EP0836543A1 - Hand-operated orbital sander - Google Patents

Hand-operated orbital sander

Info

Publication number
EP0836543A1
EP0836543A1 EP97915266A EP97915266A EP0836543A1 EP 0836543 A1 EP0836543 A1 EP 0836543A1 EP 97915266 A EP97915266 A EP 97915266A EP 97915266 A EP97915266 A EP 97915266A EP 0836543 A1 EP0836543 A1 EP 0836543A1
Authority
EP
European Patent Office
Prior art keywords
housing
tool holder
orbital sander
outer ring
ring
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
Application number
EP97915266A
Other languages
German (de)
French (fr)
Other versions
EP0836543B1 (en
Inventor
Eugen Hild
Joao Bergner
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 EP0836543A1 publication Critical patent/EP0836543A1/en
Application granted granted Critical
Publication of EP0836543B1 publication Critical patent/EP0836543B1/en
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
    • 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-guided
  • Center bar are attached to the tool holder and protrude from it parallel to the pivot axis and with their shorter cross bar lie positively in recesses formed in the housing.
  • the hand-held orbital sander according to the invention with the characterizing features of claim 1 has the advantage that a symmetrical force distribution takes place by the oscillating body designed according to the invention for flexible connection of the tool holder to the housing.
  • the torque of the tool holder with vibrating body can be varied as required via the hardness or thickness of the elastic molded part.
  • the oscillating body ideally fulfills the requirements for a "hard” rotation on the one hand, which is advantageous for grinding abrasion, and a "soft” displacement via the eccentric pin on the other hand, which is advantageous for loading the rotary bearing.
  • the oscillating body according to the invention enables a compact and flat design of the orbital sander and additionally acts as a seal against the grinding dust on the lower bearing of a working shaft driven by the electric motor and supporting the eccentric pin.
  • Fig. 2 is a plan view of a SchwingSh ⁇ in
  • FIG. 3 shows a side view of the oscillating body according to FIG. 2 with a section along line III-III in FIG. 2 in the right part of the illustration,
  • FIGS. 2 and 3 are bottom views of an inner ring of the vibrating body in FIGS. 2 and 3.
  • the hand-held, in particular electric orbital sander shown in detail in a side view and partially in section in FIG. 1 is embodied as a so-called delta sander, which carries a triangular, symmetrical sanding plate as the grinding tool 10.
  • the underside of the sanding plate made of plastic is provided with a Velcro covering 11 for receiving sanding sheets, not shown.
  • the orbital sander can also be equipped with a rectangular grinding plate or with other grinding tools, e.g. one
  • Flap grinding attachment or a grinding tongue or a grinding tube can be operated.
  • the orbital sander has a double-shell housing 12, which is composed of two housing shells 121, 122, which abut one another along a parting line 123 running parallel to the longitudinal axis of the housing.
  • An electric motor 13 is accommodated in the housing 12, of which only the fan 15 seated on the output shaft 14 can be seen in FIG. 1 is.
  • a switching slide 16 arranged on the top of the housing 12 serves to switch the electric motor 13 on and off.
  • the output shaft 14 drives a working shaft 18 via an angular gear 17, which is rotatably mounted in two ball bearings 19a and 19b fixed to the housing and on the lower end face of the Housing 12 with an eccentric pin 20 protrudes from the housing 12.
  • Tool holder 22 and grinding tool 10 are matched in shape, so that the grinding tool 10 lies flat against the tool holder 22.
  • the tool holder 22 made of plastic is fixed to the housing 12 by means of a flexible oscillating body 23 and is thus secured against rotation when the eccentric pin 20 rotates. If the electric motor 13 is switched on by means of the slide switch 16, it drives the working shaft 18 via the angular gear 17, which rotates about its axis 24.
  • the oscillating body 23 which is shown in FIGS. 2 and 3 in plan view and in side view or in section, is designed as a ring which can be attached to the tool holder 22 with its radially inner region and to the housing 12 with its radially outer region .
  • the oscillating body 23 consists of an inner ring 26, an outer ring 27 arranged concentrically therewith and an annular shaped part 28 made of elastic material which connects the inner and outer rings 26, 27 to one another.
  • Inner ring 26 and outer ring 27 are made of plastic and the molded part 28 is made of rubber or an injectable soft plastic. As can be seen from FIG.
  • the annular shaped part 28 has an N-shaped cross section, the two axially extending concentric, annular legs 281, 282 being firmly connected to the inner ring 26 and the outer ring 27, respectively.
  • this can also have an M-shaped cross section, as is shown for the oscillating body 23 in FIG. 1.
  • the inner ring 26 is coaxial with the tool holder 22
  • the outer ring 27 carries, on its outer side, one-piece molded knobs 29, 30 distributed over the circumference, which fit positively in corresponding grooves formed in the housing 12.
  • the two diametrically opposite knobs 30 are T-shaped in such a way that their central web 301 strives radially away from the outer ring 27 and the cross web 302 is received in a groove 31, half of which is in each Housing shell 121,122 is formed up to the parting line 123.
  • FIG. 1 only the groove halves of the two grooves 31 are shown, which are formed in the housing shell 121.
  • the inner ring 26 is pushed onto an annular connector 32 formed on the upper side of the tool holder 22 coaxially to the axis 25 of the ball bearing 21 and firmly connected to it, e.g. welded or glued.
  • annular connector 32 formed on the upper side of the tool holder 22 coaxially to the axis 25 of the ball bearing 21 and firmly connected to it, e.g. welded or glued.
  • integrally molded positioning cams 33 are formed on the lower end face of the inner ring 26 and are formed over the circumference and which are formed when the ring body 23 is attached to the ring connector 32 Immerse the corresponding recesses on the ring connector 32 in a form-fitting manner.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

