EP0955133A1 - Couteau pour pose - Google Patents

Couteau pour pose Download PDF

Info

Publication number
EP0955133A1
EP0955133A1 EP99107820A EP99107820A EP0955133A1 EP 0955133 A1 EP0955133 A1 EP 0955133A1 EP 99107820 A EP99107820 A EP 99107820A EP 99107820 A EP99107820 A EP 99107820A EP 0955133 A1 EP0955133 A1 EP 0955133A1
Authority
EP
European Patent Office
Prior art keywords
ring
base body
laying
knife according
pins
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99107820A
Other languages
German (de)
English (en)
Other versions
EP0955133B1 (fr
Inventor
Bernd Reddig
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.)
Reddig GmbH
Original Assignee
Reddig GmbH
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 Reddig GmbH filed Critical Reddig GmbH
Publication of EP0955133A1 publication Critical patent/EP0955133A1/fr
Application granted granted Critical
Publication of EP0955133B1 publication Critical patent/EP0955133B1/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
    • B26B5/005—Hand knives with one or more detachable blades specially adapted for cutting cardboard, or wall, floor or like covering materials

Definitions

  • the invention relates to a laying knife with interchangeable knife blades.
  • the laying knife is made up of two shells that are hinged together. The knife blades are picked up within the shells at one end of the knife and stored so that part of the blade protrudes from the knife. The laying knife is locked against unintentional opening after inserting the blade.
  • Laying knives are used to cut various materials, such as carpets, PVC carpeting, all kinds of plastics, paper and the like.
  • the blades used for cutting are subject to heavy wear and often have to be replaced.
  • the knife To change the blade, the knife must be opened and closed again, as a rule the blades are stored in the cavity of the laying knife, that is between the two shells.
  • the loose blade holder harbors dangers when changing which can lead to injuries.
  • the closure of such knives is usually secured by screwing the two shells together. It is known to articulate the two shells at the rear end so that their length can be folded apart.
  • a screw thread in one shell serves to close the shells, a screw with a knurled head being inserted in the other shell. By unscrewing the knurled screw, the connection between the shells is removed and restored by screwing in. (Europe Patent 0 196 437).
  • Such a screw connection offers the desired strength for holding the knife blades for each work step, but it can be often not easy to solve, so tools are required. It also takes a lot of time to open and close the door.
  • the screw's knurled wheel is located either in the middle between the two shells, protruding, or on the outside of a shell. In any case, the edge wheels are disruptive when reaching around the knife because they require a diameter which is larger than the knife cross-section for actuation. In addition, when changing the blade, the knife with the bowl receiving the blade must be held down to prevent the blade from falling out.
  • the invention has for its object to provide an interchangeable quick-release fastener which has sufficient strength and through which a blade change can be carried out quickly and safely and which has no disruptive protruding parts.
  • the solution to the problem is contained in the inventive features of the characterizing parts of the claims.
  • the advantage of the inventive solution lies in the fact that the closure is additionally secured and more effective by the gripping by hand during the working process.
  • the laying knife consists of two shells, namely the upper shell 1 and the lower shell 2. These two shells 1 u. 2 are connected to one another in an articulated manner, expediently by means of a connecting joint 5.
  • This connecting joint 5 consists of thickenings in the form of knobs attached to the bearing shells, which are arranged so that the connections of one shell lie between those of the other shell. A continuous bore runs through this connection. A pin is pressed resiliently into this hole, around which the shells rotate and can thus be opened and closed.
  • a known snap mechanism can also be arranged, in which one shell has two pins which snap into corresponding resilient grooves in the other shell.
  • the two knife bowls 1 u. 2 engage through side guides when folded so that lateral rotation is excluded.
  • the two shell ends which do not form the fulcrum, are provided with a blade holder 4 for the knife blade 3, so that it can be easily inserted and fixed in the opened state of the laying knife.
  • the closure of the two shells is formed by a closing element which is interchangeable and can be replaced immediately in the event of damage.
  • the closing element is inserted into the upper shell 1 in a recess 6 provided for this purpose and latched and rotated about an axis by a lever effect, whereby a pawl attached to the closing element snaps into a clasp firmly anchored in the lower shell.
  • the closing element consists of a base body 9, which preferably has a rectangular cross section and which is equipped with two pins 10 in the middle over its length. These pins 10 can be guided in a bore made centrally in the longitudinal direction of the base body by being press-fitted into the bore and protruding a few millimeters on both sides.
  • a ring 11 is assigned to the base body 9 as a lever, which rests laterally on the base body and ends with the upper edge of the base body. Below the base body 9 is in the right Angle to the ring 11, a spring clip 12 made of elastic and / or resilient material is firmly attached.
  • This spring clip 12 which has the function of a pawl, is almost circular and / or elliptical in shape and forms a circular and / or elliptical arc of slightly more than half of the closed arc.
  • the open end of this spring clip is closed longitudinally by a bead 13.
  • the closing element can also be designed as an element that is open on one side.
