EP3519140A1 - Dust hood for a grinding device - Google Patents

Dust hood for a grinding device

Info

Publication number
EP3519140A1
EP3519140A1 EP17767791.1A EP17767791A EP3519140A1 EP 3519140 A1 EP3519140 A1 EP 3519140A1 EP 17767791 A EP17767791 A EP 17767791A EP 3519140 A1 EP3519140 A1 EP 3519140A1
Authority
EP
European Patent Office
Prior art keywords
hood
dust hood
dust
adjusting ring
hood body
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
EP17767791.1A
Other languages
German (de)
French (fr)
Other versions
EP3519140B1 (en
Inventor
Thomas Blatz
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Publication of EP3519140A1 publication Critical patent/EP3519140A1/en
Application granted granted Critical
Publication of EP3519140B1 publication Critical patent/EP3519140B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
    • B24B55/102—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided with rotating 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
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • B24B23/028—Angle tools
    • 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

Definitions

  • the present invention relates to a dust hood for a equipped with a Getriebehals for attaching the dust hood grinder.
  • the dust hood is equipped with a hood body for covering a circular grinding wheel and with a curtain extending along a circumference of the hood body for at least partially sealing the hood body with respect to a substrate to be machined by means of the grinding wheel.
  • the dust hood has a suction connection, via which a background removal can be sucked out of the hood body.
  • Dust hoods of the type mentioned are basically known from the prior art. They serve to prevent the spread of dust during grinding work, inter alia to protect the health of a user of the grinder. It is known to provide the hood body with a curtain in the form of a brush ring or a lamellae curtain, so that the hood body terminates on the substrate to be processed. If the angle grinder is placed slightly obliquely on the substrate to be processed, then the curtain can seal a gap which may arise between the hood body and the substrate to be machined, whereby extraction of dust typically proceeds optimally if there is a gap of 1 between the brush ring or the slatted curtain and the substrate to 2 mm.
  • the dust hood has a collar by means of which the hood body relative, preferably in the axial direction relative to the axis of rotation of the grinding wheel, with respect to the gear neck and / or the adjusting ring can be adjusted.
  • the invention includes the recognition that a grinding wheel typically loses about 8 mm over its service life, and accordingly, for optimal extraction of dust, a height of the brush ring / slatted curtain should be adjustable.
  • the invention also includes the recognition that dust hoods known from the prior art either do not use any height adjustment or rubber lips which press the brush ring or Lammellenvorhang against the ground. Both lead to one Heavy wear on these same elements, so that the bust ring or Lammellenvorhang typically has to be changed with each grinding wheel. In addition, the suction result is not optimal when the bust ring or Lammellenvorhang rests because at the point no air can flow.
  • the dust hood according to the invention can be adapted to the actual state of a grinding wheel.
  • a dust hood is provided, which offers an improved use.
  • the curtain is designed as Lammellenvorhang.
  • the curtain may be formed as a brush ring or as a brush.
  • the adjusting ring comprises a guide neck formed on the hood body from the outside.
  • the adjusting ring may have a handle to facilitate operation of the adjusting ring.
  • the hood body has a central opening through which the gear neck can protrude.
  • a drive spindle is preferably performed, to which the circular grinding wheel is to be mounted for grinding operation.
  • an adjusting thread with a thread pitch is formed on the inside of the adjusting ring, which is in engagement with a corresponding adjusting thread, which is formed on the outside of the guide neck.
  • the engagement is preferably designed such that a rotation of the adjusting ring about the axis of rotation causes a raising or lowering of the hood body relative to the gear neck and / or the hood body relative to the adjusting ring.
  • the adjusting thread and the corresponding adjusting thread are formed as a trapezoidal thread.
  • the adjusting thread is fixedly or stationarily connected to the transmission neck, so that the adjusting ring moves together with the hood body relative to the transmission neck.
  • the dust hood on a preferably U-shaped Umgriff-piece can be designed to engage around a retaining collar formed on the adjusting collar to secure the adjusting ring on the gear neck.
  • the Umgriff-piece engages with a proper arrangement of the dust hood on the grinder, a trained on Geretehals housing collar.
  • the collar positively in the axial direction, connected to the transmission neck of the grinder.
  • the Umgriff-piece is transverse to the axis of rotation, preferably perpendicular, arranged removable from the gear neck. This facilitates disassembly of the dust hood, for example for cleaning purposes.
  • the wrap-around piece can be secured against removal from the gear neck by at least one retaining screw, preferably exactly two retaining screws.
  • the wrap-around piece can be secured by a lock against removal from the gear neck.
  • the lock may be formed for example as a spring-loaded pushbutton or as a pawl with snap hooks.
  • the lock can also be formed by rivets, pins or the like.
  • the hood body can be infinitely adjustable.
  • the hood body can be graduated adjustable.
  • a preferably spring-mounted latching plunger and / or on the gripping piece a plurality of recesses may be provided on the adjusting ring, each corresponding to a height level.
  • the hood body is adjustable by turning the adjusting ring by about 180 degrees, from an upper hood position to a lower hood position and vice versa, the upper and lower hood positions each defining a stop.
  • At least one threaded recess is provided in the thread of the adjusting thread.
  • the thread of the adjusting thread may be formed as an interrupted thread. This makes it easier to knock off unwanted dust crusts.
  • at least one core recess is provided between two adjacent threads of the corresponding adjusting thread.
  • the core recess is preferably formed as a through hole to the interior of the guide neck. This advantageously makes it possible to remove dust from the thread.
  • the dust hood on a curtain carrier with which the curtain can be fixedly connected.
  • the curtain carrier has a locking bush, which can be engaged in the hood body.
  • the locking bushing has at least one bushing slot which can extend parallel to the axis of rotation and preferably at least partially overlaps with the core recess.
  • the hood body is designed to cover a major part of the grinding wheel.
  • the dust hood may comprise a hood sector slidable in the circumferential direction of the hood body along the hood body, which sector is provided for gradually covering and releasing, as required, a remaining part of the grinding wheel. This allows a separation operation by means of the remaining part of the grinding wheel, which is not covered by the hood body.
  • the curtain is fixedly connected to the hood body.
  • the dust cover may be free of any acting between the curtain and hood body in the axial direction spring elements.
  • the object is also achieved by a grinding device with a gear neck and with a dust hood of the type described above, wherein the dust hood is arranged or to be arranged on the gear neck.
  • FIG. 1 shows a grinding device in the form of a diamond grinder on which a dust hood according to a preferred embodiment of the invention is arranged, wherein the dust hood is shown in section.
  • Fig. 2 is a perspective view of the embodiment of Fig. 1;
  • FIG. 3 front view of the embodiment of Figures 1 and 2;
  • Fig. 6 shows the dust hood of Figures 1 to 5 in the removed state, wherein the grinding device is shown only in sections.
  • Grinder is not shown.
  • Fig. 8 shows a preferred embodiment of the adjusting ring and the Umgriff-piece.
  • FIG. 1 shows a grinding device 100 in the form of a diamond grinder.
  • the grinder 200 has a gear neck 210 for attachment of a dust hood 100, which is also shown in Fig. 1.
  • the dust hood 100 is shown in section.
  • the dust hood 100 is equipped with a hood body 10 for covering a circular grinding wheel 220, in the present case a diamond wheel, and with a curtain 30 extending along a circumference U of the hood body 10 for at least partially sealing the hood body 10 with respect to a substrate UG to be machined by means of the grinding wheel 220 ,
  • the curtain 30 is designed as a slatted curtain. Via a suction connection 40 of the dust hood 100, a background removal S in the form of dust can be extracted from the hood body 10.
  • the hood body 10 in FIG. 1 is designed to cover a major part of the grinding wheel 220, wherein the dust hood 100 has a hood sector 20 which is displaceable in the circumferential direction U of the hood body 10 along the hood body 10 and which serves to gradually cover and release a remaining part 220 'as required Grinding wheel 220 is provided.
  • a curtain 30 ' is also provided in the form of a louver curtain.
  • the dust hood 100 has an adjusting ring 50 by means of which the hood body 10 can be adjusted in the axial direction A, relative to the axis of rotation R of the grinding wheel 220, with respect to the gear neck 210 and the adjusting ring 50.
  • the adjusting ring 50 is positively connected in the axial direction A with the gear neck 210 of the grinder 200. This is achieved by means of a U-shaped wraparound piece 25 (cf. also FIGS. 6 and 8), which surrounds a retaining collar 55 formed on the adjusting ring 50 for securing the adjusting ring 50 on the gear neck 210.
  • the wraparound piece 25 When shown in Fig. 1 as intended arrangement of the dust cover 100 on the grinder 200, the wraparound piece 25 also surrounds a trained on Getriebehals 210 housing collar 215th
  • the hood body 10 has a central opening 13 through which the gear neck 210 can pass or protrude. Through the gear neck 210, a drive spindle (not shown) is guided on which the circular grinding wheel 220 is mounted for grinding operation.
  • the adjusting ring 50 comprises a guide neck 15 formed on the hood body 10 from the outside.
  • an adjusting thread 57 is formed with a thread pitch G (see Fig. 7), which is in engagement with a corresponding adjusting thread 17 which is formed on the outside of the guide neck 15. It is thus achieved that a rotation of the adjusting ring 50 about the rotation axis R causes a raising or lowering of the hood body 10 relative to the gear neck 210 and the hood body 10 relative to the adjusting ring 50.
  • Fig. 2 shows a perspective view of the embodiment of Fig. 1.
  • Good zuerkennen in Fig. 2 is that the adjusting ring 50 has a handle 53 to facilitate operation of the adjusting ring 30.
  • the hood body 10 is adjustable by turning the adjusting ring 50 by about 180 degrees, from an upper hood position OP (FIG. 1 to FIG. 4) to a lower hood position UP (FIG. 5) and vice versa, the upper and lower hood positions each one Define stop.
  • an upper hood position OP of the hood body 10 is shown, which is why the grinding wheel 220, based on the axial direction A, a maximum beyond the hood body 10 protrudes.
  • FIG. 3 A front view of the embodiment of Figs. 1 and 2 is shown in Fig. 3.
  • Fig. 4 shows now the dust hood of Fig. 1 to 3 in the upper hood position OP, the grinder 200 is only partially shown. Good to see is the U-shaped Umgriff-piece 25th
  • Fig. 5 shows the dust hood of Fig. 1 to 4 in the lower hood position UP, wherein the grinder is also shown only in part. Below the adjusting ring 50 can be seen a part of the corresponding adjusting thread 17 which is formed on the outside of the guide neck 15.
  • the dust hood of Figs. 1 to 5 in the removed state is shown in Fig. 6, wherein the grinder 200 is shown only in part.
  • the wrap-around piece 25, which is designed to be vertically removable with respect to the axis of rotation R from the gear neck 210, is shown in the drawn-off state in FIG.
  • Two retaining screws 27, which are provided for securing the wraparound piece 25 against removal from the gear neck 210, are hereby solved.
  • the two retaining screws 27 may also be designed in the form of two retaining pins.
  • the two retaining screws 27 are also realized by two rivets. Good to see in Fig. 6 are formed on the collar 50 retaining collar 55 and formed on the gear neck 210 housing collar 215, which are held in mounted Umgriff piece 25 in the axial direction A positively by the Umgriff piece 25, wherein the collar 50 rotatable remains.
  • the hood body 10 has a central opening 13 through which the gear neck 210 can pass or protrude. Through the gear neck 210 a drive spindle 230 is guided, to which the circular grinding wheel (not shown) can be attached for grinding operation.
  • the circular grinding wheel (not shown) can be attached for grinding operation.
  • FIG. 7 Shown in FIG. 7 is the dust hood 100 of FIGS. 1 to 6 in a partially opened state, wherein the grinding device is not shown.
  • Fig. 7 in particular, a measure for the effective extraction of background erosion (dust) can be seen.
  • each two adjacent threads 16, 16 '; 16 ', 16 "of the corresponding adjusting thread 17 are each provided with a core recess 18, 18'
  • the core recesses 18, 18 ' are formed as through-holes to the interior of the guide neck 15. Dust can be sucked out of the corresponding adjusting thread 17 through the core recesses 18, 18' ,
  • the dust hood 100 has a curtain carrier 60 to which the curtain 30 is fixedly connected, wherein the curtain carrier 60 has a latching sleeve 65 which can be engaged in the hood body 10 or in the guide neck 15.
  • the locking bush 65 has in the presently illustrated embodiment six socket slot 67 which extend parallel to the axis of rotation R.
  • the curtain carrier 60 and the dust hood 10 can be plugged together such that one of the socket slots 67 at least partially overlaps with the core recess 18. This allows optimal dust extraction from the corresponding adjusting thread 17th
  • Fig. 8 shows a preferred embodiment of the adjusting ring 50 and the Umgriff piece 25.
  • a preferably spring-loaded latching ram 59 is provided on the adjusting ring 50.
  • a plurality of recesses 29, 29 ', 29 ", which correspond in each case to a height step, are formed on the gripping piece 25.
  • a plurality of threaded recesses 58 are provided in the thread 56 of the adjusting thread 57 Defining thread 56. This makes it easier to knock off unwanted dust crusts. LIST OF REFERENCES

