EP0836886A1 - Switching flap for deactivating the cutting device of a document shredder an the like apparatus - Google Patents

Switching flap for deactivating the cutting device of a document shredder an the like apparatus Download PDF

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Publication number
EP0836886A1
EP0836886A1 EP97117388A EP97117388A EP0836886A1 EP 0836886 A1 EP0836886 A1 EP 0836886A1 EP 97117388 A EP97117388 A EP 97117388A EP 97117388 A EP97117388 A EP 97117388A EP 0836886 A1 EP0836886 A1 EP 0836886A1
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EP
European Patent Office
Prior art keywords
switching
housing
flap
underside
switching flap
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
EP97117388A
Other languages
German (de)
French (fr)
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EP0836886B1 (en
Inventor
Hermann Schwelling
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Individual
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Individual
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Publication date
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Publication of EP0836886A1 publication Critical patent/EP0836886A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/0007—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating documents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/0007—Disintegrating by knives or other cutting or tearing members which chop material into fragments specially adapted for disintegrating documents
    • B02C2018/0023—Switching devices

Definitions

  • the invention relates to a switching flap according to the preamble of claim 1.
  • Switching flaps integrated in the cutting unit housing on the underside thereof for the purpose of stopping the drive when the clippings container is full are known per se and have been designed so that their movement is transmitted via more or less complex lever and linkage parts including associated bearings to a limit switch connected to the drive control.
  • the main disadvantages of these known designs are, above all, a high level of structural production and assembly work combined with a relatively high susceptibility to malfunction, due to the rods, levers, etc.
  • the present invention therefore has the task posed, a structurally and assembly extremely simple Flap design to create the practical does not require any bearings and is absolutely insensitive to faults and thus works reliably.
  • FIGS. 1 and 2 show first explanatory of the basic structure of the new version in that that on the underside 2a of a cutter housing 2 to the side of the clippings outlet "SP" a movable, on the motor limit switch "E” acting flap 1 is arranged.
  • the pluggable connection points as non-positive Snap connections 3 and positive Guide pin 4 on the lower edge of the switching flap 1b sit, the housing underside 2a corresponding to it Has recesses 5 and 6 and the immediate above the connectors 3, 4 and 5, 6 itself extending parallel to the bottom of the housing 2a resilient joint point as a so-called bending groove "B" in the Material thickness "D" is introduced.
  • the restoring force the switching flap 1 is therefore about the elasticity and geometry of the material concerned, so that neither additional reset elements nor bearings or control levers including fault-prone transmission linkages are required for the new solution.
  • switching flap 1 makes sense that switching cams "S” and limiting rib “R” on the same side of the valve surface 1a and sit above the bending groove "B", what a rational and therefore inexpensive manufacture the switching flap 1 with bending groove "B", switching cams "S”, Rib “R” and pluggable connection points 3 and 4 as a one-piece molded plastic part without mechanical Postprocessing enabled.
  • the centering pin still shown in the drawing 7 and 8 on the housing sides 2d serve together the housing flange 2e for fixing the cutting unit housing 2 on a suitably trained, clippings not shown here.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)

Abstract

The switch flap (1) is fitted into the housing underside (2a) by corresponding connecting points (3-6). A spring hinge point is located directly above the connecting points and extends over its whole length. The flap on its side facing away from the shredded material outlet gap has a rib (S) acting as a cam for operation of the limit switch (E) effecting stopping of the drive. The connecting points are formed as force-locked snap connections (3) and form-locked guide pins (4) on the lower edge.

Description

Die Erfindung bezieht sich auf eine Schaltklappe nach dem Oberbegriff des Patentanspruches 1.The invention relates to a switching flap according to the preamble of claim 1.

In das Schneidwerksgehäuse an dessen Unterseite integrierte Schaltklappen zum Zwecke der Antriebsstillsetzung bei gefülltem Schnittgutsammelbehälter sind an sich bekannt und bislang derart ausgebildet, daß ihre Bewegung über mehr oder minder aufwendige Hebel- und Gestängeteile samt zugehörigen Lagerungen auf einer mit der Antriebssteuerung verbundenen Endschalter übertragen wird.
Die Hauptnachteile dieser bekannten Ausführungen liegen dabei vor allem in einem hohen baulichen Fertigungs- und Monageaufwand verbunden mit relativ großer Störanfälligkeit, bedingt durch die Stangen, Hebel etc.Switching flaps integrated in the cutting unit housing on the underside thereof for the purpose of stopping the drive when the clippings container is full are known per se and have been designed so that their movement is transmitted via more or less complex lever and linkage parts including associated bearings to a limit switch connected to the drive control.
The main disadvantages of these known designs are, above all, a high level of structural production and assembly work combined with a relatively high susceptibility to malfunction, due to the rods, levers, etc.

