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
  • B26B5/007—Hand knives with one or more detachable blades for cutting slices one by one
• • 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
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/828—With illuminating or viewing means for work

Definitions

• the present invention relates to a device for performing cutting. It relates in particular but not exclusively, a device that can be used safely by children and that can cut paper or cardboard.
• the invention therefore more particularly aims to eliminate these disadvantages by providing a device that allows cutting material such as paper or cardboard, comprising a body having ergonomics adapted to children, and at least one blade arranged so as not to constitute a danger of injury to users.
• a device that makes it possible to cut material such as paper or cardboard, comprising a body that comprises gripping means, and means for fixing at least one optionally retractable blade, one end of which protrudes in relation to a specific area of the body surface, in use of the device position, characterized in that the height of the blade protruding from said zone is between 10 microns and 10 4 microns, preferably 2 microns and 10 in that said zone has a relatively large surface, of the order of 0.5 to 15 cm 2 .
• the height of the projecting portion of the blade is just sufficient to perform for example the cutting of a sheet of standard thickness, or 0.1 millimeters.
• this blade is not likely to cut on the skin of a user, for example a child. Indeed, given the importance of the bearing surface surrounding the blade, the pressure exerted on the skin will not be important and can not generate a punching effect. As a result, at the level of the blade, the skin retains its flexibility and disappears on contact with the blade (especially as the height of the blade is low). The cutting edge of the blade will slide on the outer layer, relatively hard epidemic, pushing it gradually. The effect obtained (the absence of cuts) is relatively surprising.
• the upper part of the body of the device according to the invention may have a conformal shape with that of the palm of the hand of a child so that the latter can hold said device according to the invention with ease and firmness.
• the upper part of the body of the device according to the invention is curved while its lower part comprises at least three points of support which allow to ensure a high stability to said body.
• the body of the device according to the invention may be partially or totally transparent in order to be able to perfectly visualize the zone of contact between the blade and the element to be cut.
• the device according to the invention may also comprise a protective and guiding piece disposed under the element to be cut, the latter being thus placed between said body of the device according to the invention and this piece of protection and guidance.
• Said body as well as the protective and guiding part may each comprise an element that can be subject to magnetic attraction, arranged so as to be in facing relation when the device according to the invention is in the position of use, so as to ensure an attraction of these two elements.
• the blade may protrude from the specified area of the above-mentioned safety equipment to 1100 44 millimeters, the protective and guiding part to prevent injury.
• the body of the device according to the invention may comprise a LED type of lighting means arranged to illuminate the contact zone between said blade and the element to be cut. - AT -
• the body of the device according to the invention may also comprise a magnifying glass arranged so as to be in the visual field of the user, the latter thus being able to see magnetically said contact zone.
• the front part of the body of the device can be tapered to allow the user to have an optimal view of the contact area between said blade and the element to be cut.
• Figure 1 is a schematic view of three quarters face of the device according to the invention.
• Figure 2 is a partial schematic view of one side of the device according to the invention.
• Figure 3 is a schematic view in a vertical section of the front part of the body of the device according to the invention.
• Figures 4a and 4b are schematic views in a vertical section of the front part of the body of the device according to an alternative embodiment of the invention.
• Figures 5a and 5b are schematic views in a vertical section of the front part of the body of the device according to another embodiment of the invention.
• Figure 6 is a schematic representation of a support member of a device according to an alternative embodiment of the invention.
• FIG. 7 is a diagrammatic representation seen from above of the support element represented in FIG. 6.
• Figure 8 is a schematic top view of the body and said support member according to an alternative embodiment of the invention.
• Figure 9 is a schematic front view of the device according to an alternative embodiment of the invention.
• Figure 10a is a schematic side view of the device according to an alternative embodiment of the invention, in the cutting position.
