EP0610801A1 - Outil à main de surfaçage - Google Patents

Outil à main de surfaçage Download PDF

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Publication number
EP0610801A1
EP0610801A1 EP94101587A EP94101587A EP0610801A1 EP 0610801 A1 EP0610801 A1 EP 0610801A1 EP 94101587 A EP94101587 A EP 94101587A EP 94101587 A EP94101587 A EP 94101587A EP 0610801 A1 EP0610801 A1 EP 0610801A1
Authority
EP
European Patent Office
Prior art keywords
tool holder
grinding plate
tool according
hand
hand tool
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP94101587A
Other languages
German (de)
English (en)
Other versions
EP0610801B2 (fr
EP0610801B1 (fr
Inventor
Steffen Dipl.-Ing. Wünsch
Joao Dipl.-Ing. Bergner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25922754&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0610801(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to EP95118775A priority Critical patent/EP0710527B1/fr
Priority claimed from EP95118775A external-priority patent/EP0710527B1/fr
Publication of EP0610801A1 publication Critical patent/EP0610801A1/fr
Application granted granted Critical
Publication of EP0610801B1 publication Critical patent/EP0610801B1/fr
Publication of EP0610801B2 publication Critical patent/EP0610801B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/04—Portable grinding machines, e.g. hand-guided; Accessories therefor with oscillating grinding tools; Accessories therefor

