EP1043173B1 - Sharpener for soft pencil lead - Google Patents

Sharpener for soft pencil lead Download PDF

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Publication number
EP1043173B1
EP1043173B1 EP00101137A EP00101137A EP1043173B1 EP 1043173 B1 EP1043173 B1 EP 1043173B1 EP 00101137 A EP00101137 A EP 00101137A EP 00101137 A EP00101137 A EP 00101137A EP 1043173 B1 EP1043173 B1 EP 1043173B1
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EP
European Patent Office
Prior art keywords
free space
insert part
sharpener according
sharpener
guide channel
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
EP00101137A
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German (de)
French (fr)
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EP1043173A1 (en
Inventor
Fritz Dr. Lüttgens
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.)
KUM Ltd
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KUM Ltd
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Publication date
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Publication of EP1043173A1 publication Critical patent/EP1043173A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43LARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L23/00Sharpeners for pencils or leads
    • B43L23/08Sharpeners for pencils or leads in which the pencils or leads are sharpened mainly by rotational movement against cutting blades
    • B43L23/085Sharpeners for pencils or leads in which the pencils or leads are sharpened mainly by rotational movement against cutting blades one of the blades being used for shaping the writing point

Definitions

  • the invention relates to a sharpener for soft pencils with the features of the preamble of claim 1 (EP 0 872 356 B1).
  • the mine former is like a cleaning stick molded scraper tongue.
  • the cleaning stick flanks in a ready-to-use condition the tip housing snaps into a holder to the longitudinal axis of the guide channel approximately parallel direction such that the the scraper tongue formed with its free end essentially transverse to the longitudinal direction of the cleaning stick to the guide channel protrudes.
  • the scraping tongue formed on the cleaning stick stands with its free end into the free space in front of the guide channel.
  • the Holder of the cleaning stick with the towards the guide channel protruding scraping tongue is because of the long lever arm between the scraping tongue and snap holder of the cleaning stick and because of the Comparatively, scraping from the tip of the mine unstable.
  • 37 863 C1 is a sharpener for soft pencils with a barrel knife for a rounded shape of the mine tip is known, in which the barrel knife Is pivotable about a pivot point with respect to the housing body. This Arrangement is structurally complex.
  • the invention is based on the object, a sharpener of the beginning to provide the type mentioned with a mine former, which is easy on Pointed case is applicable and reliable without adverse leverage during the sharpening process against those acting on it from the mine tip Pressurization is supported by the housing body. After all, it should the mine former in a simple manner without any interference from him about acting deformation pressures perform its function. This task is solved by claim 1.
  • the mine former can be part of a compact and therefore less sensitive to damage Train the component. His solution and re-fixation on the housing body can be easily by the user accomplish according to claim 2 or 3. That is still due to the design promoted according to claim 4.
  • the loosening and reinserting of the insert part is thereby in a particularly simple manner without interference from the pointed knife possible.
  • This allows the releasable fixing connections (Claim 2 or 3) with tight fits or tight braces that are in the joining position ensure a safe position and thus a solution for your solution require more effort. It can act on the insert with the release pressure without the aid of a separate release tool an embodiment for example according to claim 9 and in particular in the Embodiment according to claim 10 are facilitated.
  • Claim 14 proposes an alternative for fixing the insert part to the housing body in front.
  • This proposal takes account of the fact that the Rule body molded from plastic is largely self-contained all around with comparatively thin-walled long and narrow side walls is equipped, whose lower end is designed as a wall edge, the Wall edges of all housing body sides lie in a common plane and between them a rugged body floor due to the functional design enclose between themselves.
  • the body bottom is in the regular, with the knife blade pointing upwards on a table surface or the like invisibly shielded.
  • This regular form of construction of the housing body of a one-piece injection molded from plastic Housing body is not only from design but also from injection molding Reasons common to thin walls of largely the same dimensions to ensure and therefore unsightly, but due to the spray technology Avoid sink marks.
  • the housing body itself does not need the proposed attachment fixation to be provided with additional fixation designs.
  • This also makes it possible existing sharpener, but not equipped with a mine former for soft pencils can be easily retrofitted with a lead former or equip.
  • This variant has the further advantage that the insert part with its fixing area attached to the housing end wall protrudes beyond the end wall, making it easy to handle for detaching the insert part from the sharpener housing.
  • the proposal according to claim 15 creates the basis for a color coding system, which distinguishes the contours of those designed as insert parts Mine former also considerably easier for the user. This allows the sharpener with a variety of different, designed like a kit Mine formers are significantly increased in their utility value.
  • the housing body 1 surrounds the insertion side 2 for the one to be pointed End facing the soft-lead pencil has an end in the direction of insertion 31 conically tapering guide channel 3, which for guiding the housing on the inside Essentially tapered end of a not shown Soft lead pen is used.
  • the housing 1 enters above the guide channel 3 screw-fixed pointed knife 4. This flanks the guide channel 3 in the area a side opening 33.
  • the guide channel 3 tapers in the direction of the pin cone receiving and positioned below the front end of the pointed knife 4 Free space 5 of the housing 1.
  • This free space 5 is in the case of Fig. 1 shown housing 1 in the direction of the longitudinal axis 11 of the guide channel 3 open on the back of the housing facing away from the guide channel 3 and in In the embodiment of FIG. 10 closed by a rear wall 9.
  • the pin not shown, is inside the guide channel 3 in the pointed direction (direction of rotation) 32 against the cutting edge 34 of the pointed knife 4 rotated.
  • the cutting edge 34 of the pointed knife 4 lifts a peeling chip from the tip of the soft lead pencil.
  • Insert part 7 as a mine former for fitting the tip of the mine into it.
  • Insert part 7 connects to free space 5 its rear end facing away from the guide channel 3.
  • he poses the completion of the guide channel 3 towards the rear of the housing 12 represents and carries the shape edge at its front end facing the guide channel 3 6 for scraping lead formation.
  • the shape edge 6 is from the mine of not shown, in the pointed direction 32 soft lead pencil from below applied upwards so that the scraping chips fall down. While thus the cutting edge of the pointed knife 4 with respect to the peeled chips is effective upwards (Fig. 1,10), the effectiveness of the mold edge 6 is directed of the insert part 7 with respect to FIGS. 1 and 10 downwards.
  • the insert part 7 by means of friction locking (jamming) or snapping in front of the outlet
  • the front end of the guide channel 3 is fixed in the free space 5.
  • the fixation inside of the free space 5 takes place by plugging on from below, that is to say from the underside of the housing 35 forth in the plug direction 8 on the two side sections of the rear wall of the housing 9.
  • the insert part 7 in the case of FIG. 1 contains the side sections the plug-in groove 10 encompassing the rear wall 9.
  • Insert part 7 For attaching or inserting the insert 7 from below, that is from The underside of the housing 35 serves in the insertion direction 8 in the free space 5, the pointed knife 4 as end stop.
  • the insert 7 extends over the entire width of the free space 5 and can therefore also be spread out in the free space 5.
  • the bottom 13 of the scraper rib 14 above with its shaped edge 6 Insert part 7 forms a bowl or tray-like support surface for the Soft-core chips.
  • insert 7 contains one projecting beyond the contour of the housing 1 upwards and / or to the rear Handling projection 15.
  • the handling projection 15 is on one the pointed knife 4 facing away from the insert 7 and stands in the case of the embodiment according to FIGS. 1 to 9 to the rear to the rear of the housing 12 beyond the housing body 1.
  • the insert 7 can also jammed between the side flanks 16, 17 of the free space 5 or between be clamped to these attached positioning means.
  • the free space 5 of the embodiment according to FIGS. 10 to 19 of the sharpener is after closed at the rear by the rear wall 9 of the housing.
  • the pointed knife forms 4 in turn an end stop for the insertion movement of the insert part 18.
  • the insert part 18 also has an up here over the housing body 1 protruding handling projection 19.
  • the insert part 20 of the embodiment according to FIGS. 20 to 23 differs of the insert parts 7 and 18 described with reference to FIGS. 1 to 19 in several ways Respect. It is initially at different intervals 21 from the end of the Guide channel 3 can be positioned or clamped. In Fig. 20, e.g. B. the possible positions A and B are shown.
  • the free space 5 is shown schematically in perspective as a U with the two U legs 23 and 24.
  • stepless longitudinal guides 26 is provided for insert parts 27, one of which is optional at both ends Form edge 28 which can be implemented in the use position for the mine formation.
  • FIG. 23 there is a longitudinal guide 26 for the insert part 27 snap fixing provided in the different fixing positions A and B. possible between the form-fitting parts 29, 30.