Die vorliegende Erfindung hat sich daher die Aufgabe gestellt, eine baulich und montagemäßig äußerst einfache Schaltklappenausführung zu schaffen, die praktisch ohne Lagerungen auskommt und absolut störungsunanfällig und somit betriebssicher arbeitet.The present invention therefore has the task posed, a structurally and assembly extremely simple Flap design to create the practical does not require any bearings and is absolutely insensitive to faults and thus works reliably.

Gelöst wird diese Aufgabe durch die im Patentanspruch 1 angegebenen baulichen sowie anordnungstechnischen Mittel und Maßnahmen; die Unteransprüche enthalten hierzu vorteilhafte Weiterbildungen und Ausgestaltungsmerkmale, die zudem anhand von Zeichnungen im folgenden noch näher erläutert werden. This problem is solved by the in claim 1 specified structural and arrangement technology Means and measures; which contain subclaims advantageous further developments and design features, which also based on drawings below to be explained in more detail.

Es zeigen:

Fig. 1
in perspektivischer Darstellung ein Aktenvernichter-Schneidwerksgehäuse mit der neuen Schaltklappe von unten betrachtet,
Fig. 2
die gleiche Ansicht mit noch nicht eingesetzter Schaltklappe,
Fig. 3
die neue Schaltklappe als Einzelteil in gegenüber Fig. 1 vergrößertem Maßstab in Ansicht,
Fig. 4
eine Draufsicht zu Fig. 3 und
Fig. 5
eine Schnittdarstellung zu Fig. 3 gemäß der dortigen Linie AB.
Show it:
Fig. 1
a perspective view of a shredder cutting unit housing with the new switching flap viewed from below,
Fig. 2
the same view with the switching flap not yet inserted,
Fig. 3
the new switching flap as a single part in an enlarged scale compared to FIG. 1 in view,
Fig. 4
a plan view of Fig. 3 and
Fig. 5
a sectional view of FIG. 3 along the line AB there.

Die Darstellungen in den Fig. 1 und 2 zeigen zunächst erläuternd den Grundaufbau der neuen Ausführung dahingehend, daß auf der Unterseite 2a eines Schneidwerksgehäuses 2 seitlich neben dem Schnittgutaustrittsspalt "SP" eine bewegliche, auf den Motorendschalter "E" wirkende Schaltklappe 1 angeordnet ist. The representations in FIGS. 1 and 2 show first explanatory of the basic structure of the new version in that that on the underside 2a of a cutter housing 2 to the side of the clippings outlet "SP" a movable, on the motor limit switch "E" acting flap 1 is arranged.

Neu und zur Lösung der mit der Erfindung gestellten Aufgabe dienlich ist hierbei nun, daß die Schaltklappe 1 über entsprechende Anschlußstellen 3, 4 und 5, 6 in die Gehäuseunterseite 2a eingesteckt ist, unmittelbar oberhalb der Steckverbindungen 3, 4 und 5, 6 eine sich über ihre ganze Länge 4 erstreckende federnde Gelenkstelle "B" aufweist und auf ihrer dem Schnittgutaustrittsspalt "SP" abgewandten Seite 1a eine als Schaltnocken für die Betätigung des die Antriebsstillsetzung bewirkenden Endschalters "E" dienenden Rippe "S" o. dgl. trägt.New and to solve the problems posed by the invention The task here is now that the switching flap 1 via appropriate connection points 3, 4 and 5, 6 inserted into the bottom of the housing 2a is, directly above the plug connections 3, 4 and 5, 6 an extending over its entire length 4 has resilient joint point "B" and on their cutting gap "SP" facing away Page 1a one as switch cams for actuation of the limit switch causing the drive to stop "E" serving rib "S" or the like.

