US3918754A - Plastics fasteners - Google Patents

Plastics fasteners Download PDF

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Publication number
US3918754A
US3918754A US57088575A US3918754A US 3918754 A US3918754 A US 3918754A US 57088575 A US57088575 A US 57088575A US 3918754 A US3918754 A US 3918754A
Authority
US
United States
Prior art keywords
latch
button
body portions
latch unit
unit according
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
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English (en)
Inventor
Stephen W Isbister
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.)
ITW Ltd
Original Assignee
ITW 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 ITW Ltd filed Critical ITW Ltd
Application granted granted Critical
Publication of US3918754A publication Critical patent/US3918754A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C19/00—Other devices specially designed for securing wings, e.g. with suction cups
    • E05C19/06—Other devices specially designed for securing wings, e.g. with suction cups in which the securing part if formed or carried by a spring and moves only by distortion of the spring, e.g. snaps
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S292/00—Closure fasteners
    • Y10S292/38—Plastic latch parts
    • 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
    • Y10T292/00—Closure fasteners
    • Y10T292/08—Bolts
    • Y10T292/1043—Swinging
    • Y10T292/1051—Spring projected
    • Y10T292/1052—Operating means
    • Y10T292/1056—Cam

Definitions

  • ABSTRACT [30] Foreign Application Primity Data A latch unit formed in one-piece of a resiliently flexi- P 1974 United Kingdom 18446/74 ble plastics material and comprising two body portions which are hinged to one another and which are fur- [52] US. Cl 292/224; 292/DIG. 38 th hi ged to a latch and a button respectively.
  • the [51] Int. Cl. i. EOSC 3/08 arrangement being such that the body portions can be Field Of Search 2/27 2 1 folded to a position in which they can be inserted into 292/DIG. 3 and held by an aperture in a panel. manual actuation of the button then causing movement of the latch l l References Cied from an operative position to an inoperative position.
  • a latch unit is formed in one-piece ofa resiliently flexible plastics material and comprises two body portions which are hinged to one another, and which are further hinged to a latch and a button respectively, the arrangement being such that the body portions can be folded to a position in which they can be inserted into and held by an aperture in a panel, manual actuation of the button then causing movement of the latch from an operative position to an inoperative position.
  • the body portions in their folded position define a hollow generally elongate body, with the latch being generally parallel to the axis, the button being generally perpendicular thereto and at least partially closing one end of said hollow body, and the latch and the button directly abutting one another.
  • Such a preferred latch unit can be readily applied to, for example, a spring-biased door of an automobile glove box.
  • the latch When the button is pressed, the latch will be moved thereby to its inoperative position (in which it no longer acts as a stop) thus allowing the glove box door to spring open.
  • FIG. 1 is a perspective view of a latch unit in its asmoulded position
  • FIG. 2 is a longitudinal section taken along the centre of FIG. 1, as indicated by the arrows IIII seen in FIG. 1, the latch unit having been folded to a position suitable for application to a glove box door;
  • FIG. 3 is a perspective view of merely a portion of the latch unit looking at the left-hand end of FIG. 1.
  • the latch unit is perfectly symmetrical about the longitudinally-extending plane IIII.
  • the latch unit in accordance with the present invention is a one-piece plastics moulding which has two flanges l and 12 for abutting one face of an apertured panel, at least one resiliently flexible barb for abutting the other face of the apertured panel, a hinge portion 14, a latch 16 having an oblique cam surface 18, and a button 20 having an oblique cam surface 22.
  • the material of the moulding is itself chosen to be resiliently flexible.
  • a suitable material is nylon 6.
  • a hollow frusto-conical body portion 24 which is semi-circular in end elevation; similarly-shaped body portion 26 lies between the flange 12 and the hinge 14.
  • the two body portions increase in cross-section from the hinge to the flanges.
  • the latch 16 is hinged to the body portion 24, the button 20 being hinged to the body portion 26 by a hinge portion 32.
  • Projecting radially-outwards from the frusto-conical surfaces are barbs 28 and 30, each of which is defined on three sides by a gap so that it can be resiliently flexed in a radially-inwards direction.
  • the latch unit is assembled by folding the body portion 26 downwards and towards the viewer, turning through 180 in an anti-clockwise sense to meet the body portion 24.
  • the button 20 is pressed ahead of the body portion 26 so as to pass between the flange l0 and the latch 16, as shown in FIG. 2.
  • the body portions 24 and 26 define a hollow generally elongate body, with the latch 16 being generally parallel totheaxis, the button 20 being generally perpendicular thereto and at least partially closing oneend of said hollow body, and the 'cam surfaces 18 and 22 formed on the latch 16 and the button 20 re spectively directly abutting, and thereby co-operating with one another.
  • the latch 16 and the button 20 are prevented from becoming separated from one another, when the body portions 24 and 26 are in their abovedescribed folded position, by a stepped shoulder 31 formed on the button 20 which can engage with the body portion 24 behind the flange l0. Flexing of the button 20 towards the far end of the hollow body is, however, still allowed by the hinge portion 32.
  • the shaping and dimensioning are such that when the two flanges l0 and 12 meet one another, the cam surface 22 has ridden-up the cam surface 18 and the latch 16 has been slightly biased in a clockwise sense relatively to the hinge 14.
  • the latch unit In its folded position the latch unit can be pressedinto an aperture in a panel, such as a glove box door (not shown).
  • the hinge 14 leads through the aperture, then the latch 16 is flexed resiliently inwards by engagement with the aperture edge, and finally the barbs 28 and 30 are similarly temporarily depressed.
  • the aperture diameter and the door thickness are chosen so that the door can be firmly gripped between the barbs and the adjacent flanges. The latch unit can thus be held in the condition seen in FIG. 2.
  • a latch unit formed in one-piece of a resiliently flexible plastics material and comprising two body portions which are hinged to one another, and which are further hinged to a latch and a button respectively, the arrangement being such that the body portions can be folded to a position in which they can be inserted into and held by an aperture in a panel, manual actuation of the button then causing movement of the latch from an operative position to an inoperative position.
  • a latch unit according to claim I in which the body portions in their folded position define a hollow generally elongate body, with the latch being generally parallel to the axis, the button being generally perpendicular thereto and at least partially closing one end of said hollow body, and the latch and the button directly abutting one another.
  • a latch unit according to claim 2 in which the button is formed with a stepped shoulder which can engage with that body portion carrying the latch to prevent the latch and the button becoming separated from 4 6.
  • operating oblique cam surfaces are formed on both the button and the latch.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lock And Its Accessories (AREA)
  • Push-Button Switches (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
US57088575 1974-04-26 1975-04-23 Plastics fasteners Expired - Lifetime US3918754A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1844674A GB1485413A (en) 1974-04-26 1974-04-26 Plastics fasteners

