EP0442004B1 - Couteau à lames interchangeables - Google Patents

Couteau à lames interchangeables Download PDF

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Publication number
EP0442004B1
EP0442004B1 EP90102850A EP90102850A EP0442004B1 EP 0442004 B1 EP0442004 B1 EP 0442004B1 EP 90102850 A EP90102850 A EP 90102850A EP 90102850 A EP90102850 A EP 90102850A EP 0442004 B1 EP0442004 B1 EP 0442004B1
Authority
EP
European Patent Office
Prior art keywords
slide
knife
housing
blade
latching
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
EP90102850A
Other languages
German (de)
English (en)
Other versions
EP0442004A1 (fr
Inventor
Gerd Fierus
Udo Fierus
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.)
Hazet Werk Hermann Zerver GmbH and Co KG
Original Assignee
Hazet Werk Hermann Zerver GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hazet Werk Hermann Zerver GmbH and Co KG filed Critical Hazet Werk Hermann Zerver GmbH and Co KG
Priority to DE90102850T priority Critical patent/DE59005203D1/de
Priority to AT90102850T priority patent/ATE103525T1/de
Priority to EP90102850A priority patent/EP0442004B1/fr
Priority to DK90102850.6T priority patent/DK0442004T3/da
Priority to ES90102850T priority patent/ES2052987T3/es
Publication of EP0442004A1 publication Critical patent/EP0442004A1/fr
Application granted granted Critical
Publication of EP0442004B1 publication Critical patent/EP0442004B1/fr
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
    • B26B5/00—Hand knives with one or more detachable blades
    • B26B5/001—Hand knives with one or more detachable blades with blades being slid out of handle immediately prior to use