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  • Drawing Aids And Blackboards (AREA)

Description

Die Erfindung betrifft einen Spitzer für Weichstifte mit den Merkmalen des Oberbegriffs des Anspruches 1 (EP 0 872 356 B1).The invention relates to a sharpener for soft pencils with the features of the preamble of claim 1 (EP 0 872 356 B1).

Bei dem vorbekannten Spitzer ist der Minenformer als an ein Reinigungsstäbchen angeformte Schabezunge ausgebildet. In spitzbereitem Zustand flankiert das Reinigungsstäbchen innerhalb einer Halterung verschnappt das Spitzergehäuse in zur Längsachse des Führungskanals etwa paralleler Richtung derart, dass die an das Reinigungsstäbchen angeformte Schabezunge mit ihrem freien Ende im Wesentlichen quer zur Längsrichtung des Reinigungsstäbchens zum Führungskanal hin absteht. Die an das Reinigungsstäbchen angeformte Schabezunge steht mit ihrem freien Ende in den vor dem Führungskanal liegenden Freiraum hinein. Die Halterung des Reinigungsstäbchens mit der in Richtung auf den Führungskanal vorstehenden Schabezunge ist wegen des langen Hebelarmes zwischen Schabezunge und Schnapphalterung des Reinigungsstäbchens sowie wegen der beim Schaben von der Minenspitze her einwirkenden Druckbeaufschlagung vergleichsweise instabil.In the known sharpener, the mine former is like a cleaning stick molded scraper tongue. The cleaning stick flanks in a ready-to-use condition the tip housing snaps into a holder to the longitudinal axis of the guide channel approximately parallel direction such that the the scraper tongue formed with its free end essentially transverse to the longitudinal direction of the cleaning stick to the guide channel protrudes. The scraping tongue formed on the cleaning stick stands with its free end into the free space in front of the guide channel. The Holder of the cleaning stick with the towards the guide channel protruding scraping tongue is because of the long lever arm between the scraping tongue and snap holder of the cleaning stick and because of the Comparatively, scraping from the tip of the mine unstable.

Aus DE 37 37 863 C1 ist ein Spitzer für Weichstifte mit einem Fassonmesser für eine abrundende Formgebung der Minenspitze bekannt, bei der das Fassonmesser um einen Drehpunkt gegenüber dem Gehäusekorpus verschwenkbar Ist. Diese Anordnung ist konstruktiv aufwändig.From DE 37 37 863 C1 is a sharpener for soft pencils with a barrel knife for a rounded shape of the mine tip is known, in which the barrel knife Is pivotable about a pivot point with respect to the housing body. This Arrangement is structurally complex.