Definitions

  • the invention relates to a handheld power tool according to the preamble of claim 1.
  • US 3 160 995 discloses a hand tool for grinding surfaces close to the edge, in particular in corners or along fillets.
  • the hand tool has a sanding plate with a triangular base. Its working movement swings back and forth about a fixed axis that is normal to the base. The axis penetrates the grinding disc geometrically near a forward-facing corner.
  • the angle of the corner in the front area of the sanding plate is less than 90 °, so that the sanding plate can be used for sanding in the outermost, near-edge areas of corners or fillets.
  • the edges of the grinding tool are curved, as is also known in the case of irons, for grinding flush at hard-to-reach places.
  • the plan of the sanding plate designed as an equilateral triangle, like an iron with curved side edges, has, like all such triangles, three corner angles, each less than 90 °.
  • hand-held machine tools with a rectangular grinding plate which, by means of an eccentric drive, perform a tied, circular movement.
  • These hand-held machine tools are referred to as orbital sanders, although their tool does not actually perform any oscillating movement.
  • the known hand machine tools are powerful but relatively expensive to build. They have a high weight, a high energy requirement, a high level of noise and need to change tools, i.e. Changing the sanding plate, an auxiliary tool.
  • the hand tool according to the invention with the characterizing features of claim 1 in contrast, has the advantage of simple design, low noise, low energy requirements, simple manufacture, small moving masses, convenient quick change of the tool, in particular the sanding sheet together with the grinding plate, without auxiliary tools.
  • FIG. 1 shows the side view of a hand tool according to the invention
  • 2 shows a plan view of the hand-held power tool according to FIG. 1
  • FIG. 3 shows an enlarged detail of the front region of the hand-held power tool according to FIG. 1
  • FIG. 4 shows a top view of the tool holder
  • FIGS. 5 and 6 oscillating elements of the tool holder according to FIG. 4
  • FIG. 7 shows a side view of FIG. 4 in particular 8, a side view of the grinding plate, according to FIG. 8, in section
  • FIG. 10 a bellows for dust extraction to be coupled with the tool holder
  • FIG. 11 a side view of the tool holder from the side of the bellows 12 shows a view of the tool holder from below
  • FIG. 13 shows a top view of a further embodiment of a grinding plate
  • FIG. 14 shows the side view of the grinding plate according to FIG. 13.
  • the electric hand machine tool shown in FIG. 1 is designed as an orbital sander 1, which has a machine housing 2 in which a motor 3 is arranged.
  • the orbital sander 1 carries an on / off switch 4 at the top, in particular for operation with the thumb.
  • a motor control adjusting wheel 5 is arranged in the rear area of the machine housing 2.
  • An electrical connection line 6 with a protective sleeve 7 emerges from the rear of the machine housing 2.
  • the orbital sander 1 carries a sanding plate 8 for receiving sanding sheets (not shown), which is detachably attached to a tool holder 9 in a latching manner.
  • Rotations of the motor 3 are transmitted to the tool holder 9 and thus to the grinding plate 8 by a flexible shaft 10, which is guided in the machine housing 2 via a lateral vibration limitation 11.
  • the flexible shaft 10 ends at one end in an eccentric pin 12, with which it is on the one hand via a needle bearing 13 on the tool holder 9 and on the other hand via a lower roller bearing 14 on the machine housing 2 is rotatably supported near the tool holder 9 and facing it.
  • the flexible shaft 10 is coupled to a motor shaft (not explained in more detail) via a plug-in coupling 15.
  • the flexible shaft 10 is rotatably mounted in an upper roller bearing 16 in the machine housing 2.
  • the tool holder 9 is secured via leaf spring-like oscillating elements 17, 18 on the machine housing 2 against loss and against rotation.
  • a bellows 21 is arranged as an elastic connecting element between a mouth 19 for dust discharge on the tool holder 9 and a dust removal channel 20 in the machine housing 2, through which dust can flow freely through the circular movement of the tool holder 9.
  • the tool holder 9 carries a control button 22 which is easily accessible from the front or from above and which can be moved to the rear and is integrally connected to a bolt 23.
  • a control button 22 which is easily accessible from the front or from above and which can be moved to the rear and is integrally connected to a bolt 23.
  • latch 23 engages in a locking hook 24 of the grinding plate 8 and thereby holds the grinding plate 8 on the tool holder 9.
  • FIG. 3 the machine housing 2, the flexible shaft 10, the rear and the front oscillating element 17, 18, the bellows 21, the lower roller bearing 14 and the eccentric pin 12.
  • a needle bearing 29 can be seen between the tool holder 9 and the eccentric pin 12, a compensating mass 30 arranged on the eccentric pin 12 for Reduce the imbalance occurring during the eccentric movement of the tool holder 9 with the grinding plate 8.
  • the control button 22 is displaceably supported against the force of a compression spring 31.
  • the control button 22 On the side facing the grinding plate 8, the control button 22 has a recess 32 whose left-hand contour has two inclined surfaces 33, 34 which form a beak-like tip. This tip is opposed to a similar tip of a latching hook 24, which is formed in one piece from a fixed sanding plate 35.
  • the locking hook 24 carries two counter bevels 36, 37.
  • the upper inclined surface 33 of the bolt 23 or the control button 22 hooks and braces, engaging under the locking hook 24, against the lower counter bevel 37 and thus stabilizes the locking of the grinding plate 8 on the tool holder 9, so that in the tensioned state, the grinding plate 8 is pressed firmly against the tool holder 9.
  • the control button 22 does not have to be moved backwards, since the latching hook 24 slides on the latch 23, automatically pushes it back and latches.
  • FIG 4 the top view of the tool holder 9 is shown with the vibrating elements 17, 18 and the mouth 19 of the dust removal channel 20 and with two engagement openings 39, 40, the opening 41 for the needle bearing 13 or for the eccentric pin 12 and in the front corner 42 the opening 43 for receiving the control button 22.
