EP3023196B1 - Angle grinder with an elongation section - Google Patents
Angle grinder with an elongation section Download PDFInfo
- Publication number
- EP3023196B1 EP3023196B1 EP15186373.5A EP15186373A EP3023196B1 EP 3023196 B1 EP3023196 B1 EP 3023196B1 EP 15186373 A EP15186373 A EP 15186373A EP 3023196 B1 EP3023196 B1 EP 3023196B1
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- EP
- European Patent Office
- Prior art keywords
- angle grinder
- housing
- tool
- grinder according
- auxiliary handle
- 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.)
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- 230000005540 biological transmission Effects 0.000 claims description 18
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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Classifications
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- 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
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- 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
- B25F5/025—Construction of casings, bodies or handles with torque reaction bars for rotary tools
- B25F5/026—Construction of casings, bodies or handles with torque reaction bars for rotary tools in the form of an auxiliary handle
Definitions
- the present invention relates to an angle grinder according to the preamble of claim 1 with an elongated tool housing having a radially limited from an outer circumference motor housing portion and an extension portion, which together form a housing longitudinal axis, wherein in the region of the extension portion a tool holder is arranged with a contact surface is provided for the flat contact of an exchangeable grinding wheel.
- an angle grinder with a motor housing portion and an extension portion is known, e.g. is designed as a fillet weld grinder.
- the extension section is connected to the motor housing section via a bevel gear arranged in the motor housing section and is preferably flanged thereto.
- a tool holder with a replaceable grinding wheel is arranged at a free axial end of the extension portion.
- a disadvantage of this prior art is that the connected via the bevel gear with the motor housing section extension section with the tool holder arranged thereon leads to a comparatively large height of the angle grinder or a comparatively large distance between the tool holder remote from the top of the motor housing portion and the grinding wheel.
- a comparatively large height of the angle grinder an associated depth of cut and thus a corresponding Eckdorfkeit the angle grinder, ie its suitability for grinding in corners and edges, limited.
- DE 203 01 372 U1 discloses an angle grinder according to the preamble of claim 1.
- the object of the invention is therefore to provide a new angle grinder with an extension portion, in which an improved cornering capability is made possible.
- an angle grinder comprising an elongate tool housing having a radially limited from an outer circumference motor housing portion and an extension portion, which together form a housing longitudinal axis, wherein in the region of the extension portion a tool holder is arranged, which with a Contact surface is provided for the surface contact of a replaceable grinding wheel. Between the contact surface and the housing longitudinal axis, a distance is formed which is smaller than or equal to a maximum radius formed by the housing longitudinal axis to the outer circumference of the motor housing portion, wherein a transmission unit is provided, which is designed in the manner of a belt drive.
- the invention thus makes it possible to provide an angle grinder with an extension section, in which an improved cornering capability is achieved by a reduced distance between the contact surface of the grinding wheel and the housing longitudinal axis.
- the distance is less than or equal to 50 mm.
- a drive motor for driving the tool holder is preferably arranged, wherein the drive motor is connected via an angle gear with an intermediate shaft and the transmission unit with the tool holder, and wherein the angle gear with the intermediate shaft and the transmission unit are arranged in the extension portion.
- an angle grinder can be provided which is comparatively lightweight, since the angle gear and the transmission unit are arranged in a common housing or the extension portion.
- the transmission unit is designed in the manner of a belt drive.
- a functional and reliable transmission unit can be provided, via which the spaced apart from the drive motor tool holder can be driven.
- the belt transmission has a first and second pulley, wherein the first pulley is disposed on the intermediate shaft and the second pulley is disposed on an output shaft associated with the tool holder.
- a rotational movement of the drive motor can be transmitted in a simple manner to the intermediate shaft and this can drive the tool holder via a belt.
- the first pulley drives the second pulley via a toothed belt.
- a belt for the belt transmission can be provided, in which due to a non-existent slip, a higher efficiency can be made possible.
- the toothed belt preferably has a width of 8 to 16 mm.
- a lightweight toothed belt can be provided with a small space requirement.
- the first belt pulley is preferably arranged on a side of the intermediate shaft facing a drive toothing of the angle transmission.
- the second pulley on a recess for at least partially receiving a bearing element for rotatably supporting the output shaft.
- the bearing element has a diameter which is less than or equal to 20 mm.
- a bearing element can be provided that can be arranged in the second pulley.
- the bearing element projects beyond the second pulley in a direction away from the contact surface by a distance which is less than or equal to 2 mm.
- a height is formed between the contact surface and an upper side of the extension section facing away from the tool holder, and the extension section forms a diameter in the region of the tool holder, wherein the height to the diameter forms a ratio of 1 / 1.1 to 1 / 1.6.
- an extension section with a comparatively low height can be provided.
- a length is preferably formed which is smaller than or equal to the maximum radius.
- the Eckdorfkeit and the depth of cut of the angle grinder can be further improved or increased in a simple manner.
- At least one grip shell is preferably arranged, in particular a plastic grip shell.
- the at least one grip shell has an outer circumference which is at most 15% larger than the outer circumference of the motor housing section.
- the tool housing for arranging an additional handle on a threaded bushing.
- an additional handle can be securely and easily attached to the tool housing.
- the threaded bushing is preferably arranged in the region of the extension section.
- a toothing which is formed coaxially with the threaded bush, is preferably arranged on the tool housing for the adjustable arrangement of the auxiliary handle.
- a respective working position of the auxiliary handle can be individually adjusted and locked.
- the auxiliary handle is associated with an end stop, which is arranged on the tool housing, on the handle shell and / or on the auxiliary handle.
- the auxiliary handle can be locked only in predetermined working positions, so that e.g. Working positions of the auxiliary handle near the grinding wheel, in which a risk of injury is comparatively high, can be avoided.
- an additional handle for an angle grinder with a tool housing which is provided with a threaded bushing for the arrangement of the auxiliary handle, wherein coaxially with the threaded bushing is formed around these a first toothing.
- the auxiliary handle has an adjusting element with a second toothing for arrangement on the threaded bush, wherein the first and second toothing are designed to form a positive connection.
- an angle grinder with a tool housing on which a threaded bushing for arranging an additional handle is arranged, wherein coaxial with the threaded bushing a toothing for adjustable arrangement of the auxiliary handle is formed on the tool housing.
- the invention thus enables the provision of an angle grinder, which can be used with the additional handle which can be locked in predetermined working positions.
- the toothing is preferably designed in the form of a ring segment in order to allow only an adjustment of the auxiliary handle in a predetermined area.
- the auxiliary handle is associated with an end stop, which is arranged on the tool housing.
- the input mentioned object is also achieved by a tool system with an angle grinder and with an additional handle, the angle grinder having a tool housing, on which a threaded bushing for arranging the auxiliary handle is arranged, wherein coaxial with the threaded bush a first toothing for the adjustable arrangement of the auxiliary handle on the tool housing is formed, and wherein the auxiliary handle has an adjusting element with a second toothing for arrangement on the threaded bush, wherein the first and second toothing are formed to form a positive connection.
