EP0324379A1 - Structure for mounting blades in scissors - Google Patents

Structure for mounting blades in scissors Download PDF

Info

Publication number
EP0324379A1
EP0324379A1 EP89100163A EP89100163A EP0324379A1 EP 0324379 A1 EP0324379 A1 EP 0324379A1 EP 89100163 A EP89100163 A EP 89100163A EP 89100163 A EP89100163 A EP 89100163A EP 0324379 A1 EP0324379 A1 EP 0324379A1
Authority
EP
European Patent Office
Prior art keywords
blade
blades
supporting
portions
plane
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.)
Withdrawn
Application number
EP89100163A
Other languages
German (de)
English (en)
French (fr)
Inventor
Makoto Sugiyama
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.)
Kaijirushi Hamono Center KK
Original Assignee
Kaijirushi Hamono Center KK
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 Kaijirushi Hamono Center KK filed Critical Kaijirushi Hamono Center KK
Publication of EP0324379A1 publication Critical patent/EP0324379A1/en
Withdrawn legal-status Critical Current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
    • B26B13/00—Hand shears; Scissors
    • B26B13/02—Hand shears; Scissors with moulded-in blades

Definitions

  • the present invention relates to a structure for mounting blades in scissors or shears which have a pair of scissor or shear segments supported by a pivot in the form of X, or bow scissors which have a pair of scissor segments supported by a pivot at its base end portion in the form of V.
  • Fig. 4 shows one of examples of structures for mounting blades in scissors.
  • notches 5 are formed on the insides of the opposite inner surfaces of a pair of blade portions 3.
  • Blades 6 are fitted in the notches 5 and fixed by screws 10.
  • Sliding surfaces 7 are formed adjacent to the notohes 5 on the outsides of the opposite inner surfaces of the blade portions 3.
  • the inner surfaces of the blades 6 and the sliding surfaces 7 are level to each other.
  • the blades 6 are attached to the notches 5 by the screws 10, so that it is difficult in view of strength to form blade mounting portions 3a of the blade portions 3 out of synthetic resin. Furthermore, the scissors can not be opened and closed without trouble if heads of the screws 10 are projected from the blades 6 which also form parts of sliding surfaces. Therefore, the screws 10 need to be buried in the blades 6. However, it is troublesome to form concave portions accurately in the blades 6 for burying the heads of the screws 10. Furthermore, in view of forming the concave portions, the thickness of the blades 6 can not be too thin.
  • the present invention provides a structure for mounting a blade with a blade edge to a first side of a blade mounting portion having a sliding surface on a second side, said first side being continuous with said second side, comprising a notch formed in said second side of said blade mounting portion, and having a surface inclined toward said sliding surface, said blade being set on said inclined surface, said blade edge being on a plane including said sliding surface, said plane and said blade defining a space therebetween; and supporting means for supporting said blade, provided on said inclined surface and situated within said space.
  • a pair of scissor segments 11 respectively comprises a handle 12 and a blade portion 13, and is supported by a pivot 14 in the form of X.
  • Notches 15 are formed on the insides of the opposite inner surfaces of blade mounting portions 13a of both the blade portions 13. Blades 16 are mounted on the notches 15.
  • a structure for mounting the blades 16 will be described in detail.
  • a sliding surface 17 is formed, adjacent to the notch 15, on the outside of the opposite inner surface of the blade mounting portion 13a of each blade portion 13.
  • An inner bottom surface 15a of each notch 15 forms a supporting surface for the blade 16. and is inclined toward a plane 101 including the sliding surface 17.
  • a plurality of supporting projections 18, three in this embodiment, are formed on the inner bottom surface 15a of the notch 15 as means for supporting the blade 16.
  • Each supporting projection 18 includes a stem portion of smaller diameter inserted into a support hole 19 of the blade 16, and a head portion 18a of larger diameter mounted on the tip of the stem portion 18b and engaging the circumference of the support hole 19 on the surface of the blade 16 away from the inner bottom surface 15a.
  • the blade 16 is fitted into the notch 15 so as to be put on the inner bottom surface 15a. Then each supporting projection 18 is inserted into each of the support holes 19 formed in the blade 16, and the head portion 18a is engaged with the blade 16 so that the blade 16 is supported in the notch 15.
  • the support projections 18 are integrally formed on the blade mounting portions 13a in the present embodiment. However, so long as the strength of the blade mounting portion 13a is assured, the supporting projections 18 may be formed separately and attached to the inner bottom surface 15a of the notch 16. Moreover, though the blade mounting portions 13a and supporting projections 18 are formed out of synthetic resin in this embodiment, they can be also formed out of other kinds of materials.
  • a blade edge 16a of he blade 16 is on a plane including an inner edge 13b of the blade mounting portion 13a, and at the same time, on the plane 101 including the sliding surfaces 17.
  • each of the blade edges 16a of the blades 16 is on the intersection line of the plane including the inner edge 13b of the blade mounting portion 13a and the plane 101 including the sliding surfaces 17.
  • a space 102 is formed between the plane 101, which connects the sliding surfaces 17 with the blade edges 16a of the blades 16, and the blades 16. ln the space 102, the head portions 18a of the support projections 18 are engaged with the blades 16.
  • both the scissor segments 11 described above are opened or closed, as the sliding surfaces 17 of both the blade portions 13 are being slided on each other, an object is cut by the blade edges 16a of both the blades 16.
  • the space 102 is formed between the blades 16 and the plane 101 including the sliding surfaces 17, and since the head portions 18a of the supporting projections 18 supporting the blades 16 are within the same space 102, the head portions 18a of the supporting projections 18 of one scissor segment 11 do not hit and interfere with the sliding surface 17 of the other scissor segment 11.
  • the open/close movement of both the scissor segments 11 is not interfered.
  • the blades 6 are attached to the notches 15 using no screws but the supporting projections 18. Namely, concave portions reducing the strength of the blade mounting portions 13a are omitted from the same blade mounting portions 13a. Therefore, there arises no problem in strength if the blade mounting portions 13a of the blades 13 are formed out of synthetic resin, and the forming of the blade mounting portions 13a out of synthetic resin is realized.
  • the blades 16 themselves are processed, such that the opposite inner surfaces of the blades 16 are inclined toward the plane 101 including the sliding surfaces 17.
  • the inner bottom surfaces 15a of the notches 15 are inclined toward the plane 101 including the sliding surfaces 17 and the blades 16 are set on the same inner bottom surfaces 15a so that the blades 16 are automatically inclined toward the plane 101 and the space l02 is made. Therefore, there is no necessity of special processing of the blades 16 for making the space 102.
  • the structure for mounting the blades 16 according to the present embodiment can naturally be applied to shears or bow scissors.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Scissors And Nippers (AREA)
EP89100163A 1988-01-09 1989-01-05 Structure for mounting blades in scissors Withdrawn EP0324379A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP146788U JPH01108272U (US08063081-20111122-C00044.png) 1988-01-09 1988-01-09
JP1467/88 1988-01-09