  • the base body 9 is provided vertically and centrally with a continuous gap, which also separates the pin 10 and the ring 11. This gap causes the two pins 10 to be compressible.
  • the spring clip 12 is so elastic that it follows this movement.
  • the base body 9a is provided with a continuous gap 17 in the center. Instead of a spring clip, the base body directly forms two slide clips 18, 19, the slide clips being made in one piece with the base body. A plastic that has elasticity in itself is preferred here. In the walls of the base body 9a, which delimit the gap 17, two grooves 20, 21 are made, into which an expanding wedge 22 can be inserted. This expansion wedge prevents the base body from being pressed together unintentionally and thus jumping out of its engagement.
  • the expanding wedge 22 is inserted into the grooves 20, 21.
  • the expansion wedge 22 corresponds exactly in its dimensions to the mass of the grooves 20, 21, so that it completely fills the space between the grooves.
  • the expansion wedge 22 is provided at its front end with two beads 23 and at its rear end with a thickening 26. Between the two beads 23, a slot 24 is made in the expansion wedge, through which the two bead webs 25 are given elasticity so that they can be easily pressed together. If the expanding wedge 22 is inserted between the grooves 20, 21, then it slides up to its stop with its thickening 26 against the base body. As a result, it is inserted so far that the two beads 23 slide out of the groove part of the base body and are spread outwards. The expansion wedge is now firmly seated in the base body and can only be released again by pressing its two beads together.
  • the recess 6 is made in the upper shell 1 of the laying knife.
  • the cut-out 6 expediently begins approximately in half the longitudinal direction of the laying knife and then directed towards the cutting edge. This is the part of the laying knife that is gripped by hand during the work process.
  • This recess 6 is so large that the ring 11 of the closing element has space therein.
  • two guides 16 are arranged on the left and right in the area of the recess 6, which are approximately U-shaped, the upper part of the U having a smaller cross-sectional opening with corresponding elasticity.
  • the pin 10 of the closing element can be pressed in such a way that the pin 10 is fixed but rotatably mounted therein.
  • the guide 16 can also be introduced at an angle, so that acting forces do not allow the pins 10 to slide out of the guide 16.
  • an overlay 15 can also be provided in the shell 1 on the left and right of the recess 6, onto which the ring 11 is placed laterally when it snaps into place and thus cannot be pressed into the cavity below. If a closing element provided with a gap is used, the guide 16 is provided in the form of a blind hole into which the pins 10 can be inserted by being compressed.
  • two raster webs 7 are arranged as a clasp, which protrude perpendicularly from the inner shell. These two grid webs 7 are bridged above by a grid bracket 8, namely at a precisely defined height, so that a space is created between the grid bracket 8 and the bottom of the shell 2.
  • the distance between the two grid bars is to be selected so that the spring clip 12 slides in its entire width between the two grid bars and under the grid bracket 8.
  • the pivot point around the The imaginary axis of rotation of the pins 10 is offset from the center line through the grid bracket 8, in the direction of the front end of the laying knife opposite the joint 5.
  • the function of the lock is described as follows. If the closing element with its two pins 10 is inserted into the guide 16, the base body 9 can be rotated about the pins 10. If the ring 11 is now pulled up with a finger, the base body 9 rotates about the imaginary axis of the pin 10, whereby the spring clip 12 swings backwards in the direction of the shell joint. Now the two shells 1 u. 2 folded and the ring 11 pressed into the upper shell 1. So that the base body 9 is rotated again, with which the spring clip 12 slides with its bead 13 under the grid bracket 8 and presses firmly against the grid bracket 8 due to the spring action. The bead 13 additionally prevents the spring clip 12 from being able to return without any effort. By displacing the pivot point of the pin 10 with respect to the locking bracket 8, this closing action is further supported. The bowls 1 u. 2 are firmly connected.
  • the laying knife is gripped by hand so that the ring 11 lies in the palm of the hand and is therefore firm and immovable.
  • the ring 11 is raised again with a finger and guided to the front, as a result of which the spring clip 12 with its bead 13 slides out from under the grid web 8 and releases the closure.
  • the inner diameter of the ring 11 is accordingly to be chosen so that a finger can be easily inserted. Since the space below the ring 11 is a cavity, the ring can be guided well.
  • the closure element with its ring 11 can be in each of the two shells 1 u. Insert 2 so that the laying knife can be made for both right-handed and left-handed users.
  • the interior space between the two shells is so large, also due to the closure element, that a large blade receiving space is available behind the closure element towards the hinge point of the shells.
  • a blade block 14 for Inclusion of blades provided, in which the blades are preferably inserted vertically in the shell. The blades can be stored either loose or in a dispenser.
  • the closing element has so far been described with a ring guide.
  • a bow-shaped element can also be attached to the base body 9, which extends exactly over the shell 1, rests on it and surrounds it laterally. The bow-shaped element must then be raised to open and close.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Knives (AREA)
  • Harvester Elements (AREA)
EP99107820A 1998-05-05 1999-04-20 Couteau pour pose Expired - Lifetime EP0955133B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19819915 1998-05-05
DE19819915A DE19819915A1 (de) 1998-05-05 1998-05-05 Verlegemesser