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

The invention relates to a dust hood (100) for a grinding device (200) equipped with a transmission extension housing (210) for attaching the dust hood (100), the dust hood (100) comprising a hood body (10) for covering a circular grinding disk (220) and comprising a skirt (30) running around a periphery (U) of the hood body (10) for at least partially sealing the hood body (10) in relation to a surface (UG) which is to be machined by means of the grinding disk (220), and comprising a suction connection (40) via which removed surface material can be suctioned from the hood body (10). The dust hood (100) has an adjusting ring (50), by means of which the hood body (10) can be adjusted relative to the transmission extension housing (210) and/or to the adjusting ring (50), preferably in an axial direction (A) with respect to the rotational axis (R) of the grinding disk (220).

Description

„Staubhaube für ein Schleifgerät" "Dust hood for a grinder"
Die vorliegende Erfindung betrifft eine Staubhaube für ein mit einem Getriebehals zur Befestigung der Staubhaube ausgestattetem Schleifgerät. Die Staubhaube ist ausgestattet mit einem Haubenkörper zum Abdecken einer kreisförmigen Schleifscheibe und mit einem entlang eines Umfangs des Haubenkörpers verlaufenden Vorhang zum zumindest abschnittsweisen Abdichten des Haubenkörpers gegenüber eines mittels der Schleifscheibe zu bearbeitenden Untergrunds. Die Staubhaube weist einen Absauganschluss auf, über den ein Untergrundabtrag aus dem Haubenkörper abgesaugt werden kann. The present invention relates to a dust hood for a equipped with a Getriebehals for attaching the dust hood grinder. The dust hood is equipped with a hood body for covering a circular grinding wheel and with a curtain extending along a circumference of the hood body for at least partially sealing the hood body with respect to a substrate to be machined by means of the grinding wheel. The dust hood has a suction connection, via which a background removal can be sucked out of the hood body.
Staubhauben der eingangs genannten Art sind grundsätzlich aus dem Stand der Technik bekannt. Sie dienen der Vermeidung einer Staubausbreitung bei Schleifarbeiten, um unter anderem die Gesundheit eines Benutzers des Schleifgeräts zu schützen. Es ist bekannt, den Haubenkörper mit einem Vorhang in Form eines Bürstenrings oder eines Lamellenvorhang auszustatten, sodass der Haubenkörper an dem zu bearbeitenden Untergrund abschließt. Wird der Winkelschleifer leicht schräg auf den zu bearbeitenden Untergrund aufgesetzt, so kann der Vorhang einen etwaig zwischen Haubenkörper und zu bearbeitenden Untergrund entstehenden Spalt abdichten, wobei eine Absaugung von Staub typischerweise optimal verläuft wenn sich zwischen dem Büstenring bzw. Lammellenvorhang und Untergrund ein Spalt von 1 bis 2 mm einstellt.  Dust hoods of the type mentioned are basically known from the prior art. They serve to prevent the spread of dust during grinding work, inter alia to protect the health of a user of the grinder. It is known to provide the hood body with a curtain in the form of a brush ring or a lamellae curtain, so that the hood body terminates on the substrate to be processed. If the angle grinder is placed slightly obliquely on the substrate to be processed, then the curtain can seal a gap which may arise between the hood body and the substrate to be machined, whereby extraction of dust typically proceeds optimally if there is a gap of 1 between the brush ring or the slatted curtain and the substrate to 2 mm.
Es ist Aufgabe der vorliegenden Erfindung, eine Staubhaube bereitzustellen, die verbesserte Einsatzmöglichkeiten bietet.  It is an object of the present invention to provide a dust hood which offers improved possibilities of use.
Die Aufgabe wird dadurch gelöst, dass die Staubhaube einen Stellring aufweist mittels dem der Haubenkörper relativ, vorzugsweise in axialer Richtung bezogen auf die Rotationsachse der Schleifscheibe, bezüglich des Getriebehalses und/oder des Stellrings verstellt werden kann. The object is achieved in that the dust hood has a collar by means of which the hood body relative, preferably in the axial direction relative to the axis of rotation of the grinding wheel, with respect to the gear neck and / or the adjusting ring can be adjusted.
Die Erfindung schließt die Erkenntnis ein, dass sich eine Schleifscheibe über ihre Lebensdauer typischerweise um ca. 8 mm abträgt und demnach, für eine optimale Absaugung von Staub, eine Höhe des Büstenrings / Lammellenvorhangs nachstellbar sein sollte. The invention includes the recognition that a grinding wheel typically loses about 8 mm over its service life, and accordingly, for optimal extraction of dust, a height of the brush ring / slatted curtain should be adjustable.
Die Erfindung schließt ebenfalls die Erkenntnis ein, dass aus dem Stand der Technik bekannte Staubhauben entweder gar keine Höhenverstellung oder Gummilippen verwenden, die den Büstenring bzw. Lammellenvorhang gegen den Untergrund drücken. Beides führt zu einem starken Verschleiß an eben diesen Elementen, sodass der Büstenring bzw. Lammellenvorhang typischerweise mit jeder Schleifscheibe gewechselt werden muss. Zudem das Absaugergebnis nicht optimal, wenn der Büstenring bzw. Lammellenvorhang aufliegt, weil an der Stelle keine Luft nachströmen kann. The invention also includes the recognition that dust hoods known from the prior art either do not use any height adjustment or rubber lips which press the brush ring or Lammellenvorhang against the ground. Both lead to one Heavy wear on these same elements, so that the bust ring or Lammellenvorhang typically has to be changed with each grinding wheel. In addition, the suction result is not optimal when the bust ring or Lammellenvorhang rests because at the point no air can flow.
In Abkehr zu den aus dem Stand der Technik bekannten Staubhauben kann die erfindungsgemäße Staubhaube an den tatsächlichen Zustand einer Schleifscheibe angepasst werden. Somit wird eine Staubhaube bereitgestellt, die eine verbesserte Einsatzmöglichkeit bietet. In departure from the dust hoods known from the prior art, the dust hood according to the invention can be adapted to the actual state of a grinding wheel. Thus, a dust hood is provided, which offers an improved use.
In einer bevorzugten Ausgestaltung ist der Vorhang als Lammellenvorhang ausgebildet. Alternativ kann der Vorhang als Bürstenring bzw. als Bürste ausgebildet sein.  In a preferred embodiment, the curtain is designed as Lammellenvorhang. Alternatively, the curtain may be formed as a brush ring or as a brush.
Es hat sich als vorteilhaft herausgestellt, wenn der Stellring einen am Haubenkörper ausgebildeten Führungshals von außen umfasst. Der Stellring kann ein Griffstück aufweisen, um eine Bedienung des Stellrings zu erleichtern.  It has proved to be advantageous if the adjusting ring comprises a guide neck formed on the hood body from the outside. The adjusting ring may have a handle to facilitate operation of the adjusting ring.