- Fig. 1 11 shows an angle grinder 100 with an elongate tool housing 110, which has a motor housing section 120 bounded in the radial direction by an outer circumference 125 and an extension section 130.
- the angle grinder 100 is designed as a fillet weld grinder or corner grinder.
- a drive motor (410 in Fig. 4 ) arranged to drive a tool holder 150.
- the drive motor (410 in Fig. 4 ) is preferably designed as an electronically commutated electric motor and, for example via a manual switch 112, or a manual pushbutton, by a user operable, ie at least on and off.
- the angle grinder 100 has a rating of greater than or equal to 705 watts.
- the angle grinder 100 is formed by way of example with a power cable 105 for the network-dependent power supply, which is illustratively arranged on the motor housing section 120.
- the angle grinder 100 may also be provided for battery-independent power supply with a battery pack.
- the tool holder 150 is preferably arranged in the region of the extension section 130 and designed to drive a replaceable grinding wheel 160.
- the tool holder 150 has an output shaft 157 with a contact surface 155 for surface contact of the exchangeable grinding wheel 160, which preferably has a pulley diameter of greater than or equal to 124 mm.
- a protective cover 170 is preferably assigned to protect against, for example, abrasive particles 160 produced during processing with the angle grinder 100. This is preferably designed such that the output shaft 157 in the direction of its free end (547 in Fig. 5 ) is not exceeded.
- At least one grip shell 140 is arranged, which is preferably designed as a plastic grip shell.
- the at least one grip shell 140 has an ergonomic handle shape and is provided with an outer circumference 145, which is at most 15% larger than the outer circumference 125 of the motor housing section 120, but can also be at least approximately equal.
- the extension portion 130 and the handle shell 140 are illustratively formed in one piece, but could also be formed in several pieces.
- Fig. 2 shows the extension section 130 of FIG Fig. 1 , which together with the motor housing section 120 of Fig. 1 forms a common housing longitudinal axis 202.
- lines 215, 217 extending from the outer circumference 125 of the motor housing section 120 and extended parallel in the direction of the tool receptacle 150 illustratively form an area 219.
- the extension section 130 with the tool holder 150 is arranged in this region 219.
- a distance A is formed between the housing longitudinal axis 202 and the contact surface 155 of the output shaft 157, which is less than or equal to one of the housing longitudinal axis 202 to the outer periphery 125 of the motor housing portion 120 formed maximum radius R.
- this maximum radius R has a value of 40 mm, but other values can also be realized.
- the motor housing portion 120 forms a height, which is illustratively formed between the line 215 and the line 217 and twice as large as the maximum radius R, ie 80 mm. This height of the motor housing section 120 preferably forms a total height of the angle grinder 100.
- the distance A may have a positive or negative value, with a distance A having a positive value in Fig. 2 is formed above the housing longitudinal axis 202 and a distance A with a negative value in Fig. 2 as shown below the housing longitudinal axis 202 is formed.
- the distance A is less than or equal to 50 mm and is preferably in a range between -25 mm and +10 mm, preferably in a range between -12 mm and -5 mm.
- a height h is formed, which is preferably less than or equal to 33 mm.
- Fig. 3 shows the extension portion 130 with the tool holder 150 of Fig. 2 which illustratively has a maximum diameter D, which is preferably less than or equal to 44 mm.
- the height h of the extension portion 130 of FIG Fig. 2 to this maximum diameter D a ratio in the range of 1 / 1.1 to 1 / 1.6, preferably a ratio of 1 / 1.333.
- a slim shape of the extension portion 130 and a low height of the angle grinder 100 of Fig. 1 be enabled, which in turn allows a relatively large depth of cut.
- Fig. 4 shows the angle grinder 100 of Fig. 1 with its elongated tool housing 110, here without the extension portion 130 of Fig. 1 is shown to allow an illustration of an internal structure of an extension of the angle grinder 100 according to the invention.
- a drive motor 410 with a drive shaft 415 for driving the tool holder 150 is arranged in the motor housing section 120 of the tool housing 110.
- the drive motor 410 or its drive shaft 415 is connected to an angle gear 420, which drives a transmission unit 430, which is connected to the tool holder 150.
- the angle gear 420 has an intermediate shaft 425 and is arranged with the transmission unit 430 in the extension section 130, not shown.
- the transmission unit 430 is in the manner of a belt drive.
- the transfer unit 430 is formed with a first and second pulley 432, 434.
- the first pulley 432 is illustratively disposed on the intermediate shaft 425 and the second pulley 434 is illustratively arranged on the output shaft 157 of the tool holder 150.
- the first and second pulley 432, 434 are preferably pressed onto the intermediate shaft or the output shaft 157.
- the first pulley 432 drives the second pulley 434 via a belt 436, preferably designed as a toothed belt.
- the belt 436 may also be belted in the manner of any other belt, e.g. a poly-V belt, or be designed in the manner of a chain.
- the transmission unit 430 can also be designed in any other way, e.g. in the manner of a flexible transmission element.
- Fig. 5 shows the transmission unit 430 of Fig. 4 used in the operation of angle grinder 100 of Fig. 4 via the angular gear 420 of Fig. 4 from the drive shaft 415 of the drive motor 410 of Fig. 4 is driven.
- the angle gear 420 preferably has a bevel gear 520 that can be driven by the drive shaft 415 and a ring gear 525, wherein the ring gear 525 can be driven by the bevel gear 520 via a drive toothing 527.
- the ring gear 525 is disposed at a first axial end 512 of the intermediate shaft 425 and the drive teeth 527 is formed in a direction away from the first axial end 512 direction.
- the ring gear 525 is rotatable about a bearing member 516 in the extension portion 130 of the tool housing 110 of Fig. 1
- the intermediate shaft 425 is supported by a bearing element 518.
- the second axial end 514 of the intermediate shaft 425, which is opposite the first axial end 512, or the intermediate shaft 425 facing the drive teeth 527, preferably has the first belt wheel 432 arranged thereon.
- the second pulley 434 is as in Fig. 4 arranged on the output shaft 157, wherein at a first axial end 542 of the output shaft 157, the tool holder 150 of Fig. 1 is formed, on which the grinding wheel 160 is arranged, and wherein at a first axial end 542 arranged opposite, the second axial end 544, the second Pulley 434 is arranged.
- the output shaft 157 is at least one and illustratively a first and a second bearing member 546, 548 for rotatably supporting the extension portion 130 of Fig. 1 assigned.
- the first bearing member 546 is disposed between the grinding wheel 160 and the second pulley 434, and the second bearing member 548 is disposed at the second axial end 544.
- at least the second bearing element 548 has a diameter d which is less than or equal to 20 mm and particularly preferably in the range between 16 and 20 mm.
- at least the second bearing element 548 is preferably designed in the manner of a roller bearing.
