EP3292958A1 - Ausziehverfahren für eine sicherungsschraube und auszieher zur anwendung des verfahrens - Google Patents

Ausziehverfahren für eine sicherungsschraube und auszieher zur anwendung des verfahrens Download PDF

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Publication number
EP3292958A1
EP3292958A1 EP16315008.9A EP16315008A EP3292958A1 EP 3292958 A1 EP3292958 A1 EP 3292958A1 EP 16315008 A EP16315008 A EP 16315008A EP 3292958 A1 EP3292958 A1 EP 3292958A1
Authority
EP
European Patent Office
Prior art keywords
extractor
screw
head
rod
drill
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.)
Granted
Application number
EP16315008.9A
Other languages
English (en)
French (fr)
Other versions
EP3292958B1 (de
Inventor
Yannick Dudot
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.)
Hubitools SA
Original Assignee
Hubitools 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
Priority to DK16315008.9T priority Critical patent/DK3292958T3/da
Application filed by Hubitools SA filed Critical Hubitools SA
Priority to DE16315008.9T priority patent/DE16315008T1/de
Priority to EP16315008.9A priority patent/EP3292958B1/de
Priority to ES16315008T priority patent/ES2774470T3/es
Priority to FR1770354A priority patent/FR3055823B3/fr
Priority to BE20175246A priority patent/BE1024703B1/fr
Priority to TW106130846A priority patent/TWI746632B/zh
Priority to US15/699,608 priority patent/US10478952B2/en
Publication of EP3292958A1 publication Critical patent/EP3292958A1/de
Application granted granted Critical
Publication of EP3292958B1 publication Critical patent/EP3292958B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • B25B27/18—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same withdrawing broken threaded parts or twist drills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/02—Arrangements for handling screws or nuts
    • B25B23/08—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation
    • B25B23/10—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means
    • B25B23/105—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means the gripping device being an integral part of the driving bit
    • B25B23/108—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means the gripping device being an integral part of the driving bit the driving bit being a Philips type bit, an Allen type bit or a socket