In einer weiteren bevorzugten Ausgestaltung weist der Haubenkörper eine zentrale Öffnung auf durch die der Getriebehals hindurch ragen kann. Durch den Getriebehals ist vorzugsweise eine Antriebsspindel geführt, an der die kreisförmige Schleifscheibe zum Schleifbetrieb anzubringen ist.  In a further preferred embodiment, the hood body has a central opening through which the gear neck can protrude. Through the Getriebehals a drive spindle is preferably performed, to which the circular grinding wheel is to be mounted for grinding operation.
Besonders bevorzugt ist innenseitig am Stellring ein Stellgewinde mit einer Gewindesteigung ausgebildet, das mit einem korrespondierenden Stellgewinde, welches außenseitig am Führungshals ausgebildet ist, in Eingriff steht. Der Eingriff ist vorzugsweise derart ausgestaltet, dass ein Verdrehen des Stellrings um die Rotationsachse ein Anheben oder Absenken des Haubenkörpers relativ zum Getriebehals und/oder des Haubenkörpers relativ zum Stellring bewirkt. Vorzugsweise sind das Stellgewinde und das korrespondierenden Stellgewinde als Trapezgewinde ausgebildet.  Particularly preferably, an adjusting thread with a thread pitch is formed on the inside of the adjusting ring, which is in engagement with a corresponding adjusting thread, which is formed on the outside of the guide neck. The engagement is preferably designed such that a rotation of the adjusting ring about the axis of rotation causes a raising or lowering of the hood body relative to the gear neck and / or the hood body relative to the adjusting ring. Preferably, the adjusting thread and the corresponding adjusting thread are formed as a trapezoidal thread.
Gemäß einer alternativen Ausgestaltungsform kann es auch möglich sein, dass das Stellgewinde fest bzw. ortsfest mit dem Getriebehals verbunden ist, sodass sich der Stellring zusammen mit dem Haubenkörper relativ zu dem Getriebehals bewegt. According to an alternative embodiment, it may also be possible that the adjusting thread is fixedly or stationarily connected to the transmission neck, so that the adjusting ring moves together with the hood body relative to the transmission neck.
In einer bevorzugten Ausgestaltung weist die Staubhaube ein vorzugsweise U-förmig ausgebildetes Umgriff-Stück auf. Das Umgriff-Stück kann ausgebildet sein, um einen am Stellring ausgebildeten Haltekragen zur Sicherung des Stellrings am Getriebehals zu umgreifen. Besonders bevorzugt umgreift das Umgriff-Stück, bei bestimmungsgemäßer Anordnung der Staubhaube am Schleifgerät, einen am Getriebehals ausgebildeten Gehäusekragen. Besonders bevorzugt ist der Stellring, in axialer Richtung formschlüssig, mit dem Getriebehals des Schleifgeräts verbunden. In a preferred embodiment, the dust hood on a preferably U-shaped Umgriff-piece. The wrap-around piece can be designed to engage around a retaining collar formed on the adjusting collar to secure the adjusting ring on the gear neck. Particularly preferably, the Umgriff-piece engages with a proper arrangement of the dust hood on the grinder, a trained on Getriebehals housing collar. Especially Preferably, the collar, positively in the axial direction, connected to the transmission neck of the grinder.
Vorzugsweise ist das Umgriff-Stück bezogen auf die Rotationsachse quer, vorzugsweise senkrecht, abziehbar vom Getriebehals angeordnet. Dies erleichtert eine Demontage der Staubhaube beispielsweise zu Reinigungszwecken. Das Umgriff-Stück kann durch wenigstens eine Halteschraube, vorzugsweise genau zwei Halteschrauben, gegen ein Abziehen vom Getriebehals gesichert sein. Alternativ oder zusätzlich kann das Umgriff-Stück durch eine Verriegelung gegen ein Abziehen vom Getriebehals gesichert sein. Die Verriegelung kann beispielsweise als federbelastete Drucktaste oder als Sperrklinke mit Schnapphaken ausgebildet sein. Darüber hinaus kann die Verriegelung auch durch Niete, Stifte oder dergleichen ausgebildet sein.  Preferably, the Umgriff-piece is transverse to the axis of rotation, preferably perpendicular, arranged removable from the gear neck. This facilitates disassembly of the dust hood, for example for cleaning purposes. The wrap-around piece can be secured against removal from the gear neck by at least one retaining screw, preferably exactly two retaining screws. Alternatively or additionally, the wrap-around piece can be secured by a lock against removal from the gear neck. The lock may be formed for example as a spring-loaded pushbutton or as a pawl with snap hooks. In addition, the lock can also be formed by rivets, pins or the like.
Der Haubenkörper kann stufenlos verstellbar sein. Alternativ dazu kann der Haubenkörper abgestuft verstellbar sein. Dazu kann am Stellring ein vorzugsweise federgelagerter Raststößel und/oder am Umgriff-Stück eine Mehrzahl von Ausnehmungen vorgesehen sein, die jeweils mit einer Höhenstufe korrespondieren.  The hood body can be infinitely adjustable. Alternatively, the hood body can be graduated adjustable. For this purpose, a preferably spring-mounted latching plunger and / or on the gripping piece a plurality of recesses may be provided on the adjusting ring, each corresponding to a height level.
Es hat sich als vorteilhaft herausgestellt, wenn der Haubenkörper, durch Drehen des Stellrings um etwa 180 Grad, von einer oberen Haubenposition in eine untere Haubenposition und umgekehrt verstellbar ist, wobei die obere und untere Haubenposition jeweils einen Anschlag definieren.  It has been found to be advantageous if the hood body is adjustable by turning the adjusting ring by about 180 degrees, from an upper hood position to a lower hood position and vice versa, the upper and lower hood positions each defining a stop.
Es hat sich als besonders vorteilhaft herausgestellt, wenn im Gewindegang des Stellgewindes wenigstens eine Gewindeausnehmung vorgesehen ist. Der Gewindegang des Stellgewindes kann als unterbrochener Gewindegang ausgebildet sein. Dadurch wird ein Abschlagen von unerwünschten Staubkrusten erleichtert. Alternativ oder zusätzlich kann zwischen zwei benachbarten Gewindegängen des korrespondierenden Stellgewindes wenigstens eine Kernausnehmung vorgesehen ist. Die Kernausnehmung ist vorzugsweise als Durchgangsloch zum Inneren des Führungshalses ausgebildet. Dies ermöglicht vorteilhafterweise ein Abführen von Staub aus dem Gewinde. It has been found to be particularly advantageous if at least one threaded recess is provided in the thread of the adjusting thread. The thread of the adjusting thread may be formed as an interrupted thread. This makes it easier to knock off unwanted dust crusts. Alternatively or additionally, at least one core recess is provided between two adjacent threads of the corresponding adjusting thread. The core recess is preferably formed as a through hole to the interior of the guide neck. This advantageously makes it possible to remove dust from the thread.
