EP0321463B1 - Mounting for accessory units - Google Patents

Mounting for accessory units Download PDF

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Publication number
EP0321463B1
EP0321463B1 EP19870904505 EP87904505A EP0321463B1 EP 0321463 B1 EP0321463 B1 EP 0321463B1 EP 19870904505 EP19870904505 EP 19870904505 EP 87904505 A EP87904505 A EP 87904505A EP 0321463 B1 EP0321463 B1 EP 0321463B1
Authority
EP
European Patent Office
Prior art keywords
lever
holding part
aperture
pins
opening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19870904505
Other languages
German (de)
French (fr)
Other versions
EP0321463A1 (en
Inventor
Wolfgang Schmid
Herbert Wiesner
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
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0321463A1 publication Critical patent/EP0321463A1/en
Application granted granted Critical
Publication of EP0321463B1 publication Critical patent/EP0321463B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B25F5/003—Stops for limiting depth in rotary hand tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/02—Construction of casings, bodies or handles
    • 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 invention relates to a holding part for lateral attachment to a hand tool according to the preamble of the main claim.
  • mounts arranged on additional handles with spring-loaded pressing elements for holding and releasing a depth stop have been described.
  • the attachment of other additional devices such as suction devices, drilling angle meters, etc. is very cumbersome because the pressing elements are so unfavorably arranged that they cannot be easily operated.
  • Another disadvantage is that the pressing elements have to be constantly pressed down by hand during the process of inserting or adjusting the depth stop, and this hand is therefore no longer free.
  • the grooved pressing surface can disengage or the spring must be dimensioned very heavily in the case of heavy use (e.g. impact operation), which makes operation more difficult.
  • the holding part according to the invention with the characterizing features of the main claim has the advantage that the handle end of the locking lever is freely accessible at all times, even if additional devices are inserted laterally into the holding part. Operation is very simple and convenient with one finger. After opening the lock, the lever remains in the open position due to the missing spring even when the finger or hand is removed. This gives the operator both hands free to insert, remove or adjust the additional device (e.g. depth stop). In the locked position, the lever remains self-locking in its position on the circular arc. The lock does not release even in hammer drill or hammer operation. The low gradient of the circular arc path offers additional security, so that even with small displacements of the lever, the toothing still remains in engagement with the additional device. The entire holding part including the lever can be produced entirely in plastic and is therefore inexpensive. In addition, the lever is very easy to assemble with a handle.
  • FIG. 1 shows an additional handle with a holding part in cross section
  • FIG. 2 shows a section along line A-A in FIG. 1.
  • the holding part 1 is arranged laterally on the fastening head 2 of an additional handle 20 for hand machine tools. It is hollow and made of plastic. It has a continuous hexagonal opening 4 parallel to the axial direction of the receiving opening 3 of the fastening head 2, which penetrates through the side walls 5, 6.
  • the holding part 1 has an opening 7 above the opening 4.
  • the side walls 5, 6 have grooves 8, 9 in a vertical extension below the opening 4, in which pins 10, 11 of a lever are guided (see FIG. 2).
  • This carries on its upper side facing the opening 4 a toothing 13 which is transverse to the axial direction of the opening 4 and which corresponds to a toothing in the holding part of an additional device (not shown) which can be inserted into the opening 4.
  • the lever 12 has support pins 14, 15 with resilient extensions 16, 17 at the ends. Below the support pins 14, 15, the lever 12 is tapered to form a handle part 18.
  • control slots 21, 22 are formed in the side walls 5, 6 with an approximately circular-arc-shaped section 23 and an adjoining section 24 deviating from the circular-arc line to the outside.
  • the section 23 is a circular-arc section with one opposite the axis the pin 10, 11 slightly to the right, ie Center point offset in the direction of receiving opening 3, approximately the center point 25.
  • the grip part 18 is tapered so that the support pins 14, 15 in the control slots 21, 22 are given a wide support in order to be able to better derive the clamping force required in the teeth 13.
  • the operation of the holding part 1 for loosening and tightening an additional device is very simple and convenient.
  • the lever 12 is simply pressed on the handle part 18 with a finger in the direction of the additional handle 20 without the hand having to be released from the handle.
  • the support pins 14, 15 reach the section 24 and the pins 10, 11 move along the grooves 8, 9 away from the opening 4, so that this is completely released.
  • the lever 12 remains in the region of the section 24 of the slots 21, 22 even after the operating finger has been removed.
  • the additional device is inserted into the opening 4 or, in the case of a depth stop, moved into the correct position corresponding to the desired drilling depth. Then the lever 12 is also pushed back again with a single finger until the toothing 13 bears firmly on the additional device. So that this is clamped in place.
  • the support pins 14, 15 remain in the circular arc due to self-locking Section 23 of the control slots 21, 22 at a specific point, which depends on the tolerances, especially of the hexagon socket of the additional device.
  • the lever 12 is then more or less perpendicular, but is itself inhibited at every point due to the slight slope in section 23. Retensioning is also possible at any time.
  • the holding part 1 can also be arranged directly on the housing of the handheld power tool or connected in one piece to the housing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling And Boring (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Devices For Opening Bottles Or Cans (AREA)
  • Jigs For Machine Tools (AREA)