  • FIGS. 5 and 6 the vibrating elements 17, 18 shown. It is clear from this that the rear oscillating element 17 is a pair of three individual oscillating columns and the front oscillating element 18 consists of four individual oscillating columns.
  • Figure 7 illustrates the arrangement of the vibrating elements 17, 18 on the tool holder 9 and shows in the side view of Figure 4 along the section line of the arrows YY the T-profile of the vibrating elements 17, 18, which with their upper transverse blades in corresponding, unspecified recesses of the machine housing 2 are arranged positively.
  • FIG. 8 shows a view from below of the grinding plate 8 and clarifies its triangular outline with side edges 44, 45, 46 curved outwards.
  • suction openings 47 on a common pitch circle and the support claws 48 explained for FIG. 9 49, 50, 51, 52, 53 or the three locking hooks 24 near the grinding plate corners 54, 55, 56.
  • the arrows XX show the section for FIG. 9.
  • FIG. 9 shows the side view of the grinding plate 8 along the arrows X-X according to FIG. 8.
  • the grinding plate 8 consists of a grinding plate plate 35, in particular made of rigid plastic, and of a sanding pad cushion 57, in particular made of flexible plastic.
  • the sanding plate 8 has a hook and loop fastener system (not described in more detail) to which the sanding sheets (not shown) or other tools with velor backing fit.
  • the grinding plate plate 35 On the side facing the tool holder 9, the grinding plate plate 35 carries in each grinding plate corner 54, 55, 56 mutually opposite support claws 48, 49, 50, 51, 52, 53 as well as a locking hook 24 symmetrically divided by the bisector of the angle Pointed, outwardly facing, obliquely arranged support and holding surfaces 58, 59.
  • Die Locking hooks 24 also have counter-bevels 36, 37 tapering towards a tip and facing inwards towards the center of the grinding plate 8, which are provided for latching the bolt 23 of the control button 22 (FIG. 3).
  • the grinding plate 8 can be assigned as desired to the corners of the tool holder.
  • the function of the support claws 48, 49, 50, 51, 52, 53 changes depending on whether they engage in the engagement openings 39, 40 of the tool holder 9 and thus hold the grinding plate 8 on the tool holder 9 like a hinge or whether the support claws 48, 49, 50, 51, 52, 53 act as an elastic spacer spring, slide on the support bevels 62, 63, 64, 65 (FIG. 12) and hold the grinding plate 8 biased against the tool holder 9, so to speak.
  • FIG. 10 shows the enlargement of a bellows 21 according to FIGS. 1 and 3 with a flat, rectangular cross section, corresponding to the mouth 19 according to FIG. 4.
  • FIGS. 11 and 12 show a view of the tool holder 9 from behind and from below.
  • the cams 60, 61 can be seen, which cooperate with the support claws 48, 49, 50, 51, 52, 53 and ensure play-free attachment of the grinding plate 8 to the tool holder 9.
  • the same task have bevels 62, 63, 64, 65, which are arranged on the inside on the side surfaces 66, 67 of the tool holder 9 and, sliding on the support claws 48, 49, 50, 51, 52, 53 for clamping between the grinding plates 8 and Ensure tool holder 9 and thus ensure a play-free arrangement.
  • the sliding guide 68 for receiving the control button 22 can be seen particularly well from below.
  • FIGS. 13 and 14 show a special grinding plate 70.
  • the special grinding plate 70 analogous to grinding plate 8 according to FIGS. 8, 9, carries supporting claws 72, 73, 74, 75, 76, 77, which are opposite each other in mirror image, in each inner contour corner 81, 82, and one due to the longitudinal bisecting line of symmetrically divided locking hooks 71.
  • the support claws 72, 73, 74, 75, 76, 77 have outward-pointing, beak-like, obliquely arranged support and holding surfaces 48, 85.
  • the locking hook 71 has inwards, towards the center of the grinding plate 70 facing counter-bevels 86, 87, which are provided for latching the bolt 23 of the control button 22 (Fig. 3).
  • the grinding plate 70 can only be coupled to the tool holder 9 in the longitudinal direction, because only its forwardly extended area is intended for grinding and not, as in the exemplary embodiment according to FIGS. 8, 9, the area immediately below the tool holder 9 .
  • a sanding plate 70 according to FIGS. 13, 14 it is possible to grind in narrow spaces, for example louvres from shutters, doors or, for example, closely spaced radiator fins.
  • the grinding plate 8 which can be released via the operating button 22 without an auxiliary tool, can be exchanged particularly quickly for further grinding plates (not shown), preparatively equipped with sanding sheets of different grain sizes, or for a special grinding plate 70 according to FIGS. 13, 14. Time-consuming loosening of the Velcro fastener between sanding plate 8 and sanding sheet is eliminated because the respective sanding sheet can remain on its sanding plate. In this way, grinding work of different surface qualities can be carried out conveniently in alternation.
  • the grinding plate 8 and / or the tool holder 9 rise like a truncated pyramid over their base area, in particular together, form a truncated pyramid so that the outermost edges of the sanding sheet are always in the field of vision of the user of the orbital sander.
  • the channel outlet 25 for removal of grinding dust or the like is arranged asymmetrically at the rear end of the machine housing 2 in a machine housing shell half 27, the channel outlet 25 can be made with high accuracy, so that hoses or the like. For dust removal particularly tight and are securely connectable against unwanted loosening.
  • a correspondingly suitable separating plate is clipped on analogously to the type of fastening of the grinding plates mentioned.
  • this cutting plate for example, floor coverings and wallpapers can be easily removed from the surface.
  • a scraper and / or a saw is used instead of a grinding plate attachable to the tool holder.
  • the tool holder with the grinding plate is mounted in a lockable joint on the machine housing, so that the grinding plate plane or the like can be pivoted to adapt the orbital sander to angled, difficult to access workpieces.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP94101587A 1993-02-04 1994-02-03 Outil à main de surfaçage Expired - Lifetime EP0610801B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP95118775A EP0710527B1 (fr) 1993-02-04 1994-02-03 Outil à main de surfaçage