Besonders bevorzugt weist die Staubhaube einen Vorhangträger auf, mit dem der Vorhang ortsfest verbunden sein kann. Es hat sich als vorteilhaft herausgestellt, wenn der Vorhangträger eine Rastbuchse aufweist, die im Haubenkörper eingerastet werden kann. Besonders bevorzugt weist die Rastbuchse wenigstens einen Buchsenschlitz auf, der sich parallel zur Rotationsachse erstrecken kann und vorzugsweise zumindest teilweise mit der Kernausnehmung überlappt. Somit wird ein Abführen von Staub aus dem Gewinde weiter verbessert. In einer besonders bevorzugten Ausgestaltung ist der Haubenkörper zum Abdecken eines überwiegenden Teils der Schleifscheibe ausgebildet. Die Staubhaube kann einen in Umfangsrichtung des Haubenkörpers entlang des Haubenkörpers verschiebbaren Haubensektor aufweisen, der zum bedarfsweisen graduellen Abdecken und Freigeben eines verbleibenden Teils der Schleifscheibe vorgesehen ist. Dies ermöglicht einen Trennbetrieb mittels des verbleibenden Teils der Schleifscheibe, der nicht vom Haubenkörper abgedeckt wird.Particularly preferably, the dust hood on a curtain carrier, with which the curtain can be fixedly connected. It has proved to be advantageous if the curtain carrier has a locking bush, which can be engaged in the hood body. Particularly preferably, the locking bushing has at least one bushing slot which can extend parallel to the axis of rotation and preferably at least partially overlaps with the core recess. Thus, a discharge of dust from the thread is further improved. In a particularly preferred embodiment, the hood body is designed to cover a major part of the grinding wheel. The dust hood may comprise a hood sector slidable in the circumferential direction of the hood body along the hood body, which sector is provided for gradually covering and releasing, as required, a remaining part of the grinding wheel. This allows a separation operation by means of the remaining part of the grinding wheel, which is not covered by the hood body.
Vorzugsweise ist der Vorhang ortsfest mit dem Haubenkörper verbunden. Die Staubhaube kann frei von etwaigen zwischen Vorhang und Haubenkörper in axialer Richtung wirkenden Federelementen sein. Preferably, the curtain is fixedly connected to the hood body. The dust cover may be free of any acting between the curtain and hood body in the axial direction spring elements.
Die Aufgabe wird ebenfalls gelöst durch ein Schleifgerät mit einem Getriebehals und mit einer Staubhaube der vorbeschriebenen Art, wobei die Staubhaube am Getriebehals angeordnet bzw. anzuordnen ist. The object is also achieved by a grinding device with a gear neck and with a dust hood of the type described above, wherein the dust hood is arranged or to be arranged on the gear neck.
Weitere Vorteile ergeben sich aus der folgenden Figurenbeschreibung. In den Figuren sind verschiedene Ausführungsbeispiele der vorliegenden Erfindung dargestellt. Die Figuren, die Beschreibung und die Ansprüche enthalten zahlreiche Merkmale in Kombination. Der Fachmann wird die Merkmale zweckmässigerweise auch einzeln betrachten und zu sinnvollen weiteren Kombinationen zusammenfassen. Further advantages will become apparent from the following description of the figures. In the figures, various embodiments of the present invention are shown. The figures, the description and the claims contain numerous features in combination. The skilled person will conveniently consider the features individually and summarize meaningful further combinations.
In den Figuren sind gleiche und gleichartige Komponenten mit gleichen Bezugszeichen beziffert. In the figures, identical and similar components are numbered with the same reference numerals.
Es zeigen: Show it:
Fig. 1 ein Schleifgerät in Form eines Diamantschleifers an dem eine Staubhaube gemäß eines bevorzugten Ausführungsbeispiels der Erfindung angeordnet ist, wobei die Staubhaube im Schnitt dargestellt ist;  1 shows a grinding device in the form of a diamond grinder on which a dust hood according to a preferred embodiment of the invention is arranged, wherein the dust hood is shown in section.
Fig. 2 eine perspektivische Darstellung des Ausführungsbeispiels der Fig. 1 ;  Fig. 2 is a perspective view of the embodiment of Fig. 1;
Fig. 3 Vorderansicht des Ausführungsbeispiels der Fig. 1 und 2;  Fig. 3 front view of the embodiment of Figures 1 and 2;
Fig. 4 die Staubhaube der Fig. 1 bis 3 in der oberen Haubenposition, wobei das  Fig. 4, the dust hood of Fig. 1 to 3 in the upper hood position, wherein the
Schleifgerät nur ausschnittsweise dargestellt ist;  Grinder is only partially shown;
Fig. 5 die Staubhaube der Fig. 1 bis 4 in der unteren Haubenposition, wobei das Fig. 5, the dust hood of Fig. 1 to 4 in the lower hood position, wherein the
Schleifgerät nur ausschnittsweise dargestellt ist;  Grinder is only partially shown;
Fig. 6 die Staubhaube der Fig. 1 bis 5 in abgenommen Zustand, wobei das Schleifgerät nur ausschnittsweise dargestellt ist;  Fig. 6 shows the dust hood of Figures 1 to 5 in the removed state, wherein the grinding device is shown only in sections.
Fig. 7 die Staubhaube der Fig. 1 bis 6 in teilweise geöffnetem Zustand, wobei das  Fig. 7, the dust hood of Fig. 1 to 6 in a partially opened state, wherein the
Schleifgerät nicht dargestellt ist; und  Grinder is not shown; and
Fig. 8 eine bevorzugte Ausgestaltung des Stellrings und des Umgriff-Stücks. Fig. 8 shows a preferred embodiment of the adjusting ring and the Umgriff-piece.
Ausführungsbeispiel: Embodiment:
Fig. 1 zeigt ein Schleifgerät 100 in Form eines Diamantschleifers. Das Schleifgerät 200 weist einen Getriebehals 210 zur Befestigung einer Staubhaube 100 auf, die ebenfalls in Fig. 1 dargestellt ist. Aus Gründen der Deutlichkeit ist die Staubhaube 100 im Schnitt dargestellt. 1 shows a grinding device 100 in the form of a diamond grinder. The grinder 200 has a gear neck 210 for attachment of a dust hood 100, which is also shown in Fig. 1. For reasons of clarity, the dust hood 100 is shown in section.
Die Staubhaube 100 ist ausgestattet mit einem Haubenkörper 10 zum Abdecken einer kreisförmigen Schleifscheibe 220, vorliegend einer Diamantscheibe, und mit einem entlang eines Umfangs U des Haubenkörpers 10 verlaufenden Vorhang 30 zum zumindest abschnittsweisen Abdichten des Haubenkörpers 10 gegenüber eines mittels der Schleifscheibe 220 zu bearbeitenden Untergrunds UG. Der Vorhang 30 ist als Lamellenvorhang ausgebildet. Über einen Absauganschluss 40 der Staubhaube 100 kann ein Untergrundabtrag S in Form von Staub aus dem Haubenkörper 10 abgesaugt werden. The dust hood 100 is equipped with a hood body 10 for covering a circular grinding wheel 220, in the present case a diamond wheel, and with a curtain 30 extending along a circumference U of the hood body 10 for at least partially sealing the hood body 10 with respect to a substrate UG to be machined by means of the grinding wheel 220 , The curtain 30 is designed as a slatted curtain. Via a suction connection 40 of the dust hood 100, a background removal S in the form of dust can be extracted from the hood body 10.