Der Erfindung liegt demgegenüber die Aufgabe zugrunde, einen Spitzer der eingangs genannten Art mit einem Minenformer zu versehen, welcher leicht am Spitzergehäuse applizierbar ist und zuverlässig ohne nachteilige Hebelwirkungen während des Spitzvorganges gegen von der Minenspitze her auf ihn einwirkende Druckbeaufschlagungen durch den Gehäusekorpus abgestützt ist. Schließlich soll der Minenformer in einfacher Weise ohne störende Einwirkung seitens auf ihn etwa einwirkender Verformungsdrücke seine Funktion erfüllen. Diese Aufgabe wird durch Anspruch 1 gelöst.The invention is based on the object, a sharpener of the beginning to provide the type mentioned with a mine former, which is easy on Pointed case is applicable and reliable without adverse leverage during the sharpening process against those acting on it from the mine tip Pressurization is supported by the housing body. After all, it should the mine former in a simple manner without any interference from him about acting deformation pressures perform its function. This task is solved by claim 1.

Der Minenformer lässt sich als Teil eines kompakten und dadurch weniger beschädigungsempfindlichen Bauteiles ausbilden. Seine Lösung und Wiederfixierung am Gehäusekorpus lässt sich von der Benutzungsperson in einfacher Weise nach Anspruch 2 oder 3 bewerkstelligen. Das wird noch durch die Gestaltung nach Anspruch 4 gefördert. Das Lösen und Wiedereinsetzen des Einsatzteils ist dadurch in besonders einfacher Weise ohne Behinderung durch das Spitzmesser möglich. Dadurch können die lösbaren Fixierverbindungen (Anspr. 2 oder 3) mit engen Passungen bzw. straffen Gehemmen ausgestattet sein, die in Fügestellung eine sichere Positionseinhaltung gewährleisten und dadurch für ihre Lösung einen höheren Kraftaufwand erfordern. Dabei kann die Beaufschlagung des Einsatzteils mit dem Lösedruck ohne Zuhilfenahme eines gesonderten Lösewerkzeugs durch eine Ausgestaltung beispielsweise nach Anspruch 9 und insbesondere in der Ausgestaltung nach Anspruch 10 erleichtert werden.The mine former can be part of a compact and therefore less sensitive to damage Train the component. His solution and re-fixation on the housing body can be easily by the user accomplish according to claim 2 or 3. That is still due to the design promoted according to claim 4. The loosening and reinserting of the insert part is thereby in a particularly simple manner without interference from the pointed knife possible. This allows the releasable fixing connections (Claim 2 or 3) with tight fits or tight braces that are in the joining position ensure a safe position and thus a solution for your solution require more effort. It can act on the insert with the release pressure without the aid of a separate release tool an embodiment for example according to claim 9 and in particular in the Embodiment according to claim 10 are facilitated.

Die Variabilität der Einsatzmöglichkeit eines Minenformers wird weiter durch Anspruch 5 und in der speziellen Ausgestaltung nach Anspruch 6 erhöht. Mit demselben Minenformer können unterschiedliche Formgestaltungen bzw. Abrundungen der Minenspitze hergestellt werden.The variability of the possible uses of a mine former is further enhanced by the claim 5 and increased in the special embodiment according to claim 6. With the same Mine formers can have different shapes or roundings the tip of the mine.

Durch Anspruch 7 und insbesondere durch dessen Ausgestaltung nach Anspruch 8 ist das Einsatzteil in einfacher Weise und mit hoher Positionsstabilität im Spitzerkorpus unterhalb des Spitzmessers zu positionieren, indem es in Zwischenlage an den beiden gegenüberliegenden Seitenwänden durch an ihnen angebrachte Fixiermittel gehalten ist.By claim 7 and in particular by its configuration according to claim 8 is the insert part in a simple manner and with high positional stability Position the sharpener body below the sharpener by placing it in the liner on the two opposite side walls by attached to them Fixing agent is held.

Nach Anspruch 11 bzw. 12 ist es möglich, dasselbe Einsatzteil mit mehreren Formkanten zu versehen, deren jede durch entsprechende Drehstellung innerhalb des Gehäusekorpus in Einsatzposition gebracht werden kann. According to claim 11 or 12, it is possible to use the same insert part with several Form edges to be provided, each of which by corresponding rotary position within of the housing body can be brought into the operating position.