The invention concerns a hand-operated orbital sander comprising a housing (12) and a tool holder (22) which holds a grinding tool (10) and is mounted via a rotary bearing (21) on a rotating eccentric pin (20) which projects out of the housing (12). In order to prevent the tool holder (22) from being entrained in rotation, an oscillating element (23) is provided with an inner ring (26), an outer ring (27) and a moulded part (28) of resilient material for interconnecting the two rings. The inner ring (26) is secured on the tool holder (22), coaxially to the rotary bearing (21), and the outer ring (27) is held in a rotationally rigid manner in the housing (22). The oscillating element (23) distributes the force symmetrically, enabling the twisting moment of the tool holder (22) with the grinding tool (10) to be adjusted as necessary via the hardness or thickness of the resilient moulded part (28).

Description

Handαeführter SchwingschleiferHand-held orbital sander
Stand der TechnikState of the art
Die Erfindung geht aus von einem handgeführten,The invention is based on a hand-guided,
Schwingschleifer der im Oberbegriff des Anspruchs 1 definierten Gattung.Orbital sander of the type defined in the preamble of claim 1.
Bei einem bekannten handgeführten Schwingschleifer dieser Art, auch elektrische Handschwingεchleifmaschine genannt (EP 0 610 801 AI) , ist die flexible Anbindung des Werkzeughalters mit Schleifwerkzeug an das den elektrischen Antriebsmotor für den rotierenden Exzenterzapfen enthaltende Gehäuse durch Schwingelemente mit T-Profil gebildet, die jeweils mit ihrem langen, stabförmigenIn a known hand-held orbital sander of this type, also called an electric hand-held orbital sander (EP 0 610 801 AI), the flexible connection of the tool holder with abrasive tool to the housing containing the electric drive motor for the rotating eccentric pin is formed by oscillating elements with a T-profile, each with her long, rod-shaped
Mittelsteg an dem Werkzeughalter befestigt sind und von diesem parallel zur Drehlagerachse abstehen und mit ihrem kürzeren Quersteg in im Gehäuse ausgebildeten Aussparungen formschlüssig einliegen. Vorteile der ErfindungCenter bar are attached to the tool holder and protrude from it parallel to the pivot axis and with their shorter cross bar lie positively in recesses formed in the housing. Advantages of the invention
Der erfindungsgemäße handgeführte Schwingschleifer mit den kennzeichnenden Merkmalen des Anspruchs 1 hat demgegenüber den Vorteil, daß durch den erfindungsgemäß ausgebildeten Schwingkörper zur flexiblen Anbindung des Werkzeughalters an das Gehäuse eine symmetrische Kraftverteilung erfolgt. Das Verdrehmoment des Werkzeughalters mit Schwingkörper kann über die Härte oder Dicke des elastischen Formteils bedarfsgerecht variiert werden. Der Schwingkörper erfüllt in idealer Weise die Forderungen nach einer möglichst "harten" Verdrehung einerseits, was vorteilhaft für den Schleifabtrag ist, und einer "weichen" Verschiebung über den Exzenterzapfen andererseits, was vorteilhaft für die Belastung des Drehlagers ist.The hand-held orbital sander according to the invention with the characterizing features of claim 1 has the advantage that a symmetrical force distribution takes place by the oscillating body designed according to the invention for flexible connection of the tool holder to the housing. The torque of the tool holder with vibrating body can be varied as required via the hardness or thickness of the elastic molded part. The oscillating body ideally fulfills the requirements for a "hard" rotation on the one hand, which is advantageous for grinding abrasion, and a "soft" displacement via the eccentric pin on the other hand, which is advantageous for loading the rotary bearing.
