EP3669691A1 - Schieber für reissverschluss - Google Patents

Schieber für reissverschluss Download PDF

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Publication number
EP3669691A1
EP3669691A1 EP18215125.8A EP18215125A EP3669691A1 EP 3669691 A1 EP3669691 A1 EP 3669691A1 EP 18215125 A EP18215125 A EP 18215125A EP 3669691 A1 EP3669691 A1 EP 3669691A1
Authority
EP
European Patent Office
Prior art keywords
slider
ring
bridge
resilient element
insert
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Withdrawn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
EP18215125.8A
Other languages
English (en)
French (fr)
Inventor
Alberto MONETA
Ilenia DRAGONETTI
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.)
Riri SA
Original Assignee
Riri SA
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 Riri SA filed Critical Riri SA
Priority to EP18215125.8A priority Critical patent/EP3669691A1/de
Publication of EP3669691A1 publication Critical patent/EP3669691A1/de
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00—Slide fasteners
    • A44B19/24—Details
    • A44B19/26—Sliders
    • A44B19/30—Sliders with means for locking in position
    • A44B19/306—Sliders with means for locking in position in the form of a locking spring member actuated by the pull member

Definitions

  • the invention relates to the field of slide fasteners (zip fasteners).
  • the invention relates to a slider for a slide fastener.
  • a slide fastener as is known, comprises two tapes provided with respective rows of teeth and a slider provided with a pull tab.
  • the slider in turn typically comprises an inner flange and an outer flange which define a space of meshing of the teeth.
  • the two flanges are connected by a core which is also termed "diamond” owing to its essentially rhomboidal shape.
  • the slider also comprises a bridge element which retains the pull tab.
  • the pull tab has a ring which is retained between the bridge and the outer flange of the slider.
  • the bridge is formed as one piece with the body comprising the flanges and the diamond.
  • Another type of slider comprises a resilient element (sometimes called “spring") associated with the bridge.
  • Said resilient element has the function of retaining the pull tab.
  • said resilient element also has the function of providing an automatic lock to prevent undesired sliding of the slider.
  • the resilient element is configured to engage the teeth of the zip fastener in such a way to prevent sliding of the fastener; when the user acts to open or close the zip fastener, the pull tab raises the resilient element and temporarily disengages the locking action.
  • the resilient element generally has an essentially U-shaped or C-shaped cross-section which comprises an upper face, directed upwards i.e. towards the outside of the slider, and two shaped sides, which extend from said upper face towards the flange of the slider itself.
  • the pull tab is mounted so that the ring of the pull tab is received in suitable grooves, for example V-shaped grooves, of the sides of the resilient element.
  • the resilient element is normally made of metal by means of a shearing process.
  • the shearing process is advantageous since it is quick and inexpensive and is well-suited for the mass-production of a large number of parts.
  • the ring of the pull tab rests just on the edges of the sides being therefore exposed to the risk of surface damage. Furthermore, the ring of the pull tab has a certain freedom of movement and may also be subject to rubbing against the upper surface of the outer flange, with the risk of damaging the finish of both the pull tab and the slider body.
  • the aim of the invention is to solve the aforementioned problem. More particularly, the invention has the purpose of an improved slider to avoid damage to the surface finish caused by contact and friction with the pull tab.
  • Said slider may be of the type with an anti-sliding locking system.
  • the ring is retained so as to prevent or limit substantially its possibility of movement with respect to the slider body and consequent friction against the same.
  • the ring is retained so that a possibility of movement of the ring with respect to the slider body, in said longitudinal direction, is limited to not more than 1.5 mm and preferably not more than 1 mm.
  • This value represents the longitudinal range of the ring between two stop positions.
  • Said stop positions may be defined for example by the bridge or by an insert thereof.
  • the ring of the pull tab is received and retained longitudinally inside a recess formed in the bridge or in an insert of the bridge.
  • Said recess is sized to constrain the ring in the longitudinal direction with respect to the slider body, the longitudinal direction being the direction of sliding of the said slider when it is mounted in a slide fastener.
  • Said recess is sized to receive the ring of the pull tab with a coupling having a small play, such that the pull tab is essentially retained in the longitudinal direction.
  • the bridge of the slider body comprises a resilient element which retains the pull tab.
  • said resilient element performs an automatic anti-sliding lock of the slider.
  • Said resilient element has a rest position wherein the lock is engaged and wherein a pulling of the pull tab causes said ring to lift the resilient element to release the lock and allow sliding of the slider.
  • the slider may comprise an insert which is arranged between said resilient element and said ring of the pull tab, so that the ring can lift the resilient element and release the lock (if present) by means of a contact with said insert, wherein the ring does not contact directly the resilient element.
  • the ring in this embodiment, is retained inside a recess of said insert.
  • the resilient element preferably is made of metal. More preferably said resilient element is produced by means of shearing.
  • the protective insert preferably is made of plastic material.
  • the primary function of the resilient element is retention of the pull tab.
  • said resilient element is configured to perform also said automatic lock.
  • the resilient element comprises, in correspondence of the bridge, a portion with a U-shaped cross-section comprising a flat face and two side walls which protrude from said flat face towards the outer flange.
  • the insert is advantageously situated inside said portion of resilient element with a U-shaped cross-section.
  • the insert is housed inside the space defined between the two side walls.
  • the insert may be co-molded together with the spring in some embodiments of the invention.
  • the automatic anti-sliding lock is obtained, for example, by one or more protrusions of the resilient element which, through openings in the outer flange, can engage the teeth of the slide fastener so as to prevent a movement of the slider.
  • the above described recess of the protective insert preferably has a longitudinal dimension which is slightly greater than the ring of the pull tab. In this way the recess accommodates the ring of the pull tab with a very small play and substantially keeps the ring from moving backward and forward both with respect to the resilient element and with respect to the body of the slider.