Anspruch 14 schlägt eine Alternative für die Fixierung des Einsatzteils am Gehäusekorpus vor. Dieser Vorschlag trägt dem Umstand Rechnung, dass der in der Regel aus Kunststoff gespritzte Gehäusekorpus rundum weitgehend in sich geschlossen mit vergleichsweise dünnwandigen Lang- und Schmalseitenwänden ausgestattet ist, deren unteres Ende als Wandkante ausgebildet ist, wobei die Wandkanten aller Gehäusekorpusseiten in einer gemeinsamen Ebene liegen und zwischen sich einen infolge der funktionellen Ausgestaltung zerklüfteten Korpusboden zwischen sich einschließen. Dadurch ist der Korpusboden in der regelmäßigen, mit der Messerklinge nach oben weisenden Auflagestellung des Spitzers auf einer Tischoberfläche o.dgl. unsichtbar abgeschirmt. Diese regelmäßige Konstruktionsform des Gehäusekorpus eines aus Kunststoff einstückig gespritzten Gehäusekorpus ist nicht nur aus designerischen sondern auch aus spritztechnischen Gründen üblich, um weitgehend gleich dimensioniert dünne Wandstärken zu gewährleisten und dadurch unansehnliche, jedoch durch die Spritztechnik bedingte Einfallstellen zu vermeiden. Durch die als Alternative gemäß Anspruch 15 vorgeschlagene Aufsteckfixierung braucht der Gehäusekorpus selbst nicht mit zusätzlichen Fixiergestaltungen versehen zu werden. Dadurch ist es auch möglich, bereits existierende, jedoch nicht mit einem Minenformer ausgestattete Spitzer für Weichstifte nachträglich in einfacher Weise mit einem Minenformer auszustatten bzw. auszurüsten. Diese Variante hat den weiteren Vorteil, dass das Einsatzteil mit seinem auf die Gehäuseabschlusswand aufgesteckten Fixierbereich über die Abschlusswand nach außen vorsteht und dadurch eine bequeme Handhabe für das Lösen des Einsatzteils vom Spitzergehäuse zur Verfügung stellt.Claim 14 proposes an alternative for fixing the insert part to the housing body in front. This proposal takes account of the fact that the Rule body molded from plastic is largely self-contained all around with comparatively thin-walled long and narrow side walls is equipped, whose lower end is designed as a wall edge, the Wall edges of all housing body sides lie in a common plane and between them a rugged body floor due to the functional design enclose between themselves. As a result, the body bottom is in the regular, with the knife blade pointing upwards on a table surface or the like invisibly shielded. This regular form of construction of the housing body of a one-piece injection molded from plastic Housing body is not only from design but also from injection molding Reasons common to thin walls of largely the same dimensions to ensure and therefore unsightly, but due to the spray technology Avoid sink marks. By as an alternative according to claim 15 The housing body itself does not need the proposed attachment fixation to be provided with additional fixation designs. This also makes it possible existing sharpener, but not equipped with a mine former for soft pencils can be easily retrofitted with a lead former or equip. This variant has the further advantage that the insert part with its fixing area attached to the housing end wall protrudes beyond the end wall, making it easy to handle for detaching the insert part from the sharpener housing.

Der Vorschlag nach Anspruch 15 schafft die Grundlage für ein Farbcodiersystem, welches eine Unterscheidbarkeit der Konturen der als Einsatzteil ausgebildeten Minenformer auch für den Benutzer erheblich erleichtert. Dadurch kann der Spitzer mit einer Vielzahl unterschiedlicher, nach Art eines Bausatzes ausgestalteter Minenformer in seinem Gebrauchswert wesentlich vergrößert werden.The proposal according to claim 15 creates the basis for a color coding system, which distinguishes the contours of those designed as insert parts Mine former also considerably easier for the user. This allows the sharpener with a variety of different, designed like a kit Mine formers are significantly increased in their utility value.

Die Erfindung wird anhand von In den Figuren dargestellten Ausführungsbeispielen näher erläutert. Es zeigen:

Fig. 1
die perspektivische Draufsicht auf eine erste Ausführungsform des Spitzers mit gestrichelt eingezeichnetem und darunter in einer Explosionsdarstellung vom Spitzer gelöst in ausgezogenen Linien dargestelltem Einsatzteil als Minenformer.
Fig. 2
eine Draufsicht auf den Boden des Spitzers in Pfeilrichtung II von Fig. 1 mit eingesetztem Einsatzteil.
Fig. 3
eine Rückansicht des Spitzers in Pfeilrichtung III von Fig. 2.
Fig. 4
eine Seitenansicht in Pfeilrichtung IV von Fig. 3.
Fig. 5
eine Draufsicht auf den Spitzer in Pfeilrichtung V von Fig. 3 oder 4.
Fig. 6
eine Frontansicht auf die Stifteinführungsseite des Spitzers in Pfeilrichtung VI von Fig. 5.
Fig. 7
eine Rückansicht des als Minenformer wirksamen Einsatzteils in Pfeilrichtung VII von Fig. 1.
Fig. 8
eine Frontansicht des Einsatzteils in Pfeilrichtung VIII von Fig. 7.
Fig. 9
eine Draufsicht in Pfeilrichtung IX von Fig. 7.
Fig. 10
die perspektivische Draufsicht auf eine zweite Ausführungsform des Spitzers und auf das bei ihm verwendete Einsatzteil ähnlich Fig. 1.
Fig. 11-15
Darstellungen analog den Fig. 2 bis Fig. 6 des Spitzers gemäß Fig. 10 von seinen sämtlichen Seiten in Blickrichtungen jeweils der in römischen Ziffern angegebenen Art.
Fig. 16
die Ansicht isoliert eines Einsatzteils als Minenformer von unten, dessen Einsatzstellung am Spitzer in Fig. 11 dargestellt ist.
Fig. 17
eine Seitenansicht des Einsatzteils entsprechend der Pfeilrichtung XVII in Fig. 16.
Fig. 18
eine Draufsicht auf das Einsatzteil in Blickrichtung XVIII von Fig. 17.
Fig. 19
eine Seitenansicht in Pfeilrichtung XIX von Fig. 17.
Fig. 20
die schematisierte Draufsicht auf eine weitere Ausführungsform eines Spitzers mit in Freiraum einsitzendem Einsatzteil als Minenformer.
Fig. 21
eine Seitenansicht in Pfeilrichtung XXI von Fig. 20.
Fig. 22
eine schematisiert vereinfachte perspektivische Ansicht des Freiraumes im Gehäusekorpus 1 mit rechts daneben einem längsverschiebbaren Minenformer.
Fig. 23
eine modifizierte Ausführung des Freiraumes 5 nach Fig. 22 mit rechts daneben einem einsteckbaren, als Minenformer wirksamen Einsatzteil in seinen beiden unterschiedlichen Einsatzstellungen.
The invention is explained in more detail with reference to exemplary embodiments shown in the figures. Show it:
Fig. 1
the top perspective view of a first embodiment of the sharpener with a dashed line and underneath in an exploded view of the sharpener, the insert part shown in solid lines as a mine former.
Fig. 2
a plan view of the bottom of the sharpener in the direction of arrow II of FIG. 1 with an inserted part.
Fig. 3
a rear view of the sharpener in the direction of arrow III of FIG. 2nd
Fig. 4
3 shows a side view in the direction of arrow IV of FIG. 3.
Fig. 5
a plan view of the sharpener in the direction of arrow V of FIG. 3 or 4th
Fig. 6
a front view of the pin insertion side of the sharpener in the direction of arrow VI of Fig. 5th
Fig. 7
3 shows a rear view of the insert part effective as a mine former in the direction of arrow VII of FIG. 1.
Fig. 8
a front view of the insert in the direction of arrow VIII of FIG. 7th
Fig. 9
a plan view in the direction of arrow IX of FIG. 7th
Fig. 10
the top perspective view of a second embodiment of the sharpener and the insert used in it similar to FIG. 1st
Fig. 11-15
Representations analogous to FIGS. 2 to 6 of the sharpener according to FIG. 10 from its all sides in viewing directions of the type indicated in Roman numerals.
Fig. 16
the view isolates an insert part as a mine former from below, the position of which is shown on the sharpener in FIG. 11.
Fig. 17
a side view of the insert according to the direction of arrow XVII in Fig. 16th
Fig. 18
a plan view of the insert in viewing direction XVIII of FIG. 17th
Fig. 19
a side view in the direction of arrow XIX of FIG. 17th
Fig. 20
the schematic plan view of a further embodiment of a sharpener with an insert part sitting in free space as a mine former.
Fig. 21
a side view in the direction of arrow XXI of FIG. 20th
Fig. 22
a schematically simplified perspective view of the free space in the housing body 1 with right next to it a longitudinally movable lead former.
Fig. 23
22 with a modified version of the free space 5 according to FIG. 22 with an insertable insert part acting as a mine former in its two different positions.