Der erfindungsgemäße Schwingkörper ermöglicht eine kompakte und flache Bauweise des Schwingschleifers und wirkt zusätzlich als Dichtung gegen den Schleifstaub am unteren Lager einer den Exzenterzapfen endseitig tragenden, vom Elektromotor angetriebenen Arbeitswelle.The oscillating body according to the invention enables a compact and flat design of the orbital sander and additionally acts as a seal against the grinding dust on the lower bearing of a working shaft driven by the electric motor and supporting the eccentric pin.
Durch die in den weiteren Ansprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Anspruch 1 angegebenen handgeführten Schwingschleifers möglich.The measures listed in the further claims allow advantageous developments and improvements of the hand-held orbital sander specified in claim 1.
Zeichnungdrawing
Die Erfindung ist anhand eines in der Zeichnung dargestellten Ausführungsbeispiels in der nachfolgenden Beschreibung näher erläutert. Es zeigen: Fig. l ausschnittweiεe eine Seitenansicht eines handgeführten, elektrischen Schwingschleiferε, teilweise geschnitten,The invention is explained in more detail in the following description with reference to an embodiment shown in the drawing. Show it: 1 is a partial side view of a hand-held, electric orbital sander, partially cut,
Fig. 2 eine Draufsicht eines Schwingkörperε imFig. 2 is a plan view of a Schwingkörperε in
Schwingschleifer gemäß Fig. 1,Orbital sander according to FIG. 1,
Fig. 3 eine Seitenansicht des Schwingkörpers gemäß Fig. 2 mit Schnitt gemäß Linie III-III in Fig. 2 im rechten Teil der Darstellung,3 shows a side view of the oscillating body according to FIG. 2 with a section along line III-III in FIG. 2 in the right part of the illustration,
Fig. 4 eine Unteransicht eines Innenrings des Schwingkörpers in Fig. 2 und 3.4 is a bottom view of an inner ring of the vibrating body in FIGS. 2 and 3.
Beschreibung des AusführungsbeispielεDescription of the embodiment
Der in Fig. 1 ausschnittweise in Seitenansicht und teilweise geschnitten dargestellte handgeführte, insbesondere elektrische Schwingschleifer ist alε sog. Deltaschleifer ausgeführt, der eine dreieckförmige, symmetrische Schleifplatte als Schleifwerkzeug 10 trägt. Die Unterseite der aus Kunststoff gefertigten Schleifplatte ist mit einem Klettbelag 11 zur Aufnahme von nicht dargestellten Schleifblättern versehen. Der Schwingschleifer kann aber ebenso mit einer rechteckförmigen Schleifplatte ausgerüstet sein oder mit anderen Schleifwerkzeugen, wie z.B. einemThe hand-held, in particular electric orbital sander shown in detail in a side view and partially in section in FIG. 1 is embodied as a so-called delta sander, which carries a triangular, symmetrical sanding plate as the grinding tool 10. The underside of the sanding plate made of plastic is provided with a Velcro covering 11 for receiving sanding sheets, not shown. The orbital sander can also be equipped with a rectangular grinding plate or with other grinding tools, e.g. one
Lamellenschleifvorsatz oder einer Schleifzunge oder einem Schleifröhr betrieben werden.Flap grinding attachment or a grinding tongue or a grinding tube can be operated.
Der Schwingschleifer besitzt ein zweischaliges Gehäuse 12, das aus zwei Gehäuseschalen 121,122 zusammengesetzt ist, die längs einer parallel zur Gehäuselängsachεe verlaufenden Trennfuge 123 aneinanderstoßen. Im Gehäuse 12 ist ein Elektromotor 13 aufgenommen, von dem in Fig. 1 lediglich der auf der Abtriebswelle 14 sitzende Lüfter 15 zu sehen ist. Ein auf der Oberseite des Gehäuses 12 angeordneter Schaltschieber 16 dient zum Ein- und Ausschalten des Elektromotors 13. Die Abtriebswelle 14 treibt über ein Winkelgetriebe 17 eine Arbeitswelle 18 an, die in zwei gehäusefesten Kugellagern 19a und 19b drehbar gelagert ist und an der unteren Stirnseite des Gehäuses 