Der Haubenkörper 10 in Fig. 1 ist zum Abdecken eines überwiegenden Teils der Schleifscheibe 220 ausgebildet, wobei Staubhaube 100 einen in Umfangsrichtung U des Haubenkörpers 10 entlang des Haubenkörpers 10 verschiebbaren Haubensektor 20 aufweist, der zum bedarfsweisen graduellen Abdecken und Freigeben eines verbleibenden Teils 220' der Schleifscheibe 220 vorgesehen ist. Im Haubensektor 20 ist ebenfalls ein Vorhang 30' in Form eines Lamellenvorhangs vorgesehen. Durch Freigeben des verbleibenden Teils 220' der Schleifscheibe 220 kann auch an einer vertikalen Wand geschliffen werden.  The hood body 10 in FIG. 1 is designed to cover a major part of the grinding wheel 220, wherein the dust hood 100 has a hood sector 20 which is displaceable in the circumferential direction U of the hood body 10 along the hood body 10 and which serves to gradually cover and release a remaining part 220 'as required Grinding wheel 220 is provided. In hood sector 20, a curtain 30 'is also provided in the form of a louver curtain. By releasing the remaining part 220 'of the grinding wheel 220, it is also possible to grind on a vertical wall.
Erfindungsgemäß weist die Staubhaube 100 einen Stellring 50 auf mittels dem der Haubenkörper 10 in axialer Richtung A, bezogen auf die Rotationsachse R der Schleifscheibe 220, bezüglich des Getriebehalses 210 und des Stellrings 50 verstellt werden kann.  According to the invention, the dust hood 100 has an adjusting ring 50 by means of which the hood body 10 can be adjusted in the axial direction A, relative to the axis of rotation R of the grinding wheel 220, with respect to the gear neck 210 and the adjusting ring 50.
Der Stellring 50 ist in axialer Richtung A formschlüssig mit dem Getriebehals 210 des Schleifgeräts 200 verbunden. Dies wird erreicht durch ein U-förmig ausgebildetes Umgriff-Stück 25 (vgl. auch Fig. 6 und 8), das einen am Stellring 50 ausgebildeten Haltekragen 55 zur Sicherung des Stellrings 50 am Getriebehals 210 umgreift. Bei in Fig. 1 gezeigter bestimmungsgemäßer Anordnung der Staubhaube 100 am Schleifgerät 200 umgreift das Umgriff-Stück 25 ebenfalls einen am Getriebehals 210 ausgebildeten Gehäusekragen 215. The adjusting ring 50 is positively connected in the axial direction A with the gear neck 210 of the grinder 200. This is achieved by means of a U-shaped wraparound piece 25 (cf. also FIGS. 6 and 8), which surrounds a retaining collar 55 formed on the adjusting ring 50 for securing the adjusting ring 50 on the gear neck 210. When shown in Fig. 1 as intended arrangement of the dust cover 100 on the grinder 200, the wraparound piece 25 also surrounds a trained on Getriebehals 210 housing collar 215th
Der Haubenkörper 10 weist eine zentrale Öffnung 13 auf, durch die der Getriebehals 210 hindurch- bzw. hineinragen kann. Durch den Getriebehals 210 ist eine Antriebsspindel (nicht gezeigt) geführt, an der die kreisförmige Schleifscheibe 220 zum Schleifbetrieb angebracht ist.The hood body 10 has a central opening 13 through which the gear neck 210 can pass or protrude. Through the gear neck 210, a drive spindle (not shown) is guided on which the circular grinding wheel 220 is mounted for grinding operation.
Im Folgenden soll die Verstellbarkeit des Haubenkörpers 10 genauer erläutert werden. Wie aus Fig. 1 ersichtlich ist, umfasst der Stellring 50 einen am Haubenkörper 10 ausgebildeten Führungshals 15 von außen. In the following, the adjustability of the hood body 10 will be explained in more detail. As can be seen from FIG. 1, the adjusting ring 50 comprises a guide neck 15 formed on the hood body 10 from the outside.
Innenseitig am Stellring 50 ist ein Stellgewinde 57 mit einer Gewindesteigung G ausgebildet (vgl. Fig. 7), das mit einem korrespondierenden Stellgewinde 17, das außenseitig am Führungshals 15 ausgebildet ist, in Eingriff steht. Derart wird erreicht, dass ein Verdrehen des Stellrings 50 um die Rotationsachse R ein Anheben oder Absenken des Haubenkörpers 10 relativ zum Getriebehals 210 und des Haubenkörpers 10 relativ zum Stellring 50 bewirkt.  On the inside of the adjusting ring 50, an adjusting thread 57 is formed with a thread pitch G (see Fig. 7), which is in engagement with a corresponding adjusting thread 17 which is formed on the outside of the guide neck 15. It is thus achieved that a rotation of the adjusting ring 50 about the rotation axis R causes a raising or lowering of the hood body 10 relative to the gear neck 210 and the hood body 10 relative to the adjusting ring 50.
Fig. 2 zeigt eine perspektivische Darstellung des Ausführungsbeispiels der Fig. 1. Gut zuerkennen in Fig. 2 ist, dass der Stellring 50 ein Griffstück 53 aufweist um eine Bedienung des Stellrings 30 zu erleichtern.  Fig. 2 shows a perspective view of the embodiment of Fig. 1. Good zuerkennen in Fig. 2 is that the adjusting ring 50 has a handle 53 to facilitate operation of the adjusting ring 30.
Der Haubenkörper 10 ist durch Drehen des Stellrings 50 um etwa 180 Grad, von einer oberen Haubenposition OP (Fig. 1 bis Fig. 4) in eine untere Haubenposition UP (Fig. 5) und umgekehrt verstellbar, wobei die obere und untere Haubenposition jeweils einen Anschlag definieren. In Fig. 2 ist eine obere Haubenposition OP des Haubenkörpers 10 gezeigt, weshalb die Schleifscheibe 220, bezogen auf die axiale Richtung A, maximal über den Haubenkörper 10 hinaussteht.  The hood body 10 is adjustable by turning the adjusting ring 50 by about 180 degrees, from an upper hood position OP (FIG. 1 to FIG. 4) to a lower hood position UP (FIG. 5) and vice versa, the upper and lower hood positions each one Define stop. In Fig. 2, an upper hood position OP of the hood body 10 is shown, which is why the grinding wheel 220, based on the axial direction A, a maximum beyond the hood body 10 protrudes.
Eine Vorderansicht des Ausführungsbeispiels der Fig. 1 und 2 ist in Fig. 3 dargestellt.  A front view of the embodiment of Figs. 1 and 2 is shown in Fig. 3.
Fig. 4 zeigt nunmehr die Staubhaube der Fig. 1 bis 3 in der oberen Haubenposition OP, wobei das Schleifgerät 200 nur ausschnittsweise dargestellt ist. Gut zu erkennen ist das U-förmig ausgebildete Umgriff-Stück 25.  Fig. 4 shows now the dust hood of Fig. 1 to 3 in the upper hood position OP, the grinder 200 is only partially shown. Good to see is the U-shaped Umgriff-piece 25th
Fig. 5 zeigt die Staubhaube der Fig. 1 bis 4 in der unteren Haubenposition UP, wobei das Schleifgerät ebenfalls nur ausschnittsweise dargestellt ist. Unterhalb des Stellrings 50 zu erkennen ist ein Teil des korrespondierenden Stellgewindes 17, das außenseitig am Führungshals 15 ausgebildet ist.  Fig. 5 shows the dust hood of Fig. 1 to 4 in the lower hood position UP, wherein the grinder is also shown only in part. Below the adjusting ring 50 can be seen a part of the corresponding adjusting thread 17 which is formed on the outside of the guide neck 15.