- the second belt wheel 434 has a recess 562 for at least partially receiving the second bearing element 548. It preferably towers above a - in Fig. 5
- the bearing element 548 projects beyond the second pulley 434 in a direction away from the contact surface 155 direction or in the direction of the second axial end 544 of the output shaft 157.
- the bearing element 548 projects beyond the second pulley 434 at most by a distance C, which is preferably less than or equal to 2 mm.
- a length X is formed between the housing longitudinal axis 202 and the first axial end 542 of the output shaft 157. According to one embodiment, this length X is less than or equal to the maximum radius R of Fig. 2 ,
- FIG. 5 shows a tooling system 690 illustratively including the angle grinder 100 of FIG Fig. 1 with its tool housing 110 and an additional handle 630, which can preferably be arranged on the tool housing 110 via an adjusting element 620 and is fastened illustratively on the tool housing 110.
- the auxiliary handle 630 can be fastened to the extension section 130 of the tool housing 110, but can alternatively also be fastened to its motor housing section 120, in particular in the case where the angle grinder 100 is formed without the extension section 130.
- the auxiliary handle 630 can not only be arranged on the adjusting element 620 on the tool housing 110, but also directly, i. without the adjustment 620 can be attached to the tool housing 110.
- the auxiliary handle 630 can preferably be fastened to the tool housing 110 via a screw connection and / or a clamping connection.
- the screw connection preferably has a screw with a star grip.
- Fig. 7 shows an enlarged view of the tool housing 110 of Fig. 1 or. Fig. 6 , which preferably has a threaded bushing 710 for the arrangement of the auxiliary handle 630 via a screw connection.
- this threaded bushing 710 is formed in the manner of a fferauges.
- the threaded bushing 710 is arranged in the region of the extension section 130 or incorporated therein and preferably integrally formed therewith, but alternatively may also be arranged on the motor housing section 120.
- a toothing 720 formed coaxially with the threaded bushing 710 is provided.
- the arrangement of the threaded bushing 710 with the toothing 720 merely by way of example on the in Fig. 7 shown side of the tool housing 110 is arranged and is not limited to this. Rather, the threaded bushing 710 with the toothing 720 can also be arranged on the opposite side of the tool housing 110 and / or at least in one position therebetween.
- the toothing 720 is formed ring-segment-shaped, so that only an adjustment of the auxiliary handle 630 in a predetermined angular range is made possible.
- the auxiliary handle 630 at least one end stop 731, 733; 721, 723 (841, 843 in Fig. 8 ), which is arranged on the tool housing 110, on the handle shell 140 and / or on the auxiliary handle 630.
- a first and second end stop 731, 733 are arranged on the tool housing 110, wherein the first end stop 731 is arranged at a first end 725 of the toothing 720 and the second end stop 733 is arranged at a second end 727 opposite the first end 725.
- a third and fourth end stop 721, 723 are preferably arranged on the grip shell 140, wherein the third end stop 721 is formed on a first end of a recess 740 provided in the grip shell 140 and the fourth end stop 723 is formed on a second end opposite the first end End of the recess 740 is formed.
- the recess 740 is preferably formed in the region of the threaded bushing 710 such that the toothing 720 is surrounded by the recess 740.
- the first and third end stops 731, 721 are preferably formed on the first end 725 of the toothing 720 and the second and fourth end stops 733, 723 are formed on the second end 727 of the toothing 720.
- Fig. 8 shows the adjusting element 620 of the auxiliary handle 630 of Fig. 6 with a first and second axial end 802, 804, between which preferably an elongated base body 810 is formed.
- the adjusting element 620 has at its first and second axial ends 802, 804 in each case a recess 820, 830.
- the recess 820 is designed to be arranged on the additional handle 630, and the recess 830 is intended to be arranged on the tool housing 110 of the angle grinder 100 of FIG Fig. 6 educated.
- a ring-segment-shaped toothing 840 is arranged.
- the toothing 840 preferably has an end stop 841, 843 at its first and second ends 845, 847, wherein the end stop 841 is arranged at the first end 845 and the end stop 843 is arranged at the second end 847.
- the teeth 720 formed coaxially around the threaded bushing 710 form Fig. 7 and the teeth 840 formed coaxially around the recess 830 form a positive connection.
- Fig. 9 shows the auxiliary handle 630 of Fig. 6 in a first end position, in which this at the end stop 723, 733 of Fig. 7 is applied.
- the auxiliary handle 630 is arranged in a front position or in the region of the tool holder 150.
- Fig. 10 shows the auxiliary handle 630 of Fig. 6 in a second end position, in which this at the end stop 721, 731 of Fig. 7 is applied.
- the auxiliary handle 630 is in a rear position or in the region of the motor housing section 120 of FIG Fig. 6 arranged.
- the auxiliary handle 630 not only in the in Fig. 9 shown, front end position and the in Fig. 10 shown rear end position can be arranged, but can also be arranged or locked in at least one and preferably a plurality of further intermediate positions.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Description
Die vorliegende Erfindung betrifft einen Winkelschleifer gemäß dem Oberbegriff des Anspruchs 1 mit einem länglichen Werkzeuggehäuse, das einen in radialer Richtung von einem Außenumfang begrenzten Motorgehäuseabschnitt und einen Verlängerungsabschnitt aufweist, die zusammen eine Gehäuselängsachse ausbilden, wobei im Bereich des Verlängerungsabschnitts eine Werkzeugaufnahme angeordnet ist, die mit einer Anlagefläche zur flächigen Anlage einer austauschbaren Schleifscheibe versehen ist.The present invention relates to an angle grinder according to the preamble of claim 1 with an elongated tool housing having a radially limited from an outer circumference motor housing portion and an extension portion, which together form a housing longitudinal axis, wherein in the region of the extension portion a tool holder is arranged with a contact surface is provided for the flat contact of an exchangeable grinding wheel.
Aus dem Stand der Technik ist ein derartiger Winkelschleifer mit einem Motorgehäuseabschnitt und einem Verlängerungsabschnitt bekannt, der z.B. als Kehlnahtschleifer ausgebildet ist. Der Verlängerungsabschnitt ist bei diesem Kehlnahtschleifer über ein im Motorgehäuseabschnitt angeordnetes Winkelgetriebe mit dem Motorgehäuseabschnitt verbunden und vorzugsweise an diesem angeflanscht. An einem freien axialen Ende des Verlängerungsabschnitts ist eine Werkzeugaufnahme mit einer austauschbaren Schleifscheibe angeordnet.From the prior art, such an angle grinder with a motor housing portion and an extension portion is known, e.g. is designed as a fillet weld grinder. In the case of this fillet weld grinder, the extension section is connected to the motor housing section via a bevel gear arranged in the motor housing section and is preferably flanged thereto. At a free axial end of the extension portion, a tool holder with a replaceable grinding wheel is arranged.