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4303044 1993-02-04
DE4303044A DE4303044A1 (de) 1993-02-04 1993-02-04 Handwerkzeugmaschine zur Flächenbearbeitung
EP95118775A EP0710527B1 (fr) 1993-02-04 1994-02-03 Outil à main de surfaçage

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP95118775A Division EP0710527B1 (fr) 1993-02-04 1994-02-03 Outil à main de surfaçage
EP95118775.6 Division-Into 1994-02-03

Publications (3)

Publication Number Publication Date
EP0610801A1 true EP0610801A1 (fr) 1994-08-17
EP0610801B1 EP0610801B1 (fr) 1996-07-10
EP0610801B2 EP0610801B2 (fr) 2002-09-04

Family

ID=25922754

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94101587A Expired - Lifetime EP0610801B2 (fr) 1993-02-04 1994-02-03 Outil à main de surfaçage

Country Status (2)

Country Link
EP (1) EP0610801B2 (fr)
DE (1) DE4303044A1 (fr)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0699505A1 (fr) * 1994-08-25 1996-03-06 Black & Decker Inc. Feuilles abrasives
WO1997042002A1 (fr) * 1996-05-02 1997-11-13 Robert Bosch Gmbh Meuleuse portative electrique
US5743791A (en) * 1995-02-09 1998-04-28 Porter Cable Corporation Sanding system
US5759094A (en) * 1995-02-09 1998-06-02 Porter-Cable Corporation In-line detail sander
US5772498A (en) * 1996-03-08 1998-06-30 Robert Bosch Gmbh Electrical hand grinder
US5855504A (en) * 1996-05-02 1999-01-05 Robert Bosch Gmbh Hand-operated orbital sander
US5888128A (en) * 1996-05-02 1999-03-30 Robert Bosch Gmbh Hand grinder
EP0953407A1 (fr) * 1998-04-29 1999-11-03 Black & Decker Inc. Outil vibrant portatif
US6129618A (en) * 1996-08-09 2000-10-10 Robert Bosch Gmbh Oscillating sander
CN1082414C (zh) * 1996-05-02 2002-04-10 罗伯特-博希股份公司 手持式电动磨光机
WO2005108010A1 (fr) * 2004-04-01 2005-11-17 Robert Bosch Gmbh Machine a rectifier guidee a la main, unite de fixation de la machine a rectifier et boitier de la machine a rectifier
CN100446923C (zh) * 2002-10-14 2008-12-31 罗伯特·博施有限公司 制造用于手持式电动磨削机、由弹性材料制成的磨板的方法
DE10132885B4 (de) * 2001-07-06 2009-01-02 Robert Bosch Gmbh Handschleifmaschine
CN102310352A (zh) * 2010-07-05 2012-01-11 创科电动工具科技有限公司 砂光机
US8398457B2 (en) 2008-08-20 2013-03-19 Black & Decker Inc. Multi-sander
US9421682B2 (en) 2011-07-18 2016-08-23 Black & Decker Inc. Multi-head power tool with reverse lock-out capability
US9956677B2 (en) 2013-05-08 2018-05-01 Black & Decker Inc. Power tool with interchangeable power heads

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29614325U1 (de) * 1996-08-21 1996-10-31 Kress-Elektrik GmbH & Co Elektromotorenfabrik, 72406 Bisingen Handwerkzeugmaschine zur Flächenbearbeitung
DE102022207828A1 (de) 2022-07-29 2024-02-01 Robert Bosch Gesellschaft mit beschränkter Haftung Verbindungsvorrichtung, Werkzeugvorrichtung, Werkzeugsystem und Werkzeugmaschinensystem

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB686363A (en) * 1950-07-14 1953-01-21 Sundstrand Machine Tool Co Improvements in or relating to rubbing machine and demountable rubbing means thereof
FR2529497A1 (fr) * 1982-07-02 1984-01-06 Black & Decker Inc Perfectionnement aux outils portables a plateau vibrant, notamment aux ponceuses vibrantes
EP0372376A2 (fr) * 1988-12-06 1990-06-13 C. & E. FEIN GmbH & Co. Mécanisme d'entraînement oscillant
DE9205338U1 (de) * 1991-12-15 1992-06-25 Dualflex Co., Ltd., Windsor, Ontario Vieleckig geformter Schleifteller

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB686363A (en) * 1950-07-14 1953-01-21 Sundstrand Machine Tool Co Improvements in or relating to rubbing machine and demountable rubbing means thereof
FR2529497A1 (fr) * 1982-07-02 1984-01-06 Black & Decker Inc Perfectionnement aux outils portables a plateau vibrant, notamment aux ponceuses vibrantes
EP0372376A2 (fr) * 1988-12-06 1990-06-13 C. & E. FEIN GmbH & Co. Mécanisme d'entraînement oscillant
DE9205338U1 (de) * 1991-12-15 1992-06-25 Dualflex Co., Ltd., Windsor, Ontario Vieleckig geformter Schleifteller

