EP3427911B1 - Outil de coupe circulaire - Google Patents

Outil de coupe circulaire Download PDF

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Publication number
EP3427911B1
EP3427911B1 EP18174285.9A EP18174285A EP3427911B1 EP 3427911 B1 EP3427911 B1 EP 3427911B1 EP 18174285 A EP18174285 A EP 18174285A EP 3427911 B1 EP3427911 B1 EP 3427911B1
Authority
EP
European Patent Office
Prior art keywords
extension
fixing head
orifice
circular cutter
assembly
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
EP18174285.9A
Other languages
German (de)
English (en)
Other versions
EP3427911A1 (fr
Inventor
Pi-Chao Chang
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.)
Donwei Machinery Ind Co Ltd
Original Assignee
Donwei Machinery Ind Co Ltd
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 Donwei Machinery Ind Co Ltd filed Critical Donwei Machinery Ind Co Ltd
Publication of EP3427911A1 publication Critical patent/EP3427911A1/fr
Application granted granted Critical
Publication of EP3427911B1 publication Critical patent/EP3427911B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B25/00—Hand cutting tools involving disc blades, e.g. motor-driven
    • B26B25/005—Manually operated, e.g. pizza cutters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B29/00—Guards or sheaths or guides for hand cutting tools; Arrangements for guiding hand cutting tools
    • B26B29/02—Guards or sheaths for knives

