EP2029901A1 - Système de fixation - Google Patents

Système de fixation

Info

Publication number
EP2029901A1
EP2029901A1 EP07703460A EP07703460A EP2029901A1 EP 2029901 A1 EP2029901 A1 EP 2029901A1 EP 07703460 A EP07703460 A EP 07703460A EP 07703460 A EP07703460 A EP 07703460A EP 2029901 A1 EP2029901 A1 EP 2029901A1
Authority
EP
European Patent Office
Prior art keywords
screw
bore
threaded member
screw threaded
locking pin
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.)
Withdrawn
Application number
EP07703460A
Other languages
German (de)
English (en)
Inventor
Colin John Rouse
Phillip William Farr
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.)
FAROUSE DESIGN Ltd
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP2029901A1 publication Critical patent/EP2029901A1/fr
Withdrawn legal-status Critical Current

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
    • F16B39/023—Locking of screws, bolts or nuts in which the locking takes place after screwing down by driving a conic or wedge-shaped expander through the threaded element
    • 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
    • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
    • F16B13/12—Separate metal or non-separate or non-metal dowel sleeves fastened by inserting the screw, nail or the like
    • F16B13/126—Separate metal or non-separate or non-metal dowel sleeves fastened by inserting the screw, nail or the like fastened by inserting an unthreaded element, e.g. pin or nail
    • 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
    • F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
    • F16B19/04—Rivets; Spigots or the like fastened by riveting
    • F16B19/08—Hollow rivets; Multi-part rivets
    • F16B19/10—Hollow rivets; Multi-part rivets fastened by expanding mechanically
    • F16B19/1027—Multi-part rivets
    • F16B19/1036—Blind rivets
    • F16B19/1081—Blind rivets fastened by a drive-pin
    • 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
    • F16B41/00—Measures against loss of bolts, nuts, or pins; Measures against unauthorised operation of bolts, nuts or pins
    • F16B41/005—Measures against unauthorised operation of bolts, nuts or pins