Nachteilig an diesem Stand der Technik ist, dass der über das Winkelgetriebe mit dem Motorgehäuseabschnitt verbundene Verlängerungsabschnitt mit der daran angeordneten Werkzeugaufnahme zu einer vergleichsweise großen Bauhöhe des Winkelschleifers bzw. einem vergleichsweise großen Abstand zwischen einer der Werkzeugaufnahme abgewandten Oberseite des Motorgehäuseabschnitts und der Schleifscheibe führt. Durch diese vergleichsweise große Bauhöhe des Winkelschleifers sind eine zugeordnete Schnitttiefe und somit auch eine entsprechende Eckgängigkeit des Winkelschleifers, d.h. dessen Tauglichkeit zum Schleifen in Ecken und Kanten, begrenzt.
Die Aufgabe der Erfindung ist es daher, einen neuen Winkelschleifer mit einem Verlängerungsabschnitt bereitzustellen, bei dem eine verbesserte Eckgängigkeit ermöglicht wird.The object of the invention is therefore to provide a new angle grinder with an extension portion, in which an improved cornering capability is made possible.
Diese Aufgabe wird gelöst durch einen Winkelschleifer gemäß Anspruch 1, mit einem länglichen Werkzeuggehäuse, das einen in radialer Richtung von einem Außenumfang begrenzten Motorgehäuseabschnitt und einen Verlängerungsabschnitt aufweist, die zusammen eine Gehäuselängsachse ausbilden, wobei im Bereich des Verlängerungsabschnitts eine Werkzeugaufnahme angeordnet ist, die mit einer Anlagefläche zur flächigen Anlage einer austauschbaren Schleifscheibe versehen ist. Zwischen der Anlagefläche und der Gehäuselängsachse ist ein Abstand ausgebildet, der kleiner oder gleich einem von der Gehäuselängsachse zum Außenumfang des Motorgehäuseabschnitts ausgebildeten, maximalen Radius ist, wobei eine Übertragungseinheit versehen ist, die nach Art eines Riemengetriebes ausgebildet ist.This object is achieved by an angle grinder according to claim 1, comprising an elongate tool housing having a radially limited from an outer circumference motor housing portion and an extension portion, which together form a housing longitudinal axis, wherein in the region of the extension portion a tool holder is arranged, which with a Contact surface is provided for the surface contact of a replaceable grinding wheel. Between the contact surface and the housing longitudinal axis, a distance is formed which is smaller than or equal to a maximum radius formed by the housing longitudinal axis to the outer circumference of the motor housing portion, wherein a transmission unit is provided, which is designed in the manner of a belt drive.
Die Erfindung ermöglicht somit die Bereitstellung eines Winkelschleifers mit einem Verlängerungsabschnitt, bei dem durch einen reduzierten Abstand zwischen der Anlagefläche der Schleifscheibe und der Gehäuselängsachse, eine verbesserte Eckgängigkeit erreicht wird.The invention thus makes it possible to provide an angle grinder with an extension section, in which an improved cornering capability is achieved by a reduced distance between the contact surface of the grinding wheel and the housing longitudinal axis.
Bevorzugt ist der Abstand kleiner oder gleich 50 mm.Preferably, the distance is less than or equal to 50 mm.
Somit kann ein kompakter Winkelschleifer mit einer vergrößerten Schnitttiefe bereitgestellt werden.Thus, a compact angle grinder with an increased depth of cut can be provided.
Im Motorgehäuseabschnitt ist vorzugsweise ein Antriebsmotor zum Antrieb der Werkzeugaufnahme angeordnet, wobei der Antriebsmotor über ein Winkelgetriebe mit einer Zwischenwelle und die Übertragungseinheit mit der Werkzeugaufnahme verbunden ist, und wobei das Winkelgetriebe mit der Zwischenwelle und die Übertragungseinheit im Verlängerungsabschnitt angeordnet sind.In the motor housing portion, a drive motor for driving the tool holder is preferably arranged, wherein the drive motor is connected via an angle gear with an intermediate shaft and the transmission unit with the tool holder, and wherein the angle gear with the intermediate shaft and the transmission unit are arranged in the extension portion.
Somit kann ein Winkelschleifer bereitgestellt werden, der vergleichsweise leichtgewichtig ist, da das Winkelgetriebe und die Übertragungseinheit in einem gemeinsamen Gehäuse bzw. dem Verlängerungsabschnitt angeordnet sind.Thus, an angle grinder can be provided which is comparatively lightweight, since the angle gear and the transmission unit are arranged in a common housing or the extension portion.
Gemäß Anspruch 1 ist die Übertragungseinheit nach Art eines Riemengetriebes ausgebildet.According to claim 1, the transmission unit is designed in the manner of a belt drive.
Somit kann eine funktions- und betriebssichere Übertragungseinheit bereitgestellt werden, über die die vom Antriebsmotor beabstandete Werkzeugaufnahme angetrieben werden kann.Thus, a functional and reliable transmission unit can be provided, via which the spaced apart from the drive motor tool holder can be driven.
Gemäß einer Ausführungsform weist das Riemengetriebe ein erstes und zweites Riemenrad auf, wobei das erste Riemenrad an der Zwischenwelle angeordnet ist und das zweite Riemenrad an einer der Werkzeugaufnahme zugeordneten Abtriebswelle angeordnet ist.According to one embodiment, the belt transmission has a first and second pulley, wherein the first pulley is disposed on the intermediate shaft and the second pulley is disposed on an output shaft associated with the tool holder.
Somit kann eine Drehbewegung des Antriebsmotors auf einfache Art und Weise auf die Zwischenwelle übertragen werden und diese kann über einen Riemen die Werkzeugaufnahme antreiben.Thus, a rotational movement of the drive motor can be transmitted in a simple manner to the intermediate shaft and this can drive the tool holder via a belt.
Vorzugsweise treibt das erste Riemenrad das zweite Riemenrad über einen Zahnriemen an.Preferably, the first pulley drives the second pulley via a toothed belt.
Somit kann ein Zahnriemen für das Riemengetriebe bereitgestellt werden, bei dem aufgrund eines nicht vorhandenen Schlupfs ein höherer Wirkungsgrad ermöglicht werden kann.Thus, a belt for the belt transmission can be provided, in which due to a non-existent slip, a higher efficiency can be made possible.
Der Zahnriemen weist bevorzugt eine Breite von 8 bis 16 mm auf.The toothed belt preferably has a width of 8 to 16 mm.
Somit kann ein leichter Zahnriemen mit einem geringen Bauraumbedarf bereitgestellt werden.Thus, a lightweight toothed belt can be provided with a small space requirement.
Das erste Riemenrad ist vorzugsweise auf einer einer Antriebsverzahnung des Winkelgetriebes zugewandten Seite der Zwischenwelle angeordnet.The first belt pulley is preferably arranged on a side of the intermediate shaft facing a drive toothing of the angle transmission.
Somit kann eine kompakte und bauraumsparende Anordnung des ersten Riemenrad auf der Zwischenwelle ermöglicht werden.Thus, a compact and space-saving arrangement of the first pulley on the intermediate shaft can be made possible.