Definitions

  • the invention lies in the field of processes and tooling for automobile mechanics and concerns in particular the methods and tools for dismounting vehicle wheels, for example motor vehicles.
  • This specific tool is usually present in the vehicle. However, it may happen that this tool is lost or damaged preventing the user of the vehicle to change his wheel in case of puncture. The user must then call a professional mechanic who will either have the appropriate tool, or will have to find a solution to remove the security screw.
  • the object of the invention is to meet at least one of the disadvantages presented by the prior art by proposing a method and tools for disassembling vehicle wheels that have a universal character in that they are likely to be used. on safety screws of different models or which are broken.
  • the invention consists in substituting the security screw head or broken, the head of an extractor that can be manipulated by standard tools. To do this, the invention will couple in rotation the extractor with the screw to be loosened by forcing it into a bore in said screw.
  • the presence of the head and possibly a sleeve on the extractor forming a shoulder limits the depression of the extractor in the screw by abutment of the head of the screw on the head of the extractor or on the shoulder formed by the sleeve. This limitation of the depression of the rod of the extractor makes it possible to confine the rod of the extractor inside the screw and not to risk coming to hook the hub of the wheel while allowing the fitting of a rod of significant length in said screw.
  • the subject of the invention is an extractor for implementing the method described above, for extracting a safety screw or a broken screw, which is remarkable in that it comprises a rod toothed whose teeth are in the form of longitudinal ribs, and a head attached to one end of said rod, the head being preferably hexagonal.
  • the extractor comprises a sleeve disposed at the base of the head, the sleeve having a diameter greater than that of the stem and less than that of the head so as to form a shoulder with the rod. More preferably, the extractor is steel.
  • the extractor according to the invention is remarkable in that it allows to have a straight fitting having a large contact surface with the screw to be loosened, allowing to apply a loosening torque of up to 160 Nm or more to loosen the wash.
  • the fitting of the extractor until the abutment of the head or the shoulder presented by the sleeve makes it possible firstly to be able to control the length of insertion of the rod and to constrain it not to exceed of the screw rod.
  • the abutment avoids the beats during the manipulation of the extractor which would affect its retention in the screw, the head or the sleeve being placed in abutment against the screw.
  • the invention relates to the use of an extractor as defined above or an assembly as defined above for the extraction of a safety screw or a broken screw on a wheel of vehicle.
  • understand is synonymous with” include “and is not limiting in that it allows the presence of other elements in the device or the device. vehicle to which it relates. It is understood that the term “understand” includes the words “consist of”.
  • the extractor 1 used for the implementation of the method of extracting a screw such as a safety screw or a broken screw.
  • the extractor 1 according to the invention comprises a toothed rod 3 whose teeth, in the form of protruding ribs, extend longitudinally along the length of the rod 3, so that a cross section of the rod shows a configuration of star.
  • the extractor 1 also has a head 7 which is preferably hexagonal in shape so that it can be handled by the standard keys.
  • the extractor 1 is advantageously made of steel.
  • the head 7 and the rod 3 are fixed to each other irreversibly so that during the insertion of the rod 3 into the screw the head can serve as a stop to limit the depression of the extractor and support to avoid beatings during manipulations as we will see later.
  • the extractor 1 comprises a sleeve 9 disposed at the base of the head 7 and having a diameter greater than that of the rod 3 and less than that of the head 7 so as to form a shoulder 11 with the rod 3.
  • the step a) of drilling a bore is represented on the figure 2 in the context of the extraction of a security screw 13 called "reentrant" in that it is disposed at the bottom of a cavity presented by the rim 15 of the wheel.
  • This step therefore comprises drilling a bore 17 in the screw 13 to be loosened in the longitudinal direction thereof by means of a drill 19 of diameter less than the diameter of the rod 21 of the screw 13.
  • the security screw is shown with a round head 23. The drilling operation is in progress so that the bore has not yet reached the screw shank. Nevertheless, in the process according to the invention, the screw shank is hollowed along all or part of its length.
  • the length of the bore made in the screw is greater than 10 mm for example between 10 and 20 mm depending on the screw models considered.
  • This length of the bore will allow to receive an extractor whose rod has a corresponding length and which therefore provides a large contact surface. This large contact surface will allow the application of sufficient torque for the loosening of the screw.
  • the drilling is carried out by means of a drill 19.
  • the step (a) of drilling the bore is done by means of a drill comprising a tungsten carbide tip.
  • a drill comprising a tungsten carbide tip.
  • Such a drill can for example be obtained by slitting the tip of a traditional steel drill bit to insert a tungsten carbide insert. The use of such a drill makes it easier to drill safety screws when they are made of a hardened steel.
  • the diameter of the drill is equal to the diameter of the rod of the extractor so that the rod of the extractor can be engaged and be retained in the bore dug in the screw.
  • the bore 17 must be central relative to the head 23 of the screw since it then extends into the rod 21 of this screw. Also according to a preferred embodiment of the invention, and as represented on the figure 2 , the step (a) of drilling the bore is performed using a centralizer 25 for positioning and guiding the drill.