12 mit einem Exzenterzapfen 20 aus dem Gehäuse 12 vorsteht. Auf dem Exzenterzapfen 20 sitzt ein Werkzeughalter 22 mit einem in dem Werkzeughalter 22 eingepreßten Kugellager 21, der an seiner Unterseite das plattenförmige Schleifwerkzeug 10 drehfeεt und axial unverschieblich aufnimmt. Werkzeughalter 22 und Schleifwerkzeug 10 sind in ihrer Form einander angepaßt, so daß das Schleifwerkzeug 10 plan an dem Werkzeughalter 22 anliegt. Der aus Kunststoff gefertigte Werkzeughalter 22 ist über einen flexiblen Schwingkörper 23 am Gehäuse 12 festgelegt und damit gegen Drehmitnahme bei rotierendem Exzenterzapfen 20 gesichert. Wird mittels des Schaltschiebers 16 der Elektromotor 13 eingeschaltet, so treibt dieser über das Winkelgetriebe 17 die Arbeitswelle 18 an, die um ihre Achse 24 rotiert. Der Exzenterzapfen 20, dessen Achse 25 um das Exzentermaß gegenüber der Achse 24 der Arbeitswelle 18 versetzt ist, führt eine Kreisbewegung aus, wodurch der Werkzeughalter 22, der durch den flexiblen Schwingkörper 23 an einer Drehmitnahme gehindert ist, in eine kreisende Schwingbewegung versetzt wird.The orbital sander has a double-shell housing 12, which is composed of two housing shells 121, 122, which abut one another along a parting line 123 running parallel to the longitudinal axis of the housing. An electric motor 13 is accommodated in the housing 12, of which only the fan 15 seated on the output shaft 14 can be seen in FIG. 1 is. A switching slide 16 arranged on the top of the housing 12 serves to switch the electric motor 13 on and off. The output shaft 14 drives a working shaft 18 via an angular gear 17, which is rotatably mounted in two ball bearings 19a and 19b fixed to the housing and on the lower end face of the Housing 12 with an eccentric pin 20 protrudes from the housing 12. On the eccentric pin 20 sits a tool holder 22 with a ball bearing 21 pressed into the tool holder 22, which on its underside accommodates the plate-shaped grinding tool 10 in a rotationally fixed manner and axially immovably. Tool holder 22 and grinding tool 10 are matched in shape, so that the grinding tool 10 lies flat against the tool holder 22. The tool holder 22 made of plastic is fixed to the housing 12 by means of a flexible oscillating body 23 and is thus secured against rotation when the eccentric pin 20 rotates. If the electric motor 13 is switched on by means of the slide switch 16, it drives the working shaft 18 via the angular gear 17, which rotates about its axis 24. The eccentric pin 20, the axis 25 of which is offset by the eccentric dimension with respect to the axis 24 of the working shaft 18, executes a circular movement, as a result of which the tool holder 22, which is prevented from being driven by the flexible oscillating body 23, is set into a circular oscillating movement.
Der Schwingkörper 23, der in Fig. 2 und 3 in Draufsicht und in Seitenansicht bzw. im Schnitt dargestellt ist, ist als Ring ausgebildet, der mit seinem radial innen liegenden Bereich am Werkzeughalter 22 und mit seinem radial außen liegenden Bereich am Gehäuse 12 befeεtigbar ist. Insbesondere besteht der Schwingkörper 23 aus einem Innenring 26, einem dazu konzentrisch angeordneten Außenring 27 und einem ringförmigen Formteil 28 aus elastischem Material, das Innen- und Außenring 26,27 miteinander verbindet. Innenring 26 und Außenring 27 sind aus Kunststoff und das Formteil 28 ist aus Gummi oder aus einem εpritzbaren Weichkunststoff hergestellt . Wie aus Fig. 3 ersichtlich ist, weist das ringförmige Formteil 28 einen N-förmigen Querschnitt auf, wobei die beiden axial verlaufenden konzentrischen, ringförmigen Schenkel 281,282 jeweils fest mit dem Innenring 26 bzw. dem Außenring 27 verbunden sind. In Abwandlung des Formteils 28 kann dieses auch einen M-förmigen Querschnitt aufweisen, wie dies