Gemäß einer Ausführungsform weist das zweite Riemenrad eine Ausnehmung zur mindestens abschnittsweisen Aufnahme eines Lagerelements zur drehbeweglichen Lagerung der Abtriebswelle auf.According to one embodiment, the second pulley on a recess for at least partially receiving a bearing element for rotatably supporting the output shaft.
Somit kann eine Lagerung der Abtriebswelle ermöglicht werden, durch die ein entsprechender Bauraumbedarf des Winkelschleifers weiter reduziert werden kann.Thus, a bearing of the output shaft can be made possible through which a corresponding space requirement of the angle grinder can be further reduced.
Bevorzugt weist das Lagerelement einen Durchmesser auf, der kleiner oder gleich 20 mm ist.Preferably, the bearing element has a diameter which is less than or equal to 20 mm.
Somit kann ein Lagerelement bereitgestellt werden, dass im zweiten Riemenrad angeordnet werden kann.Thus, a bearing element can be provided that can be arranged in the second pulley.
Bevorzugt überragt das Lagerelement das zweite Riemenrad in eine von der Anlagefläche weggewandte Richtung maximal um eine Distanz, die kleiner oder gleich 2 mm ist.Preferably, the bearing element projects beyond the second pulley in a direction away from the contact surface by a distance which is less than or equal to 2 mm.
Somit kann eine kleine und kompakte Lageranordnung bereitgestellt werden.Thus, a small and compact bearing arrangement can be provided.
Vorzugsweise ist zwischen der Anlagefläche und einer von der Werkzeugaufnahme abgewandten Oberseite des Verlängerungsabschnitts eine Höhe ausgebildet und der Verlängerungsabschnitt bildet im Bereich der Werkzeugaufnahme einen Durchmesser aus, wobei die Höhe zum Durchmesser ein Verhältnis von 1/1,1 bis 1/1,6 ausbildet.Preferably, a height is formed between the contact surface and an upper side of the extension section facing away from the tool holder, and the extension section forms a diameter in the region of the tool holder, wherein the height to the diameter forms a ratio of 1 / 1.1 to 1 / 1.6.
Somit kann ein Verlängerungsabschnitt mit einer vergleichsweise niedrigen Höhe bereitgestellt werden.Thus, an extension section with a comparatively low height can be provided.
Zwischen der Gehäuselängsachse und einem freien axialen Ende einer Abtriebswelle der Werkzeugaufnahme ist bevorzugt eine Länge ausgebildet, die kleiner oder gleich dem maximalen Radius ist.Between the housing longitudinal axis and a free axial end of an output shaft of the tool holder, a length is preferably formed which is smaller than or equal to the maximum radius.
Somit können die Eckgängigkeit und die Schnitttiefe des Winkelschleifers auf einfache Art und Weise weiter verbessert bzw. vergrößert werden.Thus, the Eckgängigkeit and the depth of cut of the angle grinder can be further improved or increased in a simple manner.
Im Bereich des Verlängerungsabschnitts ist vorzugsweise zumindest eine Griffschale angeordnet, insbesondere eine Kunststoffgriffschale.In the region of the extension section, at least one grip shell is preferably arranged, in particular a plastic grip shell.
Somit kann auf einfache Art und Weise die Bereitstellung eines ergonomischen Handgriffs des Winkelschleifers mit verbesserter Handlichkeit ermöglicht werden.Thus, the provision of an ergonomic handle of the angle grinder with improved handiness can be made possible in a simple manner.
Gemäß einer Ausführungsform weist die zumindest eine Griffschale einen Außenumfang auf, der maximal 15% größer als der Außenumfang des Motorgehäuseabschnitts ist.According to one embodiment, the at least one grip shell has an outer circumference which is at most 15% larger than the outer circumference of the motor housing section.
Somit kann ein kompakter Winkelschleifer bereitgestellt werden.Thus, a compact angle grinder can be provided.
Bevorzugt weist das Werkzeuggehäuse zur Anordnung eines Zusatzhandgriffs eine Gewindebuchse auf.Preferably, the tool housing for arranging an additional handle on a threaded bushing.
Somit kann ein Zusatzhandgriff sicher und unkompliziert am Werkzeuggehäuse befestigt werden.Thus, an additional handle can be securely and easily attached to the tool housing.
Die Gewindebuchse ist bevorzugt im Bereich des Verlängerungsabschnitts angeordnet.The threaded bushing is preferably arranged in the region of the extension section.
Somit kann eine komfortable Handhabung des mit dem Zusatzhandgriff versehenen Winkelschleifers ermöglicht werden.Thus, a comfortable handling of the angle grinder provided with the additional handle can be made possible.
Im Bereich der Gewindebuchse ist vorzugsweise eine koaxial zur Gewindebuchse ausgebildete Verzahnung zur verstellbaren Anordnung des Zusatzhandgriffs am Werkzeuggehäuse angeordnet.In the area of the threaded bushing, a toothing, which is formed coaxially with the threaded bush, is preferably arranged on the tool housing for the adjustable arrangement of the auxiliary handle.
Somit kann eine jeweilige Arbeitsstellung des Zusatzhandgriffs individuell eingestellt und arretiert werden.Thus, a respective working position of the auxiliary handle can be individually adjusted and locked.
Vorzugsweise ist dem Zusatzhandgriff ein Endanschlag zugeordnet, der am Werkzeuggehäuse, an der Griffschale und/oder am Zusatzhandgriff angeordnet ist.Preferably, the auxiliary handle is associated with an end stop, which is arranged on the tool housing, on the handle shell and / or on the auxiliary handle.
Somit kann der Zusatzhandgriff lediglich in vorgegebenen Arbeitsstellungen arretiert werden, sodass z.B. Arbeitsstellungen des Zusatzhandgriffs nahe der Schleifscheibe, bei denen ein Verletzungsrisiko vergleichsweise hoch ist, vermieden werden können.Thus, the auxiliary handle can be locked only in predetermined working positions, so that e.g. Working positions of the auxiliary handle near the grinding wheel, in which a risk of injury is comparatively high, can be avoided.
Darüber hinaus wird die oben beschriebene Aufgabe gelöst durch einen Zusatzhandgriff für einen Winkelschleifer mit einem Werkzeuggehäuse, das mit einer Gewindebuchse zur Anordnung des Zusatzhandgriffs versehen ist, wobei koaxial zur Gewindebuchse um diese eine erste Verzahnung ausgebildet ist. Der Zusatzhandgriff weist ein Verstellelement mit einer zweiten Verzahnung zur Anordnung an der Gewindebuchse auf, wobei die erste und zweite Verzahnung zur Ausbildung einer formschlüssigen Verbindung ausgebildet sind.In addition, the above-described object is achieved by an additional handle for an angle grinder with a tool housing, which is provided with a threaded bushing for the arrangement of the auxiliary handle, wherein coaxially with the threaded bushing is formed around these a first toothing. The auxiliary handle has an adjusting element with a second toothing for arrangement on the threaded bush, wherein the first and second toothing are designed to form a positive connection.