Abstract

A mounting (1) for accessory units such as bit stops or the like to be mounted on the side of a hand machine-tool has an opening (4) and a locking lever (12) which constricts the opening (4). The lever (12) has at its end opposite the opening a toothing (13) and in its middle lateral support pegs (14, 15) inserted in circular arc shaped guiding slots (21, 22) with sections (24) that deviate outwardly from the circular arc line. The lever (12) is automatically locked in the guiding slots (21, 22). A spring can be totally dispensed with. The lever (12) is easy and handy to use and needs not to be held in the hand in its unlocking position. The construction of the whole mounting exclusively of plastic is very economic.

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einem Halteteil zur seitlichen Anbringung an eine Handwerkzeugmaschine nach der Gattung des Hauptanspruchs. In EP-A-O 132 593 sind an Zusatzhandgriffen angeordnete Halterungen mit federbelasteten Drückelementen zum Halten und Lösen eines Tiefenanschlags beschrieben worden. Die Anbringung anderer Zusatzgeräte wie Absaugvorrichtungen, Bohrwinkelmesser usw. ist sehr umständlich, weil die Drückelemente so ungünstig angeordnet sind, daß sie dann nicht ohne weiteres bedient werden können. Ein weiterer Nachteil ist der, daß die Drückelemente beim Vorgang des Einsetzens oder Verstellens des Tiefenanschlags ständig von Hand niedergedrückt werden müssen und diese Hand damit nicht mehr frei ist. Bei dem Ausführungsbeispiel mit dem Hebel ist darüber hinaus ungünstig, daß bei starker Beanspruchung (z.B. Schlagbetrieb) die geriffelte Andrückfläche außer Eingriff kommen kann bzw. die Feder sehr stark bemessen werden muß, was die Bedienung erschwert.The invention relates to a holding part for lateral attachment to a hand tool according to the preamble of the main claim. In EP-A-O 132 593, mounts arranged on additional handles with spring-loaded pressing elements for holding and releasing a depth stop have been described. The attachment of other additional devices such as suction devices, drilling angle meters, etc. is very cumbersome because the pressing elements are so unfavorably arranged that they cannot be easily operated. Another disadvantage is that the pressing elements have to be constantly pressed down by hand during the process of inserting or adjusting the depth stop, and this hand is therefore no longer free. In the embodiment with the lever, it is also unfavorable that the grooved pressing surface can disengage or the spring must be dimensioned very heavily in the case of heavy use (e.g. impact operation), which makes operation more difficult.

Vorteile der ErfindungAdvantages of the invention

Das erfindungsgemäße Halteteil mit den kennzeichnenden Merkmalen des Hauptanspruchs hat demgegenüber den vorteil, daß das Griffende des Verriegelungshebels jederzeit frei zugänglich ist, auch wenn in das Halteteil sich seitlich an diesem erstreckende Zusatzgeräte eingesetzt sind. Die Bedienung ist sehr einfach und komfortabel mit einem Finger möglich. Nach Öffnen der Verriegelung verbleibt der Hebel wegen der fehlenden Feder auch dann in Öffnungsstellung, wenn der Finger bzw. die Hand weggenommen wird. So hat die Bedienungsperson beide Hände frei zum Einführen, Herausnehmen oder Einstellen des Zusatzgerätes (z.B. Tiefenanschlag). In Verriegelungsstellung verbleibt der Hebel selbsthemmend in seiner Position auf der Kreisbogenbahn. Auch bei Schlagbohr- oder Hammerbetrieb löst sich die Verriegelung nicht. Zusätzliche Sicherheit bietet die geringe Steigung der Kreisbogenbahn, so daß auch bei kleinen Verschiebungen des Hebels die Verzahnung immer noch in Eingriff mit dem zusatzgerät bleibt. Das gesamte Halteteil samt Hebel ist vollständig in Kunststoff herstellbar und damit kostengünstig. Außerdem ist der Hebel sehr leicht mit einem Griff zu montieren.The holding part according to the invention with the characterizing features of the main claim has the advantage that the handle end of the locking lever is freely accessible at all times, even if additional devices are inserted laterally into the holding part. Operation is very simple and convenient with one finger. After opening the lock, the lever remains in the open position due to the missing spring even when the finger or hand is removed. This gives the operator both hands free to insert, remove or adjust the additional device (e.g. depth stop). In the locked position, the lever remains self-locking in its position on the circular arc. The lock does not release even in hammer drill or hammer operation. The low gradient of the circular arc path offers additional security, so that even with small displacements of the lever, the toothing still remains in engagement with the additional device. The entire holding part including the lever can be produced entirely in plastic and is therefore inexpensive. In addition, the lever is very easy to assemble with a handle.