Definitions

  • the present invention relates to attachment devices, such as screws which include a security device to inhibit or prevent removal of the attachment device when it is in place performing an attachment function.
  • This invention therefore relates to a screw fixing, which is particularly suitable for use in preventing vandalism and theft and in particular the theft of vehicle registration plates. Other uses are also envisaged, particularly those where secure and 'tamper proof screw fixing is required.
  • attachments In addition to the need for protection against vandalism and theft there are situations in which attachments must be protected from removal in the interests of safety. For example the safety of electrical fixtures and devices, gas fixtures, provision for the security of toxic or corrosive substances in both domestic and industrial environments all rely on attachments and there remains a need to increase the security and reliability of the attachment. Additionally there is a need for increased safety for childrens toys such as axle fixings for cleats for go carts.
  • Attachment devices have been proposed which contain security devices to render them difficult to undo. For example pop-rivets can be provided which are demountable only by drilling. These however are difficult to apply.
  • European Patent Application 0463751 A relates to another form of security device by providing locking bolt assemblies which comprise a locking bolt assembly which prevents the release of loose parts in the event of bolt failure by use of a bolt having a head and a threaded main body with a central bore through the head and the main body portion in which the central bore has a necked down portion adjacent the end of the main body remote from the head. A plurality of slots are provided along the end of the main body portion in communication with the central bore which form bolt fingers around the necked down portion.
  • a plunger is slidably received in the central bore and exerts radial pressure at the necked down portion to expand the bolt fingers outwardly and lock the bolt in its installed position without changing the preload of the installed bolt.
  • EP 0463751 A also makes the following references to other locking bolt assemblies
  • Patent Specification US-A-3 042 094 which discloses an expander received inside a bolt to cause locking of the threads with the nut.
  • Patent Specification US-A-2 438 533 which discloses the use of a pin to spread two arms of a stud apart to lock the stud in place.
  • Patent Specification US-A-1 409 817 which discloses the use of a locking key that causes a slotted end of the bolt to expand and lock with a nut. Separated portions of the key are bendable to prevent separation of the key and bolt while the key head is received in a recess in the bolt head.
  • the present invention therefore provides an attachment device which provides an additional degree of security against dismantling of the attachment.
  • an attachment system comprising
  • a hollow screw threaded member having a head and an end opposite the head and provided with a bore extending therethrough wherein the walls of said bore adjacent said end are flexible and the cross section of the bore at the head is greater than the cross section at the end
  • a locking pin having an end that is insertable into the bore at the head and has a cross section greater than the cross section of the bore at the end of the bore in its unflexed state and the flexibility of the walls of the bore at the end of the screw threaded member is such that it allows the end of the locking pin to be forced through the end of the bore.
  • the initial attachment will first be formed by means of the screw threaded member attaching an article to another article, for example a vehicle registration plate to a vehicle, a protective plate to a meter, a security plate to an electrical device and the like, perhaps by mating with a nut.
  • the attachment will then be secured by driving the locking pin through the bore of the screw threaded member so that the driving force expands the flexible end of the bore and the end of the locking device is forced beyond the end of the bore.
  • the system of the present invention has the benefit that the locking pin is not fixed to the hollow screw threaded member and in the event of an attempt to remove the locking member by drilling the member will rotate with the drill thus inhibiting removal which can increase the time to effect vandalism or theft and increase the likelihood of detection and prevention.
  • the flexibility in the end of the screw threaded member can be provided in any suitable manner, we prefer however that it be provided by the provision of slots around the perimeter of the end of the bore of the screw threaded member.
  • the locking pin is provided with an element of increased cross section at the end that passes through the bore of the screw threaded member.
  • the element of increased cross section is preferably shaped so that after it has passed through the flexible end of the screw threaded bore it provides a protrusion which bears against the extremity of the screw threaded bore preventing the protrusion from re-entering the bore in a backwards direction.
  • a bulbous protrusion provided at the end of the pin may be provided with a flat rim at the surface of the protrusion adjacent to the end of the screw threaded bore after the protrusion has passed therethrough is particularly suitable.
  • the locking pin is designed so that the means whereby the screw threaded member is operated to provide the initial attachment is hidden by the insertion of the locking pin.
  • This provides an additional security element in that it inhibits access to enable removal of the screw threaded member.
  • the head of the screw threaded member maybe provided with a recess designed for the receipt of a key such as an Allen key to enable rotation of the screw threaded member to perform the attachment.
  • the locking pin can then be provided with a head that conforms to the shape and/or size of the recess and lies within the recess when in the locking position thus preventing access to the attachment mechanism of the screw threaded member.
  • the locking action due to the interaction of the remote end of the screw threaded member and the locking pin will prevent access to the attachment mechanism of the screw threaded member thus preventing removal of the locking pin which provides additional security.
  • the attachment system of the present invention has wide ranging applications. It may be used in domestic and industrial situations and can be used to provide additional security and/or safety in a range of situations from light to heavy industry, service industries, transport, advertising any many others.
  • the size and shape of the screw threaded member and the locking pin and the materials from which they are made will depend upon the use to which the system is to be put.
  • the applications can range from small screws to secure registration vehicle number plates to vehicles to locking bolts in heavy industry. Accordingly the degree of flexibility required in the screw threaded member and the manner in which it is provided will vary from application to application.
  • the head of the locking pin may be coloured in order to indicate that the security systems are in place which may be particularly useful in applications where inspection is required such as with franking machines, meter protection and other industrial environments.
  • the present invention relates to a theft resistant screw assembly suitable for use in securing registration plates to motor vehicles to prevent the easy removal and theft of vehicle registration plates.
  • the fixing screw is preferably made from plastic, and the locking pin is preferably made from metal, but this could be reversed.
  • the invention suitably consists of two elements, the fixing screw (part 1) and the locking pin (part 2).
  • the fixing screw is suitably used to secure the plate to the vehicle, and the locking pin is then inserted into it to prevent its removal so that the theft resistant screw assembly consists of a screwed method of attaching the registration plate to the vehicle, and a locking pin, which prevents access to the tightening/loosening arrangement of the screw.
  • the theft resistant screw assembly contains interference features, which prevent the removal of the screw with the locking pin in position.
  • the theft resistant screw assembly contains interference features, which prevent the removal of the locking pin after insertion into the screw.
  • the theft resistant screw assembly consists of two or more elements.
  • the screw assembly of the present invention comprises
  • a screw body defining an external thread, said screw body having a central through hole provided thereto, wherein the screw body defines a screw thread provided with screw tightening means at a first end thereof and one or more slots at a second end thereof; and b) a locking pin arranged for receipt by said central through hole, wherein said pin defines a pin head at a head end thereof and a bulbous portion distal from said head end,
  • said slots enable initial flexing of the second end of the screw body in response to receipt of the bulbous portion and subsequent deflexing thereof as the bulbous portion passes beyond the second end of the screw body to a pin lock position, and wherein in said pin lock position the pin head obscures the screw tightening means such as to prevent access thereto.
  • the screw tightening means is provided at a recessed position within said screw body.
  • said recessed position defines part of said central through hole.
  • the cross section and flexibility of the end of the screw threaded member are such that the extremity of the end passes through the nut while a section close to the end will engage with the nut.
  • the locking pin is designed so that it will pass through the bore of the screw threaded member and by virtue of the flexibility of the end of the screw threaded member will increase the external diameter of the end of the screw threaded member beyond the nut so that it cannot be removed by passing back through the nut.
  • Figure 1 shows the external form of the fixing screw.
  • Figure 2 shows the method of tightening the fixing screw.
  • Figure 3 shows a section of the fixing screw.
  • Figure 4 shows the external form of the locking pin.
  • Figure 5 shows a section of the fixing screw and locking pin assembled.
  • the fixing screw has an external thread to achieve an attachment such as connecting a registration plate to the vehicle via a nut or similar (1a).
  • the fixing screw has an internal method of tightening e.g. slot, hexagon or other form of screw tightening means perhaps by use of an Allen key, which is suitably recessed (1b).
  • the fixing screw has a central tapered through hole (1c) and one or more slots (1d) which allow the screw to flex.
  • the central tapered through hole and the external form of the locking pin (2a) have a similar profile.
  • the locking features (1e) on the fixing screw are of sufficient size to allow it to be inserted into the nut (or similar) when the screw flexes inwardly to pass through the nut, but are also of sufficient size to prevent the nut being removed when the locking pin is inserted, which prevents flexing.
  • the area (1f) is of sufficient diameter and length that the nut (or similar) is free to rotate on it.
  • the locking pin has a feature (2b), which is of sufficient size to allow the pin to be inserted into the fixing screw, but which is also of sufficient size to prevent removal of the pin after insertion.
  • the head of the locking pin (2c) is of sufficient size to allow insertion into the locking screw, but prevent access to the tightening arrangement.
  • the item to be attached is first attached to the vehicle using the fixing screw (1) and tightened.
  • the locking pin (2) is inserted into the through hole in the fixing screw, which locks into position preventing access to the method of removing said screw. If the fixing screw is loosened without removing the locking pin, the locking features (1e) prevent the nut (or similar) being removed from the locking screw.
  • attachment systems of the present invention have an extremely wide range of uses from lightweight screw attachment systems to heavy duty industrial attachment systems.
  • the invention has use in all the outlets previously described although the outlets envisaged are not limiting on the potential uses of the present invention.
  • the invention is also concerned with the manner in which the attachment systems are provided.
  • the screw threaded member and the locking pin may be provided as a kit, they may be provided as a multi kit package of several attachment systems, alternatively they may be provided as part of a multi component package including the article which is to be attached.
  • the appropriate number of attachment systems of the present invention may be supplied together with the article to be attached such as a vehicle registration plate.
  • the invention therefore includes any such kits and any such means of supplying the attachment system of this invention.