Definitions

  • the invention relates to a knife for interchangeable knife blades with a housing and a longitudinally displaceable slide in the housing, which can be fixed at predetermined intervals of a detent formed on the housing and on which the knife blade is held interchangeably by means of a pin engaging in a hole in the knife blade, the respective knife blade is held on the slide by means of a holder which is provided with a pin corresponding to the hole of the respective knife blade and is interchangeably mounted on the slide.
  • Knives of this type are known in various designs. They are used as so-called technical knives in various craft work, for example when laying carpets. In addition to trapezoidal carpet knife blades that are designed with either a smooth or hook-shaped cutting edge, so-called snap-off blades are also used. Knife blades of this type are divided into several sections by predetermined breaking lines; as soon as the cutting edge of the respective front section has become blunt, the front section is broken off, so that a new section of the snap-off blade with a sharp cutting edge is then available for the work ahead.
  • the known knife blades are not only designed differently with regard to their respective purpose, but also are also held in different ways on the slider which is longitudinally displaceable in the knife housing.
  • many of the known knife blades are provided with a hole which can be placed on a pin of the respective slide for holding the knife blade.
  • the knife blades most commonly used in practice differ not only in their thickness and width and length, but also in the position and diameter of the hole provided for mounting the knife blade on the slide. For this reason, despite a certain standardization, it is necessary to use different knife housings for different knife blades.
  • a knife of the type described is known, in which the holder can be fixed in different positions on the slide and is provided with two concentrically formed pins of different diameters, which cooperate with the differently sized holes of the different knife blades.
  • the holder In order to adapt the holder to different knife blades, the holder must be removed and adjusted relative to the slide.
  • a locking unit acted upon by spring force is required, which holds the holder in the respective position on the slide.
  • the invention has for its object the known knife, which can be used universally for most of the commercially available blades despite the differences of such knife blades in terms of length, width, thickness and hole formation, such that there is a simplified adaptation to the blade to be used in each case .
  • the holder is designed as a reversible holder which is rotatably mounted on the slide by 180 ° and is provided at each end with a pin, the diameter of which is of different sizes in accordance with the various commercially available knife blades.
  • This inventive development of a reversible holder mounted on the slide for holding the exchangeable knife blades has the advantage that the same knife housing can be used for different commercially available knife blades, for example for carpet knife blades and snap-off blades, whose width is between 18 and 19 mm and their thickness is between 0.5 and 0.65 mm and which, apart from a different length, have holes of either 5.2 or 7.1 mm in order to be fixed on the slide of the knife.
  • the respective knife blade is reliably fixed both on the slide and in the guide channel of the knife housing, because the turning holder can be rotated through 180 °, whereby not only one for the correct determination of the knife blade to be used in each case Pin with the correct diameter is available, but also the distance of the knife back to the knife guide channel formed in the knife housing is set such that the back of the respective knife blade lies reliably against the guide channel.
  • the invention thus creates a universal technical knife for using differently designed knife blades.
  • the turning holder is provided at the end with a transverse web, the guide surfaces of which extend parallel to the longitudinal extension and bear against the corresponding guide surfaces of the blade channel, so that the front end in the Front slot of the housing-guided knife blade is also reliably guided in the blade channel in the area of its attachment to the slide, because the guide surfaces formed on the crossbars are guided in the blade channel so that they cannot tip over and rotate.
  • the turning holder is provided with a bearing pin with which it is positioned in a corresponding bearing bore in the slide.
  • the turning holder on the slide can be further fixed in that it is secured against rotation by longitudinal guide webs on the slide.
  • the slide is provided on its underside with at least one latching cam, which engages in a detent formed on the housing with respect to the underside of the slider, from which the latching cam can emerge due to the elasticity of the slide and on which the latching cam by means of a Locking member can be fixed.
  • This further development according to the invention results in a positive locking of the slide on the knife housing, which can only be released consciously and not accidentally; in the known spring catches, which require an additional spring element, which can be lost or broken, an unintentional actuation is not excluded, so that, in contrast to the knife according to the invention, an unwanted release of the knife blade lock can occur.
  • Training such an incorrect operation is excluded by a positive locking of the slide on the housing, so that the knife according to the invention can also be used for saw blades that are loaded in the pulling and pushing directions.
  • the locking member is formed by a rotatably mounted gag which engages under the catch in the locking position and thus prevents the locking cam from escaping due to the elasticity of the slide and which is dimensioned in the release position such that there is no under-grip.
  • the detent is arranged on the broad side of the knife housing and thus not in the pressure area of the knife, which is constantly loaded by the thumb or the ball of the thumb during use. This also prevents incorrect actuation of the knife lock and thus unconscious triggering.
  • two mutually opposite detents are provided according to the invention.
  • an additional channel for storing reserve knife blades is formed in the housing parallel to the blade channel, a larger number can also be different Knife blades can be reliably stored in the knife.
  • the invention proposes to close the housing at its end facing away from the front slot by a cap that closes both the blade channel and the additional channel.
  • the knife shown in Figures 1 to 4 in different views consists of a knife blade M housing 1, which is provided at its front end with a front slot 2 as an outlet for the front end of the knife blade M and at its rear end with a cap 3 is.
  • a slide 4 is guided in a longitudinally displaceable manner and can be locked in various positions by means of a toggle 5, which is rotatably mounted on the slide 4 as a locking member, which are predetermined by a detent 6 formed on the housing 1.
  • the slide 4 is displaceably guided in a guide channel 7 running in the longitudinal direction of the housing 1.
  • This guide channel 7 can be seen in FIGS. 2 and 5 in plan view and in FIG. 7 in cross section.
  • Figures 8 to 12 show the slide 4 in different views and in cross section.
  • the slide 4 is provided on its underside with two latching cams 8 which are formed in one piece on a fork-shaped part of the slide 4, this fork-shaped part of the slide 4 being designed to be resilient with respect to the main slide part, which in the exemplary embodiment is a transverse one Material weakening 9 is provided.
  • the material weakening 9 causes the locking cams 8 to emerge resiliently from the recesses of the locking 6 when the slide 4 moves longitudinally relative to the housing 1, so that the slide 4 can be moved in the longitudinal direction of the housing 1.
  • a locking member in the form of a toggle 5 is provided.
  • This gag 5 is shown as an individual part in FIGS. 19, 20 and 21.
  • the toggle 5 comprises a cylindrical middle piece 10 with which it is rotatably mounted in circular bearing points 11 of the slide 4, these circular segment shaped bearing points 11 being formed in a slot 12 of that part of the slide 4 which has the locking cams 8 .
  • the toggle 5 is provided with a handle 13 on the upper side.
  • the middle piece 10 On the underside, the middle piece 10 carries a locking part 14; This locking part 14 has different dimensions in the longitudinal and transverse directions, so that the locking part 14 engages under the two catches 6 in the locking position according to FIG. 18, whereas it is dimensioned in its release position rotated by 90 ° in such a way that no grip is present.
  • the slide 4 is provided with a bearing bore 15 into which a bearing pin 16 of a turning holder 17c engages, which is thus rotatably mounted on the slide 4.
  • This turning holder 17c is provided on the underside facing away from the bearing journal 16 with two journals 18 and 19 with different diameters.
  • These pins 18 and 19 each serve to receive a hole which is formed in the knife blade M to be used in each case.
  • the pin 18 has a diameter of 7.1 and the pin 19 has a diameter of 5.2 mm, so that different knife blades M can be held on the turning holder 17c, depending on which of the pins 18 and 19 has been brought into the receiving position .
  • the guide surfaces 21 of which run parallel to the longitudinal extension of the turning holder 17c are guided in the blade channel 22 of the housing 1, which can best be seen in FIG .
  • this blade channel there is also the knife blade M, which is held with its hole, which cannot be seen in the drawing, on one of the two pins 18 or 19 of the turning holder 17c.
  • the turning holder 17c is further fixed in its respective end position on the slide 4 by longitudinal guide webs 23 which are formed on the slide 4 and between which the turning holder 17c is held non-rotatably.
  • These guide webs 23 can be seen in FIGS. 8 to 12.
  • an additional channel 24 is formed in the housing 1 parallel to the guide channel 7 for the slide 4 and to the blade channel 22 and can be used for storing spare blades.
  • This additional channel 24 is closed together with the guide channel 7 and blade channel 22 by the closure cap 3 which can be placed on the rear end of the housing 1.
  • the closure cap 3 is first removed. Then the gag 5 is rotated by means of its handle 13 such that the grip of the locking part 14 under the catch 6 is lifted.
  • the gripping piece 13 standing transversely in FIGS. 2 and 5 is rotated by 90 ° in this case and extends with its main extent parallel to the longitudinal direction of the housing 1.
  • the slide 4 can be pushed back out of the housing 1, since the two locking cams 8 can spring out of the recesses of the detents 6 due to the elasticity of the slide part carrying them. In this way, the slide 4 can be removed from the housing 1 together with the toggle 5 and the turning holder 17c. Outside the housing 1, a knife blade M possibly held on the turning holder 17c can be removed from the turning holder 17c.
  • the knife blade M now to be used is placed with its hole on one of the two pins 18 or 19 of the turning holder 17c, specifically on the pin 18 or 19 lying in front. If the diameter of the pin 18 or 19 lying in front is not with the hole of the knife blade M to be used, the turning holder 17c with its bearing pin 16 is lifted slightly out of the bearing bore 15 of the slide 4, so that it is outside the guide webs 23 formed on the slide 4. In this position, the turning holder 17c can be rotated through 180 °, so that the pin 18 or 19 required in each case is at the front.
  • the new knife blade M is now placed on these pins 18 and 19.
  • the blade with the slide 4, the toggle 5 and the turning holder 17c is then pushed into the housing 1, the knife blade M and the turning holder 17c being in the blade channel 22, whereas the slide 4 is essentially in the guide channel 7. Since the gag 5 with its locking part 14 does not engage under the catches 6, the slide 4 can be pushed into the housing 1 until the tip of the knife blade M emerges from the front slot 2 of the housing 1. In the desired position, the slide 4 is then locked with the knife blade M by turning the toggle 5 through 90 °.
  • Both the housing 1 and the slide 4 with toggle 5 and turning holder 17c are preferably made of a suitable one Made of plastic, as is the closure cap 3.
  • the housing 1 is provided with a hanging opening 25 in the exemplary embodiment.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Knives (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Claims (10)