Definitions

  • the present invention relates to a circular cutter in which the connection assembly drives the cutting blade to push the rotatable disc away by way of the flexible deformation section and the elongated section of the protection assembly, hence the cutting blade cuts the object at any angles.
  • a conventional circular cutter contains a cutting blade configured to cut an object after pushing the cutting blade, and the cutting blade is retracted after cutting the object.
  • this conventional circular cutter is complicated and cuts the object troublesomely.
  • Another conventional circular cutter contains a protection assembly fixed aside a cutting blade and abutting against a spring, when the protection assembly is not forced by an external force, it is located on one side of the cutting blade so as to avoid cutting the user.
  • the protection assembly is forced by the external force, the spring deforms so that the protection assembly moves and the cutting blade exposes to cut the object.
  • this conventional circular cutter has high production cost.
  • the protection assembly and the spring are two independent components respectively, so they are damaged easily.
  • Circular cutters according to the state of the art are known for example from US 2007/0022615 A1 , EP 1525959 A2 , or US 5299355A .
  • the present invention has arisen to mitigate and/or obviate the afore-described disadvantages.
  • the primary objective of the present invention is to provide a circular cutter in which the connection assembly drives the cutting blade to push the rotatable disc away by way of the flexible deformation section and the elongated section of the protection assembly, hence the cutting blade cuts the object at any angles.
  • a circular cutter provided by the present invention contains: a connection assembly including a first extension and a first fixing head connecting with one end of the first extension, and the first fixing head having a locking hole defined on the first fixing head.
  • the first extension has a cavity formed on one side of the first extension, a first groove defined on a first end of the cavity, and a second groove defined on a second end of the cavity.
  • the cavity accommodates a protection assembly
  • the protection assembly includes a second extension and a second fixing head connecting with one end of the second extension, wherein the second extension has a projection and a flexible deformation section connecting with the projection, the flexible deformation section deforms, and the projection retains in the second groove of the connection assembly.
  • an elongated section is defined between the flexible deformation section and the second fixing head and is fixed in the first groove
  • the second fixing head has a first orifice corresponding to the locking hole of the connection assembly, hence a fixing assembly is rotatably connected with a cutting blade and is fixed in the locking hole of the connection assembly.
  • a circular cutter 100 comprises: a connection assembly 10, a protection assembly 20, a handle grip 30, a cutting blade 40, a fixing assembly 50, and a safety button 60.
  • connection assembly 10 includes a first extension 11 and a first fixing head 12 connecting with one end of the first extension 11, wherein the first fixing head 12 has a locking hole 121 defined thereon.
  • the first extension 11 has a cavity 111 formed on one side thereof, a first groove 114 defined on a first end of the cavity 111, two flexible actuation stems 113 symmetrically arranged beside two sides of the first groove 114 separately, and a second groove 112 defined on a second end of the cavity 111.
  • the protection assembly 20 is accommodated in the cavity 111 and includes a second extension 21 and a second fixing head 22 connecting with one end of the second extension 21, wherein the second extension 21 has an elongated section 211 coupling with the second fixing head 22, a projection 212, and a flexible deformation section 213 defined between the elongated section 211 and the projection 212, wherein the elongated section 211 is fixed in the first groove 114 and is flexible so as to incline after being pushed by an external force.
  • the flexible deformation section 213 is accommodated in the cavity 111 and is comprised of two arcuate parts, such that the flexible deformation section 213 deforms after being pushed by the external force.
  • the projection 212 is retained in the second groove 112 of the first extension 11, and the second fixing head 22 has a first orifice 221, a second orifice 222, a contacting rib 223 extending outwardly from a peripheral side of the first orifice 221 and rotatably connecting with a guiding aperture 231 of a rotatable disc 23, wherein an outer diameter of the rotatable disc 23 is more than that of the first fixing head 12, and a diameter of the first orifice 221 is more than that of the locking hole 121.
  • the handle grip 30 includes an accommodation hole 31 defined therein so as to house the first extension 11 of the connection assembly 10 and the second extension 21 of the protection assembly 20, and the handle grip 30 is gripped by a user.
  • the cutting blade 40 is circular and includes a positioning hole 41 corresponding to the guiding aperture 231 of a rotatable disc 23, wherein the cutting blade 40 abuts against the rotatable disc 23, and an outer diameter of the cutting blade 40 is less than that of the rotatable disc 23.
  • the fixing assembly 50 includes a washer 51, a screw bolt 52, and a nut 53, wherein the washer 51 has a through hole 511 and a recess 512 adjacent to the through hole 511, the screw bolt 52 has a stem 521 and a circular tab 522 coupling with the stem 521, hence the stem 521 screws with the nut 53 via the through hole 511 of the washer 51, the positioning hole 41 of the cutting blade 40, the first orifice 221 of the protection assembly 20, and the locking hole 121 of the connection assembly 10.
  • the washer 51 contacts with the cutting blade 40, the nut 53 is mounted on the first fixing head 12, and the circular tab 522 has a protrusion 523 extending outwardly therefrom and retained in the recess 512 of the washer 51.
  • the safety button 60 includes a rotatable coupling portion 61 and a knob 62
  • the first fixing head 12 of the connection assembly 10 has a connecting portion 13 in which a column 14 and a notch 15 are arranged, wherein the column 14 is rotatably connected with the rotatable coupling portion 61 of the safety button 60, the notch 15 accommodates the knob 62, and the knob 62 of the safety button 60 is urged by the external force to movably engage with or remove from the second orifice 222.
  • the knob 62 of the safety button 60 When the knob 62 of the safety button 60 is movably removed from the second orifice 222, the rotatable disc 23 of the protection assembly 20 is forced by the external force to move, and the cutting blade 40 exposes outside the rotatable disc 23.
  • the knob 62 of the safety button 60 When the knob 62 of the safety button 60 is movably engaged with the second orifice 222, the protection assembly 20 is not driven by the external force so that the rotatable disc 23 abuts against the cutting blade 40.
  • the safety button 60 is moved toward a locking position so that the knob 62 of the safety button 60 is movably engaged with the second orifice 222 of the second fixing head 22 (as shown in FIG. 5 ), and the protection assembly 20 is not forced by the external force to deform, so that the rotatable disc 23 abuts against the cutting blade 40.
  • the outer diameter of the rotatable disc 23 is more than that of the cutting blade 40, so the rotatable disc 23 abuts against the cutting blade 40 so as to avoid the cutting blade 40 cutting the user.
  • the rotatable disc 23 smoothly rotates on an object.
  • the safety button 60 When the circular cutter 100 is used, the safety button 60 is moved toward an unlocking position so that the knob 62 of the safety button 60 is movably removed from the second orifice 222 of the second fixing head 22 (as shown in FIG. 4 ), such that the protection assembly 20 is not limited by the safety button 60 and is forced by the external force to deform the flexible deformation section 213, and the rotatable disc 23 is pushed away so that the cutting blade 40 exposes outside the rotatable disc 23 (as illustrated in FIG. 6 ) to cut the object.
  • connection assembly 10 drives the cutting blade 40 to push the rotatable disc 23 away by way of the flexible deformation section 213 and the elongated section 211 of the protection assembly 20, hence the cutting blade 40 cuts the object (as shown in FIGS. 6-8 ) at any angles.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Knives (AREA)

Claims (8)