Die Staubhaube der Fig. 1 bis 5 in abgenommen Zustand ist in Fig. 6 dargestellt, wobei das Schleifgerät 200 nur ausschnittsweise gezeigt ist. Das Umgriff-Stück 25, das bezogen auf die Rotationsachse R senkrecht abziehbar vom Getriebehals 210 ausgebildet ist, ist in Fig. 6 in abgezogenem Zustand gezeigt. Zwei Halteschrauben 27, die zum Sichern des Umgriff-Stücks 25 gegen ein Abziehen vom Getriebehals 210 vorgesehen sind, sind vorliegend gelöst. Gemäß einer alternativen Ausgestaltungsform können die zwei Halteschrauben 27 auch in Form von zwei Haltestiften ausgestaltet sein. Darüber hinaus ist es auch möglich, dass die zwei Halteschrauben 27 auch durch zwei Niete verwirklicht sind. Gut zu erkennen in Fig. 6 sind der am Stellring 50 ausgebildete Haltekragen 55 sowie der am Getriebehals 210 ausgebildete Gehäusekragen 215, die bei montiertem Umgriff-Stück 25 in axialer Richtung A formschlüssig durch das Umgriff-Stück 25 gehalten werden, wobei der Stellring 50 drehbar verbleibt. The dust hood of Figs. 1 to 5 in the removed state is shown in Fig. 6, wherein the grinder 200 is shown only in part. The wrap-around piece 25, which is designed to be vertically removable with respect to the axis of rotation R from the gear neck 210, is shown in the drawn-off state in FIG. Two retaining screws 27, which are provided for securing the wraparound piece 25 against removal from the gear neck 210, are hereby solved. According to an alternative embodiment, the two retaining screws 27 may also be designed in the form of two retaining pins. Moreover, it is also possible that the two retaining screws 27 are also realized by two rivets. Good to see in Fig. 6 are formed on the collar 50 retaining collar 55 and formed on the gear neck 210 housing collar 215, which are held in mounted Umgriff piece 25 in the axial direction A positively by the Umgriff piece 25, wherein the collar 50 rotatable remains.
Der Haubenkörper 10 weist eine zentrale Öffnung 13 auf, durch die der Getriebehals 210 hindurch- bzw. hineinragen kann. Durch den Getriebehals 210 ist eine Antriebsspindel 230 geführt, an der die kreisförmige Schleifscheibe (nicht gezeigt) zum Schleifbetrieb angebracht werden kann. Auf der oberen Innenseite des Stellrings 50 zu erkennen ist ein Teil des Stellgewindes 57, das innenseitig am Führungshals 15 ausgebildet ist. The hood body 10 has a central opening 13 through which the gear neck 210 can pass or protrude. Through the gear neck 210 a drive spindle 230 is guided, to which the circular grinding wheel (not shown) can be attached for grinding operation. To recognize on the upper inside of the adjusting ring 50 is a part of the adjusting thread 57, which is formed on the inside of the guide neck 15.
In Fig. 7 dargestellt ist die Staubhaube 100 der Fig. 1 bis 6 in teilweise geöffnetem Zustand, wobei das Schleifgerät nicht dargestellt ist. In Fig. 7 ist insbesondere eine Maßnahme zur wirksamen Absaugung von Untergrundabtrag (Staub) erkennbar. Shown in FIG. 7 is the dust hood 100 of FIGS. 1 to 6 in a partially opened state, wherein the grinding device is not shown. In Fig. 7, in particular, a measure for the effective extraction of background erosion (dust) can be seen.
So ist zwischen jeweils zwei benachbarten Gewindegängen 16, 16'; 16', 16" des korrespondierenden Stellgewindes 17 jeweils eine Kernausnehmung 18, 18' vorgesehen. Die Kernausnehmungen 18, 18' sind als Durchgangslöcher zum Inneren des Führungshalses 15 ausgebildet. Durch die Kernausnehmungen 18, 18' kann Staub aus dem korrespondierenden Stellgewinde 17 abgesaugt werden.  So is between each two adjacent threads 16, 16 '; 16 ', 16 "of the corresponding adjusting thread 17 are each provided with a core recess 18, 18' The core recesses 18, 18 'are formed as through-holes to the interior of the guide neck 15. Dust can be sucked out of the corresponding adjusting thread 17 through the core recesses 18, 18' ,
Wie der Fig. 7 unten entnommen werden kann, weist die Staubhaube 100 einen Vorhangträger 60 auf, an dem der Vorhang 30 ortsfest verbunden ist, wobei der Vorhangträger 60 eine Rastbuchse 65 aufweist die im Haubenkörper 10 bzw. im Führungshals 15 eingerastet werden kann. Die Rastbuchse 65 weist im vorliegend dargestellten Ausführungsbeispiel sechs Buchsenschlitz 67 auf, die sich parallel zur Rotationsachse R erstrecken. Der Vorhangträger 60 und die Staubhaube 10 können derart zusammengesteckt werden, dass einer der Buchsenschlitze 67 zumindest teilweise mit der Kernausnehmung 18 überlappt. Dies ermöglicht eine optimale Staubabsaugung aus dem korrespondierenden Stellgewinde 17.  As can be seen in FIG. 7 below, the dust hood 100 has a curtain carrier 60 to which the curtain 30 is fixedly connected, wherein the curtain carrier 60 has a latching sleeve 65 which can be engaged in the hood body 10 or in the guide neck 15. The locking bush 65 has in the presently illustrated embodiment six socket slot 67 which extend parallel to the axis of rotation R. The curtain carrier 60 and the dust hood 10 can be plugged together such that one of the socket slots 67 at least partially overlaps with the core recess 18. This allows optimal dust extraction from the corresponding adjusting thread 17th
Fig. 8 zeigt schließlich eine bevorzugte Ausgestaltung des Stellrings 50 und des Umgriff-Stücks 25. Zwecks abgestufter Höhenverstellbarkeit des Haubenkörpers (nicht gezeigt) ist am Stellring 50 ein vorzugsweise federgelagerter Raststößel 59 vorgesehen. Am Umgriff-Stück 25 ist eine Mehrzahl von Ausnehmungen 29, 29', 29" ausgebildet, die jeweils mit einer Höhenstufe korrespondieren. Wie ebenfalls aus Fig. 8 ersichtlich ist, sind im Gewindegang 56 des Stellgewindes 57 mehrere Gewindeausnehmungen 58 vorgesehen, die einen unterbrochenen Gewindegang 56 definieren. Dadurch wird ein Abschlagen von unerwünschten Staubkrusten erleichtert. Bezuqszeichenliste Finally, Fig. 8 shows a preferred embodiment of the adjusting ring 50 and the Umgriff piece 25. For the purpose of graded height adjustment of the hood body (not shown), a preferably spring-loaded latching ram 59 is provided on the adjusting ring 50. A plurality of recesses 29, 29 ', 29 ", which correspond in each case to a height step, are formed on the gripping piece 25. As also shown in FIG. 8, a plurality of threaded recesses 58 are provided in the thread 56 of the adjusting thread 57 Defining thread 56. This makes it easier to knock off unwanted dust crusts. LIST OF REFERENCES
10 Haubenkörper 10 hood body
13 zentrale Öffnung 13 central opening
15 Führungshals 15 guide neck
16, 16', 16" benachbarte Gewindegänge des korrespondierenden Stellgewindes16, 16 ', 16 "adjacent threads of the corresponding adjusting thread
17 korrespondierendes Stellgewinde 17 corresponding adjusting thread
18, 18' Kernausnehmung  18, 18 'core recess
20 verschiebbarer Haubensektor  20 sliding hood sector
25 Umgriff-Stück  25 wrap-around pieces
27 Halteschraube 27 retaining screw
29, 29', 29" Ausnehmungen  29, 29 ', 29 "recesses
30, 30' Vorhang  30, 30 'curtain
40 Absauganschluss  40 suction connection
50 Stellring  50 collar
53 Griffstück  53 handle
55 Haltekragen  55 retaining collar
56 Gewindegang des Stellgewindes  56 thread of the adjusting thread
57 Stellgewinde  57 adjusting thread
58 Gewindeausnehmung  58 thread recess
59 Raststößel  59 ram
60 Vorhangträger  60 curtain carriers
65 Rastbuchse  65 locking bush
67 Buchsenschlitz  67 socket slot
100 Staubhaube  100 dust hood
200 Schleifgerät  200 grinder
210 Getriebehals 215 Gehäusekragen 210 transmission neck 215 housing collar
220 Schleifscheibe  220 grinding wheel
220' verbleibender Teil der Schleifscheibe 220 'remaining part of the grinding wheel
230 Antriebsspindel 230 drive spindle
A axiale Richtung  A axial direction
G Gewindesteigung  G thread pitch
OP obere Haubenposition  OP upper hood position
R Rotationsachse  R rotation axis
S Untergrundabtrag  S background removal
U Umfang bzw. Umfangsrichtung U circumference or circumferential direction
UG Untergrund Underground underground
UP untere Haubenposition  UP lower hood position