Landscapes

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

Abstract

La présente invention concerne un système de fixation qui comprend un système d'ensemble vis possédant une sécurité et une sûreté améliorée. Ce système est constitué de deux éléments, pièce (1), la vis de fixation et pièce (2), l'axe de verrouillage. En utilisation, lorsque la fixation a été établie au moyen de la vis de fixation et serrée, l'axe de verrouillage est introduit dans le trou dans la vis de fixation, de façon à verrouiller dans une position empêchant le retrait de la vis. Dans un mode de réalisation préféré l'axe de verrouillage empêche aussi d'accéder au procédé de retrait de cette vis. Par ailleurs, des éléments de verrouillage sur la vis de fixation sont actionnés par l'axe de verrouillage afin d'empêcher le retrait de l'écrou ou d'un élément similaire. Ce système de fixation possède une grande plage d'utilisations allant des utilisations domestiques et industrielles légères à des utilisations industrielles lourdes et il convient particulièrement pour la prévention contre le vol et le vandalisme telle que pour la sécurité des plaques d'immatriculation de véhicule.
EP07703460A 2006-02-14 2007-02-14 Système de fixation Withdrawn EP2029901A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB0602935.9A GB0602935D0 (en) 2006-02-14 2006-02-14 Screw Fixing To Prevent The Theft Of Vehicle Registration Plates
GBGB0613909.1A GB0613909D0 (en) 2006-02-14 2006-06-13 Screw fixing to prevent the theft of vehicle registration plates
PCT/EP2007/001273 WO2007093397A1 (fr) 2006-02-14 2007-02-14 Système de fixation