Somit kann auf einfache Art und Weise ein in vorgegebenen Arbeitsstellungen an einem Winkelschleifer arretierbarer Zusatzhandgriff bereitgestellt werden.Thus, in a simple manner, a lockable in predetermined working positions on an angle grinder additional handle can be provided.
Des Weiteren wird das oben beschriebene Problem gelöst durch einen Winkelschleifer mit einem Werkzeuggehäuse, an dem eine Gewindebuchse zur Anordnung eines Zusatzhandgriffs angeordnet ist, wobei koaxial zur Gewindebuchse eine Verzahnung zur verstellbaren Anordnung des Zusatzhandgriffs am Werkzeuggehäuse ausgebildet ist.Furthermore, the above-described problem is solved by an angle grinder with a tool housing on which a threaded bushing for arranging an additional handle is arranged, wherein coaxial with the threaded bushing a toothing for adjustable arrangement of the auxiliary handle is formed on the tool housing.
Die Erfindung ermöglicht somit die Bereitstellung eines Winkelschleifers, der mit dem in vorgegebenen Arbeitsstellungen arretierbaren Zusatzhandgriff verwendbar ist.The invention thus enables the provision of an angle grinder, which can be used with the additional handle which can be locked in predetermined working positions.
Die Verzahnung ist vorzugsweise ringsegmentförmig ausgebildet, um nur eine Verstellung des Zusatzhandgriffs in einem vorgegebenen Bereich zu ermöglichen.The toothing is preferably designed in the form of a ring segment in order to allow only an adjustment of the auxiliary handle in a predetermined area.
Somit kann auf einfache Art und Weise ein geräte- und anwendungsspezifischer Winkelbereich zur Einstellung möglicher Arbeitsstellungen vorgegeben werden.Thus, a device and application-specific angular range for setting possible working positions can be specified in a simple manner.
Bevorzugt ist dem Zusatzhandgriff ein Endanschlag zugeordnet, der am Werkzeuggehäuse angeordnet ist.Preferably, the auxiliary handle is associated with an end stop, which is arranged on the tool housing.
Somit kann eine Einstellung potentiell Benutzer-gefährdender Arbeitsstellungen sicher und zuverlässig ausgeschlossen werden.Thus, an adjustment of potentially user-endangering working positions can be safely and reliably excluded.
Die Eingangs genannte Aufgabe wird auch gelöst durch ein Werkzeugsystem mit einem Winkelschleifer und mit einem Zusatzhandgriff, wobei der Winkelschleifer ein Werkzeuggehäuse aufweist, an dem eine Gewindebuchse zur Anordnung des Zusatzhandgriffs angeordnet ist, wobei koaxial zur Gewindebuchse eine erste Verzahnung zur verstellbaren Anordnung des Zusatzhandgriffs am Werkzeuggehäuse ausgebildet ist, und wobei der Zusatzhandgriff ein Verstellelement mit einer zweiten Verzahnung zur Anordnung an der Gewindebuchse aufweist, wobei die erste und zweite Verzahnung zur Ausbildung einer formschlüssigen Verbindung ausgebildet sind.The input mentioned object is also achieved by a tool system with an angle grinder and with an additional handle, the angle grinder having a tool housing, on which a threaded bushing for arranging the auxiliary handle is arranged, wherein coaxial with the threaded bush a first toothing for the adjustable arrangement of the auxiliary handle on the tool housing is formed, and wherein the auxiliary handle has an adjusting element with a second toothing for arrangement on the threaded bush, wherein the first and second toothing are formed to form a positive connection.
Die Erfindung ist anhand von in den Zeichnungen dargestellten Ausführungsbeispielen in der nachfolgenden Beschreibung näher erläutert. Es zeigen:
-
Fig. 1 eine perspektivische Seitenansicht eines Winkelschleifers mit einem Verlängerungsabschnitt gemäß der vorliegenden Erfindung, -
Fig. 2 eine perspektivische Teilansicht des Winkelschleifers vonFig. 1 , -
Fig. 3 eine perspektivische Draufsicht auf den Verlängerungsabschnitt vonFig. 2 , gesehen in Richtung eines Pfeils III vonFig. 2 , -
Fig. 4 eine Schnittansicht des Winkelschleifers vonFig. 1 , -
Fig. 5 eine vergrößerte Detailansicht eines Ausschnitts V vonFig. 4 , -
Fig. 6 eine perspektivische Ansicht des Winkelschleifers vonFig. 1 mit einer Gewindebuchse gemäß der vorliegenden Erfindung und einem daran befestigten Zusatzhandgriff gemäß der vorliegenden Erfindung, -
Fig. 7 eine perspektivische Ansicht der Gewindebuchse vonFig. 6 , -
Fig. 8 eine perspektivische Ansicht eines dem Zusatzhandgriff vonFig. 6 zugeordneten Verstellelements, -
Fig. 9 eine perspektivische Teilansicht des Winkelschleifers vonFig. 1 mit dem Zusatzhandgriff vonFig. 6 in einer ersten Endstellung, und -
Fig. 10 eine perspektivische Teilansicht des Winkelschleifers vonFig. 1 mit dem Zusatzhandgriff vonFig. 6 in einer zweiten Endstellung.
-
Fig. 1 3 a perspective side view of an angle grinder with an extension section according to the present invention, -
Fig. 2 a partial perspective view of the angle grinder ofFig. 1 . -
Fig. 3 a perspective top view of the extension portion ofFig. 2 , seen in the direction of an arrow III ofFig. 2 . -
Fig. 4 a sectional view of the angle grinder ofFig. 1 . -
Fig. 5 an enlarged detail view of a section V ofFig. 4 . -
Fig. 6 a perspective view of the angle grinder ofFig. 1 with a threaded bushing according to the present invention and an auxiliary handle attached thereto according to the present invention, -
Fig. 7 a perspective view of the threaded bush ofFig. 6 . -
Fig. 8 a perspective view of the auxiliary handle ofFig. 6 associated adjusting element, -
Fig. 9 a partial perspective view of the angle grinder ofFig. 1 with the additional handle ofFig. 6 in a first end position, and -
Fig. 10 a partial perspective view of the angle grinder ofFig. 1 with the additional handle ofFig. 6 in a second end position.
