DE29908288U1 - Hand-held concrete grinder - Google Patents
Hand-held concrete grinderInfo
- Publication number
- DE29908288U1 DE29908288U1 DE29908288U DE29908288U DE29908288U1 DE 29908288 U1 DE29908288 U1 DE 29908288U1 DE 29908288 U DE29908288 U DE 29908288U DE 29908288 U DE29908288 U DE 29908288U DE 29908288 U1 DE29908288 U1 DE 29908288U1
- Authority
- DE
- Germany
- Prior art keywords
- hand
- concrete grinder
- held concrete
- motor
- held
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000605 extraction Methods 0.000 claims description 6
- 239000000428 dust Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/10—Single-purpose machines or devices
- B24B7/18—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like
- B24B7/186—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like with disc-type 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
- B24B23/024—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor driven by hands or feet
-
- 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
-
- 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
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/10—Single-purpose machines or devices
- B24B7/18—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like
- B24B7/182—Single-purpose machines or devices for grinding floorings, walls, ceilings or the like for walls and ceilings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Road Repair (AREA)
Description
Beschreibung
Handgefüihrter BetonschleiferDescription
Hand-held concrete grinder
Die Erfindung betrifft einen Betonschleifer, der als handgeführtes Werkzeug vorzugsweise im Bau- und Baunebengewerbe Anwendung findet.The invention relates to a concrete grinder which is used as a hand-held tool, preferably in the construction and related industries.
Handgeführte Betonschleifer sind in verschiedenen Ausführungen bekannt. Sie werden beim Bearbeiten von Stein-und Betonoberflächen zur Beseitigung von Unebenheiten, wie Schalungsnähten, Fugenresten und Altanstrichen, zum Kantenbrechen zur Fassadennachbearbeitung, aber auch zur Vorbereitung von zu fliesenden Flächen eingesetzt. Für diese Einsatzgebiete haben sich aufgrund der Standzeit inbesondere Schleifteller mit integrierten Diamantsegmenten bewährt.Hand-held concrete grinders are available in various designs. They are used when working on stone and concrete surfaces to remove unevenness, such as formwork seams, joint residues and old paint, to break edges for facade finishing, but also to prepare surfaces to be tiled. Grinding discs with integrated diamond segments have proven particularly useful for these applications due to their service life.
Ein Nachteil bekannter handgeführter Betonschleifer (DE -OS 195 03 201, DE-OS 38 05 991) ist die Anordnung des Motors in einer im wesentlichen zum Schleifteller parallelen Ebene aus konstruktiven Gründen. In dieser Ausführung befindet sich der Motor in einer staubbelasteten Zone und zieht über die Ansaugöffhungen Staub in das Motorengehäuse mit ein, so daß durch den damit verbundenen Schmirgeleffekt die Standzeit wichtiger Funktionsgruppen des Motors sinkt.A disadvantage of known hand-held concrete grinders (DE-OS 195 03 201, DE-OS 38 05 991) is the arrangement of the motor in a plane that is essentially parallel to the grinding disc for structural reasons. In this design, the motor is located in a dust-laden zone and draws dust into the motor housing via the intake openings, so that the associated sanding effect reduces the service life of important functional groups of the motor.
Weiterhin ist die Anordnung der Griffe bisher ergonomisch ungünstig gestaltet. Eine präzise und weitgehend ermüdungsfreie Führung des relativ schweren Betonschleifers, insbesondere an senkrechten Flächen, ist mit den vorgeschlagenen Ausführungen nicht möglich. So stellt auch der in DE 195 03 201 Al erkennbare Bügelhandgriff nur eine unzureichende Lösung dar, da der Abstand der Hände zu gering ist, um den Schleifer präzise zu führen und außerdem jede Hand in einer unterschiedlichen Ebene angreifen muß.Furthermore, the arrangement of the handles is currently not ergonomically designed. Precise and largely fatigue-free control of the relatively heavy concrete grinder, especially on vertical surfaces, is not possible with the proposed designs. The bow handle shown in DE 195 03 201 Al is also an inadequate solution, as the distance between the hands is too small to guide the grinder precisely and each hand has to grip it at a different level.