• Figure 10b is a schematic front view of the device shown in Figure 10a, in the rest position.
• Figure 10c is a schematic view from the side and partially in section of the device shown in Figure 10a in disassembled position.
• the device according to the invention 1 comprises a body 2 which comprises:
• An anterior portion 3 having at least one ground support point
• the anterior part 3 of the body 2 of the device according to the invention 1 comprises at least one cavity 5 whose orifice is included on the lower face of said anterior part 3.
• the cavity 5 of the anterior portion 3 of the body 2 of the device according to the invention 1 comprises a blade 6 disposed along a substantially vertical axis so as to be positioned in a plane substantially perpendicular to that of the element to be cut 7, this blade 6 can be retractable.
• said cavity 5 can also open on the upper face of said front portion 3, this cavity 5 flaring outwardly in its upper part. .
• the cavity 5 then comprises:
• a pusher 8 which comprises: a rod 9 surmounting said blade 6, or fixed to the upper part of this blade 6; o a preferably rounded head 10 opening at the upper face of said front portion 3;
• At least one resilient means such as a spring 11 disposed in the space between the base of the head of the pusher 8 and the base of the flared portion of the cavity 5.
• the lower end of said blade 6 protrudes from said body 2 by a distance of a few microns, preferably 10 microns 2, which prevents that the user shuts off.
• the pusher 8 can be arranged so that its head 10 opens out at the lower face of said body 2.
• the rod 9 in this case is in contact with the upper part of the blade 6, provided in another orifice also opening at the lower face of said body 2, by means of an intermediate piece which can be an articulated lever (not shown).
• the body 2 of the device according to the invention 1 may also comprise a light means (not shown) such as an LED which can be included on the lower face of the front part 3 of said body 2 or in a cavity opening into that 5 in which said blade 6, this light means being oriented so as to illuminate the contact zone between the blade 6 and the element to be cut 7.
• a light means such as an LED which can be included on the lower face of the front part 3 of said body 2 or in a cavity opening into that 5 in which said blade 6, this light means being oriented so as to illuminate the contact zone between the blade 6 and the element to be cut 7.
• the curved shape of the flanks of the flanges 4, 4 'of the body 2 confers on the assembly an ergonomics facilitating the handling of the device according to the invention 1.
• the space between the flanges 4, 4 'of said body 2 allows the user to better visualize and therefore better control the cutting operation.
• the device according to the invention 1 can also comprise a protective and guiding part 13, preferably rigid, disposed under the element to be cut 7, the latter being thus placed between said body 2 of the device according to the invention 1 and this protective and guiding part 13.
• the protective part and guide 13 may comprise, by way of example, a magnet 12 arranged to be opposite a metal element 30 or a magnet of opposite polarity included in the front portion 3 of said body 2 .
• This protective and guiding part 13 makes it possible in particular to provide guidance and control of the cutting operation, the element to be cut 7 being held between said body 2 and the protective and guiding part 13.
• said body 2 may comprise a magnet 14, movable in vertical translation, connected to said blade 6 or the rod 9 and the protective and guiding part 13 can be made at least partially of metallic material in this way, when this protective and guiding part 13 is disposed under the front part 3 of said body 2 , a magnetic attraction between the magnet 14 and this piece 13 is created and results in a deployment of the lower end of the blade 6 out of said body 2, this solution having the advantage of making impossible any direct contact between the blade 6 and the user.
• the front portion 3 of the body 2 of the device according to the invention 1 may comprise a tubular cavity 5 ' flaring at its base and opening on the underside of said anterior portion 3.
• This cavity 5 may comprise a substantially tubular blade support 15 fixed to the top of said cavity 5 by means of an elastic member 16 such that a cylindrical traction spring, this blade support 15 comprising an embedded blade 6 whose lower end opens at the base of the blade support 15.
• the front portion 3 of the body 2 of the device according to the invention 1 also comprises a part 17 having substantially the shape of a dome whose lower periphery is made of a metal material. This dome-shaped piece 17 is hingedly connected to the blade support 15 substantially at its vertical axis.
• the protective and guiding part 13 has substantially the shape of a ring having a diameter substantially equal to that of the base of the dome-shaped piece 17.
• This protective and guiding part 13 is at less partially partially magnetized in this way, when this protective and guiding part 13 is disposed under the front part of said body 2, a magnetic attraction between the dome-shaped part 17 and the protective and guiding part 13 is created, this which results in a lowering of the blade support 15 and therefore by a deployment of the lower end of the blade 6 out of said body 2.