In spezieller baulicher Ausgestaltung ist dabei vorgesehen, daß die steckbaren Anschlußstellen als kraftschlüssige Schnappverbindungen 3 und formschlüssige Führungszapfen 4 an der Schaltklappenunterkante 1b sitzen, die Gehäuseunterseite 2a dazu korrespondierende Aussparungen 5 und 6 aufweist und die unmittelbar oberhalb der Steckverbindungen 3, 4 und 5, 6 sich parallel zur Gehäuseunterseite 2a erstreckende federnde Gelenkstelle als sog. Biegenut "B" in die Materialdicke "D" eingebracht ist. Die Rückstellkraft der Schaltklappe 1 wird also über die Elastizität und Geometrie des betreffenden Werkstoffes erzielt, so daß weder zusätzliche Rückstellelemente noch Lagerungen oder Stellhebel samt störanfälligen übertragungsgestängen für die neue Lösung erforderlich sind.In a special structural design, that the pluggable connection points as non-positive Snap connections 3 and positive Guide pin 4 on the lower edge of the switching flap 1b sit, the housing underside 2a corresponding to it Has recesses 5 and 6 and the immediate above the connectors 3, 4 and 5, 6 itself extending parallel to the bottom of the housing 2a resilient joint point as a so-called bending groove "B" in the Material thickness "D" is introduced. The restoring force the switching flap 1 is therefore about the elasticity and geometry of the material concerned, so that neither additional reset elements nor bearings or control levers including fault-prone transmission linkages are required for the new solution.

In spezieller und vorteilhafter baulicher Ausgestaltung ist weiterhin vorgesehen, daß der Schaltnocken "S'" durch eine Aussparung 2b an der Gehäuseunterseite 2a auf den Endschalter "E" wirkt und die Bewegung der Schaltklappe 1 in Richtung auf den Endschalter "E" durch eine sich an die Oberfläche 2c der Gehäuseunterseite 2a in ihrer Endstellung anliegende weitere Rippe "R" begrenzt ist; hierdurch entfällt unnötiger Druck auf den Endschalter "E" und seine Befestigungselemente.In a special and advantageous structural design it is also provided that the switch cam "S '" through a recess 2b on the underside of the housing 2a acts on the limit switch "E" and the movement of the Switch flap 1 in the direction of the limit switch "E" due to the surface 2c of the underside of the housing 2a further in their final position Rib "R" is limited; this eliminates unnecessary Pressure on the limit switch "E" and its fasteners.

Weiterhin ist es bei der neuen Schaltklappe 1 noch sinnvoll, daß Schaltnocken "S" und Begrenzungsrippe "R" auf der gleichen Seite der Schaltklappenoberfläche 1a sowie oberhalb der Biegenut "B" sitzen, was eine rationelle und somit preisgünstige Herstellung der Schaltklappe 1 samt Biegenut "B", Schaltnocken "S", Rippe "R" und steckbaren Anschlußstellen 3 und 4 als einstückiges Kunststoffformteil ohne mechanische Nachbearbeitung ermöglicht.Furthermore, it is still with the new switching flap 1 makes sense that switching cams "S" and limiting rib "R" on the same side of the valve surface 1a and sit above the bending groove "B", what a rational and therefore inexpensive manufacture the switching flap 1 with bending groove "B", switching cams "S", Rib "R" and pluggable connection points 3 and 4 as a one-piece molded plastic part without mechanical Postprocessing enabled.

Die zeichnerisch weiterhin noch dargestellten Zentrierzapfen 7 und 8 an den Gehäuseseiten 2d dienen samt dem Gehäuseflansch 2e zum Festsetzen des Schneidwerksgehäuses 2 auf einem entsprechend ausgebildeten, hier nicht dargestellten Schnittgutsammelbehälter. The centering pin still shown in the drawing 7 and 8 on the housing sides 2d serve together the housing flange 2e for fixing the cutting unit housing 2 on a suitably trained, clippings not shown here.

BEZUGSZEICHENLISTEREFERENCE SIGN LIST

11
SchaltklappeSwitching flap
1a1a
Oberfläche (auf der dem Schnittgutaustrittsspalt "SP" abgewandten Seite)Surface (on the clippings exit gap "SP" side facing away)
1b1b
UnterkanteLower edge
22nd
SchneidwerksgehäuseHeader housing
2a2a
GehäuseunterseiteBottom of the housing
2a'2a '
GehäuseoberseiteTop of the housing
2b2 B
AussparungRecess
2c2c
Oberfläche der GehäuseunterseiteSurface of the bottom of the housing
2d2d
GehäuseseiteHousing side
2e2e
GehäuseflanschHousing flange
33rd
SchnappverbinderSnap connector
44th
FührungszapfenGuide pin
55
Aussparung für SchnappverbinderCut-out for snap connectors
66
Aussparung für FührungszapfenCutout for guide pin
77
ZentrierzapfenCentering pin
88th
ZentrierzapfenCentering pin
BB
BiegenutBending groove
DD
Materialdicke der SchaltklappeMaterial thickness of the switching flap
EE
EndschalterLimit switch
LL
Länge der SchaltklappeLength of the switch flap
P1 P 1
Einsteckrichtung der KlappeFlap insertion direction
P2 P 2
Schwenkrichtung der KlappeSwing direction of the flap
RR
AnschlagrippeStop rib
SS
SchaltnockenSwitch cams
SPSP
SchnittgutaustrittsspaltCuttings exit gap