  1. Couteau pour lames de coupe (M) interchangeables, comprenant un carter (1) et un coulisseau (4), qui est guidé de manière à pouvoir coulisser longitudinalement dans le carter (1), qui peut être fixé selon des intervalles prédéterminés d'un ensemble à crans d'encliquetage (6) réalisé sur le carter (1), et sur lequel la lame de coupe (M) est maintenue de manière interchangeable, au moyen d'un tenon (18, 19) s'engageant dans un trou de la lame de coupe (M), la lame de coupe (M) considérée étant maintenue sur le coulisseau (4) au moyen d'un support (17a, 17b), qui est pourvu d'un tenon (18 ou 19) correspondant au trou de la lame de coupe (M) considérée, et qui est monté de manière interchangeable sur le coulisseau (4), caractérisé en ce que le support est réalisé en tant que support à retournement (17c), qui est monté de manière à pouvoir tourner de 180° sur le coulisseau (4) et qui est pourvu, à chaque extrémité, d'un tenon (18, 19), dont les diamètres sont de grandeur différente, conformément aux différentes lames de coupe (M) usuelles du commerce.
  2. Couteau selon la revendication 1, caractérisé en ce que le support à retournement (17c) est pourvu, à l'extrémité, d'une nervure transversale (20) dont les surfaces de guidage (21) s'étendant parallèlement à l'étendue longitudinale, s'appuient sur les surfaces de guidage correspondantes du canal de lame (22).
  3. Couteau selon la revendication 1 ou 2, caractérisé en ce que le support à retournement (17c) est pourvu d'un tourillon de palier (16) par lequel il est positionné dans un alésage de palier (15) correspondant, du coulisseau (4).
  4. Couteau selon les revendications 1 à 3, caractérisé en ce que le support à retournement (17c) est bloqué en rotation sur le coulisseau (4), par des nervures de guidage (23) s'étendant longitudinalement.
  5. Couteau selon l'une au moins des revendications 1 à 4, caractérisé en ce que le coulisseau (4) est pourvu, sur son côté inférieur, d'au moins un ergot d'encliquetage (8) qui s'engage dans un ensemble à crans d'encliquetage (6) réalisé sur le carter (1), en face du côté inférieur du coulisseau (4), ensemble à crans d'encliquetage duquel peut s'échapper l'ergot d'encliquetage (8) en raison de l'élasticité du coulisseau (4), et sur lequel l'ergot d'encliquetage (8) peut être bloqué au moyen d'un organe de blocage (5).
  6. Couteau selon la revendication 5, caractérisé en ce que l'organe de blocage est formé par une manette (5) qui est montée de manière tournante sur le coulisseau (4), qui dans la position de blocage, chevauche l'ensemble à crans d'encliquetage (6) par le dessous en évitant ainsi un déport de l'ergot d'encliquetage (8) sur l'ensemble à crans d'encliquetage (6) en raison de l'élasticité du coulisseau (4), et qui dans la position de déblocage est dimensionnée de manière à ce qu'il ne subsiste pas de chevauchement.
  7. Couteau selon la revendication 6, caractérisé en ce que la manette (5) comporte une partie centrale (10) cylindrique, par laquelle la manette (5) peut être insérée dans une fente (12) du coulisseau (4), pourvue de zones de palier (11) présentant une forme de tronçon circulaire.
  8. Couteau selon l'une des revendications 5 à 7, caractérisé en ce que sont prévus deux ensembles à crans d'encliquetage (6) opposés.
  9. Couteau selon l'une au moins des revendications 1 à 8, caractérisé en ce que parallèlement au canal de lame (22) est formé, dans le carter (1), un canal (24) supplémentaire pour le rangement de lames de rechange.
  10. Couteau selon l'une au moins des revendications 1 à 9, caractérisé en ce que le carter (1), à son extrémité éloignée de la fente frontale (2), peut être fermé par un capuchon (3) fermant aussi bien le canal de lame (22) que le canal supplémentaire (24).
EP90102850A 1990-02-14 1990-02-14 Couteau à lames interchangeables Expired - Lifetime EP0442004B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE90102850T DE59005203D1 (de) 1990-02-14 1990-02-14 Messer für auswechselbare Messerklingen.
AT90102850T ATE103525T1 (de) 1990-02-14 1990-02-14 Messer fuer auswechselbare messerklingen.
EP90102850A EP0442004B1 (fr) 1990-02-14 1990-02-14 Couteau à lames interchangeables
DK90102850.6T DK0442004T3 (da) 1990-02-14 1990-02-14 Kniv til udskiftelige klinger
ES90102850T ES2052987T3 (es) 1990-02-14 1990-02-14 Cortador de cuchilla para hojas de cuchilla recambiables.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP90102850A EP0442004B1 (fr) 1990-02-14 1990-02-14 Couteau à lames interchangeables

