US3919746A - Automatically locking slider for slide fasteners - Google Patents

Automatically locking slider for slide fasteners Download PDF

Info

Publication number
US3919746A
US3919746A US545360*A US54536075A US3919746A US 3919746 A US3919746 A US 3919746A US 54536075 A US54536075 A US 54536075A US 3919746 A US3919746 A US 3919746A
Authority
US
United States
Prior art keywords
slider body
leaf spring
slider
locking
side strips
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.)
Expired - Lifetime
Application number
US545360*A
Other languages
English (en)
Inventor
Takeo Fukuroi
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.)
YKK Corp
Original Assignee
Yoshida Kogyo 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 Yoshida Kogyo KK filed Critical Yoshida Kogyo KK
Application granted granted Critical
Publication of US3919746A publication Critical patent/US3919746A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • 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
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/25—Zipper or required component thereof
    • Y10T24/2561—Slider having specific configuration, construction, adaptation, or material
    • Y10T24/2566—Slider having specific configuration, construction, adaptation, or material including position locking-means attached thereto
    • Y10T24/257—Slider having specific configuration, construction, adaptation, or material including position locking-means attached thereto having surface engaging element shifted by reorientation of pull tab
    • Y10T24/2571—Resilient or spring biased element

Definitions

  • An automatic slider lock mechanism including a locking leaf spring arranged longitudinally over the top wing of the slider body.
  • the locking leaf spring is slitted longitudinally to be divided into a central strip and a pair of side strips which are all interconnected at the front end of the spring.
  • Two pairs of spring retainers are formed on the top wing of the slider body to engage the side strips only of the locking leaf spring.
  • the central strip has a locking pawl at its rear end which normally extends downwardly over the rear end of the top wing into the guide channel in the slider body.
  • the pull tab of the slider surrounds at one end the locking leaf spring in such a manner that the locking pawl retracts away from the guide channel only when there is a pull on the pull tab.
  • FIG. 3 4 Claims, 4 Drawing Figures Ill H v2O1 20 M US. Patent Nov. 18, 1975 FIG! FIG. 3
  • FIG-4 I turely'.
  • This invention relates generally to slide fasteners and more specifically to an automatically locking slider for slide fasteners. Even more specifically, the invention is directed to an'automatic slider lock mechanism of the type including a leaf spring arranged longitudinally over the slider body and-having a locking pawl at one end which normally is urged into interference contact with rows of interlocking" fastener elements passing through the slider body to-lock the slider against movement thereon and which retracts out of contact therewith to unlock the slider when a pull is exerted on the pull tab of the slider.
  • thelock ing leaf spring has a far greater effective length than the springs used in the prior art lock mechanisms of comparable classQthereby contributing materially toward the longer service life and more positive, efficient performance of the mechanism according to the invention
  • this invention -provides, in a slide fastener sliderof the well known type, an automatic lock mechanism including a locking leaf springgenerally arranged longitudinallyoverthe top wing of the, slider body.
  • a pair of parallel spaced slits are formed lengthwise in the locking leaf spring to divide the same into a central strip and a pair, of side strips, thethree strips being all interconnected ,at the front end of thelocking leaf spring.
  • the locking spring is supported in position on the slider body by spring re-. taining means on its top wing adapted to engage the side strips only of the spring.
  • the central strip of the locking leaf spring has a portion extending rearwardly of the side strips to provide a locking pawl which normally projects into the usual guide channel in the slider body for interference contact with rows of interlocking fasteners elements passing therethrough.
  • the central strip also includes a raised portion intermediate both ends thereof which is adapted to be surrounded by the pull tab of the slider, in such a manner that the locking pawl moves out of interference contact with the fastenerelements when a pullis exerted on the pull tab.
  • the spring retaining means comprises a pair of spring retainers formed rather closer to the front end of the slider body to engage the outer edge portions of the respective side strips of the locking leaf spring, and another pair of spring retainers formed adjacent the rear end of the slider body to engage the rear end portions of the respective side strips.
  • the aforesaid effective length of the spring is far greater than that of the springs of the prior'art mechanisms.