bei dem Schwingkörper 23 in Fig. 1 dargestellt ist. Der Innenring 26 ist am Werkzeughalter 22 koaxial zumThe oscillating body 23, which is shown in FIGS. 2 and 3 in plan view and in side view or in section, is designed as a ring which can be attached to the tool holder 22 with its radially inner region and to the housing 12 with its radially outer region . In particular, the oscillating body 23 consists of an inner ring 26, an outer ring 27 arranged concentrically therewith and an annular shaped part 28 made of elastic material which connects the inner and outer rings 26, 27 to one another. Inner ring 26 and outer ring 27 are made of plastic and the molded part 28 is made of rubber or an injectable soft plastic. As can be seen from FIG. 3, the annular shaped part 28 has an N-shaped cross section, the two axially extending concentric, annular legs 281, 282 being firmly connected to the inner ring 26 and the outer ring 27, respectively. In a modification of the molded part 28, this can also have an M-shaped cross section, as is shown for the oscillating body 23 in FIG. 1. The inner ring 26 is coaxial with the tool holder 22
Kugellager 21 befestigt und der Außenring 27 ist im Gehäuse 12 drehtest gehalten. Hierzu trägt der Außenring 27 auf seiner Außenseite über den Umfang verteilt angeordnete, einstückig angeformte Noppen 29,30, die formschlüssig in korrespondierenden, im Gehäuse 12 ausgebildeten Nuten einliegen. Von den insgesamt hier sechs vorgesehenen Noppen 29,30 sind die beiden sich diametral gegenüberliegenden Noppen 30 T-förmig so ausgebildet, daß jeweils ihr Mittelsteg 301 radial vom Außenring 27 wegstrebt und der Quersteg 302 in einer Nut 31 aufgenommen ist, die hälftig in je einer Gehäuseschale 121,122 bis zur Trennfuge 123 reichend ausgebilde ist. In Fig. 1 sind von den beiden Nuten 31 jeweils nur die Nuthälften zu sehen, die in der Gehäuseschale 121 ausgebildet sind. Der Innenring 26 wird auf einen auf der Oberseite des Werkzeughalters 22 koaxial zur Achse 25 des Kugellagers 21 ausgebildeten Ringstutzen 32 aufgeschoben und mit diesem fest verbunden, z.B. verschweißt oder verklebt. Zur genauen Ausrichtung des Ringkörpers 23 beim Aufsetzen auf den Ringεtutzen 32 sind an der unteren Stirnseite des Innenrings 26 über den Umfang verteilt angeordnete, einstückig angeformte Positioniernocken 33 (Fig. 3 und 4) ausgeformt, die beim Aufstecken des Ringkörpers 23 auf den Ringstutzen 32 in entsprechende Aussparungen am Ringstutzen 32 formschlüssig eintauchen. Ball bearing 21 attached and the outer ring 27 is held in the housing 12 rotation test. For this purpose, the outer ring 27 carries, on its outer side, one-piece molded knobs 29, 30 distributed over the circumference, which fit positively in corresponding grooves formed in the housing 12. Of the six knobs 29, 30 provided here, the two diametrically opposite knobs 30 are T-shaped in such a way that their central web 301 strives radially away from the outer ring 27 and the cross web 302 is received in a groove 31, half of which is in each Housing shell 121,122 is formed up to the parting line 123. In FIG. 1, only the groove halves of the two grooves 31 are shown, which are formed in the housing shell 121. The inner ring 26 is pushed onto an annular connector 32 formed on the upper side of the tool holder 22 coaxially to the axis 25 of the ball bearing 21 and firmly connected to it, e.g. welded or glued. For precise alignment of the ring body 23 when it is placed on the ring connector 32, integrally molded positioning cams 33 (FIGS. 3 and 4) are formed on the lower end face of the inner ring 26 and are formed over the circumference and which are formed when the ring body 23 is attached to the ring connector 32 Immerse the corresponding recesses on the ring connector 32 in a form-fitting manner.