  • the ring is retained by a recess formed directly in the bridge.
  • the bridge comprises a shaped part which extends from the bridge towards the outer flange and which defines a recess inside which the ring is received.
  • said shaped part is represented by a tongue of material with a thickness smaller than the thickness of the bridge. Said thickness is understood in a direction transverse to the mentioned sliding direction.
  • Said shaped part may be formed integrally with the bridge or may include a part to be mounted on the bridge.
  • the invention has a dual advantage: the insert protects the ring of the pull tab from direct contact with the resilient element, in particular with the possibly sharp edges of the two sides. Moreover, the suitable configuration of the recess which accommodated the ring with a small amount of longitudinal play prevents a back and forth movement of the pull tab relative to the slider body and, consequently, prevents also the damaging friction between the ring and the surface of the flange. All this greatly reduces the risk that, during use, the pull tab and/or the slider body may damage each other owing to the friction between them.
  • the invention is advantageous also in the simplified embodiment without the automatic lock since it prevents in any case rubbing of the pull tab against the slider body and consequent damage thereto.
  • Figures 1 to 6 show a slider 1 for a slide fastener, comprising essentially a slider body 2 and a pull tab 3.
  • the slider body 2 comprises essentially: an inner flange 4, an outer flange 5, a bridge 6, a core or diamond 7.
  • the diamond 7 defines the front part of the slider 1.
  • the pull tab 3 comprises a body 8 and a ring 9 (better visible in Fig. 3 and Fig. 6 ).
  • the ring 9 extends between two sides 24 which define a window 25.
  • the flanges 4 and 5 of the slider body 2 are connected by the diamond 7 and define a channel 22 for receiving and meshing of the teeth of a slide fastener.
  • guide wings 10 for the teeth protrude from the edges of the flanges 3 and 4.
  • the bridge 6 comprises, in this embodiment, a resilient element 11, briefly named spring, which is made of metal, preferably by means of a shearing process.
  • the spring 11 in greater detail comprises a body with an essentially U-shaped cross-section which includes an upper face 12 and shaped sides 13.
  • the sides 13 each have a cut 14, which is for example a V-shaped cut, in the region of the ring 9.
  • the spring 11 has a tongue 15 for attachment to the front part 23 of the slider body 2, that is in the region of the diamond 7.
  • the spring 11 extends between said front part 23 and an opposite end 26 of the bridge 6.
  • the spring 11 has at least one small tooth 16 positioned to engage inside a window 17 ( Fig. 6 ) of the outer flange 5. Via said window 17, the tooth 16 is able to be inserted inside the channel 22 and engage with the teeth of the slide fastener so as to prevent sliding of the slider.
  • the tooth 16 thus performs a slider lock which is active when the spring 11 is in the rest position, i.e. when the pull tab 3 is not operated.
  • the slider comprises a protective insert 18, preferably made of plastic material, which is inserted inside the spring 11, more particularly inside a channel 19 bounded by the two sides 13 and by the face 12 of the spring.
  • the insert 18 may be made by means of direct co-molding onto the spring 11 (so that the insert 18 and the spring 11 form a single piece) or may be made as a separate piece inserted inside the spring 11 during production of the slider or of the spring itself.
  • Said insert 18 has a recess 20 which, being situated at the cuts 14, receives the ring 9 of the pull tab 3.
  • the ring 9 does not touch the edges 21 of the sides 13 which can be sharp and potentially damaging for the surface finish of the said ring 9.
  • the insert 18 thus acts as a protection for the ring 9 of the pull tab.
  • Said recess 21 has dimensions so as to retain the pull tab 3 longitudinally and substantially prevent a back and forth movement of the pull tab 3 with respect to the slider body 2.
  • the longitudinal direction is defined here as the direction L of forward movement of the slider which is indicated in Fig. 1 .
  • said recess 21 has dimensions such as to receive the ring 9 with a precise tolerance, and therefore with a small play, in the longitudinal direction.
  • the recess 21 and the ring may be regarded as a shaft and bore coupling.
  • the longitudinal dimension of the recess 21 preferably corresponds (with play) to the dimension (for example the diameter) of the ring 9.
  • the play in the longitudinal direction L i.e. the possibility of any movement of the ring 9 inside the recess 21, is not more than 1 mm.
  • the object is achieved of limiting or substantially fully preventing a longitudinal movement of the ring 9 of the pull tab with respect to the spring 11 as well as with respect to the slider body 2, which longitudinal movement is damaging for the finish of the parts.
  • the accommodation of the ring 9 inside the recess 20 is such that the ring is substantially unable to move back or forth in the longitudinal direction L, something which would cause friction against the upper face of the flange 5.
  • the recess 20 of the insert 18 is narrower in the longitudinal direction L than the cut 14 in the spring 11. In this way the insert 18 not only protects the ring 9 from contact with the edges 21, but also performs the function of a longitudinal constraint for the pull tab 3.
  • the ring protection and retaining functions are incorporated in the so realized insert 18.
  • Figs. 7-9 show another embodiment of the invention, which is applied to a slider simpler than the slider according to Figs. 1-6 , being not equipped with the aforementioned spring 11.
  • FIG. 7-9 use the same reference numbers as Figs. 1-6 .
  • the ring 9 is retained by a recess 31 formed directly in the body of the bridge 6. As in the embodiment described above, the ring 9 is received inside the recess 31 with a small amount of play, so that the ring 9 is substantially retained and prevented from moving in the longitudinal direction L.
  • the bridge 6 comprises a shaped part 30 which extends from the inside of the bridge 6 towards the underlying flange 5 and which is shaped so as to define the recess 31.
  • said shaped part 30 has a tongue-like form.
  • the shaped part 30 is formed integrally in the bridge 6.
  • the shaped part 30 may be applied to the bridge 6.
  • the bridge 6 has an inner surface 32 facing and spaced in relation to said outer flange 5.
  • Said shaped part 30, which defines the recess 31 for the ring 9, extends from said surface 32 of the bridge towards the flange 5.
  • the shaped part 30 is composed essentially of two projections 33, 34 directed towards the flange 5; the recess 31 is defined between these two projections.
  • the slider in this embodiment does not have moving parts.
  • the body 2 is preferably formed as one piece, including the bridge 6 and the above-described shaped part 30.
  • the spring 11 does not have the tooth 16 or other means for engagement and lock of the teeth. In this embodiment the only function of the spring 11 is to retain the pull tab.