  • the elasticity of the spring will remain constant for an extended length of time, so that the automatic lock mechanismaccording to the invention is highly endurable, functioning efficiently throughout the life expectationof the complete slide fastener.
  • FIG. 4 is also a sectional view taken along the plane of line IV-IV in FIG. 1.
  • the slider for use with the automatic lock mechanism according to the invention can be of thewell known type comprising a body 10 and a pull tab 11.
  • the slider body 10 has a flared front end 12 and a contracted rear end 13 and is comprised of a top wing 14 and a bottom wing 15.
  • the top and bottom wings l4 and 15 have flanges 16 along their marginal edges and are interconnected by a web or neck 17 located centrally at the flared front end 12 of the slider body 10.
  • the usual Y-shaped guide channel is thus formed through the slider body. 10 to permit rows of interlocking fastener elements, not shown, to pass therethrough asthe slider is moved therealong to open or close the slide fastener.
  • the automatic lock mechanism shown in its preferred form in the drawings, includes a locking leaf spring 18 generally arranged longitudinally over the top wing 14 of the slider body 10.
  • the locking leaf spring 18 has a pair of parallel spaced slits 19 formed lengthwise therein.
  • the slits 19 extend from the rear end of the locking leaf spring 18 and terminate short of its front end.
  • Enlarged portions 20 may be formed at the front extremities of the respective slits 19.
  • the slits 19 are intended to divide the locking leaf spring 18 into a central strip 21 and a pair of identical side strips 220 and 22b flanking the central strip. These strips 21, 22a and 22b, of course, are interconnected at the front end of the locking leaf spring 18.
  • a pair of transversely spaced spring retainers 23a and 23b Projecting upwardly from the top wing 14 of the slider body 10 are a pair of transversely spaced spring retainers 23a and 23b, which are located rather closer to the flared front end 12 of the slider body, and another pair of transversely spaced spring retainers 24a and 24b which are located adjacent the contracted rear end 13 of the slider body.
  • the spring retainers 23a and 23b are arranged on both sides of the locking leaf 18 to engage the outer edge portions of the respective side strips 22a and 22b, whereas the other spring retainers 24a and 24b engage the rear end portions of the respective side strips, as shown in FIG. 1 and in greater detail in FIGS. 3 and 4.
  • the locking leaf spring 18 is thus securely supported in position on the slider body 10.
  • the central and side strips 21, 22a and 22b of the locking leaf spring 18 have raised portions 25, 26a and 26b, respectively, which are arranged in transverse alignment between the pairs of spring retainers 23a and 23b, and 24a and 24b. It will be noted from FIGS. 1 and 2 that the raised portion 25 of the central strip 21 is of greater extent than the raised portions 26a and 26b of the side strips 22a and 22b.
  • the pin 27 has a protuberance 29 in its mid-portion extending in the general plane of the pull tab 11 for slidable engagement with the raised portion 25 of the central strip 21.
  • the central strip 21 of the locking leaf spring 18 has a portion extending rearwardly of the side strips 22a and 22b. This portion is adapted to provide a locking pawl 30 which extends downwardly over the rear end of the top wing 14, normally for interference contact with the unshown rows of fastener elements passing through the Y-shaped guide channel in the slider body
  • a pull is exerted on the pull tab 11 surrounding the locking leaf spring 18 at one end thereof to move the slider along the rows of interlocking fastener elements in either direction
  • the protuberance 29 of the pin 27 at the bifurcated end of the pull tab becomes held at a certain angle to the plane of the top wing 14 of the slider body 10.
  • an automatic lock mechanism comprising, in combination, a locking leaf spring generally arranged longitudinally over said top wing of said slider body, said locking leaf spring having a pair of parallel spaced slits extending lengthwise from its rear end and terminating short of its front end whereby said locking leaf spring is divided into a central strip and a pair of side strips which are interconnected at the front end of said locking leaf spring, and spring retaining means on said top wing of said slider body adapted to engage said side strips of said locking leaf spring to retain the latter on said slider body, said central strip of said locking leaf spring having a portion extending rearwardly of said side strips to provide a locking pawl which normally projects into said guide channel in said slider body, said central'strip of
  • said spring retaining means comprises a first pair of spring retainers formed on said top wing adjacent the front end of said slider body to engage the outer edge portions of said side strips, respectively, and a second pair of spring retainers formed on said top wing adjacent the rear end of said slider body to engage the rear end portions of said side strips, respectively.