Publications (2)

Publication Number Publication Date
EP0442004A1 EP0442004A1 (fr) 1991-08-21
EP0442004B1 true EP0442004B1 (fr) 1994-03-30

Family

ID=8203648

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90102850A Expired - Lifetime EP0442004B1 (fr) 1990-02-14 1990-02-14 Couteau à lames interchangeables

Country Status (5)

Country Link
EP (1) EP0442004B1 (fr)
AT (1) ATE103525T1 (fr)
DE (1) DE59005203D1 (fr)
DK (1) DK0442004T3 (fr)
ES (1) ES2052987T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5997202A (en) * 1996-02-28 1999-12-07 Colgate-Palmolive Company Package for stick product
EP1100656A4 (fr) * 1998-07-31 2003-01-02 American Safety Razor Couteau universel a retraction automatique a ressort
DE10308503B4 (de) * 2003-02-26 2007-01-25 Haniel Baustoff-Industrie Technologie- Und Forschungs-Gmbh Zweischalinge Wand eines Gebäudes und Verfahren zur Verbesserung der Schalldämmung von zweischalligen Wänden

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2348021A1 (fr) * 1976-04-17 1977-11-10 Beermann Kg Martor Argentax Couteau muni d'une lame secable en feuillard d'acier predivisee en segments detachables
GB1585642A (en) * 1978-01-25 1981-03-11 Stanley Tools Ltd Retractable blade knife
DE3121400C2 (de) * 1981-05-29 1983-02-24 Schlipköter, Michael Schneidwerkzeug mit auswechselbarer Klinge

Also Published As

Publication number Publication date
DE59005203D1 (de) 1994-05-05
EP0442004A1 (fr) 1991-08-21
ATE103525T1 (de) 1994-04-15
ES2052987T3 (es) 1994-07-16
DK0442004T3 (da) 1994-08-08

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