  1. Outil de coupe circulaire (100) comprenant :
    un ensemble de connexion (10) comprenant une première extension (11) et une première tête de fixation (12) se connectant à une extrémité de la première extension (11), et la première tête de fixation (12) ayant un trou de verrouillage (121) défini sur la première tête de fixation (12) ;
    la première extension (11) ayant une cavité (111) formée d'un côté de la première extension (11), une première rainure (114) définie sur une première extrémité de la cavité (111), et une seconde rainure (112) définie sur une seconde extrémité de la cavité (111) ;
    dans lequel la cavité (111) reçoit un ensemble de protection (20), et l'ensemble de protection (20) comprend une seconde extension (21) et une seconde tête de fixation (22) se connectant à une extrémité de la seconde extension (21), dans lequel la seconde extension (21) présente une projection (212) et une section de déformation flexible (213) se connectant à la projection (212), la section de déformation flexible (213) se déforme, et la projection (212) est retenue dans la seconde rainure (112) de l'ensemble de connexion (10) ;
    une section allongée (211) est définie entre la section de déformation flexible (213) et la seconde tête de fixation (22) et est fixée dans la première rainure (114), la seconde tête de fixation (22) présente un premier orifice (221) correspondant au trou de verrouillage (121) de l'ensemble de connexion (10), un ensemble de fixation (50) est ainsi connecté en rotation à une lame de coupe (40) et est fixé dans le trou de verrouillage (121) de l'ensemble de connexion (10).
  2. Outil de coupe circulaire (100) selon la revendication 1, dans lequel une poignée de préhension (30) reçoit la première extension (11) de l'ensemble de connexion (10) et la seconde extension (21) de l'ensemble de protection (20), et la poignée de préhension (30) comprend un trou de réception (31) conçu pour recevoir la première extension (11) de l'ensemble de connexion (10) et la seconde extension (21) de l'ensemble de protection (20).
  3. Outil de coupe circulaire (100) selon la revendication 1, dans lequel la section de déformation flexible (213) est constituée par deux parties incurvées qui sont flexibles et sont forcées à se déformer.
  4. Outil de coupe circulaire (100) selon la revendication 1, dans lequel un diamètre du premier orifice (221) est supérieur à celui du trou de verrouillage (121).
  5. Outil de coupe circulaire (100) selon la revendication 1, dans lequel la lame de coupe (40) comprend un trou de positionnement (41), et l'ensemble de fixation (50) comprend une rondelle (51), une tige (52), et un écrou (53), dans lequel la rondelle (51) présente un trou traversant (511) et un évidement (512) adjacent au trou traversant (511), la tige (52) présente une tige filetée (521) et une tête circulaire (522) se couplant à la tige filetée (521), la tige filetée (521) se vissant ainsi sur l'écrou (53) à travers le trou traversant (511), le trou de positionnement (41), le premier orifice (221), et le trou de verrouillage (121) ; la tête circulaire (522) présente une saillie (523) s'étendant vers l'extérieur depuis celle-ci et retenue dans l'évidement (512) de la rondelle (51).
  6. Outil de coupe circulaire (100) selon la revendication 1 comprenant en outre un bouton de sécurité (60) comprenant une partie de couplage pivotante (61) et une molette (62), et la première tête de fixation (12) de l'ensemble de connexion (10) ayant une partie de connexion (13) dans laquelle une colonne (14) et une encoche (15) sont agencées, dans lequel la colonne (14) est connectée en rotation à la partie de couplage pivotante (61) du bouton de sécurité (60), l'encoche (15) reçoit la molette (62), et la seconde tête de fixation (22) présente un second orifice (222) ; la molette (62) du bouton de sécurité (60) est poussée par une force externe pour venir en prise de manière mobile avec le, ou se retirer du, second orifice (222) ; lorsque la molette (62) du bouton de sécurité (60) est retirée du second orifice (222), l'ensemble de protection (20) peut être forcé par une force externe pour se déplacer, et la lame de coupe (40) peut être exposée hors de la seconde tête de fixation (22) ; lorsque la molette (62) du bouton de sécurité (60) est en prise avec le second orifice (222), l'ensemble de protection (20) n'est pas déplaçable par des forces externes de manière à venir en butée contre la lame de coupe (40).
  7. Outil de coupe circulaire (100) selon la revendication 1, dans lequel la première extension (11) présente en outre deux tiges d'actionnement flexibles (113) agencées symétriquement des deux côtés de la première rainure (114) séparément.
  8. Outil de coupe circulaire (100) selon la revendication 1, dans lequel la seconde tête de fixation (22) présente une nervure de contact (223) s'étendant vers l'extérieur depuis un côté périphérique du premier orifice (221) et se connectant en rotation à une ouverture de guidage (231) d'un disque rotatif (23), dans lequel un diamètre externe du disque rotatif (23) est supérieur à celui de la première tête de fixation (12).
EP18174285.9A 2017-07-14 2018-05-25 Outil de coupe circulaire Active EP3427911B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW106210449U TWM551115U (zh) 2017-07-14 2017-07-14 圓刀結構改良

Publications (2)

Publication Number Publication Date
EP3427911A1 EP3427911A1 (fr) 2019-01-16
EP3427911B1 true EP3427911B1 (fr) 2021-04-07

Family

ID=61014236

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18174285.9A Active EP3427911B1 (fr) 2017-07-14 2018-05-25 Outil de coupe circulaire

Country Status (2)

Country Link
EP (1) EP3427911B1 (fr)
TW (1) TWM551115U (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6112489U (ja) * 1984-06-26 1986-01-24 株式会社貝印刃物開発センター 円形刃回転式カツタ−における円形刃の回転抵抗調節構造
US5144749A (en) * 1992-03-30 1992-09-08 Chen Chien Tang Utility knife
US5299355A (en) * 1992-11-16 1994-04-05 Fiskars Oy Ab Rotary blade actuator for a hand held cutter
JP4272032B2 (ja) * 2003-10-22 2009-06-03 クロバー株式会社 円板状刃を備えた手工具
US7434319B2 (en) * 2005-08-01 2008-10-14 Chen Lin Tsai-Lian Circular cutter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3427911A1 (fr) 2019-01-16
TWM551115U (zh) 2017-11-01

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