Claims (5)

Schaltklappe für die Antriebs-Stillsetzung der Schneidwerke von Aktenvernichtern o.ä. Geräten, wobei das jeweilige Schneidwerk in einem auf einem Schnittgutsammelbehälter aufsetzbaren Gehäuse untergebracht und die Schaltklappe an der Gehäuseunterseite im Bereich seitlich des Schnittgutaustrittsspaltes angeordnet ist,
dadurch gekennzeichnet, daß die Schaltklappe (1) über entsprechende Anschlußstellen (3, 4 und 5,6) in die Gehäuseunterseite (2a) eingesteckt ist, unmittelbar oberhalb der Steckverbindungen (3, 4 und 5,6) eine sich über ihre ganze Länge (4) erstreckende federnde Gelenkstelle (B) aufweist, und auf ihrer dem Schnittgutaustrittsspalt (SP) abgewandten Seite (1a) eine als Schaltnocken für die Betätigung des die Antriebsstillsetzung bewirkenden Endschalters (E) dienende Rippe (S) o.dgl. trägt. Switch flap for stopping the drive of the shredders of document shredders or the like Devices, the respective cutting unit being accommodated in a housing which can be placed on a clippings collecting container and the switching flap is arranged on the underside of the housing in the area to the side of the clippings outlet gap,
characterized, that the switching flap (1) is inserted into the underside (2a) of the housing via corresponding connection points (3, 4 and 5,6), immediately above the plug connections (3, 4 and 5,6) has a resilient articulation point (B) extending over its entire length (4), and on its side (1a) facing away from the clippings exit gap (SP), a rib (S) or the like serving as switching cams for actuating the limit switch (E) causing the drive to be stopped. wearing. Schaltklappe nach Anspruch 1,
dadurch gekennzeichnet, daß die steckbaren Anschlußstellen als kraftschlüssige Schnappverbindungen (3) und formschlüssige Führungszapfen (4) an der Schaltklappenunterkante (1b) sitzen, die Gehäuseunterseite (2a) dazu korrespondierende Aussparungen (5 und 6) aufweist, und die unmittelbar oberhalb der Steckverbindungen (3, 4 und 5, 6) sich parallel zur Gehäuseunterseite (2a) erstreckende, federnde Gelenkstelle als sog. Biegenut (B) in die Materialdicke (D) eingebracht ist. Switching flap according to claim 1,
characterized, that the pluggable connection points are seated on the lower edge of the switching flap (1b) as non-positive snap connections (3) and form-fitting guide pins (4), the housing underside (2a) has corresponding cutouts (5 and 6), and the resilient hinge point, which extends directly above the plug connections (3, 4 and 5, 6) and runs parallel to the underside of the housing (2a), is introduced into the material thickness (D) as a so-called bending groove (B). Schaltklappe nach den Ansprüchen 1 und 2,
dadurch gekennzeichnet, daß der Schaltnocken (S') durch eine Aussparung (2b) an der Gehäuseunterseite (2a) auf den Endschalter (E) wirkt und die Bewegung der Schaltklappe (1) in Richtung auf den Endschalter (E) durch eine sich an die Oberfläche (2c) der Gehäuseunterseite (2a) in ihrer Endstellung anliegende weitere Rippe (R) begrenzt ist. Switch flap according to claims 1 and 2,
characterized, that the switching cam (S ') acts through a recess (2b) on the underside of the housing (2a) on the limit switch (E) and the movement of the switching flap (1) in the direction of the limit switch (E) through a surface (2c ) of the housing underside (2a) in its end position adjacent rib (R) is limited. Schaltklappe nach einem oder mehreren der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß Schaltnocken (S) und Begrenzungsrippe (R) auf der gleichen Seite der Schaltklappenoberfläche (1a) sowie oberhalb der Biegenut (B) sitzen. Switching flap according to one or more of the preceding claims,
characterized, that switching cams (S) and limiting rib (R) sit on the same side of the switching flap surface (1a) and above the bending groove (B). Schaltklappe nach Anspruch 4,
gekennzeichnet durch Ausbildung der Schaltklappe (1) samt Biegenut (B), Schaltnocken (S), Rippe (R) und steckbaren Anschlußstellen (3 und 4) als einstückiges Kunststoffformteil ohne mechanische Nachbearbeitung. Switching flap according to claim 4,
marked by Design of the switching flap (1) including bending groove (B), switching cams (S), rib (R) and plug-in connection points (3 and 4) as a one-piece molded plastic part without mechanical finishing.
EP97117388A 1996-10-11 1997-10-08 Switching flap for deactivating the cutting device of a document shredder an the like apparatus Expired - Lifetime EP0836886B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19641934A DE19641934C2 (en) 1996-10-11 1996-10-11 Switch flap for stopping the cutting unit of document shredders and. devices
DE19641934 1996-10-11