Claims

Patentansprüche claims
Staubhaube (100) für ein mit einem Getriebehals (210) zur Befestigung der Staubhaube (100) ausgestattetem Schleifgerät (200), mit einem Haubenkörper (10) zum Abdecken einer kreisförmigen Schleifscheibe (220) und mit einem entlang eines Umfangs (U) des Haubenkörpers (10) verlaufenden Vorhang (30) zum zumindest abschnittsweisen Abdichten des Haubenkörpers (10) gegenüber eines mittels der Schleifscheibe (220) zu bearbeitenden Untergrunds (UG), und mit einem Absauganschluss (40) über den ein Untergrundabtrag (S) aus dem Haubenkörper (10) abgesaugt werden kann, A dust hood (100) for a grinder (200) equipped with a gear housing (210) for mounting the dust hood (100), with a hood body (10) for covering a circular grinding wheel (220) and along a circumference (U) of the hood body (10) running curtain (30) for at least partially sealing the hood body (10) relative to a by means of the grinding wheel (220) to be processed substrate (UG), and with a suction port (40) via a subsurface (S) from the hood body ( 10) can be sucked off,
dadurch gekennzeichnet, dass die Staubhaube (100) einen Stellring (50) aufweist mittels dem der Haubenkörper (10) relativ, vorzugsweise in axialer Richtung (A) bezogen auf die Rotationsachse (R) der Schleifscheibe (220), bezüglich des Getriebehalses (210) und/oder des Stellrings (50) verstellt werden kann. characterized in that the dust hood (100) has an adjusting ring (50) by means of which the hood body (10) relative, preferably in the axial direction (A) with respect to the axis of rotation (R) of the grinding wheel (220), with respect to the transmission neck (210) and / or the adjusting ring (50) can be adjusted.
Staubhaube (100) nach Anspruch 1 , Dust hood (100) according to claim 1,
dadurch gekennzeichnet, dass der Stellring (50) einen am Haubenkörper (10) ausgebildeten Führungshals (15) von außen umfasst. characterized in that the adjusting ring (50) comprises a cap body (10) formed on the guide neck (15) from the outside.
Staubhaube (100) nach Anspruch 2, Dust hood (100) according to claim 2,
dadurch gekennzeichnet, dass innenseitig am Stellring (50) ein Stellgewinde (57) mit einer Gewindesteigung (G) ausgebildet ist, das mit einem korrespondierenden Stellgewinde (17), das außenseitig am Führungshals (15) ausgebildet ist, in Eingriff steht, derart, dass ein Verdrehen des Stellrings (50) um die Rotationsachse (R) ein Anheben oder Absenken des Haubenkörpers (10) relativ zum Getriebehals (210) und/oder des Haubenkörpers (10) relativ zum Stellring (50) bewirkt. characterized in that on the inside of the adjusting ring (50) is an adjusting thread (57) with a pitch (G) is formed, which with a corresponding adjusting thread (17) which is externally on the guide neck (15) is engaged, such that a rotation of the adjusting ring (50) about the rotation axis (R) causes a raising or lowering of the hood body (10) relative to the gear neck (210) and / or the hood body (10) relative to the adjusting ring (50).
Staubhaube (100) nach einem der vorangehenden Ansprüche, Dust hood (100) according to one of the preceding claims,
dadurch gekennzeichnet, dass die Staubhaube (100) ein vorzugsweise u-förmig ausgebildetes Umgriff-Stück (25) aufweist, dass einen am Stellring (50) ausgebildeten Haltekragen (55) zur Sicherung des Stellrings (50) am Getriebehals (210) umgreift, wobei das Umgriff-Stück (25), bei bestimmungsgemäßer Anordnung der Staubhaube (100) am Schleifgerät (200), ebenfalls einen am Getriebehals (210) ausgebildeten Gehäusekragen (215) umgreift. characterized in that the dust hood (100) has a preferably U-shaped Umgriff-piece (25) that surrounds a collar (50) formed retaining collar (55) for securing the adjusting ring (50) on the transmission neck (210), wherein the wraparound piece (25), when the dust hood (100) is disposed on the grinding device (200) as intended, likewise encompasses a housing collar (215) formed on the gear neck (210).
Staubhaube (100) nach Anspruch 5, Dust hood (100) according to claim 5,
dadurch gekennzeichnet, dass das Umgriff-Stück (25) bezogen auf die Rotationsachse (R) quer, vorzugsweise senkrecht, abziehbar vom Getriebehals (210) angeordnet ist. characterized in that the Umgriff-piece (25) with respect to the axis of rotation (R) transversely, preferably vertically, removable from the gear neck (210) is arranged.
Staubhaube (100) nach Anspruch 5, Dust hood (100) according to claim 5,
dadurch gekennzeichnet, dass das Umgriff-Stück (25) durch wenigstens eine Halteschraube (27) und/oder eine Verriegelung gegen ein Abziehen vom Getriebehals (210) gesichert ist. characterized in that the wraparound piece (25) is secured by at least one retaining screw (27) and / or locking against removal from the gear neck (210).
Staubhaube (100) nach einem der vorangehenden Ansprüche, Dust hood (100) according to one of the preceding claims,
dadurch gekennzeichnet, dass der Haubenkörper (10) stufenlos verstellbar ist. characterized in that the hood body (10) is infinitely adjustable.
Staubhaube (100) nach einem der Ansprüche 1 bis 6, Dust hood (100) according to one of claims 1 to 6,
dadurch gekennzeichnet, dass der Haubenkörper (10) abgestuft verstellbar ist, wobei dazu am Stellring (50) ein vorzugsweise federgelagerter Raststößel (59) und am Umgriff- Stück (25) eine Mehrzahl von Ausnehmungen (29, 29', 29"), die jeweils mit einer Höhenstufe korrespondieren, vorgesehen ist. characterized in that the hood body (10) is stepped adjustable, wherein on the adjusting ring (50) has a preferably spring-loaded latching plunger (59) and the Umgriff- piece (25) has a plurality of recesses (29, 29 ', 29 "), the each corresponding to a height level, is provided.
Staubhaube (100) nach einem der vorangehenden Ansprüche, Dust hood (100) according to one of the preceding claims,
dadurch gekennzeichnet, dass der Haubenkörper (10), durch Drehen des Stellrings (50) um etwa 180 Grad, von einer oberen Haubenposition (OP) in eine untere Haubenposition (UP) und umgekehrt verstellbar ist, wobei die obere und untere Haubenposition (UP; OP) jeweils einen Anschlag definieren. characterized in that the hood body (10) is adjustable by turning the adjusting ring (50) about 180 degrees from an upper hood position (OP) to a lower hood position (UP) and vice versa, the upper and lower hood positions (UP; OP) define one stop each.
Staubhaube (100) nach Anspruch 1 oder 2, Dust hood (100) according to claim 1 or 2,
dadurch gekennzeichnet, dass der Stellring (50), in axialer Richtung (A) formschlüssig, mit dem Getriebehals (210) des Schleifgeräts (200) verbunden ist. characterized in that the adjusting ring (50), in the axial direction (A) positively, with the gear neck (210) of the grinder (200) is connected.
Staubhaube (100) nach einem der Ansprüche 3 bis 10, Dust hood (100) according to one of claims 3 to 10,
dadurch gekennzeichnet, dass im Gewindegang (56) des Stellgewindes (57) wenigstens eine Gewindeausnehmung (58) vorgesehen ist und/oder zwischen zwei benachbarten Gewindegängen (16, 16') des korrespondierenden Stellgewindes (17) wenigstens eine Kernausnehmung (18) vorgesehen ist. characterized in that in the thread (56) of the adjusting thread (57) at least one threaded recess (58) is provided and / or between two adjacent threads (16, 16 ') of the corresponding adjusting thread (17) at least one core recess (18) is provided.
12. Staubhaube (100) nach einem der vorangehenden Ansprüche, 12. Dust hood (100) according to one of the preceding claims,
dadurch gekennzeichnet, dass die Staubhaube (100) einen Vorhangträger (60) aufweist, an dem der Vorhang (30) ortsfest verbunden ist, wobei der Vorhangträger (60) eine Rastbuchse (65) aufweist die im Haubenkörper (10) eingerastet werden kann.  characterized in that the dust hood (100) has a curtain carrier (60) to which the curtain (30) is fixedly connected, wherein the curtain carrier (60) has a locking bush (65) which can be engaged in the hood body (10).
13. Staubhaube (100) nach Anspruch 1 1 und 12, 13. dust hood (100) according to claim 1 1 and 12,
dadurch gekennzeichnet, dass die Rastbuchse (65) wenigstens einen Buchsenschlitz (67) aufweist, der sich parallel zur Rotationsachse (R) erstreckt und zumindest teilweise mit der Kernausnehmung (18) überlappt.  characterized in that the locking bushing (65) has at least one bushing slot (67) which extends parallel to the axis of rotation (R) and at least partially overlaps with the core recess (18).
14. Staubhaube (100) nach einem der vorangehenden Ansprüche, 14. Dust hood (100) according to one of the preceding claims,
dadurch gekennzeichnet, dass der Haubenkörper (10) zum Abdecken eines überwiegenden Teils der Schleifscheibe (200) ausgebildet ist und die Staubhaube (100) einen in Umfangsrichtung (U) des Haubenkörpers (10) entlang des Haubenkörpers (10) verschiebbaren Haubensektor (20) aufweist, der zum bedarfsweisen graduellen Abdecken und Freigeben eines verbleibenden Teils der Schleifscheibe (220) vorgesehen ist, und wobei im Haubensektor (20) ebenfalls ein Vorhang (30') vorgesehen ist.  characterized in that the hood body (10) for covering a major part of the grinding wheel (200) is formed and the dust hood (100) in the circumferential direction (U) of the hood body (10) along the hood body (10) slidably hood sector (20) which is provided for gradually covering and releasing, as required, a remaining portion of the grinding wheel (220), and wherein a hood (30 ') is also provided in the hood sector (20).
15. Staubhaube (100) nach einem der vorangehenden Ansprüche, 15. dust hood (100) according to any one of the preceding claims,
dadurch gekennzeichnet, dass der Vorhang (20) ortsfest mit dem Haubenkörper (10) verbunden ist und die Staubhaube (100) frei von etwaigen zwischen Vorhang (20) und Haubenkörper (10) in axialer Richtung (A) wirkender Federelementen ist.  characterized in that the curtain (20) is fixedly connected to the hood body (10) and the dust hood (100) is free of any between curtain (20) and hood body (10) in the axial direction (A) acting spring elements.
16. Schleifgerät (200) mit einem Getriebehals (210) und mit einer Staubhaube (100) nach einen der vorangehenden Ansprüche, wobei die Staubhaube (100) am Getriebehals (210) angeordnet bzw. anzuordnen ist. 16. Grinder (200) with a gear neck (210) and with a dust cover (100) according to one of the preceding claims, wherein the dust hood (100) on the gear neck (210) is arranged or to be arranged.
EP17767791.1A 2016-09-28 2017-09-11 Dust hood for a grinding maschine Active EP3519140B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP16191042.7A EP3300839A1 (en) 2016-09-28 2016-09-28 Dust hood for a grinding machine
PCT/EP2017/072689 WO2018059915A1 (en) 2016-09-28 2017-09-11 Dust hood for a grinding device