Claims

Ansprüche Expectations
1. Handgeführter Schwingschleifer mit einem Gehäuse (12) und mit einem ein Schleifwerkzeug (10) aufnehmenden Werkzeughalter (22) , der über ein Drehlager (21) auf einem aus dem Gehäuse (12) vorstehenden, rotierenden Exzenterzapfen (20) sitzt und mittels mindestens eines Schwingkörpers (23) gegen Drehmitnahme flexibel am Gehäuse (12) angebunden ist, dadurch gekennzeichnet, daß der Schwingkörper (23) als Ring ausgebildet ist, der mit seinem radial innen liegenden Bereich am Werkzeughalter (22) und mit seinem radial außen liegenden Bereich am Gehäuse (12) befestigbar ist.1. Hand-held orbital sander with a housing (12) and with a grinding tool (10) receiving tool holder (22), which sits on a rotating bearing (21) on a projecting from the housing (12), rotating eccentric pin (20) and by means of at least a vibrating body (23) is flexibly connected to the housing (12) against rotational driving, characterized in that the vibrating body (23) is designed as a ring with its radially inner region on the tool holder (22) and with its radially outer region on Housing (12) can be fastened.
2. Schwingschleifer nach Anspruch 1, dadurch gekennzeichnet, daß der Schwingkörper (23) aus einem Innenring (26) , einem dazu konzentrisch angeordneten Außenring (27) und einem Innen- und Außenring (26,27) miteinander verbindenden ringförmigen Formteil (28) aus elastischem Material besteht, und daß der2. Orbital sander according to claim 1, characterized in that the oscillating body (23) consists of an inner ring (26), an concentrically arranged outer ring (27) and an inner and outer ring (26, 27) interconnecting annular molded part (28) resilient material, and that the
Innenring (26) am Werkzeughalter (22), im wesentlichen koaxial zum Drehlager (21) , befestigbar und der Außenring (27) im Gehäuse (12) drehfeεt halterbar ist.Inner ring (26) on the tool holder (22), essentially can be fastened coaxially to the rotary bearing (21) and the outer ring (27) can be held in the housing (12) in a rotationally fixed manner.
3. Schwingschleifer nach Anspruch 2, dadurch gekennzeichnet, daß der Außenring (27) auf seiner Außenseite über den Umfang verteilt angeordnete, einstückig angeformte Noppen (29,30) trägt, die formschlüssig in korrespondierenden, im Gehäuse (12) ausgebildeten Nuten (31) einliegen.3. Orbital sander according to claim 2, characterized in that the outer ring (27) on its outside over the circumference arranged, integrally molded knobs (29,30) carries, which form-fitting in corresponding, in the housing (12) formed grooves (31) inlay.
4. Schwingschleifer nach Anspruch 3, dadurch gekennzeichnet, daß das Gehäuse (12) aus zwei Gehäuseschalen (121,122) besteht, die längs einer parallel zur Gehäuselängsachse verlaufenden Trennfuge (123) zusammengesetzt sind, und daß von den am4. Orbital sander according to claim 3, characterized in that the housing (12) consists of two housing shells (121, 122) which are assembled along a separating joint (123) running parallel to the longitudinal axis of the housing, and that of the
