WO2004113743A1 - Plaque de blocage de rondelle - Google Patents

Plaque de blocage de rondelle Download PDF

Info

Publication number
WO2004113743A1
WO2004113743A1 PCT/AU2004/000425 AU2004000425W WO2004113743A1 WO 2004113743 A1 WO2004113743 A1 WO 2004113743A1 AU 2004000425 W AU2004000425 W AU 2004000425W WO 2004113743 A1 WO2004113743 A1 WO 2004113743A1
Authority
WO
WIPO (PCT)
Prior art keywords
fastener head
locking plate
washer
fastener
locking device
Prior art date
Application number
PCT/AU2004/000425
Other languages
English (en)
Inventor
Thomas Stark Wilson
Original Assignee
Advanced Building Systems Pty 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 Advanced Building Systems Pty Ltd filed Critical Advanced Building Systems Pty Ltd
Priority to AU2004249785A priority Critical patent/AU2004249785B2/en
Publication of WO2004113743A1 publication Critical patent/WO2004113743A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
    • F16B39/10—Locking of screws, bolts or nuts in which the locking takes place after screwing down by a plate, spring, wire or ring immovable with regard to the bolt or object and mainly perpendicular to the axis of the bolt
    • F16B39/108—Locking of screws, bolts or nuts in which the locking takes place after screwing down by a plate, spring, wire or ring immovable with regard to the bolt or object and mainly perpendicular to the axis of the bolt with a locking washer under the nut or bolt head having at least one tongue or lug folded against the nut or bolt head, or against the object itself