Landscapes

  • Slide Fasteners (AREA)
US545360*A 1974-02-07 1975-01-30 Automatically locking slider for slide fasteners Expired - Lifetime US3919746A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1974015866U JPS5426083Y2 (enrdf_load_stackoverflow) 1974-02-07 1974-02-07

Publications (1)

Publication Number Publication Date
US3919746A true US3919746A (en) 1975-11-18

Family

ID=11900711

Family Applications (1)

Application Number Title Priority Date Filing Date
US545360*A Expired - Lifetime US3919746A (en) 1974-02-07 1975-01-30 Automatically locking slider for slide fasteners

Country Status (6)

Country Link
US (1) US3919746A (enrdf_load_stackoverflow)
JP (1) JPS5426083Y2 (enrdf_load_stackoverflow)
DE (1) DE2504811B2 (enrdf_load_stackoverflow)
FR (1) FR2260309B1 (enrdf_load_stackoverflow)
GB (1) GB1476051A (enrdf_load_stackoverflow)
IT (1) IT1032574B (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4662036A (en) * 1984-10-12 1987-05-05 Opti Patent-, Forschung- Und Fabrikations - Ag Slide fastener slider
US5152036A (en) * 1990-04-12 1992-10-06 Yoshida Kogyo K. K. Lockable slide fastener slider

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3342453C2 (de) * 1983-11-24 1987-03-19 Opti Patent-, Forschungs- Und Fabrikations-Ag, Riedern-Allmeind Reißverschlußschieber

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3016592A (en) * 1959-05-12 1962-01-16 Talon Inc Automatic lock slider for slide fasteners

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3016592A (en) * 1959-05-12 1962-01-16 Talon Inc Automatic lock slider for slide fasteners

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4662036A (en) * 1984-10-12 1987-05-05 Opti Patent-, Forschung- Und Fabrikations - Ag Slide fastener slider
US5152036A (en) * 1990-04-12 1992-10-06 Yoshida Kogyo K. K. Lockable slide fastener slider

Also Published As

Publication number Publication date
DE2504811B2 (de) 1978-12-07
FR2260309A1 (enrdf_load_stackoverflow) 1975-09-05
DE2504811A1 (de) 1975-08-14
GB1476051A (en) 1977-06-10
FR2260309B1 (enrdf_load_stackoverflow) 1979-03-16
IT1032574B (it) 1979-06-20
JPS50107304U (enrdf_load_stackoverflow) 1975-09-03
JPS5426083Y2 (enrdf_load_stackoverflow) 1979-08-30

Similar Documents

Publication Publication Date Title
US3641634A (en) Slider for zip fasteners
KR870001692Y1 (ko) 착탈 가능한 견인탭을 가진 슬라이드 파스너 슬라이더
US3973300A (en) Fastener slider
KR870003838Y1 (ko) 슬라이드 파스너의 자동 잠금 슬라이더
US4488588A (en) Cord lock for venetian blind
US4244087A (en) Separable slide fastener
US3900926A (en) Separable slide fastener
US3818549A (en) Slider for a slide fastener
US3919746A (en) Automatically locking slider for slide fasteners
US2262188A (en) Reverse lock slider
KR880000143B1 (ko) 슬라이드 파스너용 슬라이더
US2261132A (en) Lock slider for slide fasteners
US2296825A (en) Slider for slide fasteners
US2511491A (en) Automatic lock slider for slide fasteners
EP0567927B1 (en) Slider for slide fastener with automatic stop means
US3820203A (en) Locking sliders
US3068542A (en) Three-piece spring locking slider
US2599536A (en) Slider for slide fasteners
US3924306A (en) Lock slider
US2405883A (en) Reversible
US3267544A (en) Sliding clasp fasteners
US3419943A (en) Self-locking slider
US4129928A (en) Slide fastener
CA1051172A (en) Automatic lock slider
US2048636A (en) Separable fastener slider