EP2209590A1 - Hand-held power tool - Google Patents
Hand-held power toolInfo
- Publication number
- EP2209590A1 EP2209590A1 EP08804563A EP08804563A EP2209590A1 EP 2209590 A1 EP2209590 A1 EP 2209590A1 EP 08804563 A EP08804563 A EP 08804563A EP 08804563 A EP08804563 A EP 08804563A EP 2209590 A1 EP2209590 A1 EP 2209590A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- locking
- hand tool
- tool according
- latching
- neck
- 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
Links
- 230000001681 protective effect Effects 0.000 claims description 81
- 230000000087 stabilizing effect Effects 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 description 12
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 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
- 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
- B24B55/04—Protective covers for the grinding wheel
- B24B55/05—Protective covers for the grinding wheel specially designed for portable grinding machines
- B24B55/052—Protective covers for the grinding wheel specially designed for portable grinding machines 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
Definitions
- the invention relates to a hand tool according to the preamble of claim 1.
- a hand tool machine which is designed as an angle grinder.
- the angle grinder has a transmission housing with an output shaft emerging from the transmission housing and a transmission flange arranged on the transmission housing, which forms a flange neck.
- a protective device is received, which is rotatable in the circumferential direction.
- the rotational position of the protective device in the circumferential direction can be locked with a latching lever, which produces a positive connection with the protective device in its rest position.
- the locking lever is arranged transversely to the longitudinal axis of the angle grinder on the transmission housing.
- the invention relates to a hand tool, in particular an angle grinder, with a gear housing, a flange neck, with a recordable on the neck flange a receiving area for a tool forming protective device which is rotatable in the circumferential direction, and with at least one latching device for locking a rotational position of the protective device ,
- the latching device is at least partially integrated in the flange neck, which is in particular formed on the gear housing or molded onto the same.
- the Flange neck integrated is hereby arranged in particular within the flange neck, taken in the flange neck, fitted into the flange neck and / or formed integrally formed with the flange neck.
- the locking takes place radially starting from the flange neck towards the protective device.
- the locking movement or the movement of the latching device takes place radially or that the movement is carried out in the radial direction.
- the locking of the protective device additionally acts axially.
- the protective device is thus not only secured radially, but also axially against rotation or displacement.
- the locking can also take place in a direction other than the axial direction, but nevertheless acts in the axial direction.
- the locking takes place via a positive connection between locking device and protective device.
- a particularly secure locking of the protective device is ensured on the flange neck.
- the locking device comprises at least one locking element and at least one cooperating with the locking element locking element receiving.
- the locking element receptacle is formed on the protective device, whereby a simple production of the protective device can be realized.
- the locking element is arranged in the unlocked state in the flange neck, whereby the protective device can be rotated on the flange neck and repositioned.
- a plurality of latching elements are formed on the protective device.
- the axial securing the protective device is improved because these locking elements are circumferentially guided in a groove of the flange neck and thereby prevents axial slipping of the protective device.
- a very easy to produce and space-saving realization of the locking element recording provides that this is a recess or a depression.
- the latching device has at least one spring device, whereby advantageously automatically a permanent positive connection between the protective device and latching device is generated, which can be solved at any time preferably manually and with little effort.
- the spring device acts on the latching device starting from the flange neck towards the protective device, the use of the already available installation space in the gearbox housing or in the flange neck is possible.
- the spring device is protected in the gear housing or flange neck from dirt and damage, since it is surrounded by the receiving collar of the protection device.
- the latching element and / or the latching element receptacle is arranged on a latching slide.
- the latching element and / or the latching element receptacle is arranged on a latching lever.
- the locking slide and / or the locking lever is configured such that the protective device rests flush on the transmission housing, whereby a trouble-free rotation and repositioning of the protection device on the flange neck is possible.
- the detent lever is rotatable about an axis arranged in the flange neck, whereby the use of the existing installation space in the transmission housing or in the flange neck for the detent device is possible.
- the release of the lock can also be done by pulling the locking lever.
- a stabilizing neck is provided which at least partially surrounds a receiving collar of the protective device.
- the stabilizing neck has at least one latching element and / or at least one latching element receptacle. This makes it possible that the locking element engages not only in the protection device or in the receiving collar of the protection device, but also in the stabilizing neck, so that an even higher power flow from the protection device on the flange neck or the gear housing is made possible.