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0699505A1 (fr) * 1994-08-25 1996-03-06 Black & Decker Inc. Feuilles abrasives
EP0765713A3 (fr) * 1994-08-25 1997-07-30 Black & Decker Inc Feuilles abrasives
US6045887A (en) * 1994-08-25 2000-04-04 Black & Decker Inc. Abrasive sheets
US8167683B2 (en) 1995-02-09 2012-05-01 Black & Decker Inc. In-line sander
US5743791A (en) * 1995-02-09 1998-04-28 Porter Cable Corporation Sanding system
US5759094A (en) * 1995-02-09 1998-06-02 Porter-Cable Corporation In-line detail sander
US6257969B1 (en) 1995-02-09 2001-07-10 Porter-Cable/Delta In-line sander
US6042460A (en) * 1995-02-09 2000-03-28 Porter-Cable Corporation In-line sander
US5772498A (en) * 1996-03-08 1998-06-30 Robert Bosch Gmbh Electrical hand grinder
CN1074970C (zh) * 1996-03-08 2001-11-21 罗伯特-博希股份公司 电动手工研磨机
US6004194A (en) * 1996-05-02 1999-12-21 Robert Bosch Gmbh Electric hand-operated grinder
US5888128A (en) * 1996-05-02 1999-03-30 Robert Bosch Gmbh Hand grinder
US5855504A (en) * 1996-05-02 1999-01-05 Robert Bosch Gmbh Hand-operated orbital sander
CN1066994C (zh) * 1996-05-02 2001-06-13 罗伯特-博希股份公司 手工电动磨光机
DE19617478B4 (de) * 1996-05-02 2006-06-29 Robert Bosch Gmbh Handschleifmaschine
CN1082414C (zh) * 1996-05-02 2002-04-10 罗伯特-博希股份公司 手持式电动磨光机
CN1082415C (zh) * 1996-05-02 2002-04-10 罗伯特-博希股份公司 手持式磨光机
WO1997042002A1 (fr) * 1996-05-02 1997-11-13 Robert Bosch Gmbh Meuleuse portative electrique
US6129618A (en) * 1996-08-09 2000-10-10 Robert Bosch Gmbh Oscillating sander
DE19632218B4 (de) * 1996-08-09 2007-08-23 Robert Bosch Gmbh Schwingschleifer
EP0953407A1 (fr) * 1998-04-29 1999-11-03 Black & Decker Inc. Outil vibrant portatif
CN1094086C (zh) * 1998-04-29 2002-11-13 布莱克和德克尔公司 动力驱动振动手工工具
DE10132885B4 (de) * 2001-07-06 2009-01-02 Robert Bosch Gmbh Handschleifmaschine
CN100446923C (zh) * 2002-10-14 2008-12-31 罗伯特·博施有限公司 制造用于手持式电动磨削机、由弹性材料制成的磨板的方法
US7771253B2 (en) 2004-04-01 2010-08-10 Robert Bosch Gmbh Hand-guided sander, sander cradle, and sander housing
WO2005108010A1 (fr) * 2004-04-01 2005-11-17 Robert Bosch Gmbh Machine a rectifier guidee a la main, unite de fixation de la machine a rectifier et boitier de la machine a rectifier
US8398457B2 (en) 2008-08-20 2013-03-19 Black & Decker Inc. Multi-sander
US8613644B2 (en) 2008-08-20 2013-12-24 Black & Decker Inc. Multi-sander
US8821220B2 (en) 2008-08-20 2014-09-02 Black & Decker Inc. Power tool with interchangeable tool head
US9724799B2 (en) 2008-08-20 2017-08-08 Black & Decker Inc. Power tool with interchangeable tool head
US10906155B2 (en) 2008-08-20 2021-02-02 Black & Decker Inc. Power tool with interchangeable tool head
CN102310352A (zh) * 2010-07-05 2012-01-11 创科电动工具科技有限公司 砂光机
US9421682B2 (en) 2011-07-18 2016-08-23 Black & Decker Inc. Multi-head power tool with reverse lock-out capability
US9956677B2 (en) 2013-05-08 2018-05-01 Black & Decker Inc. Power tool with interchangeable power heads
US10661428B2 (en) 2013-05-08 2020-05-26 Black & Decker Inc. Power tool with interchangeable tool heads

Also Published As

Publication number Publication date
DE4303044A1 (de) 1994-08-11
EP0610801B2 (fr) 2002-09-04
EP0610801B1 (fr) 1996-07-10

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