100.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP97915347A 1996-05-02 1997-03-13 Elektrische handschleifmaschine Expired - Lifetime EP0836544B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19617572 1996-05-02
DE19617572A DE19617572A1 (de) 1996-05-02 1996-05-02 Elektrische Handschleifmaschine
PCT/DE1997/000496 WO1997042002A1 (de) 1996-05-02 1997-03-13 Elektrische handschleifmaschine

Publications (2)

Publication Number Publication Date
EP0836544A1 EP0836544A1 (de) 1998-04-22
EP0836544B1 true EP0836544B1 (de) 2002-01-02

Family

ID=7793091

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97915347A Expired - Lifetime EP0836544B1 (de) 1996-05-02 1997-03-13 Elektrische handschleifmaschine

Country Status (6)

Country Link
US (1) US6004194A (zh)
EP (1) EP0836544B1 (zh)
JP (1) JPH11508833A (zh)
CN (1) CN1066994C (zh)
DE (2) DE19617572A1 (zh)
WO (1) WO1997042002A1 (zh)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6386961B1 (en) 1999-07-19 2002-05-14 Thomas D. Cureton Hand held grinder
DE10003504C2 (de) * 2000-01-27 2001-11-15 Kompernas Handelsgmbh Handschleifgerät
DE10017981A1 (de) * 2000-04-11 2001-10-25 Bosch Gmbh Robert Werkzeugaufnahme
DE10328967A1 (de) * 2003-06-26 2005-01-13 Robert Bosch Gmbh Motorgetriebenes Handschleifwerkzeug
JP4866569B2 (ja) * 2005-05-27 2012-02-01 日東工器株式会社 研磨工具
CA2529354A1 (en) * 2005-12-08 2007-06-08 Luigi Panfili Sanding device, system including the same, and method of operating associated thereto
US20080072386A1 (en) * 2006-09-27 2008-03-27 The Malish Corporation Locking coupler for floor maintenance pad
ATE455622T1 (de) * 2006-10-24 2010-02-15 Bosch Gmbh Robert Elektrohandwerkzeugmaschine zum durchführen von schleifarbeiten, insbesondere schwingschleifer
US7736216B2 (en) * 2008-08-20 2010-06-15 Black & Decker Inc. Sander having removable platen
US8172642B2 (en) * 2008-08-20 2012-05-08 Black & Decker Inc. Multi-sander
USD619152S1 (en) 2009-12-18 2010-07-06 Techtronic Power Tools Technology Limited Adapter
USD623034S1 (en) 2009-12-18 2010-09-07 Techtronic Power Tools Technology Limited Tool arbor
DE102010028302A1 (de) * 2010-04-28 2011-12-01 Hilti Aktiengesellschaft Bohrwerkzeug
USD651062S1 (en) 2010-09-29 2011-12-27 Milwaukee Electric Tool Corporation Tool interface for an accessory
USD653523S1 (en) 2010-09-29 2012-02-07 Milwaukee Electric Tool Corporation Adapter for a tool
USD646542S1 (en) 2010-09-29 2011-10-11 Milwaukee Electric Tool Corporation Accessory interface for a tool
US9421682B2 (en) 2011-07-18 2016-08-23 Black & Decker Inc. Multi-head power tool with reverse lock-out capability
USD753355S1 (en) 2012-11-07 2016-04-05 Grillbot, Llc Grill cleaning device
USD734116S1 (en) * 2012-06-27 2015-07-14 Kwai Sun Oliver Wong Replacement head for a hand-held sanding implement
US9555554B2 (en) 2013-05-06 2017-01-31 Milwaukee Electric Tool Corporation Oscillating multi-tool system
US9956677B2 (en) 2013-05-08 2018-05-01 Black & Decker Inc. Power tool with interchangeable power heads
CA2822631A1 (en) 2013-08-01 2015-02-01 A. Richard Tools Co./Outils A. Richard Co. Sanding device, and sanding assembly including the same
US9387578B2 (en) * 2013-10-28 2016-07-12 Black & Decker Inc. Handle arrangement for sander
US9475172B2 (en) 2014-07-15 2016-10-25 Milwaukee Electric Tool Corporation Adjustable guard for power tool
DE102017213669A1 (de) * 2016-08-22 2018-02-22 Robert Bosch Gmbh Werkzeugeinrichtung für eine Handwerkzeugmaschine
JP6449840B2 (ja) * 2016-12-27 2019-01-09 株式会社Ｍｈｉエアロスペースプロダクション 航空機外板の補修方法、電動工具及びアタッチメント
DE102017214118A1 (de) * 2017-08-11 2019-02-14 Robert Bosch Gmbh Schnellspannvorrichtung für eine, insbesondere zumindest eine rotierend antreibbare Abtriebswelle aufweisende, tragbare Werkzeugmaschine, insbesondere Winkelschleifmaschine
US11396085B2 (en) * 2017-09-15 2022-07-26 Diamond Productions Ltd. Adapter for coupling abrasive elements to a floor finishing machine
USD925623S1 (en) * 2019-02-28 2021-07-20 Guido Valentini Protective cap
USD951739S1 (en) * 2019-04-18 2022-05-17 Mirka Ltd Backing pad for sander
USD952431S1 (en) * 2020-10-23 2022-05-24 Jing Men Jun Kai E-commerce Co., Ltd. Polishing pad
USD952432S1 (en) * 2020-10-23 2022-05-24 Jing Men Jun Kai E-commerce Co., Ltd. Polishing pad
USD968186S1 (en) * 2020-11-09 2022-11-01 Lake Country Tool, Llc Polishing pad
CN112872896A (zh) * 2021-02-23 2021-06-01 江西经济管理干部学院 一种航空机械产品用多功能加工台
USD980032S1 (en) * 2022-08-23 2023-03-07 Jiangzhao Liu Polishing pad

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Publication number Priority date Publication date Assignee Title
US5309682A (en) * 1990-03-28 1994-05-10 Robert Bosch Gmbh Hand held power tool with working disc
DE4113641A1 (de) * 1991-04-26 1992-10-29 Bosch Gmbh Robert Handwerkzeugmaschine
DE4223107A1 (de) * 1992-07-14 1994-01-20 Bosch Gmbh Robert Flächenschleifmaschine
US5626510A (en) * 1993-02-04 1997-05-06 Robert Bosch Gmbh Power tool for surface treatment
DE4303044A1 (de) * 1993-02-04 1994-08-11 Bosch Gmbh Robert Handwerkzeugmaschine zur Flächenbearbeitung
US5470272A (en) * 1994-02-03 1995-11-28 Ryobi Motor Products Corp. Removable working tool assembly

Also Published As

Publication number Publication date
DE59706088D1 (de) 2002-02-28
CN1190362A (zh) 1998-08-12
DE19617572A1 (de) 1997-11-13
JPH11508833A (ja) 1999-08-03
CN1066994C (zh) 2001-06-13
US6004194A (en) 1999-12-21
EP0836544A1 (de) 1998-04-22
WO1997042002A1 (de) 1997-11-13

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