- the stabilizing neck has a tensioning device, as this makes it possible to compensate for any play between the stabilizing neck and the protective device.
- Fig. 1 shows a part of a hand tool in exploded view with a
- FIG. 2 is a plan view of the transmission flange of the power tool with the locking device according to the invention in a first embodiment
- FIG. 3 is a plan view of a transmission flange of a power tool with a locking device according to the invention in a second embodiment
- FIG. 4 is a perspective view of a part of a locking device according to the invention in a third embodiment
- FIG. 5 is a plan view of a gear flange of a hand tool with a locking device according to the invention in a fourth embodiment
- FIG. 6 is a perspective view of a portion of the locking device according to the invention in the fourth embodiment
- FIG. 7 is a plan view of a gear flange of a hand tool with a locking device according to the invention in a fifth embodiment
- FIG. 8 is a plan view of a gear flange of a power tool with a locking device according to the invention in a sixth embodiment.
- FIG. 1 shows a handheld power tool shown in partial detail.
- the hand tool is an angle grinder 10.
- the angle grinder 10 has a gear housing 12. From the gear housing 12 protrudes an output shaft 16 which carries at its free end a disc-shaped tool 18, for example a grinding wheel, which is rotatably driven about an axis 46 of the output shaft 16.
- the output shaft 16 is rotatably mounted in a not visible here bearing, which in the present embodiments of a transmission housing formed by the transmission housing 12 48 is recorded.
- the gear housing 12 forms a subsequent to the gear flange 48, freely projecting, cylindrical flange neck 14, which surrounds the output shaft 16.
- the flange neck 14 receives on its outer periphery a protective device, in the form of a protective cover 20, on.
- the protective cover 20 comprises a main body 50 and one with the
- Main body 50 connected receiving collar 42, which forms a central opening for the free passage of the output shaft 16.
- the receiving collar 42 is designed as a cylindrical body which runs parallel to the flange neck 14.
- the main body 50 is provided for protection of an operator of the power tool from sparks and / or material particles that arise during operation of the power tool.
- the base body 50 is formed by a plate-shaped element 52 which has a semicircular design, wherein the plate-shaped element 52 covers an angular range of approximately 180 ° of the tool 18. This will send sparks and / or any particles of material forward, away from the operator.
- a protective edge 70 Arranged on the plate-shaped element 52 is a protective edge 70, which is aligned initially perpendicular to the plate-shaped element 52 and subsequently parallel to the plate-shaped element 52.
- the protective cover 20 is placed with the receiving collar 42 on the flange neck 14 and should have only little play on the flange neck 14. Possibly can be at least partially eliminated by a compensating element, not shown here, such as a rubber ring, the game between the guard 20 and the flange neck 14.
- a compensating element not shown here, such as a rubber ring
- the receiving collar 42 of the protective cover 20 may also be designed as a kind of clamp, the adjustment is done by tightening a screw.
- the protective hood 20 is rotatable in the circumferential direction 22 on the flange neck 14.
- a locking device 24 is provided according to FIG. 1 to 8.
- the latching device 24 is at least partially integrated into the flange neck 14 of the gearbox flange 48.
- a large part of the components of the latching device 24 is integrated in the flange neck 14 and these components are surrounded there by the receiving collar 42 of the protective hood 20.
- the locking takes place radially starting from the flange neck 14 towards the protective hood 20.
- the locking of the Protective hood 20 via a positive connection between locking device 24 and protective cover 20.
- the locking device 24 comprises at least one locking element 26 and at least one cooperating with the locking element 26 Rastelementaufhahme 28, wherein it is preferably a bolt 26 and the Rastelementaufhahme a recess in the locking element 28 or one depression.
- the latching device 24 has at least one spring device 30, which acts on the latching device 24 starting from the flange neck 14 to the protective hood 20.
- an additional axial lock is provided.
- these are pins provided in the receiving collar of the protective hood, which engage in a circumferential groove 72 in the flange neck.
- This additional lock can be omitted due to the locking device 24 according to the invention.
- the inventive detent acts in addition to a radial direction 36 in the axial direction 54.
- a person skilled in the art can still provide an additional axial securing, if it makes sense to him.