Der Gehäusekorpus 1 umgibt an seinem der Einführungsseite 2 für den zu spitzenden Weichminenstift zugewandten Ende einen sich in Einführungsrichtung 31 konisch verjüngenden Führungskanal 3, der zur gehäuseseitigen Führung des im Wesentlichen kegelförmig anzuspitzenden Endes eines nicht dargestellten Weichminenstiftes dient. Oberhalb des Führungskanals 3 trägt das Gehäuse 1 ein schraubfixiertes Spitzmesser 4. Dieses flankiert den Führungskanal 3 im Bereich einer Seitenöffnung 33.The housing body 1 surrounds the insertion side 2 for the one to be pointed End facing the soft-lead pencil has an end in the direction of insertion 31 conically tapering guide channel 3, which for guiding the housing on the inside Essentially tapered end of a not shown Soft lead pen is used. The housing 1 enters above the guide channel 3 screw-fixed pointed knife 4. This flanks the guide channel 3 in the area a side opening 33.

Der Führungskanal 3 läuft sich verjüngend in Richtung auf einen den Stiftkonus aufnehmenden und unterhalb des vorderen Endes des Spitzmessers 4 positionierten Freiraum 5 des Gehäuses 1 aus. Dieser Freiraum 5 ist im Falle des in Fig. 1 dargestellten Gehäuses 1 in Richtung der Längsachse 11 des Führungskanals 3 auf der dem Führungskanal 3 abgewandten Gehäuserückseite offen und im Falle der Ausführungsform nach Fig. 10 durch eine Gehäuserückwand 9 geschlossen. Beim Spitzen wird der nicht dargestellte Stift innerhalb des Führungskanals 3 in Spitzrichtung (Drehrichtung) 32 gegen die Schneide 34 des Spitzmessers 4 gedreht. Dadurch hebt die Schneide 34 des Spitzmessers 4 einen Schälspan von der Spitze des Weichminenstiftes ab.The guide channel 3 tapers in the direction of the pin cone receiving and positioned below the front end of the pointed knife 4 Free space 5 of the housing 1. This free space 5 is in the case of Fig. 1 shown housing 1 in the direction of the longitudinal axis 11 of the guide channel 3 open on the back of the housing facing away from the guide channel 3 and in In the embodiment of FIG. 10 closed by a rear wall 9. When sharpening, the pin, not shown, is inside the guide channel 3 in the pointed direction (direction of rotation) 32 against the cutting edge 34 of the pointed knife 4 rotated. As a result, the cutting edge 34 of the pointed knife 4 lifts a peeling chip from the tip of the soft lead pencil.

In den Freiraum 5 steht ein mit einer Formkante 6 für die Minenformung versehenes Einsatzteil 7 als Minenformer zur Fassongebung der Minenspitze hinein. Das Einsatzteil 7 schließt im Falle der Ausführungsform von Fig. 1 den Freiraum 5 an seinem rückseitigen, dem Führungskanal 3 abgewandten Ende ab. Er stellt gewissermaßen den Abschluss des Führungskanals 3 zur Gehäuserückseite 12 hin dar und trägt an seiner dem Führungskanal 3 zugewandten Vorderende die Formkante 6 zur schabenden Minenformung. Die Formkante 6 wird von der Mine des nicht dargestellten, in Spitzrichtung 32 gedrehten Weichminenstiftes von unten nach oben beaufschlagt, so dass die Schabespäne nach unten fallen. Während also die Schneide des Spitzmessers 4 bezüglich der abgehobenen Schälspäne nach oben (Fig. 1,10) wirksam ist, richtet sich die Wirksamkeit der Formkante 6 des Einsatzteils 7 bezüglich der Fig. 1 und 10 nach unten.In the free space 5 is provided with a shaped edge 6 for the mine formation Insert part 7 as a mine former for fitting the tip of the mine into it. The In the case of the embodiment from FIG. 1, insert 7 connects to free space 5 its rear end facing away from the guide channel 3. In a way, he poses the completion of the guide channel 3 towards the rear of the housing 12 represents and carries the shape edge at its front end facing the guide channel 3 6 for scraping lead formation. The shape edge 6 is from the mine of not shown, in the pointed direction 32 soft lead pencil from below applied upwards so that the scraping chips fall down. While thus the cutting edge of the pointed knife 4 with respect to the peeled chips is effective upwards (Fig. 1,10), the effectiveness of the mold edge 6 is directed of the insert part 7 with respect to FIGS. 1 and 10 downwards.

