EP3698928A1 - Dispositif de lame et couteau pourvu de dispositif de lame - Google Patents

Dispositif de lame et couteau pourvu de dispositif de lame Download PDF

Info

Publication number
EP3698928A1
EP3698928A1 EP20158515.5A EP20158515A EP3698928A1 EP 3698928 A1 EP3698928 A1 EP 3698928A1 EP 20158515 A EP20158515 A EP 20158515A EP 3698928 A1 EP3698928 A1 EP 3698928A1
Authority
EP
European Patent Office
Prior art keywords
blade
carrier
locking
locking means
recess
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
EP20158515.5A
Other languages
German (de)
English (en)
Other versions
EP3698928B1 (fr
Inventor
Martin Rohrbach
Kerry Henn
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.)
Martor KG
Original Assignee
Martor 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 Martor KG filed Critical Martor KG
Publication of EP3698928A1 publication Critical patent/EP3698928A1/fr
Application granted granted Critical
Publication of EP3698928B1 publication Critical patent/EP3698928B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B1/00—Hand knives with adjustable blade; Pocket knives
    • B26B1/02—Hand knives with adjustable blade; Pocket knives with pivoted blade
    • B26B1/04—Hand knives with adjustable blade; Pocket knives with pivoted blade lockable in adjusted position
    • B26B1/046—Hand knives with adjustable blade; Pocket knives with pivoted blade lockable in adjusted position with a locking member acting in axial direction parallel to the pivot axis of the blade
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B1/00—Hand knives with adjustable blade; Pocket knives
    • B26B1/08—Hand knives with adjustable blade; Pocket knives with sliding blade
    • 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
    • B26B5/003—Hand knives with one or more detachable blades with blades being slid out of handle immediately prior to use comprising retraction means for the blade or the blade holder