Es ist weiterhin bekannt (DE 38 05 991 Al), den Betonschleifer mit einer Absaugvorrichtung zu verbinden und den Staub über einen an einer Absaughaube angebrachten Stutzen und den mit Aussparungen versehenen Schleifteller von der zu schleifenden FlächeIt is also known (DE 38 05 991 Al) to connect the concrete grinder to an extraction device and to remove the dust from the surface to be ground via a nozzle attached to an extraction hood and the grinding disc provided with recesses
abzusaugen. Durch die den Schleifteller überkragende Absaughaube ist das Einsatzgebiet eingeschränkt, vor allem ist die Bearbeitung von Zonen, die Wänden oder Vorsprüngen vorgelagert sind, nicht möglich, so daß hinsichtlich der Bearbeitungsqualität derartiger Flächen Kompromisse eingegangen werden müssen.to extract. The area of application is limited by the extraction hood that extends over the sanding disc, and in particular it is not possible to work on areas that are in front of walls or projections, so that compromises have to be made with regard to the processing quality of such surfaces.
Aufgabe der Erfindung ist es, einen handgeführten Betonschleifer zu entwickeln, dessen Motor außerhalb der staubbelasteten Zone angeordnet ist und der präzise und weitgehend ermüdungsfrei geführt werden kann.The object of the invention is to develop a hand-held concrete grinder whose motor is located outside the dust-laden zone and which can be guided precisely and largely fatigue-free.
Erfindungsgemäß wird die Aufgabe dadurch gelöst, daß bei dem aus den Hauptgruppen Motor, Getriebe mit austretender Arbeitsspindel, einem an ihr befestigtem Schleifteller, einer Absaughaube und einer Haltevorrichtung bestehenden Betonschleifer der Motor entgegen der Richtung der Arbeitsspindel und somit über der Schleifscheibe angeordnet ist und daß zwei seitliche Handgriffe in einer zum Schleifteller parallelen Ebene angebrachtAccording to the invention, the object is achieved in that in the concrete grinder consisting of the main groups motor, gear with outgoing work spindle, a grinding disc attached to it, a suction hood and a holding device, the motor is arranged against the direction of the work spindle and thus above the grinding disc and that two side handles are attached in a plane parallel to the grinding disc
Vorteilhafterweise besitzt die Absaughaube mindestens ein abnehmbares Segment. In einer Vorzugsvariante ist für die Abnahme dieses Segmentes ein Schnellwechsel-Bügelverschluß vorgesehen.The extraction hood advantageously has at least one removable segment. In a preferred variant, a quick-change clamp closure is provided for removing this segment.
Eine weitere Ausgestaltung der Erfindung besteht darin, daß der Ein-Aus-Schalter des Betonschleifers an einem der seitlichen Griffe installiert ist.A further embodiment of the invention is that the on-off switch of the concrete grinder is installed on one of the side handles.
Die Erfindung wird im folgenden an einem Beispiel erläutert:The invention is explained below using an example:
Figur 1 zeigt die Außenansicht eines handgefuhrten Betonschleifers. Figure 1 shows the external view of a hand-held concrete grinder.