Publications (1)

Publication Number Publication Date
EP2029901A1 true EP2029901A1 (fr) 2009-03-04

Family

ID=36120035

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07703460A Withdrawn EP2029901A1 (fr) 2006-02-14 2007-02-14 Système de fixation

Country Status (3)

Country Link
EP (1) EP2029901A1 (fr)
GB (3) GB0602935D0 (fr)
WO (1) WO2007093397A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2474011B (en) * 2009-09-14 2013-06-19 Farouse Design Ltd Attachment system
GB2481011A (en) * 2010-06-07 2011-12-14 Ronald Dennis Carpenter Fastening System
GB2507781B (en) * 2012-11-09 2016-05-25 Farouse Design Ltd Improved security attachment system
CN103062201A (zh) * 2013-01-06 2013-04-24 沈阳化工大学 一种由耐腐蚀材料复合制备的螺栓
CN104948879B (zh) * 2015-06-08 2017-10-20 泰州市润扬电气有限公司 室外电力设备的防盗方法
CN104962822A (zh) * 2015-06-08 2015-10-07 河南行知专利服务有限公司 一种电力设备预埋防盗螺栓装置及制备方法
CN105221548B (zh) * 2015-06-08 2018-03-27 盐城哈力动力传动及智能装备产业研究院有限公司 一种电力设备预埋防盗螺栓远程报警装置及制备方法
CN104867261B (zh) * 2015-06-08 2018-08-14 国网河南省电力公司经济技术研究院 室外电力设备远程防盗报警方法及预埋防盗螺栓装置
CN106013983B (zh) * 2016-06-30 2018-05-11 天津成立航空技术有限公司 一种迷宫式机械密码锁螺栓组件及其锁紧方法
KR200492468Y1 (ko) * 2019-03-20 2020-10-20 홍석환 고정력이 향상된 고정 장치
CN112278136B (zh) * 2020-11-17 2021-12-10 上海凤凰自行车江苏有限公司 一种自行车车架用减震装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US322657A (en) * 1885-07-21 Screw-bolt lock
GB137696A (en) * 1919-04-01 1920-01-22 Thomas Murray Barrowman An improvement in coach and wood screws
US2463859A (en) * 1945-07-25 1949-03-08 Boots Aircraft Nut Corp Threaded locking device
US2871749A (en) * 1955-04-11 1959-02-03 Kalb Aaron Blind fastener having locking stem retained in head by cammed lock washer
DE7627372U1 (de) * 1976-08-24 1977-02-17 Krueger, Willi, 4732 Vorhelm Sicherheitsschraube
US4411570A (en) 1981-04-06 1983-10-25 Ilija Juric Tamper-proof fastener
FR2595123A1 (fr) 1986-02-28 1987-09-04 Seigneur Roland Chevilles a expansion sans vis et inviolable
US4976577A (en) * 1990-06-25 1990-12-11 The Babcock & Wilcox Company Locking bolt assembly
TW397279U (en) * 1998-05-08 2000-07-01 Hon Hai Prec Ind Co Ltd Locking device for a cable connector

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007093397A1 *

Also Published As

Publication number Publication date
GB0602935D0 (en) 2006-03-22
WO2007093397A1 (fr) 2007-08-23
GB2435082A (en) 2007-08-15
GB0613909D0 (en) 2006-08-23
GB2435082B (en) 2009-06-17
GB2435082B8 (en) 2009-07-01
GB2435082A8 (en) 2007-08-21
GB0702834D0 (en) 2007-03-28

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