Zeichnungdrawing

Ein Ausführungsbeispiel des Halteteils ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen Figur 1 einen Zusatzhandgriff mit Halteteil in Querschnitt und Figur 2 einen Schnitt gemäß Linie A-A in Figur 1.An embodiment of the holding part is shown in the drawing and explained in more detail in the following description. FIG. 1 shows an additional handle with a holding part in cross section and FIG. 2 shows a section along line A-A in FIG. 1.

Beschreibung des AusführungsbeispielesDescription of the embodiment

Das Halteteil 1 ist an dem Befestigungskopf 2 eines Zusatzhandgriffs 20 für Handwerkzeugmaschinen seitlich angeordnet. Sie ist hohl ausgebildet und besteht aus Kunststoff. Sie weist parallel zur Achsrichtung der Aufnahmeöffnung 3 des Befestigungskopfes 2 eine durchgehende sechskantige Durchbrechung 4 auf, die die Seitenwände 5, 6 durchgreift. Oberhalb der Durchbrechung 4 hat das Halteteil 1 einen Durchbruch 7. Die Seitenwände 5, 6 weisen unterhalb der Durchbrechung 4 in senkrechter Erstreckung Nuten 8, 9 auf, in denen Zapfen 10, 11 eines Hebels geführt sind (siehe Figur 2). Dieser trägt an seiner oberen, der Durchbrechung 4 zugewandten Seite eine quer zur Achsrichtung der Durchbrechung 4 stehende Zahnung 13, die mit einer Zahnung im Halteteil eines nicht dargestellten, in die Durchbrechung 4 einsteckbaren Zusatzgeräts korrespondiert.The holding part 1 is arranged laterally on the fastening head 2 of an additional handle 20 for hand machine tools. It is hollow and made of plastic. It has a continuous hexagonal opening 4 parallel to the axial direction of the receiving opening 3 of the fastening head 2, which penetrates through the side walls 5, 6. The holding part 1 has an opening 7 above the opening 4. The side walls 5, 6 have grooves 8, 9 in a vertical extension below the opening 4, in which pins 10, 11 of a lever are guided (see FIG. 2). This carries on its upper side facing the opening 4 a toothing 13 which is transverse to the axial direction of the opening 4 and which corresponds to a toothing in the holding part of an additional device (not shown) which can be inserted into the opening 4.

Im Mittelbereich weist der Hebel 12 Abstützzapfen 14, 15 mit elastisch federnden Fortsätzen 16, 17 an den Enden auf. Unterhalb der Abstützzapfen 14, 15 ist der Hebel 12 zu einem Griffteil 18 verjüngt. Zur Führung der Abstützzapfen 14, 15 sind in den Seitenwänden 5, 6 Steuerschlitze 21, 22 ausgebildet mit einem etwa kreisbogenförmigen Abschnitt 23 und einem daran anschließenden von der Kreisbogenlinie nach außen hin abweichenden Abschnitt 24. Der Abschnitt 23 ist ein Kreisbogenabschnitt mit einem gegenüber der Achse der Zapfen 10, 11 leicht nach rechts, d.h. in Richtung Aufnahmeöffnung 3 versetzten Mittelpunkt, etwa dem Mittelpunkt 25. Das Griffteil 18 ist verjüngt, damit die Abstützzapfen 14, 15 in den Steuerschlitzen 21, 22 eine breite Auflage erhalten, um die in der Zahnung 13 erforderliche Klemmkraft besser ableiten zu können.In the central region, the lever 12 has support pins 14, 15 with resilient extensions 16, 17 at the ends. Below the support pins 14, 15, the lever 12 is tapered to form a handle part 18. To guide the support pins 14, 15, control slots 21, 22 are formed in the side walls 5, 6 with an approximately circular-arc-shaped section 23 and an adjoining section 24 deviating from the circular-arc line to the outside. The section 23 is a circular-arc section with one opposite the axis the pin 10, 11 slightly to the right, ie Center point offset in the direction of receiving opening 3, approximately the center point 25. The grip part 18 is tapered so that the support pins 14, 15 in the control slots 21, 22 are given a wide support in order to be able to better derive the clamping force required in the teeth 13.