Bei der Ausführungsform des Spitzers gemäß Fig. 1 bis 6 ist das Einsatzteil 7 mittels Reibschluss (Verklemmung) oder Verschnappung vor dem auslaufenden Vorderende des Führungskanals 3 im Freiraum 5 fixiert. Die Fixierung innerhalb des Freiraumes 5 erfolgt durch ein Aufstecken von unten, also von der Gehäuseunterseite 35 her in Steckrichtung 8 auf die beiden Seitenabschnitte der Gehäuserückwand 9. Dazu enthält das Einsatzteil 7 im Falle von Fig. 1 eine die Seitenabschnitte der Gehäuserückwand 9 umgreifende Aufstecknut 10.In the embodiment of the sharpener according to FIGS. 1 to 6, the insert part 7 by means of friction locking (jamming) or snapping in front of the outlet The front end of the guide channel 3 is fixed in the free space 5. The fixation inside of the free space 5 takes place by plugging on from below, that is to say from the underside of the housing 35 forth in the plug direction 8 on the two side sections of the rear wall of the housing 9. For this purpose, the insert part 7 in the case of FIG. 1 contains the side sections the plug-in groove 10 encompassing the rear wall 9.

Für das Aufstecken bzw. Einsetzen des Einsatzteils 7 von unten, also von der Gehäuseunterseite 35 her in Steckrichtung 8 in den Freiraum 5 dient das Spitzmesser 4 als Endanschlag. Das Einsatzteil 7 streckt sich über die gesamte Breite des Freiraumes 5 und kann daher auch im Freiraum 5 verspreizt sein. Die Unterseite 13 des die unten vorstehende Schaberippe 14 mit ihrer Formkante 6 tragenden Einsatzteils 7 bildet eine schalen- oder tablettartige Auflagefläche für die Weichminenspäne.For attaching or inserting the insert 7 from below, that is from The underside of the housing 35 serves in the insertion direction 8 in the free space 5, the pointed knife 4 as end stop. The insert 7 extends over the entire width of the free space 5 and can therefore also be spread out in the free space 5. The bottom 13 of the scraper rib 14 above with its shaped edge 6 Insert part 7 forms a bowl or tray-like support surface for the Soft-core chips.

Zur Erleichterung seiner Entfernung aus dem Freiraum 5 enthält das Einsatzteil 7 einen über die Kontur des Gehäuses 1 nach oben und/oder nach hinten hinausstehenden Handhabungsvorsprung 15. Der Handhabungsvorsprung 15 ist an einer dem Spitzmesser 4 abgewandten Seite des Einsatzteils 7 positioniert und steht im Falle der Ausführungsform gemäß den Fig. 1 bis 9 nach hinten zur Gehäuserückseite 12 über den Gehäusekorpus 1 hinaus. Das Einsatzteil 7 kann auch zwischen den Seitenflanken 16,17 des Freiraumes 5 verklemmt oder zwischen an diesen angebrachten Positionierungsmitteln verspannt sein.To facilitate its removal from free space 5, insert 7 contains one projecting beyond the contour of the housing 1 upwards and / or to the rear Handling projection 15. The handling projection 15 is on one the pointed knife 4 facing away from the insert 7 and stands in the case of the embodiment according to FIGS. 1 to 9 to the rear to the rear of the housing 12 beyond the housing body 1. The insert 7 can also jammed between the side flanks 16, 17 of the free space 5 or between be clamped to these attached positioning means.

Der Freiraum 5 der Ausführungsform gemäß Fig. 10 bis 19 des Spitzers ist nach hinten durch die Gehäuserückwand 9 verschlossen. Dort wird ein anderes Einsatzteil 18 verwendet. Es ist ebenfalls mittels Reibschluss im Freiraum 5 fixiert. Hier handelt es sich um eine Spreizverbindung, mit der das Einsatzteil 18 zwischen den Flanken 16,17 des Freiraumes 5 verspreizt ist. Es ist ebenfalls von unten in Steckrichtung 8 in den Freiraum 5 eingesetzt. Dabei bildet das Spitzmesser 4 wiederum einen Endanschlag für die Einsetzbewegung des Einsatzteils 18.The free space 5 of the embodiment according to FIGS. 10 to 19 of the sharpener is after closed at the rear by the rear wall 9 of the housing. There is another insert part 18 used. It is also fixed in the free space 5 by means of frictional engagement. This is an expansion connection with which the insert 18 between the flanks 16, 17 of the free space 5 is spread apart. It is also from used in the direction of insertion 8 in the free space 5. The pointed knife forms 4 in turn an end stop for the insertion movement of the insert part 18.