Publications (2)

Publication Number Publication Date
EP3519140A1 true EP3519140A1 (en) 2019-08-07
EP3519140B1 EP3519140B1 (en) 2023-07-26

Family

ID=57018055

Family Applications (2)

Application Number Title Priority Date Filing Date
EP16191042.7A Withdrawn EP3300839A1 (en) 2016-09-28 2016-09-28 Dust hood for a grinding machine
EP17767791.1A Active EP3519140B1 (en) 2016-09-28 2017-09-11 Dust hood for a grinding maschine

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP16191042.7A Withdrawn EP3300839A1 (en) 2016-09-28 2016-09-28 Dust hood for a grinding machine

Country Status (4)

Country Link
US (1) US20190240807A1 (en)
EP (2) EP3300839A1 (en)
CN (1) CN109689306B (en)
WO (1) WO2018059915A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017213746A1 (en) * 2017-08-08 2019-02-14 Robert Bosch Gmbh Protective device for a hand tool machine
DE202019105847U1 (en) 2019-10-21 2021-01-22 C. & E. Fein Gmbh Suction device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10028128A1 (en) * 2000-06-07 2001-12-13 Bosch Gmbh Robert Hand tool, in particular concrete grinder
KR100382944B1 (en) * 2000-12-29 2003-05-12 박치성 cover for vacuum type surface grinding apparatus
DE102006041671B4 (en) * 2006-09-06 2018-03-29 Robert Bosch Gmbh Protective hood of a hand tool machine
DE102006053305A1 (en) * 2006-11-13 2008-05-15 Robert Bosch Gmbh Hand tool with protective hood, in particular angle grinder
US7625265B2 (en) * 2007-01-12 2009-12-01 I.T., Inc. Hood plates for handheld grinding tools
EP2186600B1 (en) * 2008-11-12 2011-11-02 Collomix Rühr-und Mischgeräte GmbH Surface grinder, especially concrete grinder
DE102012001925A1 (en) * 2012-02-02 2013-08-08 Schleif- und Fräswerkzeuge Höhn Ltd. & Co. KG Surface grinder i.e. hand-held angle grinder, for performing concrete grinding works, has suction hood whose inner side is divided into inner and outer portions, where abrasive dust and sharpening object are sucked-off over outer portion
DE202014007856U1 (en) * 2014-10-01 2014-11-13 Elektrowerkzeuge Gmbh Eibenstock Device for removing surface coatings

Also Published As

Publication number Publication date
CN109689306B (en) 2022-05-13
CN109689306A (en) 2019-04-26
US20190240807A1 (en) 2019-08-08
WO2018059915A1 (en) 2018-04-05
EP3519140B1 (en) 2023-07-26
EP3300839A1 (en) 2018-04-04

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