Die Werkzeugaufnahme 150 ist bevorzugt im Bereich des Verlängerungsabschnitts 130 angeordnet und zum Antrieb einer austauschbaren Schleifscheibe 160 ausgebildet. Hierfür weist die Werkzeugaufnahme 150 eine Abtriebswelle 157 mit einer Anlagefläche 155 zur flächigen Anlage der austauschbaren Schleifscheibe 160 auf, die bevorzugt einen Scheibendurchmesser von größer gleich 124 mm aufweist. Eine derartige Schleifscheibe ist hinreichend aus dem Stand der Technik bekannt, sodass hier zwecks Knappheit der Beschreibung auf eine eingehende Beschreibung hiervon verzichtet wird. Darüber hinaus ist zum Schutz vor z.B. bei einer Bearbeitung mit dem Winkelschleifer 100 entstehenden Schleifpartikeln der Schleifscheibe 160 bevorzugt eine Schutzhaube 170 zugeordnet. Diese ist vorzugsweise derart ausgebildet, dass sie die Abtriebswelle 157 in Richtung ihres freien Endes (547 in
Des Weiteren ist gemäß einer Ausführungsform zur elektrischen und/oder thermischen Isolation gegenüber einer Hand eines Benutzers im Bereich des Verlängerungsabschnitts 130 zumindest eine Griffschale 140 angeordnet, die vorzugsweise als Kunststoffgriffschale ausgebildet ist. Bevorzugt weist die zumindest eine Griffschale 140 eine ergonomische Griffform auf und ist mit einem Außenumfang 145 versehen, der maximal 15% größer ist als der Außenumfang 125 des Motorgehäuseabschnitts 120, aber auch zumindest annähernd gleich groß sein kann. Der Verlängerungsabschnitt 130 und die Griffschale 140 sind illustrativ einstückig ausgebildet, könnten jedoch auch mehrstückig ausgebildet sein.Furthermore, according to an embodiment for electrical and / or thermal insulation against a hand of a user in the region of the
Gemäß Anspruch 1 ist zwischen der Gehäuselängsachse 202 und der Anlagefläche 155 der Abtriebswelle 157 ein Abstand A ausgebildet, der kleiner oder gleich einem von der Gehäuselängsachse 202 zum Außenumfang 125 des Motorgehäuseabschnitts 120 ausgebildeten, maximalen Radius R ist. Bevorzugt weist dieser maximale Radius R einen Wert von 40 mm auf, jedoch sind auch andere Werte realisierbar. Dabei bildet der Motorgehäuseabschnitt 120 eine Höhe aus, die illustrativ zwischen der Linie 215 und der Linie 217 ausgebildet ist und doppelt so groß wie der maximale Radius R, also 80 mm ist. Vorzugsweise bildet diese Höhe des Motorgehäuseabschnitts 120 eine Gesamtbauhöhe des Winkelschleifers 100 aus.According to claim 1, a distance A is formed between the housing
Des Weiteren kann der Abstand A einen positiven oder negativen Wert haben, wobei ein Abstand A mit einem positiven Wert in
Gemäß Anspruch 1 ist die Übertragungseinheit 430 nach Art eines Riemengetriebes. Bevorzugt ist die Übertragungseinheit 430 mit einem ersten und zweiten Riemenrad 432, 434 ausgebildet. Das erste Riemenrad 432 ist illustrativ an der Zwischenwelle 425 angeordnet und das zweite Riemenrad 434 ist illustrativ an der Abtriebswelle 157 der Werkzeugaufnahme 150 angeordnet. Dabei sind das erste und zweite Riemenrad 432, 434 bevorzugt auf die Zwischenwelle bzw. die Abtriebswelle 157 aufgepresst.According to claim 1, the
Im Betrieb des Winkelschleifers 100 treibt das erste Riemenrad 432 das zweite Riemenrad 434 über einen bevorzugt als Zahnriemen ausgebildeten Riemen 436 an. Jedoch kann der Riemen 436 des Riemengetriebes auch nach Art eines beliebig anderen Riemens, z.B. eines Poly-V-Riemens, oder nach Art einer Kette ausgebildet sein. Darüber hinaus wird darauf hingewiesen, dass die Übertragungseinheit 430 auch auf beliebig andere Art und Weise ausgebildet sein kann, z.B. nach Art eines flexiblen Übertragungselements.During operation of the
Wie bei
Gemäß einer Ausführungsform weist das zweite Riemenrad 434 eine Ausnehmung 562 zur mindestens abschnittsweisen Aufnahme des zweiten Lagerelements 548 auf. Dabei überragt vorzugsweise eine - in
Des Weiteren ist zwischen der Gehäuselängsachse 202 und dem ersten axialen Ende 542 der Abtriebswelle 157 eine Länge X ausgebildet. Gemäß einer Ausführungsform ist diese Länge X kleiner oder gleich dem maximalen Radius R von
Es wird darauf hingewiesen das der Zusatzhandgriff 630 nicht nur über das Verstellelement 620 am Werkzeuggehäuse 110 angeordnet werden kann, sondern auch direkt, d.h. ohne das Verstellelement 620 am Werkzeuggehäuse 110 befestigt werden kann. Dabei ist der Zusatzhandgriff 630 vorzugsweise über eine Schraubverbindung und/oder eine Klemmverbindung am Werkzeuggehäuse 110 befestigbar. Bevorzugt weist die Schraubverbindung dabei eine Schraube mit einem Sterngriff auf.It should be noted that the
Vorzugsweise ist zur verstellbaren Anordnung des Zusatzhandgriffs 630 am Werkzeuggehäuse 110 im Bereich der Gewindebuchse 710 eine koaxial zur Gewindebuchse 710 ausgebildete Verzahnung 720 vorgesehen. Es wird darauf hingewiesen, dass die Anordnung der Gewindebuchse 710 mit der Verzahnung 720 lediglich beispielhaft auf der in
Bevorzugt ist die Verzahnung 720 ringsegmentförmig ausgebildet, so dass nur eine Verstellung des Zusatzhandgriffs 630 in einem vorgegebenen Winkelbereich ermöglicht wird. Hierfür ist dem Zusatzhandgriff 630 zumindest ein Endanschlag 731, 733; 721, 723 (841, 843 in
Gemäß einer Ausführungsform ist zur verstellbaren Anordnung des Zusatzhandgriffs 630 am Werkzeuggehäuse 110 koaxial zur Ausnehmung 830 eine vorzugsweise ringsegmentförmig ausgebildete Verzahnung 840 angeordnet. Bevorzugt weist die Verzahnung 840 an ihrem ersten und zweiten Ende 845, 847 jeweils einen Endanschlag 841, 843 auf, wobei der Endanschlag 841 am ersten Ende 845 und der Endanschlag 843 am zweiten Ende 847 angeordnet ist. Bevorzugt bilden die koaxial um die Gewindebuchse 710 ausgebildete Verzahnung 720 von
Claims (23)
- Angle grinder (100) having an elongate tool housing (110), which has a motor-housing portion (120), bounded in a radial direction by an outer perimeter (125), and an extension portion (130), which together form a housing longitudinal axis (202), wherein, in the region of the extension portion (130), a tool receptacle (150) is arranged, which is provided with an abutment face (155) for the flat abutment of an exchangeable grinding wheel (160), wherein, between the abutment face (155) and the housing longitudinal axis (202), a spacing (A) is formed that is less than or equal to a maximum radius (R) formed from the housing longitudinal axis (202) to the outer perimeter (125) of the motor-housing portion (120), characterized in that a transmission unit (430) is provided, which is configured in the manner of a belt drive.
