EP3986680B1 - Verfahren zum herstellen von scheren und kombination aus mindestens zwei scheren - Google Patents

Verfahren zum herstellen von scheren und kombination aus mindestens zwei scheren Download PDF

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Publication number
EP3986680B1
EP3986680B1 EP20726333.6A EP20726333A EP3986680B1 EP 3986680 B1 EP3986680 B1 EP 3986680B1 EP 20726333 A EP20726333 A EP 20726333A EP 3986680 B1 EP3986680 B1 EP 3986680B1
Authority
EP
European Patent Office
Prior art keywords
scissors
blade
pair
joint
tang
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.)
Active
Application number
EP20726333.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3986680C0 (de
EP3986680A1 (de
Inventor
Torsten Kretzer
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.)
Transatlantic Sales Europe GmbH
Original Assignee
Transatlantic Sales Europe 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 Transatlantic Sales Europe GmbH filed Critical Transatlantic Sales Europe GmbH
Publication of EP3986680A1 publication Critical patent/EP3986680A1/de
Application granted granted Critical
Publication of EP3986680C0 publication Critical patent/EP3986680C0/de
Publication of EP3986680B1 publication Critical patent/EP3986680B1/de
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
    • B26B13/00—Hand shears; Scissors
    • B26B13/12—Hand shears; Scissors characterised by the shape of the handles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B13/00—Hand shears; Scissors
    • B26B13/12—Hand shears; Scissors characterised by the shape of the handles
    • B26B13/20—Hand shears; Scissors characterised by the shape of the handles with gripping bows in the handle
    • 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

