EP0985549A1 - Spitzer - Google Patents
Spitzer Download PDFInfo
- Publication number
- EP0985549A1 EP0985549A1 EP99118154A EP99118154A EP0985549A1 EP 0985549 A1 EP0985549 A1 EP 0985549A1 EP 99118154 A EP99118154 A EP 99118154A EP 99118154 A EP99118154 A EP 99118154A EP 0985549 A1 EP0985549 A1 EP 0985549A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- knife blade
- fixed
- 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.)
- Granted
Links
- 238000005452 bending Methods 0.000 claims abstract description 21
- 238000003780 insertion Methods 0.000 claims description 14
- 230000037431 insertion Effects 0.000 claims description 14
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000002537 cosmetic Substances 0.000 description 12
- 238000010276 construction Methods 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000001154 acute effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000834 fixative Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L23/00—Sharpeners for pencils or leads
- B43L23/08—Sharpeners for pencils or leads in which the pencils or leads are sharpened mainly by rotational movement against cutting blades
Definitions
- the invention relates to a sharpener with a housing and therein a guide channel, into which an insertion opening for a pen opens, and with an im Area of a housing contact surface fixed knife blade.
- Such a sharpener is used in particular as a cosmetic sharpener Regeneration and shaping of the tip of a cosmetic pencil as required or a cosmetic mine.
- Such cosmetic sharpeners are mostly called so-called Container sharpener trained. This is on the muzzle base or insertion opening one end for the opposite end of the housing Chip cap pushed on or clipped on to accommodate the pointed waste serves.
- Such cosmetic sharpeners are usually in the idle state like a Protective cap on the end of use of a cosmetic stick or a cosmetic lead fixed to the end of use of the pen, especially its lead, shield against the environment when not in use. That from housing and if necessary, existing ensemble attached to the housing therefore ideally has the outline shape of a protective cap, as e.g. also used for pens to cover the tip of the lead when not in use becomes.
- this protective cap is often also provided with a clip for hanging in a pocket, e.g. into the inside pocket of a piece of clothing.
- Such hanging clips can also be used for cosmetic sharpeners that are not in use the function of a protective cap for the mine end take.
- Cosmetic pencils are usually in when not in use by the user Bags, bags, cases or the like stored. The environmental protection is opposite there the end of use or the mine of particular importance.
- the knife blade required in such a sharpener usually exists made of a metallic material, e.g. from a tempering steel.
- the normally knife blade having the shape of an elongated flat cuboid is sharpened on one longitudinal flank to form a knife edge.
- this knife blade is centered on the housing fixed with a single screw. The screw penetrates the knife blade in the area of a through hole.
- the basic structure of such Spitzers with a screw-fixed knife blade is known from EP 0 078 512 A1.
- a minimum screw diameter required for strength reasons is required however, a certain minimum width of the essentially flat cuboid Knife blade. Otherwise, the through hole would be significant Weaken the inherent strength of the knife blade. Especially in Midrange, d. H.
- the knife blade experiences in the passage area of the fixing screw the highest stress when tipping, because there the highest cutting forces occur. This is the responsibility of the cosmetic pencils, which are usually made of wood Part of the knife blade is peeling off the wooden frame, which is significantly higher Cutting forces are required as the shape of the lead used in cosmetic pencils in the Is generally of a soft consistency.
- Knife blade Because of the minimum width required for the central screw fixation Knife blade that is used results in a sharpener housing with in Inner region of a hollow conical guide channel in the peripheral region of the conical foot a space problem if a space-saving construction of the sharpener is sought becomes. Because of the design, the knife blade points in this area the same width as in the central area provided with the screw hole. The is also desirable or necessary for strength reasons, because of this The middle area of the sheath of the pen, which is usually made of wood generates the highest cutting pressure. There, the knife blade therefore has the record the highest reaction pressure. Therefore, one would be as close as possible to the location Fixation of the knife blade helpful, as it is usually arranged in the middle Fastening screw hardly applied due to space problems can be, if the space-saving construction mentioned is aimed.
- the object of the invention is therefore to save space Construction of the sharpener an advantageous and safe way of fixing the knife blade to accomplish on the housing.
- a two-point fixation of the knife blade at both ends d. H. a knife fixation on both ends is provided, only in the area of the radial internal and therefore less problematic with regard to the space problem
- a separate fixing agent on the inside end of the knife blade as a fixing point, in particular a screw is used. Due to the very close positioning e.g. B. a screw connection is the housing of the screw head within the jacket area of the pointed case unproblematic.
