EP1059149B1 - Scissors with a glide disk - Google Patents

Scissors with a glide disk Download PDF

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Publication number
EP1059149B1
EP1059149B1 EP00112304A EP00112304A EP1059149B1 EP 1059149 B1 EP1059149 B1 EP 1059149B1 EP 00112304 A EP00112304 A EP 00112304A EP 00112304 A EP00112304 A EP 00112304A EP 1059149 B1 EP1059149 B1 EP 1059149B1
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EP
European Patent Office
Prior art keywords
scissors
countersink
ring
scissors according
disc
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
EP00112304A
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German (de)
French (fr)
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EP1059149A1 (en
Inventor
Helmut Böning
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.)
"dovo" Stahlwaren Bracht & Co KG GmbH
Original Assignee
"dovo" Stahlwaren Bracht & Co KG GmbH
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Publication date
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Publication of EP1059149A1 publication Critical patent/EP1059149A1/en
Application granted granted Critical
Publication of EP1059149B1 publication Critical patent/EP1059149B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B13/00—Hand shears; Scissors
    • B26B13/28—Joints
    • B26B13/285—Joints with means for applying pressure on the blades; with means for producing "drawing-cut" effect

Definitions

  • the invention relates to scissors with a countersink one of the two scissor parts embedded in the run-up curve Gear disc on the exposed disc surface the run-up curve of the other scissor part when opening and closing slides (e.g. DE-A-3447962).
  • scissors have the hinge side of the hinge screw a gangway that acts as a counter bearing, especially at Close the scissors on their sheets approximately at right angles acting at the level of the closing and opening movement Absorbs strength. From the construction of the gangway it depends on whether the scissors are even when closing Has gear, etc. for example, even if the not the two cutting edges of the blades that meet are completely even.
  • the aisle for example, can be made of ground surfaces of the two scissor parts, with adjoining stems Free grinding exist.
  • the free grinds generate the run-up curves or so-called crescents of the two scissor parts.
  • the construction has a more advantageous construction Scissors of the type specified in the introduction.
  • the gear disc which is usually made of PTFE, can be a strip-shaped, have semicircular or circular outline usually pressed into their countersink and offers one Sufficiently large surface to tilt or tilt to prevent the other part of the scissors.
  • the exposed one Disc area for example, 0.2 mm above the articular surface of the scissor part in question is prevented also roughening the mating surface of the other scissors part.
  • the innovation is based on the task of a pair of scissors to create the genre specified, the one still smoother gear, even with minor defects in the Uniformity of the intersecting cutting edges or / and after many years of intensive use.
  • this object is achieved in that the Gear disc is elastically supported in the countersink.
  • the countersink can accommodate elastic bearing means for the gear disc be designed stepped (claim 2).
  • the O-ring is conveniently glued into the counterbore (claim 4).
  • the O-ring can also be in a rear or Be kept undercut, e.g. by eroding can be created.
  • the gear disc has a pin which engages in the bore (Claim 5).
  • the bore can be a through hole or a Be a blind hole.
  • the O-ring preferably surrounds the pin of the gear disk frictionally (claim 6).
  • the scissor parts 1 and 2 of the scissors shown in Fig. 1 are connected via a hinge screw 3 as usual.
  • a gear disk 5 in the latter inset that their exposed, visible disc surface slight, e.g. 0.2 mm above the crescent or the run-up curve survives so that the not visible in the figure Crescent of the scissor part 1 when opening and closing is supported on this disc surface.
  • the gear disk 5 is in particular in the scissor part 2 stored vertically elastic.
  • the shown in Figures 2 and 3 Sections show two embodiments. In both Cases has the pulley, which is preferably made of PTFE 5 a washer head 5a and a washer pin 5b.
  • the Disk head 5a is largely seated in a stepped countersink 6 with a central bore 7.
  • the latter can be a Blind hole (Fig. 2) or a through hole (Fig. 3) his.
  • the pin 5b of the pulley 5 encloses while her washer head 5a on the O-ring 8 rests.
  • the gear disc 5 is therefore mainly in Direction of the double arrow 10 slightly elastic slidably mounted. Therefore, it can be in the field of Run-up curves of the two scissor parts 1 and 2 in the direction the double arrow 10 when opening and especially when closing Compensate for different contact forces that occur.
  • the different contact forces can e.g. due to machining inaccuracies the run-up curves, wear, Foreign objects or small unevenness in the cutting edges 1a, 2a of the scissor parts 1 and 2 may be conditional.
  • the O-ring 8 is in the lower stage of the countersink 6 glued in, as indicated at 9.
  • the O-ring 8 is in the lower stage of the countersink 6 held positively, and This is because the latter has a slight undercut there Has. Such an undercut can be done without Create difficulties, especially if the Countersink created or machined by EDM becomes.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Scissors And Nippers (AREA)
  • Gears, Cams (AREA)
  • Lubricants (AREA)
  • Stringed Musical Instruments (AREA)
  • Harvester Elements (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Mechanical Operated Clutches (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Closures For Containers (AREA)