Definitions

  • the invention relates to a method for producing scissors, each having a first blade and a second blade which are rotatably connected to one another by a fastening element, and to a combination of at least two such scissors.
  • the two blades of a pair of scissors are connected to each other by a fastening element, usually in the form of a screw or a rivet, so that they can rotate.
  • a fastening element usually in the form of a screw or a rivet, so that they can rotate.
  • Each blade has a front end and a rear end.
  • a front part of each blade extends towards the front end and forms a cutting element.
  • a rear part of each blade extends towards the rear end and is designed to carry a handle, which can be molded or clipped onto the rear part, for example as a plastic injection molded element.
  • the rear part usually has a groove where the two blades rub against each other as they rotate about the attachment element.
  • the rear part to which the plastic handle is attached is called the tang.
  • the design of the gear point influences the cutting behavior and the smooth running of the scissors.
  • the shape and position of the alder influence the position of the individual handles in relation to each other and thus the ergonomics of the scissors.
  • Different designs of the rear part are common depending on the size and intended use of the scissors, especially because the blades are usually manufactured and ground individually.
  • Different gear points result in different cutting behavior of the scissors.
  • Different alders have a corresponding effect on the attachment of the handle.
  • manual rework is required when manufacturing the scissors, as are different workpiece holders in the further production process, such as in the injection molding tool and in the grinding processes.
  • the invention is based on the object of providing an improved method for producing scissors and of creating scissors that are easier to produce.
  • the method according to the invention is defined by the features of patent claim 1.
  • the combination of at least two scissors according to the invention is defined by the features of patent claim 3.
  • the front part of the first blade of at least one first pair of scissors and the front part of the first blade of at least one second pair of scissors are designed differently, while the rear part of the first blade of the first pair of scissors and the rear part of the first blade of the second pair of scissors are designed identically.
  • the rear parts of the first blade of the first and second pair of scissors are designed identically.
  • the rear parts and in particular the alder of the first and second blade of a pair of scissors can be designed differently, as long as the gear points rub against one another. This also makes asymmetrical handle shapes possible. This means that scissors with differently designed cutting elements for different applications can be provided with the same handles on their rear parts and/or can be created with reproducibly identical cutting behavior with equally designed gear points.
  • the front part of the second blade of the first pair of scissors and the front part of the second blade of the second pair of scissors are designed differently, while the rear part of the second blade of the first pair of scissors and the rear part of the second blade of the second pair of scissors are designed identically.
  • the rear parts of the second blade of the first and second pair of scissors are also designed identically, while the front parts of the second blade of the first and second pair of scissors are designed differently.
  • the alder of the first blades of both pairs of scissors and the alder of the second blades of both pairs of scissors are designed identically.
  • the front part extends from the fastening element to the front end. Accordingly, the rear part extends from the fastening element to the rear end.
  • each blade in the sense of the invention is a section of the blade that extends towards the front end of the blade.
  • This can be, for example, the entire blade section from the fastening element to the front end of the blade or just a partial section thereof.
  • the rear part means a section of the blade that extends towards the rear end.
  • the rear part can be the entire blade section from the fastening element to the rear end or just a partial section thereof.
  • a rear section of the first blade of the first pair of scissors designed for attaching a handle and a corresponding section of the first blade of the second pair of scissors and possibly other pairs of scissors are designed identically in order to facilitate the manufacture of several pairs of scissors with different blades or cutting elements by allowing handles to be attached to the identical sections of the respective blades using the same tools.
  • the first blade can be the top blade or the bottom blade of the respective pair of scissors.
  • the important thing is that the second blade is the other blade of the respective pair of scissors. The second blade is therefore the bottom blade if the first blade is the top blade. Similarly, the second blade is the top blade if the first blade is the bottom blade of each pair of scissors.
  • the rear part has a tang which is designed for attaching a handle, e.g. by injection molding or attaching a plastic handle or by forging, welding or sintering a handle.
  • the tang of the first blade of the first pair of scissors is designed to be identical to the tang of the first blade of the second pair of scissors.
  • the tang of the second blade of the first pair of scissors is designed to be identical to the tang of the second blade of the second pair of scissors.
  • each blade can have a gear point, whereby the gear point of the first blade and the gear point of the second blade of each pair of scissors rub against each other when the two blades rotate against each other.
  • the gear point of the first blade of the first pair of scissors is designed to be identical to the gear point of the first blade of the second pair of scissors and/or the gear point of the second blade of the first pair of scissors is designed to be identical to the gear point of the second blade of the second pair of scissors.
  • the invention relates to a combination of at least two scissors, as defined by the features of claim 3.
  • Each of the three scissors 12, 14, 16 shown in the embodiment shown in the figures has two blades 18, 20, which are each connected to one another by a fastening element not shown in the figures in the form of, for example, a screw.
  • the fastening element is fastened through the two fastening holes 22 shown in the figures, for example screwed, whereby the two blades 18, 20 can rotate against each other in the fastened, connected state.
  • Each of the two blades 18, 20 of each pair of scissors has a front end 24 and a rear end 26 opposite the front end 24.
  • a front part 28 of each blade extends from the front end 24 to the attachment opening 22.
  • a rear part 30 of each blade 18, 20 extends from the attachment opening 22 to the rear end 26.
  • Each rear part 30 has a gear point 32 and a tang 34.
  • the gear points 32 of the two blades 18, 20 of each pair of scissors 12, 14, 16 are designed and arranged such that they rub against each other when the two blades 18, 20 rotate against each other.
  • the tang 34 is the section of each blade 18, 20 that runs between the thread 32 and the rear end 26 and has a comparatively small width and a shape that allows a handle 36 to be attached, e.g. by molding a plastic handle onto it.
  • the tang 34 of each blade 18, 20 is provided with a recess 40 that prevents the attached handle 36 from slipping.
  • Other designs of the shape of the tang 34 of the blades 18, 20 that allow a handle 36 to be attached in a suitable manner while preventing the handle 36 from slipping are also conceivable.
  • front sections 28 of the blades 18, 20 of each pair of scissors 12, 14, 16 are designed differently.
  • the front sections 28 of the first pair of scissors 12 are tapered towards the front ends 24 and are designed with almost straight edges.
  • the front sections 28 of the second pair of scissors 14 are rounded in the area of the front ends 24.
  • the front sections 28 of the third pair of scissors 16 are tapered towards the front ends 24 and are designed with curved edges.
  • each of the three scissors 12, 14, 16 has the same friction and the same friction behavior between the gear points.
  • the same or similarly designed handles 36 can be attached to the rear parts 30 of the three scissors 12, 14, 16 using the same manufacturing processes and the same manufacturing tools, e.g. by injection molding.
  • identically designed means that the size, shape, external dimensions and the course of the contour of the outer edge correspond to one another, i.e. are the same.
  • differently designed means that the size, shape, external dimensions and/or the contour of the outer edge are different, i.e. they differ from one another.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Scissors And Nippers (AREA)
EP20726333.6A 2019-06-21 2020-05-11 Verfahren zum herstellen von scheren und kombination aus mindestens zwei scheren Active EP3986680B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019116772.8A DE102019116772A1 (de) 2019-06-21 2019-06-21 Verfahren zum Herstellen von Scheren und Kombination aus mindestens zwei Scheren
PCT/EP2020/063078 WO2020254038A1 (de) 2019-06-21 2020-05-11 Verfahren zum herstellen von scheren und kombination aus mindestens zwei scheren