Publications (1)

Publication Number Publication Date
EP0324379A1 true EP0324379A1 (en) 1989-07-19

Family

ID=11502267

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89100163A Withdrawn EP0324379A1 (en) 1988-01-09 1989-01-05 Structure for mounting blades in scissors

Country Status (2)

Country Link
EP (1) EP0324379A1 (US08063081-20111122-C00044.png)
JP (1) JPH01108272U (US08063081-20111122-C00044.png)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1956588A (en) * 1932-03-04 1934-05-01 Bard Parker Company Inc Scissors
GB627080A (en) * 1947-08-06 1949-07-27 Paul Richartz Improvements in or relating to scissors
GB999624A (en) * 1963-06-27 1965-07-28 Glenullen George Victor Thomps Improvements in and relating to scissors or the like
GB1597745A (en) * 1977-09-27 1981-09-09 Marin S Scissors or shears

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1956588A (en) * 1932-03-04 1934-05-01 Bard Parker Company Inc Scissors
GB627080A (en) * 1947-08-06 1949-07-27 Paul Richartz Improvements in or relating to scissors
GB999624A (en) * 1963-06-27 1965-07-28 Glenullen George Victor Thomps Improvements in and relating to scissors or the like
GB1597745A (en) * 1977-09-27 1981-09-09 Marin S Scissors or shears

Also Published As

Publication number Publication date
JPH01108272U (US08063081-20111122-C00044.png) 1989-07-21

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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