- Angle grinder according to Claim 1, characterized in that the spacing (A) is less than or equal to 50 mm.
- Angle grinder according to Claim 1 or 2, characterized in that a drive motor (410) for driving the tool receptacle (150) is arranged in the motor-housing portion (120), wherein the drive motor (410) is connected to the tool receptacle (150) via an angular gear (420) with an intermediate shaft (425) and via the transmission unit (430), and wherein the angular gear (420) with the intermediate shaft (425) and the transmission unit (430) are arranged in the extension portion (130).
- Angle grinder according to Claim 3, characterized in that the belt drive (430) has a first and second belt pulley (432, 434), wherein the first belt pulley (432) is arranged on the intermediate shaft (425) and the second belt pulley (434) is arranged on an output shaft (157) assigned to the tool receptacle (150).
- Angle grinder according to Claim 4, characterized in that the first belt pulley (432) drives the second belt pulley (434) via a toothed belt (436).
- Angle grinder according to Claim 5, characterized in that the toothed belt (436) has a width of 8 to 16 mm.
- Angle grinder according to one of Claims 4 to 6, characterized in that the first belt pulley (432) is arranged on a side of the intermediate shaft (425) that faces a drive toothing (527) of the angular gear (420).
- Angle grinder according to one of Claims 4 to 7, characterized in that the second belt pulley (434) has a recess (562) for at least partially receiving a bearing element (548) for mounting the output shaft (157) in a rotatable manner.
- Angle grinder according to Claim 8, characterized in that the bearing element (548) has a diameter (d) that is less than or equal to 20 mm.
- Angle grinder according to Claim 8 or 9, characterized in that the bearing element (548) projects beyond the second belt pulley (434) in a direction away from the abutment face (155) at most by a distance (C) of less than or equal to 2 mm.
- Angle grinder according to one of the preceding claims, characterized in that a height (h) is formed between the abutment face (155) and a top side (212), facing away from the tool receptacle (150), of the extension portion (130), and the extension portion (130) forms a diameter (D) in the region of the tool receptacle (150), wherein the ratio of the height (h) to the diameter (D) is 1/1.1 to 1/1.6.
- Angle grinder according to one of the preceding claims, characterized in that a length (X) that is less than or equal to the maximum radius (R) is formed between the housing longitudinal axis (202) and a free axial end (542) of an output shaft (157) of the tool receptacle (150).
- Angle grinder according to one of the preceding claims, characterized in that at least one handle shell (140), in particular a plastics handle shell, is arranged in the region of the extension portion (130).
- Angle grinder according to Claim 13, characterized in that the at least one handle shell (140) has an outer perimeter (145) that is at most 15% greater than the outer perimeter (125) of the motor-housing portion (120).
- Angle grinder according to one of the preceding claims, characterized in that the tool housing (110) has a threaded bushing (710) for the arrangement of an auxiliary handle (630).
- Angle grinder according to Claim 15, characterized in that the threaded bushing (710) is arranged in the region of the extension portion (130).
- Angle grinder according to Claim 15 or 16, characterized in that a toothing (720), formed coaxially with the threaded bushing (710), for the adjustable arrangement of the auxiliary handle (630) is arranged on the tool housing (110) in the region of the threaded bushing (710).
- Angle grinder according to one of Claims 15 to 17, characterized in that the auxiliary handle (630) is assigned an end stop (731, 733; 721, 723; 841, 843), which is arranged on the tool housing (110), on the handle shell (140) and/or on the auxiliary handle (630).
- Angle grinder having a tool housing (110) according to one of Claims 1 to 14, characterized in that a threaded bushing (710) for the arrangement of an auxiliary handle (630) is arranged on the tool housing (110), wherein a toothing (720) for the adjustable arrangement of the auxiliary handle (630) is formed on the tool housing (110), coaxially with the threaded bushing (710).
- Angle grinder according to Claim 19, characterized in that the toothing (720) is configured in the form of a ring segment in order to allow the auxiliary handle (630) only to be adjusted in a predefined angular range.
- Angle grinder according to Claim 19 or 20, characterized in that the auxiliary handle (630) is assigned an end stop (731, 733; 721, 723; 841, 843), which is arranged on the tool housing (110).
- Tool system (690) having an angle grinder (100) according to one of the preceding claims, having an auxiliary handle (630) and having an adjusting element (620), wherein the angle grinder (100) has a tool housing (110) on which a threaded bushing (710) for the arrangement of the auxiliary handle (630) is arranged, wherein a first toothing (720) for the adjustable arrangement of the auxiliary handle (630) is formed on the tool housing (110), coaxially with the threaded bushing (710), and wherein the adjusting element (620) has a second toothing (840) for arrangement on the threaded bushing (710), wherein the first and second toothing (720; 840) are configured to form a form-fitting connection.
- Tool system (690) according to Claim 22, characterized in that the adjusting element (620) has a respective recess (820, 830) at its first and second axial ends (802, 804), wherein the recess (820) is configured for arrangement on the auxiliary handle (630) and the recess (830) is configured for arrangement on the tool housing (110) of the angle grinder (100).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014222987.1A DE102014222987A1 (en) | 2014-11-11 | 2014-11-11 | Angle grinder with an extension section |
Publications (2)
Publication Number | Publication Date |
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EP3023196A1 EP3023196A1 (en) | 2016-05-25 |
EP3023196B1 true EP3023196B1 (en) | 2019-03-27 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP15186373.5A Active EP3023196B1 (en) | 2014-11-11 | 2015-09-23 | Angle grinder with an elongation section |
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EP (1) | EP3023196B1 (en) |
DE (1) | DE102014222987A1 (en) |
Families Citing this family (1)
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DE102018204462A1 (en) | 2017-03-24 | 2018-09-27 | Kirsch Gmbh | Tool for grinding throat grooves or joints |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
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DE7734129U1 (en) * | 1977-11-07 | 1978-04-06 | Kalka, Veronika, 4901 Hiddenhausen | ANGLE GRINDER |
DE19745306C2 (en) * | 1997-10-14 | 1999-09-09 | Fein C & E | Handle arrangement for an angle grinder |
US6722955B2 (en) * | 2001-01-10 | 2004-04-20 | 3M Innovative Properties Company | Buckup plate assembly for grinding system |
DE20301372U1 (en) * | 2003-01-30 | 2004-06-09 | Dolmar Gmbh | Hand-held angle grinder tool powered by two-stroke petrol engine with drive shaft at right angles to grinding wheel axis of rotation |
DE102004034441A1 (en) * | 2004-07-16 | 2006-02-16 | Narex ÄŒeská LÃpa a.s. | Hand tool, in particular angle grinder |
-
2014
- 2014-11-11 DE DE102014222987.1A patent/DE102014222987A1/en not_active Withdrawn
-
2015
- 2015-09-23 EP EP15186373.5A patent/EP3023196B1/en active Active
Non-Patent Citations (1)
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EP3023196A1 (en) | 2016-05-25 |
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