  • this centraliser can come in different forms.
  • the screw is a so-called "re-entrant” screw because it is positioned at the bottom of a cavity presented by the rim
  • the "reentrant screw” centralizer 25 will advantageously be in the form of a truncated cone pierced by a central duct on crossing on both sides in its longitudinal direction.
  • Such a centraliser is represented in figure 3 .
  • the conduit 27 has a diameter greater than that of the drill and has the function of positioning and guiding this drill.
  • the figure 4 presents another embodiment of a centralizer 29 according to the invention for centering and guiding the drill in the case of so-called "outgoing" screws, in that they are in relief on the rim.
  • the centralizer 29 "with outgoing screws” will then be in the form of a hollow socket, of cylindrical or frustoconical body 31, and traversed by a central duct 35 in communication with an internal cavity 33 opening on one of the ends of the body 31.
  • the inner cavity 33 has an inner conical shape so that its diameter decreases along its length from its mouth. This configuration will allow the centraliser to cap the screw head and be retained on the latter.
  • the central duct 35 of diameter greater than that of the rod the drill is used for positioning and guiding said drill.
  • the centralizer 29 has at the end opposite to that opening on the inner cavity 33 a protrusion 37 reproducing the shape of the head of the extractor, said protuberance 37 being traversed by said duct 35.
  • This protuberance 37 allows the user to use a chuck to come to position and drive the centralizer 29 on the head of the screw.
  • This impression centering device is in the form of a sleeve of cylindrical body 41, and having on at least one of its ends a cavity 43 of shape conjugated to a hexagonal screw head.
  • the body 41 has a central duct 45 passing therethrough on both sides in its longitudinal direction.
  • the conduit 45 has a diameter greater than that of the drill rod (and therefore the rod of the extractor) and is used for positioning and guiding the drill.
  • the impression 43 will hold the head in position and prevent it from rotating under the action of the drill during the drilling operation.
  • the body 31 has two diametrically opposite plates 47 to facilitate gripping and retention in position of the centraliser. More preferably, the centraliser has a fingerprint conjugated to a hexagonal screw head at each of its ends, said fingerprints having different dimensions.
  • At least one of the centralizers is made of plastic material, for example polyoxymethylene (POM) to limit the risk of damaging the paint and varnish rims. Nevertheless, it is also possible to produce them in metallic materials.
  • plastic material for example polyoxymethylene (POM)
  • the extractor according to the invention can be put in place.
  • the rod of the extractor is force-fitted into said bore during a step b) of fitting shown in FIG. figure 6 .
  • the fitting is made by longitudinal sliding along the bore and this sliding is generated by percussion on the head of the extractor by means of a percussion tool, for example a hammer.
  • the fitting of the extractor into the screw will couple in rotation the extractor and the screw.
  • the step (b) of fitting is carried out by placing a striking mandrel 51 between the extractor 1 and the hammer 49.
  • the striking mandrel 51 according to the invention comprises a end having a footprint 53 of shape conjugated to that of the head 7 of the extractor 1. The use of such a mandrel keeps the extractor in position for its fitting.
  • the extractor 1 is fitted until the base of its head comes into abutment against the head 27 of the screw, or when the extractor has a sleeve 9 against the shoulder 11 formed by the sleeve 9 with the 3.
  • This limitation of the depression of the extractor 1 ensures that the rod 3 thereof remains in the rod 21 of the screw 13. In fact, if the rod of the extractor exceeded the end of the screw shank, it would cling to the hub of the wheel which would make the loosening of the screw more difficult.
  • step c) extraction (not shown) by means of a key cooperating with the head of the extractor .
  • the straight character of the fitting associated with the extended contact surface makes it possible to obtain a loosening torque of at least 160 Nm, necessary for the loosening of the safety screws of the vehicle wheels.
  • the step (c) of extracting the screw is followed by a step (d) of unhooking the extractor of the screw into which it has been fitted, preferably by use of a stall chuck 55 as shown in FIG. figure 7 .
  • the separation of the screw 13 and the extractor 1 allows to reuse said extractor 1 for the extraction of another screw 13.
  • the stall operation can be performed when the extractors 1 have a sleeve 9 defining a space between the head 23 of the screw 13 and the head 7 of the extractor 1.
  • the stalling mandrel 55 has at one of its ends a fork 57 comprising two parallel teeth 59 of increasing thickness between their point 61 and their base 63.
  • the spacing between the teeth 59 of the stalling mandrel 55 is chosen to be greater than the diameter of the sleeve 9 and less than the diameter of the head 7 of the extractor. In the case where the stall chuck is used with an extractor having no sleeve, the spacing between the teeth of the stall chuck must be greater than the diameter of the rod of said extractor.
  • Step d) is illustrated on the figure 8 .
  • the screw 13 is held by the jaws 65 of a vise.
  • the stalling mandrel 55 is positioned to place the sleeve of the extractor 1 between its teeth 59.
  • the sleeve is then pressed between the teeth 59 of the fork by percussion.
  • the teeth 59 having an increasing height which at the base of said teeth is greater than the height of the sleeve, the depression of the extractor 1 will lift said extractor 1 to partially out of the screw 13.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
EP16315008.9A 2016-09-09 2016-09-09 Ausziehverfahren für eine sicherungsschraube und auszieher zur anwendung des verfahrens Active EP3292958B1 (de)