Definitions

  • the invention relates to a blade device which comprises a blade carrier and a blade.
  • a blade device which comprises a blade carrier and a blade.
  • Such a blade device is usually a component of knives, in particular of cutter knives.
  • the blade device comprises e.g. a blade carrier and a blade which can be releasably fastened in the blade carrier.
  • the blade carrier is provided with a blade seat with a contact surface for a first blade surface.
  • a second blade surface opposite the first blade surface is essentially openly accessible or rests against a contact surface of the blade cover.
  • the blade carrier has a holding device for holding the blade in the blade seat, which comprises first form-locking means assigned to the blade carrier and second form-locking means assigned to the blade, which hold the blade in a form-locking manner at least in a plane parallel to the contact surface.
  • the interlocking means are designed in such a way that the blade has at least one degree of freedom in one direction in order to be released from the blade seat.
  • the blade can e.g. be mounted between a contact surface of the blade carrier and a contact surface of a blade cover held on the blade carrier.
  • a blade cover can not be provided, so that a blade surface of the blade rests against a contact surface of the blade carrier and the opposite blade surface is exposed.
  • the holding device comprises a locking device with at least one locking element movable between a locking position and a release position, which engages over an area of the second blade surface or the blade cover and locks a movement of the blade in the direction of the degree of freedom.
  • a movement of the blade out of the blade seat is not possible in the locking position of the locking device because of the degree or degrees of freedom the blade can be locked by the latch.
  • the locking device is held, for example, on the blade carrier.
  • the latch can directly overlap at least one area of the second blade surface or overlap at least one area of a blade cover, the blades between
  • the first form-locking means and the second form-locking means are e.g. designed such that the blade has only one degree of freedom in the pivoting direction.
  • the latch can e.g. are in contact with the blade at an end remote from the pivot axis, so that, due to the lever arm, low holding forces are required to hold the blade securely in its blade seat.
  • the first form-locking means have e.g. at least one projection which interacts in a form-fitting manner with a complementary recess of the second form-locking means, so that the blade with the recess can be threaded onto the projection.
  • the first form-locking means have two projections, each projection interacting with a recess in the blade in a form-locking manner.
  • the blade carrier thus has in this case e.g. two protrusions and the blade has two recesses.
  • the first interlocking means comprise e.g. at least one hook-shaped projection of the blade carrier which releasably engages through a recess of the blade and wherein the shape of the recess corresponds approximately to the cross section of the hook-shaped projection.
  • the blade is e.g. releasably arranged between a surface of the projection facing the second blade surface and a contact surface of the blade carrier.
  • the blade is detachably arranged between a holding surface of the projection facing the second blade surface and a contact surface of the blade carrier.
  • the locking element is designed as a wire or sheet metal.
  • the bar offers a small area for the deposition of particles that could impair the function of the knife.
  • the terms “wire” or “sheet metal” are to be understood in the sense of the invention in such a way that they can consist of a metal, but that other materials, such as plastics or composites, can also be considered.
  • Essential are the properties according to which, for example, a small deposit area is formed and / or according to which the material has good spring properties, as is the case, for example, with certain metals.
  • the latch is e.g. designed as a spring.
  • the bolt is formed by a first leg of a torsion spring.
  • the bar comprises e.g. a locking area and a storage area, wherein the storage area is movably mounted in a bearing receptacle of the blade carrier.
  • the storage area is pivotably mounted in the bearing mount.
  • the storage area is e.g. formed by a second leg of a torsion spring which is pivotally held in a bearing seat of the blade carrier.
  • the latch is e.g. is releasably engageable with a receptacle which is held on the blade carrier.
  • the receptacle has a seat for the locking element.
  • the latch is e.g. held in such a way that it cannot accidentally come out of the seat.
  • a portion of the latch is locked in the seat.
  • the bolt is loaded into the seat due to a spring force.
  • the receptacle is provided with an inclined surface which, when the bolt is moved into the seat, deflects a force acting on the bolt element in a first direction in a second direction which is directed orthogonally to the second blade surface.
  • the force can e.g. be formed by a spring force. In this way, the blade is loaded by the bolt against the contact surface of the blade seat.
  • the projection forms, for example, at the same time the receptacle for the locking element when it is arranged in the locking position. In this case, no separate element has to be generated for the seat of the locking element. In this way, space can also be kept free for structural elements on the blade carrier.
  • the locking element In the locking position, e.g. the locking element passes through the blade or through a recess in the blade and rests against the second blade surface.
  • the invention also relates to a knife with a blade device according to the first aspect of the invention.
  • the knife comprises e.g. a gear with a first gear part and a second gear part movable relative to the first gear part to a blade device between a rest position in which a blade of the blade device is moved relative to a guard that the user does not come into contact with a cutting edge of the blade and an operating position in which the blade is moved relative to the guard in such a way that a cutting operation is possible.
  • a knife in total according to Fig. 1 is denoted by the reference number 10 in the figures.
  • the knife 10 comprises a first gear part 11 and a second gear part 12.
  • the first gear part 11 and the second gear part 12 are part of a gear 13 with which a blade device 40 comprising a blade carrier 14 and a blade 17 can be moved between a rest position and an operating position .
  • the rest position is in Fig. 1 shown. Due to a movement of the second gear part 12 in the direction u1 about a pivot axis a1 relative to the first gear part 11, the blade carrier 14 can be pivoted from the rest position into an operating position.
  • the operating position is in Fig. 2 shown. From the rest position according to Fig. 1 the second gear part 12 can be moved relative to the first gear part 11 in the direction u2, the knife 10 in a blade changing position according to FIG Fig. 3 is moved. In the blade change position, the blade carrier 14 is accessible and a blade change can be carried out.
  • the blade carrier 14 comprises according to Fig. 4 a rear extension 15 for articulated mounting on the gearbox 13. To form the swivel joints, the extension 15 has openings 19a and 19b.
  • the blade carrier 14 comprises a blade seat 16 for Fastening of a blade 17 which is provided with a cutting edge 18 and comprises a first blade surface 43 and a second blade surface 44 opposite the first blade surface 43.
  • the blade 17 is detachably attached to the blade carrier 14 by means of a locking device 30.