Landscapes

  • Slide Fasteners (AREA)
EP18215125.8A 2018-12-21 2018-12-21 Schieber für reissverschluss Withdrawn EP3669691A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18215125.8A EP3669691A1 (de) 2018-12-21 2018-12-21 Schieber für reissverschluss

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18215125.8A EP3669691A1 (de) 2018-12-21 2018-12-21 Schieber für reissverschluss

Publications (1)

Publication Number Publication Date
EP3669691A1 true EP3669691A1 (de) 2020-06-24

Family

ID=66439838

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18215125.8A Withdrawn EP3669691A1 (de) 2018-12-21 2018-12-21 Schieber für reissverschluss

Country Status (1)

Country Link
EP (1) EP3669691A1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2072256A (en) * 1980-03-04 1981-09-30 Yoshida Kogyo Kk Automatic lock slider for slide fasteners
EP0856264A1 (de) * 1997-01-31 1998-08-05 Ykk Corporation Automatisch verriegelbarer Schieber für Reissverschluss
US20120204384A1 (en) * 2009-12-25 2012-08-16 Ykk Corporation Slider for Slide Fastener
WO2014064753A1 (ja) * 2012-10-22 2014-05-01 Ykk株式会社 スライドファスナー用スライダー

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2072256A (en) * 1980-03-04 1981-09-30 Yoshida Kogyo Kk Automatic lock slider for slide fasteners
EP0856264A1 (de) * 1997-01-31 1998-08-05 Ykk Corporation Automatisch verriegelbarer Schieber für Reissverschluss
US20120204384A1 (en) * 2009-12-25 2012-08-16 Ykk Corporation Slider for Slide Fastener
WO2014064753A1 (ja) * 2012-10-22 2014-05-01 Ykk株式会社 スライドファスナー用スライダー

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