Priority Applications (8)

Application Number Priority Date Filing Date Title
DE16315008.9T DE16315008T1 (de) 2016-09-09 2016-09-09 Ausziehverfahren für eine sicherungsschraube und auszieher zur anwendung des verfahrens
EP16315008.9A EP3292958B1 (de) 2016-09-09 2016-09-09 Ausziehverfahren für eine sicherungsschraube und auszieher zur anwendung des verfahrens
ES16315008T ES2774470T3 (es) 2016-09-09 2016-09-09 Procedimiento de extracción de tornillos y extractor para la implementación del procedimiento
DK16315008.9T DK3292958T3 (da) 2016-09-09 2016-09-09 Fremgangsmåde til udtrækning af en skrue samt udtrækker til udøvelse af fremgangsmåden
FR1770354A FR3055823B3 (fr) 2016-09-09 2017-04-07 Procede d’extraction de vis de securite pour roues de vehicule automobile et extracteur pour la mise en œuvre du procede
BE20175246A BE1024703B1 (fr) 2016-09-09 2017-04-07 Procede d’extraction de vis de securite pour roues de vehicule automobile et extracteur pour la mise en oeuvre du procede
TW106130846A TWI746632B (zh) 2016-09-09 2017-09-08 用於取出車輪用安全螺絲的方法、執行該方法的取出器及工具組以及取出器及工具組的用途
US15/699,608 US10478952B2 (en) 2016-09-09 2017-09-08 Process for extracting security screw for wheels of motor vehicle and extractor for executing the process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16315008.9A EP3292958B1 (de) 2016-09-09 2016-09-09 Ausziehverfahren für eine sicherungsschraube und auszieher zur anwendung des verfahrens

Publications (2)

Publication Number Publication Date
EP3292958A1 true EP3292958A1 (de) 2018-03-14
EP3292958B1 EP3292958B1 (de) 2019-11-20

Family

ID=57047145

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16315008.9A Active EP3292958B1 (de) 2016-09-09 2016-09-09 Ausziehverfahren für eine sicherungsschraube und auszieher zur anwendung des verfahrens

Country Status (8)

Country Link
US (1) US10478952B2 (de)
EP (1) EP3292958B1 (de)
BE (1) BE1024703B1 (de)
DE (1) DE16315008T1 (de)
DK (1) DK3292958T3 (de)
ES (1) ES2774470T3 (de)
FR (1) FR3055823B3 (de)
TW (1) TWI746632B (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220040834A1 (en) * 2016-04-27 2022-02-10 Grip Holdings Llc Fastener Extractor Device
JP7198467B2 (ja) * 2018-08-21 2023-01-04 グリップ・ホールディングズ・エルエルシー ファスナー・エキストラクター
USD878882S1 (en) * 2018-08-29 2020-03-24 Chia-Hao Huang Bolt extractor
CN112692788A (zh) * 2021-03-01 2021-04-23 王伟 一种取锈死断螺丝方法

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US1798944A (en) * 1930-09-11 1931-03-31 Elmer F Jackman Tool for removing broken stud bolts and the like
US1875484A (en) * 1932-09-06 Schew extractor
EP0451256A1 (de) 1989-11-02 1991-10-16 Alden Corp Gerät zum entfernen von gebrochenen schrauben.
US6098499A (en) * 1998-07-16 2000-08-08 The Lisle Corporation Bolt extraction tool
US20030059267A1 (en) * 2001-09-26 2003-03-27 Simp'l Product, Inc. Guides for centering screws and drill bits in countersink holes
US20060191379A1 (en) * 2005-02-25 2006-08-31 Irwin Industrial Tool Company Fastener extractor
EP2228176A1 (de) 2009-03-11 2010-09-15 Lazzaro Groppo Diebstahlsicherungsverschlusssystem und Verfahren zu dessen Herstellung
DE102011050671A1 (de) * 2011-05-27 2012-11-29 Wohn-t-räume UG (haftungsbeschränkt) Hilfswerkzeug zum Einschlagen von Nägeln
DE102012104298A1 (de) * 2012-05-18 2013-11-21 Hafu Werkzeugfabrik H. J. Fuhrmann Gmbh Werkzeug