  • projections 21 and 22 are held, which in the present embodiment are cut out of the blade carrier 14 and protruded from a plane E, which is an x / z direction, of the blade seat, so that they have an area protruding in the direction y1 and have a region which is formed parallel to the plane E.
  • the projections 21 and 22 reach through recesses 23 and 24 in the blade 17.
  • the projection 22 forms a seat 45.
  • a region 31 of the projection 21 extending parallel to the plane E has a width K1 which is greater than the width K2 of the opening 23.
  • the cross section of the projection 21 corresponds approximately to the dimensions of the recess 23 in the x-direction and z-direction or is slightly smaller. For this reason, the blade 17 cannot be easily detached from the projection 21 in the direction y1. Rather, a pivoting movement of the blade in direction v1 is required for this purpose Fig. 5 necessary.
  • the recess 24 in the blade is designed in such a way that the blade 17 can be moved over the area 32 of the projection 22 when pivoting in the direction v1.
  • the pivot guide is predetermined by the shape of the projection 21.
  • the latch is formed by a leg 27 of a spring 25, the other leg 26 of which is held pivotably in a bearing device 35 of the blade carrier 14.
  • the bearing device 35 comprises an extension 36 of the blade carrier 14 (see e.g. Fig. 8 ) from which two arms 29a and 29b protrude in the direction y1.
  • An opening 37a is formed in the arm 29a and an opening 37b is formed in the arm 29b.
  • the openings 37a and 37b are aligned with one another.
  • the leg 26 extends through the openings 37a and 37b, so that a pivot axis a2 is formed, about which the spring 25 can be pivoted.
  • An end region 38 of the leg 26 is bent approximately at right angles to the longitudinal extension of the leg 26 in such a way that the spring 25 cannot be detached from the bearing device 35.
  • a coiled central area 39 of the spring 25 prevents movement of the spring in the direction x2 through contact with the arm 29a.
  • An end region 41 of the spring leg 27 is bent over in such a way that it can be easily grasped so that it can easily be operated by the user.
  • the spring leg 27 is subject to a bias about a pivot axis a3 of the spring 25 in the direction w1 in engagement with the projection 22. Due to a movement of the leg 27 against the spring force in the direction w2 and a subsequent pivoting about the pivot axis a2 in the direction p1 in the Figures 10 to 13 position shown, the lock can be released so that the blade 17 can be removed from the blade seat 16.
  • the blade 17 In the unlocked position according to the Figures 10 to 13 the blade 17 has only one degree of freedom in the pivoting direction v1. The blade can then be removed from the blade seat 16 by pivoting in direction v1 and, if necessary, replaced by another blade 17.
  • the blade 17 can be reassembled according to Figure 14a brought the recess 23 into engagement with the projection 21 and the The blade 17 is then pivoted onto the projection 21 in the direction v2 (see FIG Figure 14b and 14c ) until the projection 22 reaches through the recess 24 and the first blade surface 43 comes into contact with the contact surface 42.
  • leg 27 of the spring 25 is pivoted about the axis a2 in the direction p2 and locked in the seat 45 of the projection 22 by the leg 27 is pivoted slightly against the force of the spring 25 in the direction w2 and then in the direction w1 in the seat 45 is introduced.
  • the holding device 20 according to the invention with the locking device 30 is not susceptible to contamination, since there are hardly any structural designs, such as undercuts, angles, etc., which favor the accumulation of particles.
  • FIGS Figures 16-22 A second embodiment of a blade device 140 is shown in FIGS Figures 16-22 shown. Since the knife can be designed essentially as in the first exemplary embodiment, with the exception of the blade device 140, the remaining parts are not described.
  • the blade device 140 comprises a blade carrier 114 and a blade cover 129.
  • a longitudinal center axis of the blade device 140 is denoted by m.
  • the blade carrier 114 and the blade cover 129 are parts of a holding device 120 for a blade 117 Fig. 16 the blade carrier 114 comprises a rear extension 115 on which bearing journals 119a and 119b are formed.
  • the blade carrier 114 is provided with a blade seat 116 which comprises a contact surface 142 of the blade carrier 114.
  • Pins 121 and 122 protrude from the blade carrier 114.
  • the pin 121 has a notch 136.
  • a bearing area 137 of the blade carrier 114 is provided for the pivotable mounting of the blade cover 129.
  • the blade 117 comprises a cutting edge 118 and two recesses 123 and 124.
  • the blade 117 is e.g. designed as a steel strip blade or as a ceramic blade.
  • a blade surface 143 of the blade 117 cooperates with the contact surface 142 and a blade surface 144 of the blade 117 cooperates with a contact surface 141 of the blade cover 129 when the blade 117 is in the locking position in the blade seat 116.
  • a spring 125 which in the present example is designed as a torsion spring, is part of a locking device 130. It has two end regions 126 and 127.
  • the spring 125 is mounted on the blade device 140 by means of a bearing device 135.
  • a bearing area 128 is provided on the blade cover 129, which is designed as a bearing pin 131 and is arranged coaxially to the coiled area of the torsion spring.
  • the end region 127 is supported with prestress on a stop 132 of the blade cover 129.
  • the blade cover 129 also comprises a projection 133 with a link 134, which is designed here in the form of an opening in the projection 133 and which is provided to limit the movement of the end region 127 of the spring 125.
  • the backdrop could also be omitted.
  • the blade cover 129 forms a contact surface 141, which in FIG Fig. 22 can be seen.
  • the blade cover 129 can move in the direction o2 from the open position according to FIG Figures 18 and 19 around a Pivot axis a4 in the closed position according to Figures 17 and 20 through 22, in which the projection 121 reaches through a recess 138 in the blade cover 129. Due to the bias of the spring 125, the end region 127 rests against an upper end region 139 of the link 134. The end area of the link 134 opposite the end area 139 is denoted by 145.
  • the end region 127 By deflecting the end region 127 slightly in the direction n1, it can be inserted into the notch 136.
  • the locking device 130 is then in the locking position, i. the blade cover 129 is prevented from moving in the direction o1 into the open position by means of the end region 127 acting as a bolt.
  • the end region 127 extends over a region of an outer surface 146 of the blade cover 129 and rests against the outer surface 146.
  • the notch 136 is arranged on the projection 121 in such a way that the end region 127 has to be moved against spring force in the direction n1 in order to move it out of the notch 136. In this way, the end region 127 does not inadvertently disengage from the notch 136.
  • the notch 136 is designed in such a way that it forms a movement converter, so that the spring force exerted by the end region 127 is partially deflected in the direction n2 into a force that the end region 127 in the direction y1 (see FIG Fig. 22 ) loaded, so that it exerts a force on the blade cover 129 in the direction o2.
  • the blade 117 is firmly held between the contact surfaces 142 and 141 and blades 117 with different thicknesses D can be securely fastened in the blade seat 116.
EP20158515.5A 2019-02-23 2020-02-20 Couteau pourvu de dispositif de lame Active EP3698928B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019001282 2019-02-23