Definitions

  • This invention relates to the secure fixing of nuts, bolts and the like, particularly in environments where such fixing means can work loose as a result of movement or interference. Such loosening can result in serious component failures and safety concerns.
  • Such fixing means particularly those in critical situations need to be locked in an efficient, simple but secure manner; most preferably, without specialised tools and single handed.
  • threaded nuts and bolts are universally recognised fixing means for the diverse range of components.
  • Such threaded fixing tools generally rely on friction at the thread interface to secure a nut or bolt in the "locked” position.
  • vibration, temperature fluctuations and many other environmental factors can act on such fixtures and cause them to loosen.
  • the invention provides a locking device for a rotation based fastener for fastening an object to a substrate said device comprising a washer adapted for placement between said fastener head and said object and a locking plate adapted for removable placement over said fastener head for co-operation therewith to prevent relative rotation of said locking plate and said fastener head wherein said locking plate and said washer are connected by a common portion being an integral foldable tab wherein said foldable tab is flexible but substantially non-elastic.
  • the washer may be provided with a first aperture adapted to receive the shank of the fastener such that the fastener head will abut the washer face and upon tightening be drawn into tight contiguous contact with the substrate.
  • the locking plate may be provided with a second aperture of smaller size than said fastener head, wherein said locking plate must be forcibly fitted over said fastener head causing said aperture to distort in a manner to secure said locking plate onto the head thereof and prevent relative rotation between the head and the locking plate.
  • the aperture may be circular and dimensioned to provide sufficient latitude to commence engagement with the fastener head, but require forcible fitting to fully engage said fastener head and once fitted over the head of the fastener prevent rotation thereof.
  • the locking device is preferably made from one piece and of unitary construction.
  • the locking plate is preferably of greater dimension than the fastener head.
  • the second aperture formed in the locking plate is preferably circular and of a diameter less than the distance between opposing highs of a polygonal fastener head (major diameter) and greater than the distance between opposing lows of said polygonal fastener head(minor diameter).
  • the fastener head is hexagonal in shape the highs occur at the corners of the hexagon and the lows occur at the flats of the hexagon
  • the aperture size can be between said average major and average minor diameters of said head.
  • the foldable tab is preferably formed as a narrow waist region between the larger washer and larger locking plate.
  • the foldable tab may include a transverse creasable region to assist in the bending of the device; but any such folding aids will add little or no elasticity to the foldable tab.
  • Figure 1 Shows a plan view of the integral locking device in a first embodiment
  • Figure 2 Shows a plan view of the locking device in a second embodiment.
  • Figure 3 Shows a side elevation of the locking device fitted to a fastener prior to locking down.
  • Figure 4 Shows a side elevation of the locking device after locking down .
  • Figure 5 Shows a perspective view of the locking device applied to a fastener.
  • the locking device is shown in two plan views where the locking device is adapted to co-operate with a rotation based fastener, for example, a bolt or nut or other threaded device having a fastener head (2), shown in phantom, and adapted for fixing an object to a substrate.
  • the device comprises a washer (1) having an aperture (8) through which the shank of the fastener can pass such that the fastener head, once drawn down so as to bring the object into contact with the substrate, bears down on the washer face in the usual manner of operation of a washer.
  • the device of the invention further comprises an integral locking plate (4) attached to the washer (1) by way of a foldable tab (5) having a foldable or crease region (6).
  • the locking plate (4) is provided with a second aperture (9) dimensioned to allow forced fitting to and over the fastener head (2).
  • the material of choice for the device is low carbon steel; but any suitably ductile and strand material could be used.
  • the locking device of the invention is fitted by placing the washer part on top of the object (3) to be fastened, and then securing the fastener head (2) onto the washer (1) through the first aperture (8).
  • An optional standard washer (7) can be used between the device and the fastener if required.
  • the second aperture is formed by way of a circular hole having a diameter between the major and minor diameters of the fastener head.
  • the fastener head is formed as a hexagonal bolt head or nut, with the major axis being the distance between opposing corners of the hexagonal fastener head and the minor diameter being the distance between the opposing flats of the hexagonal fastener head.
  • the force and swaging result assists in snugly engaging the locking plate to the fastener head by way of the coning effect thereby ensuring that the locking plate is securely fixed to the fastener head and cannot work loose.
  • a perspective view of the applied locking device of the invention shows the simple and intuitive nature of the device and clearly demonstrates the swaging effect of the forced application of the locking plate to the fastener head.
  • the combination of the non-elastic qualities of device's component material, which is preferably low carbon steel, and the coning effect of the forced application of the locking plate to the fastener head ensures that a secure, reliable and simplified locking device can now be applied to a wide range of situations
  • the material used in the device can be selected from any suitable malleable material having the requisite strength and characteristics to allow bending without undue elasticity.
  • the device of the invention provides many advantages over all of the known prior art.
  • the known prior art includes a range of hinged locking plates, which generally include pre-formed poly sided apertures for the locking plate, which do not require forced application to the fastener head and must be secured by other means to prevent them working loose.
  • the pre-formed configuration of the receiving aperture of the locking plate requires that the fastener head be rotated to specifically provide for the application of locking plate. Such rotations may well over or under torque the fastener head.
  • the device of the invention requires no movement of the fastener head beyond the optimum torqued position as the locking plate aperture is formed in situ during the application process as the locking head is forced onto the fastener head in its optimal position.
  • a further advantage of the locking device of the invention over the prior art results from the loop region (10) formed as the foldable tab is bent over the crease region (6).
  • the action of folding the foldable tab results in an open access loop (10) which is available to assist in removal of the locking device where a suitable tool or pry bar is placed into the access loop, allowing ready leverage of the locking plate away from the fastener head.
  • the device of the invention is principally intended for one off use, although recycling of the product is possible, providing the aperture of the locking plate is reinstated prior to re-use.
  • the invention provides for the first time a highly secure and simplified means for locking a fastening device in a manner that prevents the device from becoming loose during operation, installation or use.
  • the device of the invention is simple and intuitive to use and can be operated single handedly without the use of specialised tools. Once the device is in place, it is readily visible and provides a means of visual inspection confirming that the fastener under inspection is tight and secure without the need to check physically each fastener.
  • the device of the invention provides a highly secure means of locking a fastening device, it is readily removable without the use of specialised tools by the simple levering away of the locking plate from the fastener head.
  • the locking device of the invention can be colour matched to particular fasteners or situations so as to assist in inspection of finished work.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)