Außenring (27) des Schwingkörperε (23) angeformten Noppen (30) zwei diametrale Noppen (30) T-förmig so ausgebildet sind, daß jeweils der Mittelsteg (301) jedes Noppens (30) radial vom Außenring (27) wegstrebt und der Quersteg (302) jedes Noppens (30) in einer Nut (31) aufgenommen ist, die hälftig in je einer Gehäuseschale (121,122) bis zur Trennfuge (123) reichend ausgebildet ist.Outer ring (27) of the vibrating body (23) molded-on knobs (30), two diametrical knobs (30) are T-shaped so that the central web (301) of each knob (30) strives radially away from the outer ring (27) and the cross web ( 302) of each knob (30) is received in a groove (31), half of which is formed in a housing shell (121, 122) reaching to the parting line (123).
5. Schwingschleifer nach einem der Ansprüche 2 - 4, dadurch gekennzeichnet, daß am Werkzeughalter (22) ein Ringstutzen (32) angeformt ist, der auf der vom Schleifwerkzeug (10) abgekehrten Oberseite des Werkzeughalters (22) koaxial zur Drehlagerachse (25) angeordnet ist, und daß der Innenring (26) des Schwingkörpers (23) auf den Ringstutzen (32) aufgesetzt und mit diesem fest verbunden ist, z.B. durch Schweißen oder Kleben. 5. Orbital sander according to one of claims 2-4, characterized in that an annular socket (32) is formed on the tool holder (22), which is arranged coaxially to the pivot axis (25) on the upper side of the tool holder (22) remote from the grinding tool (10) and that the inner ring (26) of the vibrating body (23) is placed on the ring socket (32) and is firmly connected to it, for example by welding or gluing.
6. Schwingschleifer nach einem der Ansprüche 2 - 5, dadurch gekennzeichnet, daß der Innenring (26) des Schwingkörperε (23) auf seiner dem Werkzeughalter (22) zugekehrten Stirnseite über den Umfang verteilt angeordnete, einstückig angeformte Positioniernocken (33) zum lagegerechten Aufsetzen des Innenrings (29) auf den Werkzeughalter (22) trägt.6. Orbital sander according to one of claims 2 - 5, characterized in that the inner ring (26) of the Schwingkörperε (23) on its face facing the tool holder (22) face arranged distributed over the circumference, integrally formed positioning cams (33) for fitting the Carries inner ring (29) on the tool holder (22).
7. Schwingschleifer nach einem der Ansprüche 2 - 6, dadurch gekennzeichnet, daß das ringförmige Formteil (28) des Schwingkörpers (23) einen N- oder M-förmigen Querschnitt aufweist und daß die beiden axial verlaufenden, konzentrischen, ringförmigen Schenkel (281,282) jeweils fest mit dem Innen- bzw. Außenring (26,27) verbunden εind.7. Orbital sander according to one of claims 2-6, characterized in that the annular shaped part (28) of the oscillating body (23) has an N- or M-shaped cross section and that the two axially extending, concentric, annular legs (281, 282) each are firmly connected to the inner or outer ring (26, 27).
8. Schwingεchleifer nach einem der Ansprüche 1 - 7, dadurch gekennzeichnet, daß daε Formteil (28) des Schwingkörpers (23) aus Gummi oder einem spritzbaren Weichkunstεtoff hergestellt ist. 8. Orbital sander according to one of claims 1-7, characterized in that the molded part (28) of the oscillating body (23) is made of rubber or a sprayable soft plastic.
EP97915266A 1996-05-02 1997-01-28 Hand-operated orbital sander Expired - Lifetime EP0836543B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19617573A DE19617573A1 (en) 1996-05-02 1996-05-02 Hand-held orbital sander
DE19617573 1996-05-02
PCT/DE1997/000145 WO1997042001A1 (en) 1996-05-02 1997-01-28 Hand-operated orbital sander