Publications (2)

Publication Number Publication Date
EP0955133A1 true EP0955133A1 (fr) 1999-11-10
EP0955133B1 EP0955133B1 (fr) 2000-12-20

Family

ID=7866657

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99107820A Expired - Lifetime EP0955133B1 (fr) 1998-05-05 1999-04-20 Couteau pour pose

Country Status (4)

Country Link
US (1) US6131292A (fr)
EP (1) EP0955133B1 (fr)
AT (1) ATE198175T1 (fr)
DE (2) DE19819915A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6158133A (en) * 1998-12-23 2000-12-12 Fiskars Inc. Oval cutter
US6484406B1 (en) 1998-08-26 2002-11-26 Alterra Holdings Corporation Hand-held cutting devices

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6574872B2 (en) 2001-05-04 2003-06-10 The Stanley Works Utility knife
US20050193566A1 (en) * 2003-11-10 2005-09-08 Brown Donald A. Utility knife
US20050252010A1 (en) * 2004-05-17 2005-11-17 Fiskars Brands, Inc. Exchangeable blade knife
US7389587B2 (en) * 2005-09-08 2008-06-24 Helen Of Troy Limited Utility knife
US20070256310A1 (en) * 2006-05-02 2007-11-08 Pool Dan B Utility Knife With Cam Clamping Means
US7814664B2 (en) * 2007-05-21 2010-10-19 Irwin Industrial Tool Company Folding utility knife
US8413338B2 (en) 2009-07-14 2013-04-09 Fiskars Brands, Inc. Folding knife with safety and wedge lock
USD639632S1 (en) 2009-10-02 2011-06-14 Fiskars Brands, Inc. Knife handle
USD614933S1 (en) 2009-10-02 2010-05-04 Fiskars Brands, Inc. Knife handle
USD636051S1 (en) 2010-08-31 2011-04-12 Fiskars Brands, Inc. Knife handle
USD636053S1 (en) 2010-08-31 2011-04-12 Fiskars Brands, Inc. Knife handle
USD638904S1 (en) 2010-08-31 2011-05-31 Fiskars Brands, Inc. Knife handle
USD636052S1 (en) 2010-08-31 2011-04-12 Fiskars Brands, Inc. Knife handle
USD661367S1 (en) 2011-05-12 2012-06-05 Fiskars Brands, Inc. Knife handle
US8893389B2 (en) 2011-05-31 2014-11-25 Fiskars Brands, Inc. Cantilever spring assist knife

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0196437A2 (fr) 1985-03-27 1986-10-08 REDDIG, Bernd Couteau pour pose, en particulier couteau à tailler des tapis
US4936014A (en) * 1989-04-06 1990-06-26 Johnson Level And Tool (Canada) Inc. Utility knife
EP0462334A1 (fr) * 1990-06-18 1991-12-27 The Stanley Works Limited Couteau à lame échangeable
DE29711084U1 (de) * 1997-06-25 1997-09-25 Chung, Yen-chao, Taipeh/T'ai-pei In der Hand haltbares Schneidegerät

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0714853Y2 (ja) * 1990-10-17 1995-04-10 フェザー安全剃刀株式会社 トリミングハンドル
US5864952A (en) * 1997-01-02 1999-02-02 Lutz File & Tool Company Knife for woodworking
US5940970A (en) * 1997-08-07 1999-08-24 Le-Jo Enterprises, Inc. Utility knife
TW365215U (en) * 1997-12-31 1999-07-21 Jian-Chiuan Jau Utility knife structure improvement

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0196437A2 (fr) 1985-03-27 1986-10-08 REDDIG, Bernd Couteau pour pose, en particulier couteau à tailler des tapis
US4936014A (en) * 1989-04-06 1990-06-26 Johnson Level And Tool (Canada) Inc. Utility knife
EP0462334A1 (fr) * 1990-06-18 1991-12-27 The Stanley Works Limited Couteau à lame échangeable
DE29711084U1 (de) * 1997-06-25 1997-09-25 Chung, Yen-chao, Taipeh/T'ai-pei In der Hand haltbares Schneidegerät

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6484406B1 (en) 1998-08-26 2002-11-26 Alterra Holdings Corporation Hand-held cutting devices
US7010860B2 (en) 1998-08-26 2006-03-14 Alterra Holdings Corporation Hand-held cutting device
US6158133A (en) * 1998-12-23 2000-12-12 Fiskars Inc. Oval cutter

Also Published As

Publication number Publication date
DE19819915A1 (de) 1999-11-11
ATE198175T1 (de) 2001-01-15
US6131292A (en) 2000-10-17
EP0955133B1 (fr) 2000-12-20
DE59900027D1 (de) 2001-01-25

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