Publications (1)

Publication Number Publication Date
US3918754A true US3918754A (en) 1975-11-11

Family

ID=10112576

Family Applications (1)

Application Number Title Priority Date Filing Date
US57088575 Expired - Lifetime US3918754A (en) 1974-04-26 1975-04-23 Plastics fasteners

Country Status (9)

Country Link
US (1) US3918754A (de)
JP (1) JPS5814549B2 (de)
BR (1) BR7502481A (de)
CA (1) CA1019018A (de)
DE (1) DE2517641A1 (de)
ES (1) ES437019A1 (de)
FR (1) FR2268935B3 (de)
GB (1) GB1485413A (de)
SE (1) SE7504812L (de)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4023839A (en) * 1976-01-29 1977-05-17 Southco, Inc. Push button latch
US4061369A (en) * 1974-07-08 1977-12-06 Itw Limited Catches
DE2655031A1 (de) * 1976-12-04 1978-06-15 Messerschmitt Boelkow Blohm Verschlusselement fuer tueren u.dgl.
US4527821A (en) * 1982-09-29 1985-07-09 Nifco Inc. Latch device for door or lid
US4606567A (en) * 1982-11-02 1986-08-19 Nissan Motor Co., Ltd. Door latch operating device
US5158329A (en) * 1991-09-20 1992-10-27 Southco, Inc. Slam latch
DE4337752A1 (de) * 1992-11-19 1994-05-26 Southco Schnappschloß
AU654463B3 (en) * 1994-03-30 1994-11-03 Southco, Inc. Slam latch
ES2150321A1 (es) * 1995-08-21 2000-11-16 Southco "pestillo con resbalon".
US6213454B1 (en) 1999-03-31 2001-04-10 Illinois Tool Works Inc. Reverse air damper with latching mechanism
US20030193199A1 (en) * 2002-04-07 2003-10-16 Robin Talukdar Glovebox latch
US6730867B2 (en) 2000-07-07 2004-05-04 Southco, Inc. Electrically operated ratcheting pawl latch
US20090261700A1 (en) * 2008-04-18 2009-10-22 Ken-Ching Chen Positioning device for a drawer
CN101932784A (zh) * 2008-02-01 2010-12-29 诺托·弗朗克股份有限公司 具有手动的接合元件的长插销构件
US20140208620A1 (en) * 2013-01-29 2014-07-31 Aashika DAMODAR Flat-to-Heel Convertible Outsole

