EP2145736A1 - Adaptateur pour clef - Google Patents

Adaptateur pour clef Download PDF

Info

Publication number
EP2145736A1
EP2145736A1 EP08275035A EP08275035A EP2145736A1 EP 2145736 A1 EP2145736 A1 EP 2145736A1 EP 08275035 A EP08275035 A EP 08275035A EP 08275035 A EP08275035 A EP 08275035A EP 2145736 A1 EP2145736 A1 EP 2145736A1
Authority
EP
European Patent Office
Prior art keywords
spanner
adaptor
socket
engagement portion
engagement
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.)
Ceased
Application number
EP08275035A
Other languages
German (de)
English (en)
Inventor
designation of the inventor has not yet been filed The
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.)
BAE Systems PLC
Original Assignee
BAE Systems PLC
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 BAE Systems PLC filed Critical BAE Systems PLC
Priority to EP08275035A priority Critical patent/EP2145736A1/fr
Priority to PCT/GB2009/050730 priority patent/WO2010007402A1/fr
Publication of EP2145736A1 publication Critical patent/EP2145736A1/fr
Ceased legal-status Critical Current

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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
    • B25B15/00—Screwdrivers
    • B25B15/001—Screwdrivers characterised by material or shape of the tool bit
    • 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
    • B25B13/00—Spanners; Wrenches
    • B25B13/48—Spanners; Wrenches for special purposes
    • B25B13/488—Spanners; Wrenches for special purposes for connections where two parts must be turned in opposite directions by one tool
    • 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
    • B25B23/0007—Connections or joints between tool parts
    • B25B23/0035—Connection means between socket or screwdriver bit and tool