Die Montage des Hebels 12 geschieht ganz einfach von oben durch den Durchbruch 7 in das Halteteil 1. Beim Abwärtsschieben der Abstützzapfen 14,15 entlang den Nuten 8, 9 weichen die elastischen Fortsätze 16, 17 nach innen zurück. In den Schlitzen 21, 22 spreizen sie sich wieder, womit der Hebel 12 unverlierbar in dem Halteteil 1 festgehalten ist.The assembly of the lever 12 is done simply from above through the opening 7 in the holding part 1. When pushing down the support pins 14, 15 along the grooves 8, 9, the elastic extensions 16, 17 move back inwards. In the slots 21, 22 they spread again, so that the lever 12 is captively held in the holding part 1.

Die Bedienung des Halteteils 1 zum Lösen und Festspannen eines Zusatzgeräts ist sehr einfach und komfortabel. Der Hebel 12 wird am Griffteil 18 mit einem Finger einfach in Richtung Zusatzhandgriff 20 gedrückt, ohne daß die Hand von dem Griff gelöst werden muß. Dabei gelangen die Abstützzapfen 14, 15 in den Abschnitt 24 und die Zapfen 10, 11 bewegen sich entlang der Nuten 8, 9 von der Durchbrechung 4 weg, so daß diese vollständig freigegeben wird. Der Hebel 12 verharrt auch nach Wegnahme des Bedienungsfingers im Bereich des Abschnitts 24 der Schlitze 21, 22.The operation of the holding part 1 for loosening and tightening an additional device is very simple and convenient. The lever 12 is simply pressed on the handle part 18 with a finger in the direction of the additional handle 20 without the hand having to be released from the handle. The support pins 14, 15 reach the section 24 and the pins 10, 11 move along the grooves 8, 9 away from the opening 4, so that this is completely released. The lever 12 remains in the region of the section 24 of the slots 21, 22 even after the operating finger has been removed.

Nun wird das Zusatzgerät in die Durchbrechung 4 eingeschoben bzw. im Fall eines Tiefenanschlags in die richtige, der gewünschten Bohrtiefe entsprechende Position verschoben. Anschließend wird ebenfalls mit einem einzigen Finger der Hebel 12 wieder zurückgeschoben bis die Verzahnung 13 fest an dem Zusatzgerät anliegt. Damit ist dieses in seiner Lage festgeklemmt. Die Abstützzapfen 14, 15 verharren aufgrund von Selbsthemmung in dem kreisbogenförmigen Abschnitt 23 der Steuerschlitze 21, 22 an einer bestimmten Stelle, die von den Toleranzen vor allem des Einstecksechskants des Zusatzgeräts abhängt. Der Hebel 12 steht dann mehr oder weniger senkrecht, ist aber aufgrund der geringen Steigung im Abschnitt 23 an jeder Stelle selbst gehemmt. Damit ist auch jederzeit ein Nachspannen möglich.Now the additional device is inserted into the opening 4 or, in the case of a depth stop, moved into the correct position corresponding to the desired drilling depth. Then the lever 12 is also pushed back again with a single finger until the toothing 13 bears firmly on the additional device. So that this is clamped in place. The support pins 14, 15 remain in the circular arc due to self-locking Section 23 of the control slots 21, 22 at a specific point, which depends on the tolerances, especially of the hexagon socket of the additional device. The lever 12 is then more or less perpendicular, but is itself inhibited at every point due to the slight slope in section 23. Retensioning is also possible at any time.

Statt an einem Zusatzhandgriff 20, kann das Halteteil 1 auch direkt am Gehäuse der Handwerkzeugmaschine angeordnet oder einstückig mit dem Gehäuse verbunden sein.Instead of an additional handle 20, the holding part 1 can also be arranged directly on the housing of the handheld power tool or connected in one piece to the housing.