Er besteht aus den Hauptgruppen Motor 1 mit den Luft-Ansaugöffnungen 2, dem Getriebe mit der hier nicht erkennbaren, nach unten austretenden Arbeitsspindel und dem an ihr befestigtem Schleifteller, der Ansaughaube 4 und der Haltevorrichtung. Der Motor 1 ist dabei entgegen der Richtung der Arbeitsspindel oberhalb des Schleiftellers angeordnet, so daß ihm über die Luft-Ansaugöffnungen 2 staubfreie Luft zugeführt wird. Die Haltevor-It consists of the main groups motor 1 with the air intake openings 2, the gear with the work spindle (not visible here) that extends downwards and the grinding disc attached to it, the intake hood 4 and the holding device. The motor 1 is arranged above the grinding disc in the opposite direction to the work spindle so that dust-free air is supplied to it via the air intake openings 2. The holding device
richtung besteht aus zwei mit dem Motorblock verbundene Streben 5 und zwei zwischen ihnen angeordneten Handgriffen 6 und 6', die somit in einer Ebene parallel zum Schleifteller liegen. Durch die damit verbundene beidhändige parallele Führung des Betonschleifers ist ein weitgehend ermüdungsfreies Arbeiten möglich. Der am Handgriffe außen installierte Ein-/Aus-Schalter 11 ist leicht zugänglich und zugleich außerhalb der staubbelasteten Zone angeordnet.The device consists of two struts 5 connected to the engine block and two handles 6 and 6' arranged between them, which are thus in a plane parallel to the grinding disc. The two-handed parallel guidance of the concrete grinder enables largely fatigue-free work. The on/off switch 11 installed on the outside of the handle is easily accessible and at the same time located outside the dust-laden zone.
Die Absaughaube 4 mit dem Bürstenkranz 7 und dem Absaugstutzen 8 ist mit einem Schnell wechsel-Bügelverschluß 9 versehen, der es gestattet, ein Segment 10 der Absaughaube abzunehmen. Dadurch wird auch die Bearbeitung von Flächen ermöglicht, die Wänden oder anderen Vorsprüngen unmittelbar vorgelagert sind und damit das Einsatzgebiet bekannter handgeführter Betonschleifer erweitert.The suction hood 4 with the brush ring 7 and the suction nozzle 8 is provided with a quick-change clamp closure 9, which allows a segment 10 of the suction hood to be removed. This also enables the processing of surfaces that are immediately in front of walls or other projections, thus expanding the area of application of known hand-held concrete grinders.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29908288U DE29908288U1 (en) | 1999-05-08 | 1999-05-08 | Hand-held concrete grinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29908288U DE29908288U1 (en) | 1999-05-08 | 1999-05-08 | Hand-held concrete grinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE29908288U1 true DE29908288U1 (en) | 1999-07-29 |
Family
ID=8073364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE29908288U Expired - Lifetime DE29908288U1 (en) | 1999-05-08 | 1999-05-08 | Hand-held concrete grinder |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE29908288U1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE500013C (en) | 1926-11-12 | 1930-06-16 | Alex Alfred Clarke | Electric motor-driven hand tool for processing wood surfaces |
| DE9409854U1 (en) | 1994-06-17 | 1994-08-04 | Hans Sauer GmbH, 22339 Hamburg | Floor guide device for a manual machine |
| JPH06262517A (en) | 1993-03-05 | 1994-09-20 | Hitachi Koki Co Ltd | Wheel guard for portable disk grinder |
| DE29717099U1 (en) | 1997-09-23 | 1997-12-04 | Liu, Wun-Hui, Taichung | Grinder with protective cover |
-
1999
- 1999-05-08 DE DE29908288U patent/DE29908288U1/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE500013C (en) | 1926-11-12 | 1930-06-16 | Alex Alfred Clarke | Electric motor-driven hand tool for processing wood surfaces |
| JPH06262517A (en) | 1993-03-05 | 1994-09-20 | Hitachi Koki Co Ltd | Wheel guard for portable disk grinder |
| DE9409854U1 (en) | 1994-06-17 | 1994-08-04 | Hans Sauer GmbH, 22339 Hamburg | Floor guide device for a manual machine |
| DE29717099U1 (en) | 1997-09-23 | 1997-12-04 | Liu, Wun-Hui, Taichung | Grinder with protective cover |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R207 | Utility model specification |
Effective date: 19990909 |
|
| R150 | Utility model maintained after payment of first maintenance fee after three years |
Effective date: 20021014 |
|
| R151 | Utility model maintained after payment of second maintenance fee after six years |
Effective date: 20050420 |
|
| R152 | Utility model maintained after payment of third maintenance fee after eight years |
Effective date: 20070309 |
|
| R021 | Search request validly filed |
Effective date: 20071120 |
|
| R163 | Identified publications notified |
Effective date: 20080114 |
|
| R071 | Expiry of right |