Abstract

The scissors encompass a sliding disc (5) which cover a recess in one of the scissor arms behind to pivot point. The other arm of the scissors slides across this disc as they open and close with respect to the other arm. The disc is located elasticity in the recess. The recess has stepped walls, whereby an elastic O-ring is held in place.

Description

Die Erfindung betrifft eine Schere mit einer in eine Ansenkung in der Auflaufkurve eines der beiden Scherenteile eingelassenen Gangscheibe, auf deren freiliegender Scheibenfläche die Auflaufkurve des anderen Scherenteils beim Öffnen und Schließen gleitet (e.g. DE-A-3447962).The invention relates to scissors with a countersink one of the two scissor parts embedded in the run-up curve Gear disc on the exposed disc surface the run-up curve of the other scissor part when opening and closing slides (e.g. DE-A-3447962).

Bekanntlich haben Scheren halmseitig von der Gelenkschraube eine Gangstelle, die als Gegenlager die insbesondere beim Schließen der Schere auf deren Blätter näherungsweise rechtwinkelig zur Ebene der Schließ- und Öffnungsbewegung wirkende Kraft aufnimmt. Von der Konstruktion der Gangstelle hängt es ab, ob die Schere beim Schließen einen gleichmäßigen Gang hat, uzw. beispielsweise auch dann, wenn die beiden aufeinandertreffenden Schneidkanten der Blätter nicht völlig ebenmäßig sind.As is well known, scissors have the hinge side of the hinge screw a gangway that acts as a counter bearing, especially at Close the scissors on their sheets approximately at right angles acting at the level of the closing and opening movement Absorbs strength. From the construction of the gangway it depends on whether the scissors are even when closing Has gear, etc. for example, even if the not the two cutting edges of the blades that meet are completely even.

Die Gangstelle kann zum Beispiel aus geschliffenen Flächen der beiden Scherenteile, mit halmseitig anschließenden Freischliffen bestehen. Die Freischliffe erzeugen die Auflaufkurven oder sogenannten Halbmonde der beiden Scherenteile.The aisle, for example, can be made of ground surfaces of the two scissor parts, with adjoining stems Free grinding exist. The free grinds generate the run-up curves or so-called crescents of the two scissor parts.

Wesentlich weniger aufwendig ist es, zwischen den Scherenteilen eine Federplatte anzuordnen, die an ihrem einen Ende von der Gelenkschraube durchgriffen wird und deren anderes, spitz zulaufendes Ende in eine halmseitig von der Gelenkschraube in dem einen Scherenteil angebrachte Körnung eingreift. Federplatten führen allerdings selten zu einem gleichmäßigen Gang der Schere, ermüden frühzeitig, können sich dann aus ihrer Sollposition verdrehen und begünstigen eine Verschmutzung der Schere im Gelenkbereich. It is much less complex between the scissor parts to arrange a spring plate at one end is penetrated by the joint screw and the other, pointed end in a stalk on the hinge screw grit attached in one part of the scissors intervenes. Spring plates rarely lead to one even scissors, can tire early then twist from their target position and favor contamination of the scissors in the joint area.

Eine demgegenüber vorteilhaftere Konstruktion hat die Schere der einleitend angegebenen Gattung. Die Gangscheibe, die in der Regel aus PTFE besteht, kann einen streifenförmigen, halbkreisförmigen oder kreisförmigen Umriß haben, ist in ihre Ansenkung gewöhnlich eingepreßt und bietet eine ausreichend große Oberfläche um ein Abkippen oder Verkanten des anderen Scherenteils zu verhindern. Die freiliegende Scheibenfläche, die zum Beispiel 0,2 mm über die Gelenkfläche des betreffenden Scherenteils übersteht, verhindert zudem ein Aufrauhen der Gegengelenkfläche des anderen Scherenteils.The construction has a more advantageous construction Scissors of the type specified in the introduction. The gear disc, which is usually made of PTFE, can be a strip-shaped, have semicircular or circular outline usually pressed into their countersink and offers one Sufficiently large surface to tilt or tilt to prevent the other part of the scissors. The exposed one Disc area, for example, 0.2 mm above the articular surface of the scissor part in question is prevented also roughening the mating surface of the other scissors part.