- Knife blade In the area near the outer end of the insertion opening for the pin insertion or the outer end of the knife blade, however, is clamped Knife blade on the housing itself without a separate, additional fixative, like a screw with its head disturbing the circumference of the pointed case would stand out. There the knife blade with its outer end jammed behind a projection fixed to the housing. This is done through generation a bending stress in fixing the inner end of the knife blade by this in the area of the outer end around a bending edge at the transition between a hollow cylindrical area and a hollow conical area of the guide channel to be led.
- the knife blade is either flat or to generate a positive preload - based on the housing contact surface - Convex in the initial state.
- the housing-fixed projection is expediently in one piece with which Housing integral component executed and forms a receiving pocket.
- the knife blade In front tightening the inside or outside of the knife blade is the knife blade with its outer end or outer end only in the housing or receiving pocket essentially in the axial direction approximately parallel to the longitudinal axis of the guide channel to insert.
- the one penetrating the inner end of the knife blade is Fixing screw in front of the cone tip of the hollow-conical channel area and thus inevitably particularly far outside the guide channel positioned from the peripheral jacket of the sharpener housing.
- the screw head of the fixing screw does not cause any space problems and on the other hand does not hinder the undisturbed flow of peeling waste through the Rake face of the knife blade.
- the sharpener 1 is used for sharpening a soft lead pencil 2, one inside of a wooden jacket 3 contains soft lead 4.
- the sharpener 1 has a housing 5 with a guide channel 6, which is open in two places. It is The pin 2 can be inserted via an insertion opening or mouth base 7. To the The guide channel has an insertion opening 7 adjacent in the insertion direction 8 6 first a hollow cylindrical region 6a, in which the jacket 3 of the Pin 2 is guided freely rotatable. The actual guidance of the pin 2 takes place, however, in a front, in the hollow cylindrical region 6a in Insertion direction 8 adjoining hollow conical region 6b, the Outline shape corresponds to the conical tip 9 of the pin 2.
- the guide channel 6 is also open in this hollow-conical region 6b namely along an incline towards its central axis 10 Longitudinal flank that forms a housing system or housing contact surface 11.
- the Knife blade 13 is in the fixing position with its outer end 14 from the outside thereof 15 ago by a housing-fixed projection 16 pressurized.
- the housing-fixed Projection 16 forms on the loading side 16a of the outer end 14 of the knife blade 13 facing away from the outside 16b a part of the Housing 5 or its jacket 17th
- the knife blade 13 is in contact with the housing 5 screw-fixed that the outer end 14 pressed against the projection 16 from the inside becomes.
- the projection 16 fixed to the housing and the housing contact surface 11 positioned for the knife blade 13 such that the knife blade 13 in Fixing position is under a bending stress.
- the bending stress is generated through a bearing or bending edge 19 on the outside of the guide channel 6 at its transition from the hollow cylindrical region 6a to the hollow cone Area 6b is formed. This can be seen comparatively clearly from FIG. 2.
- a fixing screw 22 is in the longitudinal direction of the knife blade 13 flanking Housing opening 12 next to this and off-center (Fig. 3) and in particular in front the cone tip 6c, d. H. positioned outside the guide channel 6 (Fig. 1).
- the Knife blade 13 itself is then positioned next to the central axis 10 and covered partially the housing opening 12 (Fig. 3), through which the tip of the pin 2 generated chip fails.
- the knife blade 13 is first used the outer end 14 pushed under the housing-fixed projection 16. This is shown in Figure 2 by the dashed knife contour. Forms in this position the knife blade 13 with the bearing surface outside of the projection 16 15 on the housing 5 an acute angle ⁇ , which can be very small.
- ⁇ an acute angle
- the clamping pressure at the outer end 14 of the Knife blade 13 generated so that it is then in the housing system between the both fixing points is under a bending stress. This affects the entire length of the knife blade 13 stabilizing it.
- the outer end 14 of the knife blade 13 is clamped by tightening the fixing screw 22.
- With increasing pivoting caused by tightening the fixing screw 22 the knife blade 13 clockwise around the bending edge 19 and thus around the Bearing point of the outer end 14 increases the jamming of the knife blade there 13 below the projection 16.
- the screw-fixed knife blade 13 then affects the hollow-conical region 6b of the guide channel 6 for the Pin 2.
- a chip cap 25 is shown, which is opposite to the direction of insertion 8 and thus in the longitudinal direction of the sharpener 1 can be pushed onto the housing 5. In the pushed-on position, the chip cap 25 closes the peripheral area the knife blade 13 to form a chip chamber hermetically.