- Fig. 1 to 8 show several embodiments of the invention.
- the latching device 24a to 24c is designed as a latching slide 32a to 32c
- the latching device 24d to 24f is designed as a latching lever 34d to 34f.
- the latching element 26a to 26f of the latching device 24a to 24f may be formed on the protective hood 20a to 20f or on the latching slide 32a to 32f or on the latching lever 34a to 34f
- the latching element receptacle 28a to 28f may be on the latching slide 32a to 32f or on the latching lever 34a to 34f or be formed on the protective hood 20a to 2Of.
- FIG. 1 to 4 show a gear flange 48a to 48c with integrated locking slide 32a to 32c in the locked state, wherein the locking slide 32a to 32c is in engagement with the protective hood 20a to 20c, ie in the present embodiments shown in FIG is on the locking slide 32a, 32b, a bolt 26a, 26b is formed, which engages in the locked state of the latching device 24a, 24b in a recess 28a, 28b of the Aufhahmebundes 42a, 42b of the protective cover 20a, 20b.
- FIG. 4 it is also possible to provide a recess 28c on the locking slide 32c and a bolt 26c on the protective hood 20c.
- the protective hood 20a to 20c is rotated in the circumferential direction 22a to 22c until the bolts 26a to 26c and a recess 28a to 28c in the receiving collar 42a to 42c are opposed and the bolts 26a to 26c by the force of the spring means 30a to 30c in the recess 28a to 28c moves and thereby produces a positive connection between flange neck 14a to 14c and protective hood 20a to 20c.
- FIG. 3 and 4 show that the locking slide 32b, 32c is designed such that the protective cover 20b, 20c with its receiving collar 42b, 42c rests flush on the gear flange 48b, 48c. This is achieved in that the locking slide 32b, 32c is axially embedded in the gear flange 48b, 48c, whereby in the axial direction 54b, 54c, a flat support surface 58b, 58c for the receiving collar 42b, 42c of the guard 20b, 20c is generated.
- FIG. 5 to 7 show a gear flange 48d to 48f with integrated locking lever 34d to 34f in the locked state, wherein the locking lever 34d to 34f is in engagement with the protective cover 2Od to 2Of, ie in the present embodiment, the locking lever 34d to 34f a Bolt 26d to 26f is formed, which engages in the locked state of the latching device 24d to 24f in a recess 28d to 28f of the receiving collar 42d to 42f of the protective cover 2Od to 2Of.
- detent levers 34d to 34f and on the protective hoods 2Od to 2Of are provided on the detent levers 34d to 34f and on the protective hoods 2Od to 2Of, respectively, in order to allow greater force flow from the flange neck 14d to 14f to the protective hoods 2Od to 2Of.
- the detent lever 34d to 34f is rotatable about an axis 38d to 38f disposed in the flange neck 14d to 14f.
- the protective cover 2Od to 2Of is rotated in the circumferential direction 22d to 22f until the bolts 26d to 26f and a recess 28d to 28f in the receiving collar 42d to 42f are opposed and the bolts 26d to 26f are moved by the force of the spring device 30d to 30f in FIG the recess 28d to 28f moves and thereby a form fit between flange neck 14d to 14f and
- the locking lever 34d to 34f is automatically brought into engagement via the spring device 30d to 30f whenever the bolts 26d to 26f and the recesses 28d to 28f are opposite each other and no force is exerted on the detent levers 34d to 34f.
- the locking lever 34d in the present embodiment shown in FIG. 5 and 6 in the clockwise direction 6Od always further jammed when turning the protective cover 2Od, so that a self-locking of the locking lever 34d arises.
- this locking device 24d it is possible that during rotation of the locking lever 34d against the clockwise direction 6d the bolt 26d is pressed out of the recess 28d in the protective cover 2Od and thus latching is possible, for example a quick adjustment of the protective cover 2Od in one direction to enable.
- FIGS. 5 and 6 show that the detent lever 34d is configured in such a way that the protective hood 20d can lie flush with the receiving flange 42d on the transmission flange 48d. This is achieved in that the locking lever 34d is inserted axially into the gear flange 48d, whereby in the axial direction 54d a flat bearing surface 58d for the receiving collar 42d of the protective cover 2Od is generated.