Abstract

Dispositif de blocage conçu pour un élément de fixation rotatif servant à fixer un objet (3) à un substrat. Ledit dispositif est composé d'une rondelle (1) conçue pour être placée entre la tête (2) dudit élément de fixation et ledit objet (3) et d'une plaque de blocage (4) conçue pour s'accoupler de manière amovible à ladite tête d'élément de fixation et pour coopérer avec cette dernière afin d'empêcher la rotation relative de ladite plaque de blocage et de ladite tête, ladite plaque de blocage et ladite rondelle étant accouplées par une partie commune consistant en une languette solidaire pliable (5) flexible mais pratiquement non élastique.
PCT/AU2004/000425 2003-06-20 2004-04-01 Plaque de blocage de rondelle WO2004113743A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2004249785A AU2004249785B2 (en) 2003-06-20 2004-04-01 Washer locking plate

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2003903135 2003-06-20
AU2003903135A AU2003903135A0 (en) 2003-06-20 2003-06-20 Washer locking plate

Publications (1)

Publication Number Publication Date
WO2004113743A1 true WO2004113743A1 (fr) 2004-12-29

Family

ID=31954173

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2004/000425 WO2004113743A1 (fr) 2003-06-20 2004-04-01 Plaque de blocage de rondelle

Country Status (2)

Country Link
AU (1) AU2003903135A0 (fr)
WO (1) WO2004113743A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007033411A1 (fr) 2005-09-23 2007-03-29 Advanced Building Systems Pty Ltd Plaquette frein de rondelle pouvant être estampée
WO2018073817A3 (fr) * 2016-10-17 2018-07-26 Philip Bogrash Systèmes de fixation pour bois avec prévention de serrage excessif et de desserrage
CN113646549A (zh) * 2019-03-26 2021-11-12 五十铃自动车株式会社 被紧固物

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US586024A (en) * 1897-07-06 Nut-lock
US1160389A (en) * 1915-08-11 1915-11-16 George W Deise Nut-lock.
US1332268A (en) * 1919-10-27 1920-03-02 Nainka Anthony Nut-lock
US4050494A (en) * 1976-06-18 1977-09-27 The United States Of America As Represented By The Secretary Of The Army Anti-rotation lock for fastener bolt

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US586024A (en) * 1897-07-06 Nut-lock
US1160389A (en) * 1915-08-11 1915-11-16 George W Deise Nut-lock.
US1332268A (en) * 1919-10-27 1920-03-02 Nainka Anthony Nut-lock
US4050494A (en) * 1976-06-18 1977-09-27 The United States Of America As Represented By The Secretary Of The Army Anti-rotation lock for fastener bolt

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007033411A1 (fr) 2005-09-23 2007-03-29 Advanced Building Systems Pty Ltd Plaquette frein de rondelle pouvant être estampée
EP1934489A1 (fr) * 2005-09-23 2008-06-25 Advanced Building Systems Pty Ltd. Plaquette frein de rondelle pouvant être estampée
EP1934489A4 (fr) * 2005-09-23 2009-03-04 Advanced Building Systems Pty Plaquette frein de rondelle pouvant être estampée
US7931430B2 (en) 2005-09-23 2011-04-26 Advanced Building Systems Pty Ltd Swagable washer locking plate
WO2018073817A3 (fr) * 2016-10-17 2018-07-26 Philip Bogrash Systèmes de fixation pour bois avec prévention de serrage excessif et de desserrage
CN113646549A (zh) * 2019-03-26 2021-11-12 五十铃自动车株式会社 被紧固物

Also Published As

Publication number Publication date
AU2003903135A0 (en) 2003-07-03

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