Publications (2)

Publication Number Publication Date
EP3698928A1 true EP3698928A1 (fr) 2020-08-26
EP3698928B1 EP3698928B1 (fr) 2024-03-13

Family

ID=69804425

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20158515.5A Active EP3698928B1 (fr) 2019-02-23 2020-02-20 Couteau pourvu de dispositif de lame

Country Status (3)

Country Link
US (1) US11376751B2 (fr)
EP (1) EP3698928B1 (fr)
CN (1) CN111604944B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013014684A1 (de) * 2013-09-05 2015-03-05 Martor Kg Messer
DE102018117203B4 (de) * 2018-07-17 2024-02-01 Martor Kg Messer

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29600185U1 (de) * 1996-01-09 1997-05-07 Schlipkoeter Michael Dr Messer mit einer Wechselklinge
WO1999000224A2 (fr) * 1997-06-30 1999-01-07 Better Tools, Inc. Couteau universel
US20050120564A1 (en) * 2003-12-08 2005-06-09 Tsai-Lian Chen Lin Scraper
US20110197454A1 (en) * 2010-02-17 2011-08-18 Zeng min-zheng Cutter
US20140366387A1 (en) * 2013-06-13 2014-12-18 Fiskars Brands, Inc. Skinning knife with removable blade
US20150360374A1 (en) * 2014-06-17 2015-12-17 Allway Tools, Inc. Carpet cutter assembly
EP3093110A1 (fr) * 2014-01-07 2016-11-16 Hangzhou Great Star Tools Co., Ltd. Couteau universel du type à plaques

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2017895A (en) * 1935-05-27 1935-10-22 John E Davey Saw handle
US2137800A (en) * 1937-09-04 1938-11-22 Rose Gringer Saw handle and blade
US4947551A (en) * 1989-06-28 1990-08-14 David Deisch Laterally foldable lock knife
US6105260A (en) * 1998-01-23 2000-08-22 Alterra Holdings Corporation Universal saw adapter
US6112420A (en) * 1999-08-10 2000-09-05 S-B Power Tool Company Blade clamp for reciprocating saw
US7055248B2 (en) * 2004-04-30 2006-06-06 Becton, Dickinson And Company Surgical knife blade attachment and method for using same
DE102004063046B3 (de) 2004-12-22 2006-03-09 Martor Kg Messer
US7249417B2 (en) * 2005-06-22 2007-07-31 Chi-Tung Chu Pocketknife with a safety lock
US8978254B1 (en) * 2006-08-28 2015-03-17 James Dale White Exchange blade knife
CN200977657Y (zh) 2006-11-17 2007-11-21 蒋明基 一种便于更换刀片的裁切刀
DE102011007234B3 (de) * 2011-04-12 2012-09-20 Martor Kg Sicherheits-Messer
US8584367B2 (en) * 2011-06-24 2013-11-19 Hui-Tung Chu Pocketknife with an assisted opening and closing mechanism
DE102012019107B4 (de) 2012-10-02 2014-12-11 Martor Kg Messer

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29600185U1 (de) * 1996-01-09 1997-05-07 Schlipkoeter Michael Dr Messer mit einer Wechselklinge
WO1999000224A2 (fr) * 1997-06-30 1999-01-07 Better Tools, Inc. Couteau universel
US20050120564A1 (en) * 2003-12-08 2005-06-09 Tsai-Lian Chen Lin Scraper
US20110197454A1 (en) * 2010-02-17 2011-08-18 Zeng min-zheng Cutter
US20140366387A1 (en) * 2013-06-13 2014-12-18 Fiskars Brands, Inc. Skinning knife with removable blade
EP3093110A1 (fr) * 2014-01-07 2016-11-16 Hangzhou Great Star Tools Co., Ltd. Couteau universel du type à plaques
US20150360374A1 (en) * 2014-06-17 2015-12-17 Allway Tools, Inc. Carpet cutter assembly

Also Published As

Publication number Publication date
US20200276721A1 (en) 2020-09-03
CN111604944A (zh) 2020-09-01
US11376751B2 (en) 2022-07-05
CN111604944B (zh) 2022-06-17
EP3698928B1 (fr) 2024-03-13

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