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2753381A1 (de) * 1977-11-30 1979-06-07 Sachs Systemtechnik Gmbh Magnetschaltschloss

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3103378A (en) * 1959-06-01 1963-09-10 Amerock Corp Spring catch
US3466076A (en) * 1967-09-15 1969-09-09 Southco Draw pull catch
US3767244A (en) * 1971-05-25 1973-10-23 Stanley Works Pty Locks

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3103378A (en) * 1959-06-01 1963-09-10 Amerock Corp Spring catch
US3466076A (en) * 1967-09-15 1969-09-09 Southco Draw pull catch
US3767244A (en) * 1971-05-25 1973-10-23 Stanley Works Pty Locks

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4061369A (en) * 1974-07-08 1977-12-06 Itw Limited Catches
US4023839A (en) * 1976-01-29 1977-05-17 Southco, Inc. Push button latch
DE2655031A1 (de) * 1976-12-04 1978-06-15 Messerschmitt Boelkow Blohm Verschlusselement fuer tueren u.dgl.
US4527821A (en) * 1982-09-29 1985-07-09 Nifco Inc. Latch device for door or lid
US4606567A (en) * 1982-11-02 1986-08-19 Nissan Motor Co., Ltd. Door latch operating device
US5158329A (en) * 1991-09-20 1992-10-27 Southco, Inc. Slam latch
DE4337752C2 (de) * 1992-11-19 2001-08-30 Southco Schnappschloß
DE4337752A1 (de) * 1992-11-19 1994-05-26 Southco Schnappschloß
AU654463B3 (en) * 1994-03-30 1994-11-03 Southco, Inc. Slam latch
ES2150321A1 (es) * 1995-08-21 2000-11-16 Southco "pestillo con resbalon".
US6213454B1 (en) 1999-03-31 2001-04-10 Illinois Tool Works Inc. Reverse air damper with latching mechanism
US6730867B2 (en) 2000-07-07 2004-05-04 Southco, Inc. Electrically operated ratcheting pawl latch
US7185927B2 (en) 2002-04-07 2007-03-06 Southco, Inc. Glovebox latch
US20030193199A1 (en) * 2002-04-07 2003-10-16 Robin Talukdar Glovebox latch
CN101932784A (zh) * 2008-02-01 2010-12-29 诺托·弗朗克股份有限公司 具有手动的接合元件的长插销构件
CN101932784B (zh) * 2008-02-01 2013-09-11 诺托·弗朗克股份有限公司 具有手动的接合元件的长插销构件
US20090261700A1 (en) * 2008-04-18 2009-10-22 Ken-Ching Chen Positioning device for a drawer
US8056994B2 (en) * 2008-04-18 2011-11-15 King Slide Works Co., Ltd. Positioning device for a drawer
US20140208620A1 (en) * 2013-01-29 2014-07-31 Aashika DAMODAR Flat-to-Heel Convertible Outsole
US9289025B2 (en) * 2013-01-29 2016-03-22 Aashika DAMODAR Flat-to-heel convertible outsole

Also Published As

Publication number Publication date
BR7502481A (pt) 1976-03-03
ES437019A1 (es) 1977-01-01
GB1485413A (en) 1977-09-14
JPS50149499A (de) 1975-11-29
CA1019018A (en) 1977-10-11
FR2268935A1 (de) 1975-11-21
DE2517641A1 (de) 1975-11-13
JPS5814549B2 (ja) 1983-03-19
SE7504812L (sv) 1975-10-27
FR2268935B3 (de) 1978-11-10

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