Publications (3)

Publication Number Publication Date
EP3986680A1 EP3986680A1 (de) 2022-04-27
EP3986680C0 EP3986680C0 (de) 2024-10-09
EP3986680B1 true EP3986680B1 (de) 2024-10-09

Family

ID=70740589

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20726333.6A Active EP3986680B1 (de) 2019-06-21 2020-05-11 Verfahren zum herstellen von scheren und kombination aus mindestens zwei scheren

Country Status (9)

Country Link
US (1) US20220258364A1 (cg-RX-API-DMAC7.html)
EP (1) EP3986680B1 (cg-RX-API-DMAC7.html)
JP (1) JP7611176B2 (cg-RX-API-DMAC7.html)
CN (1) CN113950397A (cg-RX-API-DMAC7.html)
AU (1) AU2020294813B2 (cg-RX-API-DMAC7.html)
DE (1) DE102019116772A1 (cg-RX-API-DMAC7.html)
ES (1) ES2990253T3 (cg-RX-API-DMAC7.html)
PL (1) PL3986680T3 (cg-RX-API-DMAC7.html)
WO (1) WO2020254038A1 (cg-RX-API-DMAC7.html)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD982999S1 (en) * 2021-04-20 2023-04-11 Shao Peng Chang Scissors

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3894336A (en) * 1973-11-14 1975-07-15 Johnson & Johnson Suture removal scissor
US3987542A (en) * 1975-08-22 1976-10-26 Visco Luigi P Scissors
JPS60242983A (ja) * 1984-05-16 1985-12-02 西出　博行 手動利器セツト
JPH084939Y2 (ja) * 1990-05-29 1996-02-14 株式会社サンギ 刃先交換式ハサミ
DE4237029C1 (de) * 1992-11-03 1994-04-07 Kurt Reiner Witte Gmbh & Co Kg Handschneideschere
US5421090A (en) * 1994-02-08 1995-06-06 Ding Wei Enterprises, Inc. Structure of scissors
DE9411383U1 (de) * 1994-07-14 1994-09-15 Shung Wei Industrial Co., Ltd., Her-Mei, Chang-Hua Schere mit auswechselbaren Scherenblättern
US5996592A (en) * 1999-01-28 1999-12-07 Choy; Bruce W. Cutting tool having multiple scissors
US20020095796A1 (en) * 2001-01-19 2002-07-25 Whitehall Richard A. Scissors with flexible handle segment
JP2004267716A (ja) 2003-03-06 2004-09-30 Masayoshi Iwasaki はさみ
WO2006034254A2 (en) * 2004-09-20 2006-03-30 Acme United Corporation Decorative scissor handles and method for manufacturing decorative scissor handles
US7458160B2 (en) * 2005-11-07 2008-12-02 Helen Of Troy Limited Ergonomic handle for scissors and other tools
US7363712B1 (en) * 2006-03-14 2008-04-29 Tai-Wei Scissors Co., Ltd. Cutting tool having detachable grips
WO2007135712A1 (ja) 2006-05-19 2007-11-29 Adachi Industry Co., Ltd. 理美容鋏
ITBZ20060040A1 (it) * 2006-09-05 2008-03-06 Intercable Srl "forbice con tranciacavi"
US20100083509A1 (en) * 2007-09-12 2010-04-08 Grist Elizabeth A Folding scissors
CN104626217A (zh) * 2015-01-21 2015-05-20 东莞亲亲我实业有限公司 一种剪刀
KR20160068708A (ko) * 2016-05-23 2016-06-15 강다혜 손잡이가 가위집 역할을 하는 가위
FR3067958B1 (fr) * 2017-06-21 2019-08-23 Maped Branche de ciseaux, demi-coque et procede de fabrication

Also Published As

Publication number Publication date
AU2020294813A1 (en) 2022-01-27
US20220258364A1 (en) 2022-08-18
JP2022537287A (ja) 2022-08-25
AU2020294813B2 (en) 2025-09-04
CN113950397A (zh) 2022-01-18
DE102019116772A1 (de) 2020-12-24
EP3986680C0 (de) 2024-10-09
ES2990253T3 (es) 2024-11-29
WO2020254038A1 (de) 2020-12-24
JP7611176B2 (ja) 2025-01-09
PL3986680T3 (pl) 2025-02-24
BR112021024967A2 (pt) 2022-01-25
EP3986680A1 (de) 2022-04-27

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