- the locking device 24e is designed such or the axis of rotation 38e positioned so that to release the positive connection and reaching the unlocked state of the locking lever 34e against the force of the spring means 30e has to be pulled in the direction of the flange neck 14e, so that the bolt 26e is disengaged, ie, the locking element 26e designed as a bolt is arranged in the flange neck 14e.
- latching slides 32 and / or latching levers 34 in a hand-held power tool 10, so that, for example, a latching slide 32 on the right and a latching slide 32 on the left of the handheld power tool 10 are provided.
- the protective cover 20 is released for rotation.
- Both the locking slide 32 and the locking lever 34 is provided that on the displacement of the locking slide 32 or pressing or pulling the locking lever 34, the positive connection between the guard 20 and locking device 24 is released so that no additional tool for adjusting the guard 20 required is.
- a feed is generated, which is applied to the locking slide 32 or the locking lever 34, whereby then the bolt 26 is disengaged.
- FIG. 8 shows a further embodiment variant of the angle grinder 1 Of with a stabilizing neck 4Of.
- FIG. 8 shows the gear flange 48f with the flange neck 14f, which receives the protective cover 20f on its outer circumference.
- the stabilizing neck 4Of is additionally provided, which at least partially surrounds the receiving collar 42f of the protective hood 2Of.
- the stabilizing neck 40f may preferably be fastened to the gear flange 48f via fastening means 62f, wherein the fastening means 62f may be any means which appears expedient to a person skilled in the art.
- the stabilizing neck 4Of for fastening fastening feet 62f which are connected via screw 64f with the gear flange 48f.
- the stabilizing neck 4Of has a tensioning device 44f, which may additionally also be provided as a fastening means.
- a tensioning device 44f serve as a clamping device 44f two angled ends 66f of the stabilization neck 4Of, which are braced against each other via a screw 68f.
- the stabilizing neck 4Of has at least one latching element 26f and / or at least one latching element receptacle 28f.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP13150785.7A EP2596906B1 (en) | 2007-11-05 | 2008-09-22 | Manual tool machine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007052684A DE102007052684A1 (en) | 2007-11-05 | 2007-11-05 | Hand tool |
PCT/EP2008/062637 WO2009059839A1 (en) | 2007-11-05 | 2008-09-22 | Hand-held power tool |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13150785.7A Division EP2596906B1 (en) | 2007-11-05 | 2008-09-22 | Manual tool machine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2209590A1 true EP2209590A1 (en) | 2010-07-28 |
EP2209590B1 EP2209590B1 (en) | 2013-11-20 |
Family
ID=40011340
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13150785.7A Active EP2596906B1 (en) | 2007-11-05 | 2008-09-22 | Manual tool machine |
EP08804563.8A Active EP2209590B1 (en) | 2007-11-05 | 2008-09-22 | Hand-held power tool |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13150785.7A Active EP2596906B1 (en) | 2007-11-05 | 2008-09-22 | Manual tool machine |
Country Status (6)
Country | Link |
---|---|
US (1) | US8454412B2 (en) |
EP (2) | EP2596906B1 (en) |
CN (1) | CN101848790B (en) |
DE (1) | DE102007052684A1 (en) |
RU (1) | RU2492989C2 (en) |
WO (1) | WO2009059839A1 (en) |
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DE102009028404A1 (en) * | 2009-08-10 | 2011-02-17 | Robert Bosch Gmbh | Machine tool with a protective hood |
CN201711848U (en) * | 2010-02-09 | 2011-01-19 | 南京德朔实业有限公司 | Motive power tool |
DE102010038509A1 (en) | 2010-07-28 | 2012-02-02 | Robert Bosch Gmbh | Hand tool |
JP5684056B2 (en) | 2010-08-16 | 2015-03-11 | 株式会社マキタ | Hand tool |
DE102010044613A1 (en) * | 2010-09-01 | 2012-03-01 | C. & E. Fein Gmbh | sharpener |