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US5649791A (en) * 1994-05-17 1997-07-22 Connolly; Matthew Apparatus and method for boring a hole in a broken bolt
DE19809252C2 (de) * 1998-03-05 2000-04-06 Robert Schroeder Gmbh & Co Schraubenausdreher
US6575057B1 (en) * 2002-04-18 2003-06-10 Lisle Corporation Broken heater hose coupler removal tool and method of use
US6978697B2 (en) * 2003-04-25 2005-12-27 Eazypower, Corporation Damaged bolt and screw removing devices
US20060101949A1 (en) * 2003-04-25 2006-05-18 Burton Kozak Damaged bolt and screw removing devices
US7007573B2 (en) * 2004-05-12 2006-03-07 Eazypower Corporation Impact driver and fastener removal device
US20060060031A1 (en) * 2004-09-23 2006-03-23 Ron Morris Broken bolt extractor apparatus and method
TWM290452U (en) * 2005-11-09 2006-05-11 Cosda Manu Facturing Company Eject removing tool for bolt post
TWI333448B (en) * 2008-03-27 2010-11-21 Bo Shen Chen New screw driver for removing broken screw
US9839995B2 (en) * 2011-09-26 2017-12-12 Magna Industries, Inc. Drain removal tool
TWM440846U (en) * 2012-04-20 2012-11-11 Li-Hua Huang Connection rod structure with screw head removing function
TWM441553U (en) * 2012-05-10 2012-11-21 Giant Brand Entpr Co Ltd A bit for removing damaged screws
TWM442238U (en) * 2012-08-01 2012-12-01 Shao-Hsien Hsu Screw head capable of removing a dead screw
TWI436863B (zh) * 2013-01-18 2014-05-11 Fu Hua Lin 拆卸工具
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Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1875484A (en) * 1932-09-06 Schew extractor
US1798944A (en) * 1930-09-11 1931-03-31 Elmer F Jackman Tool for removing broken stud bolts and the like
EP0451256A1 (de) 1989-11-02 1991-10-16 Alden Corp Gerät zum entfernen von gebrochenen schrauben.
US6098499A (en) * 1998-07-16 2000-08-08 The Lisle Corporation Bolt extraction tool
US20030059267A1 (en) * 2001-09-26 2003-03-27 Simp'l Product, Inc. Guides for centering screws and drill bits in countersink holes
US20060191379A1 (en) * 2005-02-25 2006-08-31 Irwin Industrial Tool Company Fastener extractor
EP2228176A1 (de) 2009-03-11 2010-09-15 Lazzaro Groppo Diebstahlsicherungsverschlusssystem und Verfahren zu dessen Herstellung
DE102011050671A1 (de) * 2011-05-27 2012-11-29 Wohn-t-räume UG (haftungsbeschränkt) Hilfswerkzeug zum Einschlagen von Nägeln
DE102012104298A1 (de) * 2012-05-18 2013-11-21 Hafu Werkzeugfabrik H. J. Fuhrmann Gmbh Werkzeug

Also Published As

Publication number Publication date
US10478952B2 (en) 2019-11-19
EP3292958B1 (de) 2019-11-20
FR3055823B3 (fr) 2018-12-07
BE1024703B1 (fr) 2018-06-07
TWI746632B (zh) 2021-11-21
US20180071903A1 (en) 2018-03-15
ES2774470T3 (es) 2020-07-21
BE1024703A1 (fr) 2018-05-29
DK3292958T3 (da) 2020-03-02
TW201815525A (zh) 2018-05-01
FR3055823A3 (fr) 2018-03-16
DE16315008T1 (de) 2019-01-03

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