WO2020016885A1 - Dispositif d'arrêt d'écrou destiné à prévenir un desserrage - Google Patents

Dispositif d'arrêt d'écrou destiné à prévenir un desserrage Download PDF

Info

Publication number
WO2020016885A1
WO2020016885A1 PCT/IL2019/050792 IL2019050792W WO2020016885A1 WO 2020016885 A1 WO2020016885 A1 WO 2020016885A1 IL 2019050792 W IL2019050792 W IL 2019050792W WO 2020016885 A1 WO2020016885 A1 WO 2020016885A1
Authority
WO
WIPO (PCT)
Prior art keywords
nut
wire
stopper
bolt
thread
Prior art date
Application number
PCT/IL2019/050792
Other languages
English (en)
Inventor
Philip Bogrash
David Frankfurter
Original Assignee
Philip Bogrash
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 Philip Bogrash filed Critical Philip Bogrash
Publication of WO2020016885A1 publication Critical patent/WO2020016885A1/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
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/12—Nuts or like thread-engaging members with thread-engaging surfaces formed by inserted coil-springs, discs, or the like; Independent pieces of wound wire used as nuts; Threaded inserts for holes
    • 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
    • F16B39/20—Locking of screws, bolts or nuts in which the locking takes place after screwing down by means of steel wire or the like
    • 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
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • F16B39/284—Locking by means of elastic deformation