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DE102011085506A1 (en) * | 2011-10-31 | 2013-05-02 | Robert Bosch Gmbh | Supporting device for hand-held power tool e.g. angle grinding machine, has cup-shaped retainer for hanging up of plate-shaped tool portion and protective hood portion, and wall element which is provided with aperture |
JP5959421B2 (en) * | 2011-12-14 | 2016-08-02 | 株式会社マキタ | Grinder |
DE102011089758A1 (en) * | 2011-12-23 | 2013-06-27 | Robert Bosch Gmbh | Guard anti |
DE102012210762A1 (en) * | 2012-06-25 | 2014-01-02 | Robert Bosch Gmbh | Guard device |
DE102012210766A1 (en) * | 2012-06-25 | 2014-01-02 | Robert Bosch Gmbh | system |
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US8939816B2 (en) * | 2012-07-02 | 2015-01-27 | Sunmatch Industrial Co., Ltd. | Handheld pneumatic grinder with adjustable wheel guard structure |
CN105473281A (en) * | 2013-08-27 | 2016-04-06 | 日立工机株式会社 | Grinder |
KR101577642B1 (en) * | 2013-12-12 | 2015-12-15 | 대우조선해양 주식회사 | Device for fixing without adjusting tools of grinder cover |
JP6020767B2 (en) * | 2014-02-28 | 2016-11-02 | 日立工機株式会社 | Electric tool |
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GB201413293D0 (en) * | 2014-07-28 | 2014-09-10 | Black & Decker Inc | Mode change knob assembly |
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US10029348B2 (en) * | 2016-01-25 | 2018-07-24 | Jose Ramirez | Torque sensitive adjustable locking grinder guard |
EP3251791B1 (en) | 2016-05-06 | 2019-03-27 | Black & Decker Inc. | Reversible lever for a guard assembly for a power tool |
US10427270B2 (en) | 2016-10-01 | 2019-10-01 | Ingersoll-Rand Company | Belt sander ergonomic articulating arm belt with button release, lock, and sealed housing |
TWI611865B (en) * | 2017-02-23 | 2018-01-21 | Safety cover for grinder | |
US10307886B2 (en) * | 2017-03-17 | 2019-06-04 | G.A.W. Inc. | Guard and control apparatus for safe operation of a rotary cutter |
JP6307787B1 (en) * | 2017-05-26 | 2018-04-11 | 株式会社ナカヤ | Guard mounting mechanism |
DE102017213743A1 (en) * | 2017-08-08 | 2019-02-14 | Robert Bosch Gmbh | Protective device for a hand tool machine |
DE102017213747A1 (en) * | 2017-08-08 | 2019-02-14 | Robert Bosch Gmbh | Protective device for a hand tool machine |
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CN111791129B (en) * | 2019-04-03 | 2023-04-21 | 南京泉峰科技有限公司 | Multifunctional electric tool |
TWI723507B (en) * | 2019-08-22 | 2021-04-01 | 車王電子股份有限公司 | Protective device for electric tools |
CN111660168A (en) * | 2020-06-22 | 2020-09-15 | 筑岚门窗设计(杭州)有限公司 | Anti-sputtering polishing device for machining hardware of building door and window |
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2007
- 2007-11-05 DE DE102007052684A patent/DE102007052684A1/en not_active Withdrawn
-
2008
- 2008-09-22 EP EP13150785.7A patent/EP2596906B1/en active Active
- 2008-09-22 CN CN200880114823XA patent/CN101848790B/en active Active
- 2008-09-22 EP EP08804563.8A patent/EP2209590B1/en active Active
- 2008-09-22 WO PCT/EP2008/062637 patent/WO2009059839A1/en active Application Filing
- 2008-09-22 RU RU2010122643/02A patent/RU2492989C2/en active
- 2008-09-22 US US12/440,534 patent/US8454412B2/en active Active
Non-Patent Citations (1)
Title |
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See references of WO2009059839A1 * |
Also Published As
Publication number | Publication date |
---|---|
RU2492989C2 (en) | 2013-09-20 |
EP2596906A3 (en) | 2013-10-16 |
RU2010122643A (en) | 2011-12-20 |
WO2009059839A1 (en) | 2009-05-14 |
CN101848790B (en) | 2013-08-21 |
US20100178857A1 (en) | 2010-07-15 |
US8454412B2 (en) | 2013-06-04 |
EP2596906A2 (en) | 2013-05-29 |
CN101848790A (en) | 2010-09-29 |
EP2596906B1 (en) | 2014-09-10 |
EP2209590B1 (en) | 2013-11-20 |
DE102007052684A1 (en) | 2009-05-07 |
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