Claims (4)

1. Holding part (1) for mounting attachments such as a depth stop, suction device, drilling protractor, etc., which holding part (1) can be fixed laterally to a powered hand tool and has an aperture (4) which is parallel to the axial direction of the tool holder and in which the attachment can be locked by a holding element (12), characterized in that the holding element is a lever (12) rotatable about pins (10, 11) disposed transversely to its longitudinal extent, in that the pins (10, 11) are mounted in a longitudinally displaceable manner in grooves (8, 9) and in that the lever (12) carries supporting pins (14, 15) which engage into control slots (21, 22) in the side walls (5, 6) of the holding device (8) [sic] so that the lever (12), when pivoting about the pins (10, 11), approaches or moves away from the aperture (4) as a result of which the attachment mounted in the aperture (4) is clamped in place or released.
2. Holding part according to Claim 1, characterized in that the end of the lever (12) facing the aperture (4) is provided with a tooth system (13) which runs transversely to the orientation of the aperture (4).
3. Holding part according to Claim 1 or 2, characterized in that the supporting pins (14, 15) have extensions (16, 17) which can give way flexibly inwards for fitting the lever (12).
4. Holding part according to one of the preceding claims, characterized in that the side walls (5, 6) of the holding part (1) are widened below the control slots (21, 22) in order to enlarge the bearing surface for the supporting pins (14, 15).
EP19870904505 1986-08-09 1987-07-18 Mounting for accessory units Expired - Lifetime EP0321463B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19868621430 DE8621430U1 (en) 1986-08-09 1986-08-09 Holder for additional device
DE8621430U 1986-08-09

Publications (2)

Publication Number Publication Date
EP0321463A1 EP0321463A1 (en) 1989-06-28
EP0321463B1 true EP0321463B1 (en) 1991-01-30

Family

ID=6797303

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870904505 Expired - Lifetime EP0321463B1 (en) 1986-08-09 1987-07-18 Mounting for accessory units

Country Status (4)

Country Link
EP (1) EP0321463B1 (en)
JP (1) JP2545567B2 (en)
DE (2) DE8621430U1 (en)
WO (1) WO1988000870A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4430786A1 (en) * 1994-08-30 1996-03-07 Wolf Geraete Gmbh Vertrieb Guide handle for garden tools
US6835030B2 (en) * 2002-06-04 2004-12-28 Credo Technology Corporation Power tool accessory system
DE102006055014A1 (en) * 2006-11-22 2008-05-29 Robert Bosch Gmbh Additional handle with eccentric clamping lever for a hand tool
DE102009047705B4 (en) * 2009-12-09 2014-02-13 Hilti Aktiengesellschaft auxiliary handle
DE102010005535A1 (en) * 2010-01-23 2011-09-08 Metabowerke Gmbh Locking device for locking a depth stop rod, additional handle and hand-held machine tool
DE102013213284A1 (en) * 2012-08-03 2014-02-06 Robert Bosch Gmbh Hand tool machine system for use with handle device and fastening device, has receiving unit, which is provided partly to releasable coupling of handle device and fastening device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7613952U1 (en) * 1976-05-03 1976-09-02 Hilti Ag, Schaan (Liechtenstein) DRILLING MACHINE WITH DEPTH STOP
DE2832429A1 (en) * 1978-07-24 1980-02-14 Hilti Ag DRILLING MACHINE WITH DEPTH STOP
DE2918586A1 (en) * 1979-05-09 1980-11-13 Duss Maschf DRILLING MACHINE WITH DEPTH
GB2050881B (en) * 1979-06-19 1983-01-06 Kango Electric Hammers Ltd Depth stop for a drilling tool
DE8006965U1 (en) * 1980-03-14 1981-08-27 Robert Bosch Gmbh, 7000 Stuttgart ADDITIONAL HANDLE FOR A HAND MACHINE TOOL
DE3126245C2 (en) * 1981-07-03 1993-10-07 Bosch Gmbh Robert Profile bar for use as a drilling depth stop on hand machine tools
DE8318425U1 (en) * 1983-06-25 1983-10-27 C. & E. Fein Gmbh & Co, 7000 Stuttgart ADDITIONAL HANDLE FOR HANDLED TOOLS

Also Published As

Publication number Publication date
EP0321463A1 (en) 1989-06-28
JP2545567B2 (en) 1996-10-23
DE3767887D1 (en) 1991-03-07
JPH01503527A (en) 1989-11-30
WO1988000870A1 (en) 1988-02-11
DE8621430U1 (en) 1987-12-10

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