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
Description
- Fig. 1
- einen Längsschnitt entsprechend der Schnittlinie I-I in Fig. 3 durch einen Spitzer mit beidendseitiger Messerklingenfixierung,
- Fig. 2
- einen Ausschnitt II aus Fig. 1 in größerem Maßstab mit um eine Biegekante geführter Messerklinge, und
- Fig. 3.
- in Explosionsdarstellung das Gehäuse eines Kosmetikspitzers mit zugeordneter Spanfangkappe.
- 1
- Spitzer
- 2
- Weichminenstift
- 3
- Holzmantel
- 4
- Weichmine
- 5
- Gehäuse
- 6
- Führungskanal
- 6a
- hohlzylinderförmiger Bereich
- 6b
- hohlkegelförmiger Bereich
- 6c
- Kegelspitze
- 7
- Einführungsöffnung
- 8
- Einführungsrichtung
- 9
- Spitze
- 10
- Mittelachse
- 11
- Gehäuseanlage/-auflagefläche
- 12
- Gehäuseöffnung
- 13
- Messerklinge
- 14
- Außenende
- 15
- Außenseite
- 16
- Vorsprung
- 16a
- Beaufschlagungsseite
- 16b
- Außenseite
- 17
- Gehäusemantel
- 18
- Innenende
- 19
- Biegekante/Lagerstelle
- 20
- Aufnahmetasche
- 21
- Außenrand
- 22
- Fixierschraube
- 23
- Spanfläche
- 24
- Schraubenkopf
- 25
- Spanfangkappe
Claims (6)
- Spitzer mit einem Gehäuse (5) und darin einem Führungskanal (6), in den eine Einführöffnung (7) für einen Stift (2) mündet, und mit einer im Bereich einer Gehäuseanlagefläche (11) fixierten Messerklinge (13),wobei der Führungskanal (6) ausgehend von der Einführungsöffnung (7) einen hohlzylindrischen Bereich (6a) und einen daran unter Bildung einer Biegekante (19) angrenzenden hohlkegelförmigen Bereich (6b) aufweist, undwobei die Messerklinge (13) durch eine Zweipunktfixierung an deren Außenende (14) einerseits sowie an deren diesem gegenüberliegenden Innenende (18) andererseits gehalten ist und in Fixierstellung unter einer Biegespannung steht, indem das Außenende (14) unter einen gehäusefesten Vorsprung (16) geführt und das Innenende (18) unter Biegung der Messerklinge (13) um die Biegekante (19) am Gehäuse (5) fixiert ist.
- Spitzer nach Anspruch 1,
dadurch gekennzeichnet,
dass das Innenende (18) der Messerklinge (13) außerhalb einer der Biegekante (19) gegenüberliegenden Kegeispitze (6c) des hohlkegelförmigen Bereichs (6b) am Gehäuse (5) fixiert ist. - Spitzer nach Anspruch 1 oder 2,
gekennzeichnet durch
eine zum Führungskanal (6) hin offene Aufnahmetasche (20) des Gehäuses (5), die das Außenende (14) der Messerklinge (13) umgibt und mit einem Außenrand (21) den gehäusefesten Vorsprung (14) bildet. - Spitzer nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet,
dass die Gehäuseanlagefläche (11) im hohlkegelförmigen Bereich (6b) in Richtung auf die Mittelachse (10) des Führungskanals (6) geneigt ist, und dass eine Fixierschraube (22) für das Innenende (18) der Messerklinge (13) neben der Mittelachse (10) positioniert ist. - Spitzer nach Anspruch 4,
dadurch gekennzeichnet,
dass die Gehäuseanlagefläche (11) eine Flankenöffnung (12) aufweist. - Spitzer nach einem der Ansprüche 1 bis 4,
gekennzeichnet durch
eine entgegen einer Einführungsrichtung (8) für den Stift (2) auf das Gehäuse (5) aufschiebbare Spanauffangkappe (25).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19841730A DE19841730A1 (de) | 1998-09-12 | 1998-09-12 | Spitzer |
DE19841730 | 1998-09-12 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0985549A1 true EP0985549A1 (de) | 2000-03-15 |
EP0985549B1 EP0985549B1 (de) | 2001-02-07 |
Family
ID=7880709
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99118154A Expired - Lifetime EP0985549B1 (de) | 1998-09-12 | 1999-09-11 | Spitzer |
Country Status (3)
Country | Link |
---|---|
US (1) | US6279237B1 (de) |
EP (1) | EP0985549B1 (de) |