• the hinged attachment of the dome-shaped part 17 to the blade support 15 makes it possible to cause the blade 6 to deploy from said body 2 only in the case where, when the protective and guiding part 13 is disposed under the anterior part of said body 2, the vertical axis of this protective and guiding part 13 coincides with that of the dome-shaped part 17.
• the device according to the invention 1 comprises:
• a support element 18 which has substantially the shape of a ring and comprising: an arm 19 which extends radially in the plane delimited by this support element 18, this arm 19 having, in a horizontal section, substantially the form of an "n" whose end of each of the two tabs is connected to the inner edge of the support member 18; in this example, each of said legs of the arm 19 comprises a through orifice oriented substantially horizontally, these two orifices being arranged vis-à-vis one another; a piece 20 extending radially and which partially covers said arm 19, this part 20 having, in a horizontal section, substantially the shape of an "n", each side of which is respectively fixed to a tab of said arm 19; each of said flanks comprises a through orifice oriented substantially horizontally, these two orifices being arranged vis-à-vis one another; this piece 20 is arranged so that its orifices are located on the same horizontal axis as those of said arm 19; o a connecting element 21 of substantially cylindrical shape, and which makes it possible to connect
• a protective and guiding part 13 whose vertical section has a flared shape from its top to its base, and which comprises a vertically oriented through central orifice, this protective and guiding part 13 possibly comprising at least one magnetic element (not shown) arranged to be opposite a respective magnetic element 23 of the support element 18.
• the protective and guiding part 13 may be disposed under this element to be cut 7, the body 2 and this protective and guiding part 13 being connected by magnetic attraction.
• the entire support element 18 - body 2 is shaped so as to be able to be oscillated about its vertical axis when the protective and guiding part 13 is put in place, this characteristic making it possible to give the whole a great maneuverability.
• the device according to the invention 1 can be shaped so that its vertical axis is substantially perpendicular to the plane of the palm of the hand of the user when the latter uses it.
• the cutting device 1 comprises a hollow ovoid body 2 extended at one of its ends by two substantially curved, substantially C-shaped flanges 50, and coming into contact with each other. back to the other end of said body 2.
• These two wings 50 extend symmetrically with respect to the main median plane of the body 2, following a path that deviates from said plane, the free ends of these wings 50 forming rounded shape located at the height of the free end of said body 2.
• a tool head 52 provided with a blade may consist of a blade of the type described above;
• an elastic fork 54 which extends the section and which has two parallel branches 55, 55 'each having at its end a radial protuberance 56, 56' of triangular section for providing axial locking by snapping.
• the distance between the head 52 and the protuberances 56, 56 ' is substantially equal to the length of the bore.
• a feature of the device described above is that in use position the ends of the body 2 and wings 50 are held in abutment on the sheet that is to be cut, like a tripod. However, the device is not stable in this position. Indeed, the distribution of the masses is provided for the device to turn in the manner of a culbuto, the wings 50 then playing the role of curved flip-flops.
• This feature makes it possible to avoid, on the one hand, that the support on which the device is placed can not be scratched unintentionally and, on the other hand, that the blade is subjected to shocks, in particular during the fall of the device.
• the tool holder 51 can be mounted so as to be able to be rotated relative to said body 2, which notably improves the comfort and precision of the cutting operations.

Landscapes

• Life Sciences & Earth Sciences (AREA)
• Forests & Forestry (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Knives (AREA)
• Details Of Cutting Devices (AREA)
• Control And Other Processes For Unpacking Of Materials (AREA)

Applications Claiming Priority (2)

Publications (2)

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ID=38692062

Family Applications (1)

Country Status (5)

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Family Cites Families (6)

• 2007
  • 2007-05-31 FR FR0703896A patent/FR2916670B1/fr not_active Expired - Fee Related
• 2008
  • 2008-05-15 US US12/602,115 patent/US20100175268A1/en not_active Abandoned
  • 2008-05-15 WO PCT/FR2008/000694 patent/WO2009004138A2/fr not_active Ceased
  • 2008-05-15 AT AT08805588T patent/ATE552077T1/de active
  • 2008-05-15 EP EP20080805588 patent/EP2155446B1/de not_active Not-in-force

Non-Patent Citations (1)

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