Publications (2)

Publication Number Publication Date
EP0836886A1 true EP0836886A1 (en) 1998-04-22
EP0836886B1 EP0836886B1 (en) 2003-10-08

Family

ID=7808453

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97117388A Expired - Lifetime EP0836886B1 (en) 1996-10-11 1997-10-08 Switching flap for deactivating the cutting device of a document shredder an the like apparatus

Country Status (3)

Country Link
US (1) US5969310A (en)
EP (1) EP0836886B1 (en)
DE (2) DE19641934C2 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7025293B2 (en) * 2004-04-21 2006-04-11 Fellows Inc. Shredder with pivoting housing for the shredder mechanism
US7195185B2 (en) * 2004-11-02 2007-03-27 Fellowes, Inc. Shredder with separate waste opening
TWM314070U (en) * 2006-11-30 2007-06-21 Michilin Prosperity Co Ltd Safety plate for paper feeding of movable shredder machine
CN201002037Y (en) * 2006-12-28 2008-01-09 世庆实业股份有限公司 Shredder paper entrance touch-stop safety device
CN201002039Y (en) * 2007-01-11 2008-01-09 世庆实业股份有限公司 Shredder movable paper entrance blind flange
US7757985B2 (en) * 2007-06-27 2010-07-20 Aurora Office Equipment Co., Ltd. Safety shredder
CA2640979C (en) 2007-10-30 2011-03-29 Liangneng Chen Safety shredder
US7648089B2 (en) * 2007-11-28 2010-01-19 Michilin Prosperity Co., Ltd. Shredder safety interlock switch activation tab
US8028942B2 (en) 2008-08-01 2011-10-04 Fellowes, Inc. Bin full detection with light intensity sensing
CN101623664B (en) * 2009-07-31 2013-03-20 上海震旦办公设备有限公司 Safety protection device of paper inlet of paper shredder
DE102012100681B4 (en) 2012-01-27 2022-09-01 Hermann Schwelling Document shredder with turbo function
US8967510B2 (en) 2012-09-27 2015-03-03 Aurora Office Equipment Co., Ltd. Safety shredder
US9643190B2 (en) 2013-03-26 2017-05-09 Aurora Office Equipment Co., Ltd. Shanghai Safety shredder with bin-full device and time delay
US10639642B2 (en) * 2015-03-19 2020-05-05 Aurora Office Equipment Co., Ltd. Shanghai Shredder jam clear apparatus

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GB2138700A (en) * 1983-04-12 1984-10-31 Schleicher Co Feinwerktech Apparatus for comminuting materials such as documents
JPH081025A (en) * 1994-06-20 1996-01-09 Matsushita Electric Ind Co Ltd Shredder
DE29604761U1 (en) * 1996-03-14 1996-05-09 Schleicher & Co Int Document shredder

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US3867591A (en) * 1974-01-16 1975-02-18 Whirlpool Co One piece switch holder and foot operated hinge actuator for vacuum cleaner switch
JPS57152725U (en) * 1981-03-20 1982-09-25
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Publication number Priority date Publication date Assignee Title
GB2138700A (en) * 1983-04-12 1984-10-31 Schleicher Co Feinwerktech Apparatus for comminuting materials such as documents
JPH081025A (en) * 1994-06-20 1996-01-09 Matsushita Electric Ind Co Ltd Shredder
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Title
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Also Published As

Publication number Publication date
EP0836886B1 (en) 2003-10-08
DE59710829D1 (en) 2003-11-13
DE19641934A1 (en) 1998-04-16
US5969310A (en) 1999-10-19
DE19641934C2 (en) 1999-06-24

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