Definitions

  • This invention relates to fasteners and in particular to devices for nut loosening prevention.
  • the other end of that wire stopper device is intended to either enter a hole or a suitable indentation on the nut’s top surface or to have either a wire loop or semi-loop to be placed onto the nut - in both cases the intent is to assure that there is no relative movement between said wire stopper device and the nut thereby making sure that the elastic force produced by the flexed wire end, affixed to the nut as described above, continues by pivoting the wire stopper around the bolt to gently press said pointed wire end into said opening.
  • the above described wire stopper device thus requires either the changes to the standard nut such as holes or indentations on top surface or needs a wire loop or semi loop.
  • JP2001059514 Another example of a nut stopper comprised of wire is presented in JP2001059514 wherein a spring with a handle at its rear and optionally a sharpened tip are presented.
  • the use of a cap put onto said spring to tighten said spring’s grip onto the bolt shank is also described.
  • the handle, as described in said patent can only be used to screw said spring into position; to remove it it needs to be pulled off, for example with pliers, and discarded. Thus the removal is destructive; there is no reuse.
  • the recommended combination of said spring with cap is relatively expensive and requires extra effort to install it.
  • One object of the present invention is to provide a coiled wire nut stopper with one sharp wire end for insertion into clearance between the end of nut thread and bolt thread channel and having handles for screwing it onto the bolt and off the bolt
  • Another object is to provide a coiled nut stopper with reversible top and bottom and both ends of its wire sharp for reversibility and fool-proofing it. Another object is to provide said coiled wire nut stopper with handles to enable its easy screwing onto and off the bolt.
  • Another object is to provide said coiled wire nut stopper with structural features to enable temporary wire stopper diameter expansion for easily putting it on the bolt or removing it without screwing.
  • Another object is to provide said coiled wire nut stopper with at least the leading handle close enough to leading wire tip to come into contact with nut top surface facing it to exert elastic force on the nut opposing its unscrewing.
  • Fig 1 shows top view of coiled wire nut stopper of first embodiment.
  • Fig 2 shows a view from the side of coiled wire nut stopper of second embodiment.
  • Fig 3 shows top view of a coiled wire nut stopper of second embodiment, second version
  • Fig 4 shows view from the top of a coiled wire nut stopper of third embodiment.
  • Fig 5 shows a top view of a coiled wire nut stopper of fourth embodiment.
  • Fig 6 shows a top view of second version of fourth embodiment.
  • Fig 7 shows top view of nut stopper of fifth embodiment.
  • Fig 8 shows side view of nut stopper of sixth embodiment.
  • the first embodiment of the coiled wire nut stopper of this invention (Fig 1 ) has one pointed or suitably sharpened wire end (1 ) for insertion into clearance between the end of nut thread and bolt thread channel, to jam it thus preventing the nut from loosening and unscrewing due to vibration.
  • the coils (4) of the wire are of a diameter suitable to hug the thread of the bolt (3) with predetermined degree of compressive force and are of diameter smaller by a predetermined amount than the diameter of the thread.
  • the coil facing the nut may be optionally made of slightly varying radius along its circumference with the part of said coil closest to the leading pointed or sharpened end being of a radius closer to that of the bolt thread.
  • the rest of the first (or only coil) is of a radius smaller by predetermined amount than the radius of the bolt thread.
  • the following coil(s) will also have radiuses smaller than the radius of the bolt’s threaded shank by a predetermined amount.
  • the wire cross-section may be round or of other suitable shapes, such as for example oval, triangular or diamond shape to fit into the thread better.
  • the pitch of the coils can be made smaller by a predetermined amount than that of the bolt thread; the result of that is that they are being subjected to not only a radial but a lengthwise extension and thus produce high level of static friction with bolt threads, thereby precluding the stopper’s turning and thus its axial displacement along the bolt.
  • the 2 handles (2) are produced by bending the wire into loops. Preferably one handle (2) is located on the first coil/only coil at a predetermined distance to the sharpened end of the wire, while the second handle is preferably located on the last coil at a predetermined distance to the trailing end of the wire.
  • the second handle (2) is preferably located in a diametrically opposite point to the first and can optionally have the handles of such length, so that the distance between their tips (2a) is the same as the distance between the opposing corner points of the nut a given coiled wire stopper is to be used with, although said distance between tips can be slightly smaller making the socket easier to place on the stopper, whereas said socket would be able to turn it for the instances where the coils compressive force and therefore static friction against the bolt thread are relatively limited.
  • they can be produced by bending the wire to form broader wire loops with the length of wire after the handle until its end shaped to curve around the bolt to prevent excessive flexing and residual deformation of handles when force is applied to them.
  • the second embodiment, (Fig 2) is similar to the first embodiment, except the trailing end of wire on the last coil is also made pointed or sharpened (1 ), while the trailing handle is located relative to trailing end similarly and generally diametrically opposite to the leading handle (2) located after the leading sharp end (1 ) of first coil, thereby making it possible, that either end of the nut stopper could be in contact with and jamming the nut.
  • This embodiment would make the use of nut stopper easier and more foolproof.
  • the second version of this embodiment (Fig 3) will dull wire ends (5), but will instead rely on the relatively smaller wire diameter or size (for non-circular wire cross- sections) for penetrating the clearance between the end of nut thread and bolt thread channel with either of its wire ends.
  • the third embodiment can have either one or two sharp wire ends for insertion into clearance between the end of nut thread and bolt thread channel or like in the second embodiment the wire comprising the nut stopper can be thin enough to enter said clearance.
  • the handles (2) are located along the coils at a plurality of points so that their tips form a shape such as a square, hexagon etc, possibly also forming a 3 dimensional shape having significant height as well due to handles location on different coils and thus at different levels, suitable for use of sockets or wrenches.
  • the handles themselves can have straight parts at their tips to promote improved hold of sockets or wrenches.
  • the nut stopper of third embodiment can also be made symmetrical with symmetrical locations of the handles along the coils and close to wire ends.
  • the nut stopper of fourth embodiment, first version will have non-round coils, possibly of complex shape as shown, for example, on Fig 5 which will have parts of them lodged in the thread (6) and other parts (7) whose function is to provide the structure for the socket or a wrench to hold onto.
  • the number of coils required will need to be predetermined to assure that a sufficient static friction force is produced.
  • Second version of this embodiment (Fig 6) will have a predetermined number of coils forming shapes such as rectangles, squares, hexagons or other shapes suitable for gripping by a wrench or a socket wherein the bolt shank’s end is to be put through an opening in said coils (8) produced by drilling and/or broaching a circular widening in said coil stack of a diameter smaller by a
  • the nut stopper of the fifth embodiment may have one or two sharp tips (1 ).
  • it can be implemented like the second version of second embodiment by using a thinner wire whose ends are able to enter clearance between the end of nut thread and bolt thread channel even if dull.
  • it has leading (2) and trailing handles (2a) which are located not in the diametrically opposing positions as in those embodiments, but rather closer together, when seen from above, at a predetermined distance from each other on the same side of nut stopper; either the side where the wire ends are or the opposing side.
  • the predetermined distance between said handles must be such that it is possible to pull the handles close together to a predetermined distance between them using fingers or tools, such as for example pliers.
  • the nut stopper of the sixth embodiment is not designed to penetrate the clearance between the end of nut thread and bolt thread channel.
  • it has an end of wire of a diameter or size (for non-circular wire cross-sections) which will prevent it entering said clearance.
  • this nut stopper will not have the tip jammed in said clearance it has to have sufficient static friction force holding it in place which can be accomplished by making its coil’s predetermined inner diameter relatively smaller by a predetermined amount than the inner diameter of a nut stopper for the same thread size with wire tip(s) designed to penetrate said clearance.
  • the radially compressive force and therefore static friction holding the nut stopper in place can be increased by increasing the wire thickness by a predetermined amount, while keeping the predetermined inner diameter the same or by a predetermined combination of changes in these two parameters.
  • the second version of this embodiment (Fig 8) likewise won’t have the tip(s) designed to penetrate said clearance between the end of nut thread and bolt thread channel.
  • the wire ends (5) are to be located within a predetermined, comparatively shorter distance from the leading handle (9) to assure that the leading handle comes into contact with the nut’s top surface (10) first and prevents significant further advancement of the nut stopper, as any further
  • the nut stopper (Fig 1 ) of the first embodiment is screwed onto the threaded part of the bolt shank protruding from the nut.
  • the sharp leading end of the wire comprising the nut stopper enters the clearance between the end of nut’s thread and the thread channel thereby jamming the nut; thus assuring that it cannot move backward.
  • the coils of the nut stopper (4) are hugging the bolt and press radially towards its thread thus creating a significant static friction force acting along the full combined length of the coil(s) and thereby preventing backing off by the nut stopper.
  • the handles (2) are used for screwing or unscrewing the nut stopper onto the bolt end.
  • the operation of the second embodiment’s first version is similar to the operation of first embodiment (Fig 2), except it is reversible, as it has sharp tips (1 ) on its top and bottom it can be screwed in from either of its ends.
  • nut stopper of this embodiment made of wire thin enough to enter the clearance between the end of nut’s thread and the bolt’s thread channel even if dull, the same use is possible; as the nut stopper can be screwed in from either of its ends and either of its wire ends will enter said clearance jamming the nut.
  • the wire stopper of third embodiment can be implemented with either one or two tips or made of wire thin enough to enter the clearance between the end of nut’s thread and the bolt’s thread channel, even if dull. So accordingly it can be used like the above-described embodiments, but with one significant difference due to the handle tips (2) being a plurality, whereas their tips are forming shapes suitable for use of sockets or wrenches. Thus screwing in or unscrewing of the nut stopper of this embodiment can be done by hand for smaller thread sizes, but generally is done using sockets or wrenches.
  • the wire stopper of fourth embodiment can be implemented with either one or two tips or be made of wire thin enough to enter the clearance between the end of nut’s thread and the bolt’s thread channel, even if dull. So accordingly it can be used just like the nut stopper of third embodiment, as its difference is only in the non-circular shape of coils (7) and the way it is manufactured.
  • the nut stopper of fifth embodiment can be operated just like the nut stopper of first or second embodiments, being screwed onto the bolt or off the bolt end.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Abstract