Auch das Einsatzteil 18 weist einen hier aber nach oben über den Gehäusekorpus 1 hinausstehenden Handhabungsvorsprung 19 auf. Das Einsatzteil 20 der Ausführungsform gemäß Fig. 20 bis 23 unterscheidet sich von den anhand der Fig. 1 bis 19 beschriebenen Einsatzteilen 7 und 18 in mehrerlei Hinsicht. Es ist zunächst in unterschiedlichen Abständen 21 vom Ende des Führungskanals 3 positionierbar bzw. festklemmbar. In Fig. 20 sind z. B. die wahlweise möglichen Positionsstellungen A und B eingezeichnet.The insert part 18 also has an up here over the housing body 1 protruding handling projection 19. The insert part 20 of the embodiment according to FIGS. 20 to 23 differs of the insert parts 7 and 18 described with reference to FIGS. 1 to 19 in several ways Respect. It is initially at different intervals 21 from the end of the Guide channel 3 can be positioned or clamped. In Fig. 20, e.g. B. the possible positions A and B are shown.

In Fig. 22 ist der Freiraum 5 schematisiert perspektivisch als U mit den beiden U-Schenkeln 23 und 24 dargestellt. An den Innenflanken 25 der hier als U-Schenkel 23,24 dargestellten Seitenwände des Freiraumes 5 sind stufenlose Längsführungen 26 für Einsatzteile 27 vorgesehen, die an ihren beiden Enden eine wahlweise in Einsatzstellung umsetzbare Formkante 28 für die Minenformung enthalten.In FIG. 22, the free space 5 is shown schematically in perspective as a U with the two U legs 23 and 24. On the inner flanks 25 here as a U-leg 23,24 shown side walls of the free space 5 are stepless longitudinal guides 26 is provided for insert parts 27, one of which is optional at both ends Form edge 28 which can be implemented in the use position for the mine formation.

Im Falle von Fig. 23 ist anstelle einer Längsführung 26 für das Einsatzteil 27 eine in den unterschiedlichen Fixierstellungen A und B vorgesehene Schnappfixierung zwischen den Formschlussteilen 29, 30 möglich.In the case of FIG. 23 there is a longitudinal guide 26 for the insert part 27 snap fixing provided in the different fixing positions A and B. possible between the form-fitting parts 29, 30.

Bei einer Vielzahl von mit unterschiedlichen Formkanten 6 ausgestatteten Einsatzteilen 7, 18, 20, 27 ist es vorteilhaft, diese hinsichtlich der unterschiedlichen Formen ihrer durch unterschiedliche Farbgebung (Farbcode) voneinander zu unterscheiden. With a large number of insert parts equipped with different shaped edges 6 7, 18, 20, 27, it is advantageous to differentiate these Distinguish their shapes from each other by different coloring (color code).

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Gehäusekorpushousing body
22
EinführungsseiteWelcome page
33
Führungskanalguide channel
44
Spitzmesserpointed knife
55
Freiraumfree space
66
Formkanteshaped edge
77
Einsatzteilinsert
88th
Steckrichtungplug-in direction
99
GehäuserückwandRear panel
1010
Aufstecknutplug-on
1111
Längsachselongitudinal axis
1212
GehäuserückseiteCase back
1313
Unterseitebottom
1414
Schaberippescraper rib
1515
Handhabungsvorsprungmanipulating projection
1616
Flankeflank
1717
Flankeflank
1818
Einsatzteilinsert
1919
Handhabungsvorsprungmanipulating projection
2020
Einsatzcommitment
2121
Abstanddistance
2323
U-SchenkelU-leg
2424
U-SchenkelU-leg
2525
Innenflankeinside edge
2626
Längsführunglongitudinal guide
2727
Einsatzteilinsert
2828
Formkanteshaped edge
2929
FormschlussteilForm-fitting part
3030
FormschlussteilForm-fitting part
3131
Einführungsrichtunginsertion direction
3232
SpitzrichtungSpitz direction
3333
Seitenöffnungside opening
3434
Schneidecutting edge
3535
GehäuseunterseiteHousing bottom
3636
GehäuseoberseiteHousing top

Claims (15)