DE (2) | DE19841730A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102963195A (zh) * | 2012-12-11 | 2013-03-13 | 四川大学 | 一种同向双刀片铅笔刀 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050005459A1 (en) * | 2003-06-27 | 2005-01-13 | Donaldson Joseph K. | Carpenter's pencil sharpener |
US20050145086A1 (en) * | 2004-01-05 | 2005-07-07 | Mohr Monte D. | Combination pencil sharpener bottle cap |
WO2011134116A1 (zh) * | 2010-04-30 | 2011-11-03 | 温州可为文具科技有限公司 | 螺旋型刀片卷笔刀 |
US8656600B2 (en) * | 2010-05-03 | 2014-02-25 | Walter F Hammer | Pencil sharpener configured to work with a power drill |
CN108357265B (zh) * | 2018-04-04 | 2024-02-23 | 三木控股集团有限公司 | 一种卷笔刀架 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1822994A (en) * | 1931-03-17 | 1931-09-15 | Louis M Markowitz | Pencil attachment |
US2143797A (en) * | 1935-04-29 | 1939-01-10 | Edward V Powell | Pencil sharpener |
US2309194A (en) * | 1941-10-25 | 1943-01-26 | Charles W Hutchinson | Lead pointing device |
US2366928A (en) * | 1944-01-07 | 1945-01-09 | Anthon H Paschell | Pencil sharpener |
EP0078512A1 (de) | 1981-10-29 | 1983-05-11 | Hiroo Hayashi | Bleistiftanspitzer |
DE3041313C2 (de) | 1980-11-03 | 1983-12-08 | Christian Eisen & Sohn, Metallwarenfabrik, 8523 Baiersdorf | Spitzer, insbesondere Schreibstift-Spitzer |
DE3812252C1 (en) | 1988-04-13 | 1989-03-23 | Moebius & Ruppert, 8520 Erlangen, De | Sharpener |
DE3932586A1 (de) | 1988-04-13 | 1991-05-29 | Moebius & Ruppert | Spitzer |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4406315A (en) * | 1981-02-20 | 1983-09-27 | Collier Bros. | Pencil sharpener |
US4934057A (en) * | 1988-04-27 | 1990-06-19 | Chao Wen K | Multi-blade pencil-core sharpener |
DE4000122A1 (de) * | 1990-01-04 | 1991-07-11 | Eisen C & Sohn | Spitzer |
US5379817A (en) * | 1994-03-03 | 1995-01-10 | O'neil; Edmund | Sharpener for a soft element pencil |
DE19636438A1 (de) * | 1996-09-07 | 1998-03-12 | Kum Gmbh & Co Kg Kunststoff Un | Spitzer insbesondere für Weichminenstifte |
US5774995A (en) * | 1996-10-24 | 1998-07-07 | Ross; Richard M. | Candle sharpening system |
-
1998
- 1998-09-12 DE DE19841730A patent/DE19841730A1/de not_active Withdrawn
-
1999
- 1999-09-10 US US09/394,197 patent/US6279237B1/en not_active Expired - Lifetime
- 1999-09-11 DE DE59900042T patent/DE59900042D1/de not_active Expired - Lifetime
- 1999-09-11 EP EP99118154A patent/EP0985549B1/de not_active Expired - Lifetime
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1822994A (en) * | 1931-03-17 | 1931-09-15 | Louis M Markowitz | Pencil attachment |
US2143797A (en) * | 1935-04-29 | 1939-01-10 | Edward V Powell | Pencil sharpener |
US2309194A (en) * | 1941-10-25 | 1943-01-26 | Charles W Hutchinson | Lead pointing device |
US2366928A (en) * | 1944-01-07 | 1945-01-09 | Anthon H Paschell | Pencil sharpener |
DE3041313C2 (de) | 1980-11-03 | 1983-12-08 | Christian Eisen & Sohn, Metallwarenfabrik, 8523 Baiersdorf | Spitzer, insbesondere Schreibstift-Spitzer |
EP0078512A1 (de) | 1981-10-29 | 1983-05-11 | Hiroo Hayashi | Bleistiftanspitzer |
DE3812252C1 (en) | 1988-04-13 | 1989-03-23 | Moebius & Ruppert, 8520 Erlangen, De | Sharpener |
DE3932586A1 (de) | 1988-04-13 | 1991-05-29 | Moebius & Ruppert | Spitzer |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102963195A (zh) * | 2012-12-11 | 2013-03-13 | 四川大学 | 一种同向双刀片铅笔刀 |
Also Published As
Publication number | Publication date |
---|---|
DE59900042D1 (de) | 2001-03-15 |
DE19841730A1 (de) | 2000-03-23 |
US6279237B1 (en) | 2001-08-28 |
EP0985549B1 (de) | 2001-02-07 |
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