L'invention concerne un dispositif d'arrêt d'écrou à fil métallique spiralé devant être placé sur le sommet d'un écrou par vissage sur la partie de boulon saillant à partir de l'écrou. La plupart des versions de dispositifs d'arrêt d'écrou présentent une extrémité avant pointue du fil métallique entrant dans l'espace libre situé entre l'extrémité du filetage de l'écrou et le canal de filetage du boulon, coinçant l'écrou pour empêcher le desserrage de celui-ci. Les spirales épousent étroitement le boulon pour maintenir le dispositif d'arrêt d'écrou en place. Le dispositif d'arrêt d'écrou peut être rendu symétrique avec deux extrémités de fil métallique pointues. Le dispositif d'arrêt d'écrou peut être mobile au moyen de deux poignées à base d'une boucle de fil métallique, situées sur des spirales avant et arrière, ou au moyen d'une pluralité de poignées situées le long des spirales dont les extrémités revêtent une forme convenant à une saisie soit par une main soit par une clé ou une douille. Des dispositifs d'arrêt d'écrou à deux poignées sur des spirales avant et arrière situées à proximité l'une de l'autre dans un plan horizontal permettent qu'une pression sur ces poignées pour les rapprocher l'une de l'autre agrandit le diamètre des spirales et permet de placer ou d'enlever facilement le dispositif d'arrêt d'écrou sans visser celui-ci.
PCT/IL2019/050792 2018-07-14 2019-07-14 Dispositif d'arrêt d'écrou destiné à prévenir un desserrage WO2020016885A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201862698026P 2018-07-14 2018-07-14
US62/698,026 2018-07-14
US201862743850P 2018-10-10 2018-10-10
US62/743,850 2018-10-10

Publications (1)

Publication Number Publication Date
WO2020016885A1 true WO2020016885A1 (fr) 2020-01-23

Family

ID=69164863

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL2019/050792 WO2020016885A1 (fr) 2018-07-14 2019-07-14 Dispositif d'arrêt d'écrou destiné à prévenir un desserrage

Country Status (1)

Country Link
WO (1) WO2020016885A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112963430A (zh) * 2020-03-04 2021-06-15 伯尔霍夫连接技术有限公司 装配锁定装置、有该装置的螺栓、带螺栓的部件及装置制造方法和带该装置的螺栓装配方法
WO2021210057A1 (fr) * 2020-04-14 2021-10-21 イイファス株式会社 Écrou indesserrable