  1. Sharpener for soft-core pencils, having a housing body
    which encloses a guide channel (3) for the pencil end and
    bears, on its top side, a sharpening blade (4) for the conical end of the pencil which is to be sharpened
    and, in the housing body, a free space (5)
    which is arranged in front of the guide channel (3),
    accommodates the conical end of the pencil and
    is positioned beneath the front sharpening-blade end,
    and having a core shaper which projects into the free space (5), is provided with a shaping edge (6) and is intended for shaping the core tip,
    the free space (5) being bounded at its front end, which is directed away from the guide channel (3), by a separate insert part (7, 18) which is fixed in a releasable manner,
    said insert part bearing the shaping edge (6) on its side which is directed towards the guide channel (3),
    characterized in that the free space (5) is open at the bottom, and in that the insert part (7, 18), which is inserted into the free space (5) from beneath, forms a boundary wall which closes off the free space (5) in the direction of the rear side (12) of the housing.
  2. Sharpener according to Claim 1, characterized in that the insert part (7, 18) can be fixed by means of a snap connection in front of the continuous front end of the guide channel (3).
  3. Sharpener according to Claim 1, characterized in that the insert part (7, 18) can be fixed by means of a friction fit.
  4. Sharpener according to one of Claims 1 to 3, characterized in that the sharpening blade (4) forms an end stop for the insertion movement of the insert part (7, 18).
  5. Sharpener according to one or more of the preceding claims, characterized in that it is possible for the insert part (7) to be adjusted within the free space (5) of the housing body (1), in the axial direction (11) of the guide channel (3) thereof, in particular displaced, or latched or snap-connected at different axial spacings from the guide channel (3).
  6. Sharpener according to Claim 5, characterized by stepless longitudinal guidance of the insert part in the free space.
  7. Sharpener according to one or more of the preceding claims, characterized in that the insert part (7, 18) extends over the entire width of the free space (5).
  8. Sharpener according to Claim 7, characterized in that the underside (13) of the supporting side for the shaping edge (6) of the insert part (7) forms a tray-like bearing surface for the soft-core shavings.
  9. Sharpener according to one of the preceding claims, characterized in that, in order to facilitate its removal from the free space, the insert part (7) has a handling protrusion (15) projecting beyond the housing contour.
  10. Sharpener according to Claim 9, characterized in that the handling protrusion (15) is positioned on a side of the insert part (7, 18) which is directed away from the sharpening blade (4), and projects rearwards beyond the housing body (1).
  11. Sharpener according to one of the preceding claims, characterized in that the insert part (7) can be clamped between the side flanks (16, 17) of the free space (5) or can be braced between positioning means fitted on said side flanks.
  12. Sharpener according to one of the preceding claims, characterized in that, on its lateral surface, the insert part (30) has in particular two diametrically opposite shaping edges (28) with different shaping contours, and in that the insert part can be changed over in respect of the orientation of the shaping edges (28) in the free space (5) such that a plurality of shaping edges (28) can optionally be moved individually into their shaping position.
  13. Sharpener according to one of the preceding claims, characterized in that the housing body (1) is open at the outer end of the free space (5).
  14. Sharpener according to one of the preceding claims, characterized in that the housing body (1) is closed off at the outer end of the free space (5) by a housing wall (9).
  15. Sharpener according to one of the preceding claims, characterized by a plurality of optionally insertable insert parts (7, 18, 20, 27) which are provided with different shaping edges (6) and can be distinguished from one another by different colouring.
EP00101137A 1999-04-06 2000-01-21 Sharpener for soft pencil lead Expired - Lifetime EP1043173B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19915384A DE19915384A1 (en) 1999-04-06 1999-04-06 Sharpener for soft pencils
DE19915384 1999-04-06

Publications (2)

Publication Number Publication Date
EP1043173A1 EP1043173A1 (en) 2000-10-11
EP1043173B1 true EP1043173B1 (en) 2002-10-16

Family

ID=7903598

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00101137A Expired - Lifetime EP1043173B1 (en) 1999-04-06 2000-01-21 Sharpener for soft pencil lead

Country Status (3)

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US (1) US6301791B1 (en)
EP (1) EP1043173B1 (en)
DE (2) DE19915384A1 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20010032U1 (en) * 2000-06-05 2000-09-28 Chang Chun Yuan pencil sharpener
GB2385681A (en) * 2002-01-31 2003-08-27 Crispin Bradley Clock with elapsed time display
DE10209192B4 (en) * 2002-03-04 2006-04-20 Eisen Gmbh Softpoint sharpener with swiveling blade
EP1382465B1 (en) 2002-07-19 2005-02-02 KUM Limited Sharpener for soft-core pencils
US20050005459A1 (en) * 2003-06-27 2005-01-13 Donaldson Joseph K. Carpenter's pencil sharpener
US6944960B2 (en) * 2003-12-30 2005-09-20 Cosimex (H.K) Limited Crayon sharpener
US7225547B2 (en) * 2004-05-21 2007-06-05 Kum Limited Pencil sharpener
DE502005004758D1 (en) * 2005-09-01 2008-08-28 Kum Ltd pencil sharpener
DE502006007629D1 (en) 2006-01-24 2010-09-23 Kum Ltd Sharpener for a soft pencil
US20080000094A1 (en) * 2006-07-03 2008-01-03 Guanghui Tong Pencil sharpener with a small limitation
US7654179B2 (en) * 2006-07-26 2010-02-02 Elmer's Products, Inc. Crayon sharpener
US8656600B2 (en) * 2010-05-03 2014-02-25 Walter F Hammer Pencil sharpener configured to work with a power drill
US20120233867A1 (en) * 2011-03-15 2012-09-20 Choon Nang Energy Equipment Mfy., Ltd. Pencil sharpener with two blades
CN107415141B (en) * 2017-09-22 2023-08-01 丁但凌 Processing die of pencil lead planing shell
US11040568B1 (en) 2020-06-25 2021-06-22 Ch Hanson Co Convertible apparatus for sharpening marking instruments

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1042427B (en) * 1958-05-20 1958-10-30 Klebes & Co K G A Pen sharpener with stop to limit the free lead length
US4248283A (en) * 1979-11-26 1981-02-03 Lowell Kaye Cosmetic pencil sharpener
DE3737863C1 (en) * 1987-11-07 1988-08-18 Moebius & Ruppert Sharpener for pencils with a soft lead
DE4440271B4 (en) * 1994-11-11 2005-08-18 Möbius & Ruppert Sharpener with adjustable blade for pens with soft refill
DE29723552U1 (en) * 1996-09-07 1998-09-24 KUM GmbH & Co KG Kunststoff- und Metallwarenfabrik, 91054 Erlangen Sharpener, especially for soft pencils
DE59700436D1 (en) 1997-06-05 1999-10-21 Kum Gmbh & Co Kg Kunststoff Un Sharpener for soft lead pencils
DE29723492U1 (en) * 1997-06-05 1998-08-27 KUM GmbH & Co KG Kunststoff- und Metallwarenfabrik, 91054 Erlangen Sharpener for soft lead pencils

Also Published As

Publication number Publication date
DE19915384A1 (en) 2000-10-19
DE50000631D1 (en) 2002-11-21
US6301791B1 (en) 2001-10-16
EP1043173A1 (en) 2000-10-11

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