Der Neuerung liegt die Aufgabe zugrunde, eine Schere der einleitend angegebenen Gattung zu schaffen, die einen noch gleichmäßigeren Gang, auch bei geringfügigen Mängeln in der Ebenmäßigkeit der aufeinandertreffenden Schneidkanten oder/und nach langjährigem bzw. intensivem Gebrauch, aufweist.The innovation is based on the task of a pair of scissors to create the genre specified, the one still smoother gear, even with minor defects in the Uniformity of the intersecting cutting edges or / and after many years of intensive use.

Diese Aufgabe ist neuerungsgemäß dadurch gelöst, daß die Gangscheibe in der Ansenkung elastisch gelagert ist.According to the innovation, this object is achieved in that the Gear disc is elastically supported in the countersink.

Diese in erste Linie in der Höhenrichtung elastische Lagerung gleicht fertigungs- oder gebrauchsbedingte, geringfügige Unebenmäßigkeiten der Schneidkanten der Scherenteile, die anderenfalls zu einem ungleichmäßigen Gang führen würden, zumindest weitgehend aus. Dasselbe gilt im Prinzip auch für Unebenmäßigkeiten der Auflaufkurve, auf die äußerstenfalls sogar verzichtet, bzw. die durch einen einfachen Freischliff ersetzt werden könnte.This is primarily elastic in the vertical direction resembles manufacturing or use-related, minor Unevenness of the cutting edges of the scissors parts, which would otherwise lead to uneven gait, at least largely. The same applies in principle for unevenness of the run-up curve, on the extreme even waived, or by a simple free grinding could be replaced.

Die Ansenkung kann zur Aufnahme elastischer Lagermittel für die Gangscheibe gestuft ausgebildet sein (Anspruch 2).The countersink can accommodate elastic bearing means for the gear disc be designed stepped (claim 2).

Insbesondere kann die elastische Lagerung der Gangscheibe aus einem in der Ansenkung, vorzugsweise auf deren unterer Stufe, angeordneten O-Ring bestehen (Anspruch 3). In particular, the elastic mounting of the pulley one in the countersink, preferably on the lower one Stage, arranged O-ring exist (claim 3).

Der O-Ring wird zweckmäßig in die Ansenkung eingeklebt (Anspruch 4). Alternativ kann der O-Ring auch in einem Hinteroder Unterschnitt gehalten sein, der z.B. durch Erodieren geschaffen werden kann.The O-ring is conveniently glued into the counterbore (claim 4). Alternatively, the O-ring can also be in a rear or Be kept undercut, e.g. by eroding can be created.

Um die Gangscheibe sicher in der Ansenkung zu halten, geht diese vorzugsweise in eine Bohrung mit gegenüber dem Durchmesser der Ansenkung verringertem Durchmesser über, und die Gangscheibe hat einen in die Bohrung eingreifenden Zapfen (Anspruch 5). Die Bohrung kann eine Durchgangs- oder eine Sackbohrung sein.To keep the gear disc securely in the countersink, go this preferably in a bore with a diameter the diminished diameter above, and the The gear disc has a pin which engages in the bore (Claim 5). The bore can be a through hole or a Be a blind hole.

Bevorzugt umgibt der O-Ring den Zapfen der Gangscheibe reibschlüssig (Anspruch 6).The O-ring preferably surrounds the pin of the gear disk frictionally (claim 6).

Versuche haben ergeben, daß der O-Ring am besten eine Shorehärte von im Bereich von A70 P 583 haben soll, damit die Gangscheibe einerseits die vor allem auch rechtwinklig zu ihrer freiliegenden Fläche auf sie wirkenden Gegenkräfte elastisch aufnehmen kann, andererseits nicht unter diesen Gegenkräften in die Ansenkung ausweicht (Anspruch 7).Experiments have shown that the O-ring is best one Shore hardness in the range of A70 P 583 is said to have the gear disc on the one hand, which is above all rectangular to their exposed surface counteracting forces acting on them can absorb elastically, but not among them Opposing forces in the countersink evades (claim 7).