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US939124A (en) * 1908-08-20 1909-11-02 Howard P Davies Nut-lock.
US1609509A (en) * 1926-04-17 1926-12-07 Crisman Fred Nut lock
US1738482A (en) * 1928-05-05 1929-12-03 John A Prussen Nut lock
GB857058A (en) * 1958-12-03 1960-12-29 Heli Coil Corp A method and means for producing self-locking screw thread forming wire coils
US3165136A (en) * 1960-06-03 1965-01-12 Billy M Horton Wire nut with workpiece engaging means
US6059501A (en) * 1997-10-10 2000-05-09 Van Dyke; Peter F. Locking ring device
US20080260491A1 (en) * 2004-06-07 2008-10-23 Taijiro Soeda Fall-Off Preventing Element and Loosening Preventing Nut
US20100028103A1 (en) * 2006-12-26 2010-02-04 Masamichi Soeda Fall-off preventing element
US20120000062A1 (en) * 2010-07-05 2012-01-05 Bollhoff Verbindungstechnik Gmbh Threaded element, screw with threaded element, installation method therefore and a component with installed threaded element
WO2018061005A1 (fr) * 2016-09-29 2018-04-05 Philip Bogrash Systèmes de fixation avec prévention de sur-serrage et de desserrage

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US939124A (en) * 1908-08-20 1909-11-02 Howard P Davies Nut-lock.
US1609509A (en) * 1926-04-17 1926-12-07 Crisman Fred Nut lock
US1738482A (en) * 1928-05-05 1929-12-03 John A Prussen Nut lock
GB857058A (en) * 1958-12-03 1960-12-29 Heli Coil Corp A method and means for producing self-locking screw thread forming wire coils
US3165136A (en) * 1960-06-03 1965-01-12 Billy M Horton Wire nut with workpiece engaging means
US6059501A (en) * 1997-10-10 2000-05-09 Van Dyke; Peter F. Locking ring device
US20080260491A1 (en) * 2004-06-07 2008-10-23 Taijiro Soeda Fall-Off Preventing Element and Loosening Preventing Nut
US20100028103A1 (en) * 2006-12-26 2010-02-04 Masamichi Soeda Fall-off preventing element
US20120000062A1 (en) * 2010-07-05 2012-01-05 Bollhoff Verbindungstechnik Gmbh Threaded element, screw with threaded element, installation method therefore and a component with installed threaded element
WO2018061005A1 (fr) * 2016-09-29 2018-04-05 Philip Bogrash Systèmes de fixation avec prévention de sur-serrage et de desserrage

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112963430A (zh) * 2020-03-04 2021-06-15 伯尔霍夫连接技术有限公司 装配锁定装置、有该装置的螺栓、带螺栓的部件及装置制造方法和带该装置的螺栓装配方法
US11339822B2 (en) 2020-03-04 2022-05-24 Böllhoff Verbindungstechnik GmbH Assembly locking device, thread bolt with assembly locking device, a component with installed thread bolt as well as a manufacturing method for the assembly locking device and an assembly method of the thread bolt with assembly locking device
WO2021210057A1 (fr) * 2020-04-14 2021-10-21 イイファス株式会社 Écrou indesserrable

Similar Documents

Publication Publication Date Title
US8608417B2 (en) Dual action disposable clamp
US20090304443A1 (en) Bolt with collar and flexible sleeve insert
CN112638588B (zh) 扣件取出装置
US8496421B1 (en) Ferrule lock nuts
US7033120B2 (en) Blind fastener and drive nut assembly and method of installation thereof
US20100327505A1 (en) Low profile dual-action disposable clamp
US20150343624A1 (en) Dutchman Fastener Removal Tool
CN112714682A (zh) 扣件取出工具及扣件退出装置的组合
EP2334937B1 (fr) Appareil comprenant un raccord à broche pour fixer un premier élément et un second élément l un à l autre, et procédés associés
WO2015118702A1 (fr) Boulon pourvu d'une fonction de verrouillage
EP2034197A1 (fr) Dispositif de fixation
WO2020016885A1 (fr) Dispositif d'arrêt d'écrou destiné à prévenir un desserrage
AU2020203095B2 (en) Internal thread chase
US9803679B1 (en) Deformable fastening thread providing wedge-effect
US20200284287A1 (en) Fastener systems with overtightening and loosening prevention
US20220168877A1 (en) Methods and Apparatuses for Extracting and Dislodging Fasteners
WO1997029875A1 (fr) Outil permettant de centrer un poinçon ou un foret sur la face rompue d'un boulon
JP2009052648A (ja) ナットの緩み止め具
US7677143B1 (en) Impact tool and method
US6401573B2 (en) Multipurpose tool for gripping cylindrical objects
US20080105092A1 (en) Bit for removing damaged screws
US20060193711A1 (en) Threaded bolt fastener
US6726421B2 (en) Tanged screw thread inserts with improved removability
JP2011179679A (ja) ロック用ピン機構
US6138530A (en) Locking collar removal tool

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19838398

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19838398

Country of ref document: EP

Kind code of ref document: A1