Publications (2)

Publication Number Publication Date
EP0836543A1 true EP0836543A1 (en) 1998-04-22
EP0836543B1 EP0836543B1 (en) 2001-11-14

Family

ID=7793092

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97915266A Expired - Lifetime EP0836543B1 (en) 1996-05-02 1997-01-28 Hand-operated orbital sander

Country Status (7)

Country Link
US (1) US5855504A (en)
EP (1) EP0836543B1 (en)
JP (1) JPH11508832A (en)
CN (1) CN1115231C (en)
BR (1) BR9702252A (en)
DE (2) DE19617573A1 (en)
WO (1) WO1997042001A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19632218B4 (en) * 1996-08-09 2007-08-23 Robert Bosch Gmbh sander
US6758731B2 (en) * 2001-08-10 2004-07-06 One World Technologies Limited Orbital sander
WO2004049886A2 (en) * 2002-12-03 2004-06-17 S. C. Johnson & Son, Inc. P0wered cleaner/polisher
US7565712B2 (en) * 2003-11-26 2009-07-28 S.C. Johnson & Son, Inc. Powered cleaner/polisher

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2193419A (en) * 1938-06-27 1940-03-12 Edward B George Portable surfacing machine
US3345784A (en) * 1964-12-29 1967-10-10 Rockwell Mfg Co Orbital finishing sander
DE3518984A1 (en) * 1985-05-25 1986-11-27 Festo KG, 7300 Esslingen BALANCED ORBIT SANDER
DE4233729A1 (en) * 1992-10-07 1994-04-14 Bosch Gmbh Robert Eccentric disc grinder with grinding disc brake
DE4303044A1 (en) * 1993-02-04 1994-08-11 Bosch Gmbh Robert Hand tool for surface processing
US5626510A (en) * 1993-02-04 1997-05-06 Robert Bosch Gmbh Power tool for surface treatment
US5607343A (en) * 1994-08-22 1997-03-04 Ryobi North America Sander vibration isolator

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9742001A1 *

Also Published As

Publication number Publication date
US5855504A (en) 1999-01-05
JPH11508832A (en) 1999-08-03
DE19617573A1 (en) 1997-11-06
CN1190363A (en) 1998-08-12
DE59705369D1 (en) 2001-12-20
BR9702252A (en) 1999-02-17
WO1997042001A1 (en) 1997-11-13
CN1115231C (en) 2003-07-23
EP0836543B1 (en) 2001-11-14

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