In der Zeichnung ist ein Ausführungsbeispiel einer Schere nach der Neuerung vereinfacht dargestellt. Es zeigt:

Figur 1
eine Aufsicht auf die Schere und
Figur 2
eine erste Ausführungsform des Gelenkbereiches der Schere in einem vergrößerten Teilschnitt entsprechend der Linie II-II in Fig. 1, und
Figur 3
eine zweite Ausführungsform des Gelenkbereiches in einem vergrößerten Teilschnitt entsprechend der Linie II-II in Figur 1.
In the drawing, an embodiment of a pair of scissors according to the innovation is shown in simplified form. It shows:
Figure 1
a supervision of the scissors and
Figure 2
a first embodiment of the joint region of the scissors in an enlarged partial section along the line II-II in Fig. 1, and
Figure 3
a second embodiment of the joint area in an enlarged partial section along the line II-II in Figure 1.

Die Scherenteile 1 und 2 der in Fig. 1 dargestellten Schere sind wie üblich über eine Gelenkschraube 3 verbunden. Im Bereich des durch die Linie 4 begrenzten, sog. Halbmondes des Scherenteils 2 ist in letzteres eine Gangscheibe 5 so eingelassen, daß ihre freiliegende, sichtbare Scheibenfläche geringfügig, z.B. 0,2 mm über den Halbmond oder die Auflaufkurve übersteht, so daß der in der Figur nicht sichtbare Halbmond des Scherenteils 1 sich beim Öffnen und Schließen auf dieser Scheibenfläche abstützt.The scissor parts 1 and 2 of the scissors shown in Fig. 1 are connected via a hinge screw 3 as usual. in the Area of the so-called crescent limited by line 4 of the scissor part 2 is a gear disk 5 in the latter inset that their exposed, visible disc surface slight, e.g. 0.2 mm above the crescent or the run-up curve survives so that the not visible in the figure Crescent of the scissor part 1 when opening and closing is supported on this disc surface.

Die Gangscheibe 5 ist in dem Scherenteil 2 insbesondere höhenelastisch gelagert. Die in den Figuren 2 und 3 dargestellten Schnitte zeigen zwei Ausführungsformen. In beiden Fällen hat die vorzugsweise aus PTFE bestehende Gangscheibe 5 einen Scheibenkopf 5a und einen Scheibenzapfen 5b. Der Scheibenkopf 5a sitzt weitgehend in einer gestuften Ansenkung 6 mit einer zentralen Bohrung 7. Letztere kann eine Sackbohrung (Fig. 2) oder eine Durchgangsbohrung (Fig. 3) sein.The gear disk 5 is in particular in the scissor part 2 stored vertically elastic. The shown in Figures 2 and 3 Sections show two embodiments. In both Cases has the pulley, which is preferably made of PTFE 5 a washer head 5a and a washer pin 5b. The Disk head 5a is largely seated in a stepped countersink 6 with a central bore 7. The latter can be a Blind hole (Fig. 2) or a through hole (Fig. 3) his.

In der Ansenkung 6, auf deren unterer Stufe, sitzt in beiden Ausführungsformen ein O-Ring 8, der den Zapfen 5b der Gangscheibe 5 umschließt, während ihr Scheibenkopf 5a auf dem O-Ring 8 ruht. Die Gangscheibe 5 ist dadurch vor allem in Richtung des Doppelpfeiles 10 in geringem Maße elastisch verschieblich gelagert. Deshalb kann sie im Bereich der Auflaufkurven der beiden Scherenteile 1 und 2 in Richtung des Doppelpfeiles 10 beim Öffnen und vor allem beim Schließen auftretende, unterschiedliche Anpreßkräfte ausgleichen. Die unterschiedlichen Anpreßkräfte können z.B. durch Bearbeitungsungenauigkeiten der Auflaufkurven, Verschleiß, Fremdkörper oder kleine Unebenmäßigkeiten der Schneidkanten 1a, 2a der Scherenteile 1 und 2 bedingt sein.In the countersink 6, at its lower level, sits in both Embodiments of an O-ring 8, the pin 5b of the pulley 5 encloses while her washer head 5a on the O-ring 8 rests. The gear disc 5 is therefore mainly in Direction of the double arrow 10 slightly elastic slidably mounted. Therefore, it can be in the field of Run-up curves of the two scissor parts 1 and 2 in the direction the double arrow 10 when opening and especially when closing Compensate for different contact forces that occur. The different contact forces can e.g. due to machining inaccuracies the run-up curves, wear, Foreign objects or small unevenness in the cutting edges 1a, 2a of the scissor parts 1 and 2 may be conditional.

In der Ausführungsform gemäß Fig. 2 ist der O-Ring 8 in die untere Stufe der Ansenkung 6 eingeklebt, wie bei 9 angedeutet. In the embodiment according to FIG. 2, the O-ring 8 is in the lower stage of the countersink 6 glued in, as indicated at 9.

In der Ausführungsform gemäß Fig. 3 wird der O-Ring 8 in der unteren Stufe der Ansenkung 6 formschlüssig gehalten, und zwar dadurch, daß letztere dort einen geringfügigen Hinterschnitt hat. Ein solcher Hinterschnitt läßt sich ohne Schwierigkeiten herstellen, insbesondere dann, wenn die Ansenkung durch Elektroerosion geschaffen oder fertigbearbeitet wird.In the embodiment according to FIG. 3, the O-ring 8 is in the lower stage of the countersink 6 held positively, and This is because the latter has a slight undercut there Has. Such an undercut can be done without Create difficulties, especially if the Countersink created or machined by EDM becomes.

Claims (7)

  1. Scissors comprising a motion plate (5) which is let into a countersink (6) in the lift cam portion of one of the two scissor members (1,2) and on the exposed plate surface of which slides the lift cam portion of the other scissor member upon opening and closing, characterised in that the motion plate (5) is mounted elastically in the countersink (6).
  2. Scissors according to claim 1 characterised in that the countersink (6) is of a stepped configuration.
  3. Scissors according to claim 1 or 2 characterised in that the elastic mounting of the motion plate (5) comprises an O-ring (8) arranged in the countersink (6).
  4. Scissors according to one of claims 1 to 3 characterised in that the O-ring (8) in glued into the countersink (6).
  5. Scissors according to one of claims 1 to 4 characterised in that the countersink (6) goes into a bore (7) of a diameter that is reduced in relation to the diameter of the countersink (6) and that the motion plate (5) has a projection (5b) which engages into the bore (7).
  6. Scissors according to claim 5 characterised in that the O-ring (8) surrounds the projection (5b) of the motion plate (5) in frictional engagement.
  7. Scissors according to one of claims 3 to 6 characterised in that the O-ring (8) is of a Shore hardness in the region of A70 P 583.
EP00112304A 1999-06-10 2000-06-08 Scissors with a glide disk Expired - Lifetime EP1059149B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29910126U DE29910126U1 (en) 1999-06-10 1999-06-10 Scissors with a gear disc
DE29910126U 1999-06-10

Publications (2)

Publication Number Publication Date
EP1059149A1 EP1059149A1 (en) 2000-12-13
EP1059149B1 true EP1059149B1 (en) 2002-05-08

Family

ID=8074608

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00112304A Expired - Lifetime EP1059149B1 (en) 1999-06-10 2000-06-08 Scissors with a glide disk

Country Status (7)

Country Link
EP (1) EP1059149B1 (en)
AT (1) ATE217238T1 (en)
CA (1) CA2311074A1 (en)
DE (2) DE29910126U1 (en)
DK (1) DK1059149T3 (en)
ES (1) ES2176145T3 (en)
PT (1) PT1059149E (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI128081B (en) 2018-07-27 2019-09-13 Tmi Linden Instr Hand operated shearing tool

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2239851A (en) * 1939-07-29 1941-04-29 Acme Shear Company Shears
DE2827679A1 (en) * 1978-06-23 1980-01-10 Fritz Bracht Stahlwarenfabrik Scissors with replaceable blades - has plastics handles with recesses shaped to suit tangs of blades with holes for connecting members
DE3447962A1 (en) * 1984-03-30 1985-11-21 Fritz Bracht GmbH & Co KG, 5650 Solingen Single-handed scissors made of metal, especially hair-cutting scissors
JPH08266752A (en) * 1995-03-30 1996-10-15 Toukoushiya:Kk Scissors for haircutting
ATE238889T1 (en) * 1997-09-25 2003-05-15 Wella Ag SCISSORS WITH A JOINT PLAY ADJUSTMENT DEVICE

Also Published As

Publication number Publication date
ATE217238T1 (en) 2002-05-15
DE29910126U1 (en) 1999-09-09
EP1059149A1 (en) 2000-12-13
DE50000158D1 (en) 2002-06-13
DK1059149T3 (en) 2002-08-19
CA2311074A1 (en) 2000-12-10
PT1059149E (en) 2002-10-31
ES2176145T3 (en) 2002-12-01

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