Definitions

  • the present invention relates to spanners and in particular to an adaptor which allows a spanner to be used as a socket wrench and which allows an elongate threaded fastener such as a bolt to be constrained whilst a nut engaged in a socket of such a socket wrench is driven on the fastener.
  • spanners include open-ended, ring or box-end, and combination spanners.
  • Such spanners have an elongate handle and an engagement formation arranged at one or both ends of the handle suitable for engaging with a nut body or bolt head, for example.
  • An open-ended spanner comprises an open engagement formation having at least two flat and parallel faces to engage with corresponding flat surfaces on a nut body or bolt head.
  • a ring spanner comprises a closed engagement formation defining a ring shaped internally to engage with a nut body or bolt head and for example having annularly arrayed inwardly protruding teeth.
  • Ratchet ring spanners typically include a toothed hollow wheel at one or both ends of the spanner, the teeth of which engage with a nut body or bolt head.
  • the hollow wheel is rotatably mounted in the box end of the ring spanner.
  • a pawl is mounted in a web area of the spanner handle and is biased by a spring to engage with the ratchet wheel such that the wheel is free to rotate when the handle is rotated in a direction and is driven when the handle is rotated in a reverse direction.
  • the ratchet wheel of a ratchet ring spanner is sized and shaped according to a nut or bolt size.
  • spanners having differently sized wheels are available to be selected according to the size of nut or bolt. It is known for the ratchets on such spanners to be reversible to provide a positive drive when tightening or loosing a nut or bolt, i.e. when driving the nut or bolt with the spanner in a clockwise or counterclockwise direction.
  • spanners A disadvantage of spanners is that a plurality of spanners having differently sized engagement formations must be provided depending on the size of nut or bolt to be tightened or loosened.
  • Socket adaptors which allow a ratchet ring spanner to be used as a socket wrench.
  • Such an adaptor comprises an elongate body having a spanner engagement portion which is adapted to engage with the ratchet wheel of a ratchet ring spanner, and a socket engagement portion adapted to engage with a socket.
  • a socket generally comprises a body such as a cylindrical body having a receiving hole at one end adapted to receive the socket engagement portion of the adaptor and a fastener engagement portion at the other end.
  • the fastener engagement portion is adapted and sized to engage with a correspondingly sized nut body or bolt head.
  • a socket set generally comprises a plurality of such sockets having an identical receiving hole to selectively receive the socket engagement portion of the adaptor and different fastener engagement portions adapted and sized to engage with a correspondingly sized nut body or bolt head.
  • a suitable socket is selected from the set depending on the size of nut body or bolt head to be driven.
  • the socket is connected to the spanner via the adaptor to allow the spanner to be conveniently used as a socket wrench.
  • a means for reducing the number of different spanners required for a particular job is therefore provided.
  • a problem experienced by a user when tightening or loosening a nut on a threaded shaft of a fastener such as a bolt can arise where rotation of the fastener can not be easily constrained.
  • This problem can result when access to engage a bolt head with a suitable tool is not possible or is substantially limited or where the shape of a bolt head prevents adequate engagement of a suitable tool therewith or where there is no head.
  • the fastener When driving a nut on a threaded fastener shaft which cannot practically be constrained, the fastener will tend to spin with the nut being driven thereon, making it more difficult to assemble or disassemble. This problem is made worse where the nut comprises nylon lining or similar which tends to resist the nut being driven on the fastener shaft and tends to make finger tightening to close the nut and fastener arrangement more difficult.
  • Modified fasteners are available which allow rotation of the bolt to be constrained by other means than restraining a bolt head when a nut is being driven thereon.
  • such fasteners comprise a threaded shaft. They may have a bolt head at on end. They are modified to have a coupling formation such as a recess at an end to which a nut would be offered, usually distal to a bolt head end if provided.
  • the coupling formation is adapted to engage with and for example the recess is adapted to receive a complementarily shaped end of a constraining tool which is used to constrain rotation of the fastener whilst a nut is being driven thereon.
  • Such a fastener includes an ASNA bolt, as used in the aerospace industry, which comprises a hexagonal shaped recess to receive an end of a hex key. It is known to place a nut on the distal end of such a fastener, engage a suitable spanner on the nut, insert a suitable constraining tool, such as a hex key, into the distal end of the fastener and tighten the nut on to the fastener using the spanner whilst constraining rotation of the fastener with the constraining tool engaged therewith.
  • ASNA bolt as used in the aerospace industry
  • the socket adaptor obstructs a constraining tool from engaging with the distal end of a suitably adapted fastener.
  • a first aspect of the present invention provides an adaptor for a spanner, comprising:
  • a suitable constraining tool comprises an end adapted to engage with an end of the threaded shaft of a fastener.
  • the end of the tool and the end of the threaded shaft of a fastener comprise complementarily shaped engagement formations, for example formed as complementary projections and recesses.
  • the constraining tool may comprise a projection which is complementarily shaped with a recess in the end of a fastener shaft.
  • the end of the constraining tool may comprise a recess complementarily shaped with a projection on the end of a fastener shaft.
  • the constraining tool may have a polygonal cross section to engage with a polygonal recess in the distal end of the bolt.
  • the constraining tool may be square or hexagonal.
  • the constraining tool may comprise a slot head, cross head, spanner head or triple square, for example.
  • the constraining tool may comprise a handle or lever portion.
  • the constraining tool may be a hex key to engage with a corresponding recess in the end of the fastener.
  • the bore in the body of the adaptor is adapted to allow the end of a constraining tool to be inserted and pass through and extend beyond the socket engagement portion of the adaptor.
  • Available sockets are usually hollow having a through passage from the receiving hole to the fastener engagement portion of the socket.
  • the constraining tool may itself be rotated within the adaptor and socket engaged therewith and thus act on the fastener.
  • the constraining tool may conveniently be used to drive a fastener whilst a nut is constrained in a socket engaged with the adaptor. This would be particularly desirable where the space required to move the handle of a ratchet ring spanner, for example, through an angle to move the ratchet on at least one tooth may not be available. Even if the space was available, tightening or loosening a nut through very small angles at a time, is extremely time consuming and often frustrating.
  • the spanner and socket engaged therewith can be held in position whilst the constraining tool, passing through the bore of the adaptor and engaged with the end of a fastener, is rotated to drive the fastener to tighten or loosen a nut and fastener arrangement.
  • the bore is sized larger than a constraining tool with which it is designed to be used to allow the adaptor, and a socket engaged therewith, to rotate around the constraining tool inserted therethrough.
  • the bore conveniently passes longitudinally through an elongate body of the adaptor, for example generally along a mid line.
  • the bore is an axial bore.
  • the bore is conveniently of circular cross-section.
  • the spanner engagement portion is adapted to releasably engage with a conventional spanner, such as an open-ended, ring or combination spanner, for example.
  • a conventional spanner such as an open-ended, ring or combination spanner
  • the spanner engagement portion is elongate and is adapted to be received by and in particular within an engagement formation of a spanner.
  • the spanner engagement portion is at least partly complementarily shaped with an engagement formation of a spanner with which it is to be used.
  • the spanner engagement portion comprises one or more external faces complementarily shaped with and so as to bear against in use internal faces of an engagement formation of a spanner.
  • the spanner engagement portion may comprise at least two longitudinal and parallel faces which engage with corresponding faces of an engagement formation of a spanner.
  • the spanner engagement portion may comprise two or more flat surfaces provided thereon complementary in use to flat internal surfaces of an engagement formation of a spanner.
  • the spanner engagement portion may be polygonal in cross section defining three or more longitudinal faces.
  • at least two of the faces serve as parallel faces for the parallel faces of a spanner engagement formation to engage with.
  • the spanner engagement portion may be substantially square or hexagonal for engagement with a similarly shaped spanner engagement formation.
  • the spanner engagement portion may define a plurality of longitudinal teeth formations arrayed about a central elongate body.
  • teeth formations are disposed in an evenly spaced array.
  • an array comprises a plurality of identically shaped teeth formations.
  • a tooth formation is tapered from a wider base at the central body to a narrower distal edge.
  • a tooth formation is trapezoidal.
  • the spanner engagement portion is complementarily shaped with the ratchet wheel of a ratchet ring spanner.
  • the spanner engagement portion comprises a body having an axis of rotation and define a profile, e.g. a triple square, to correspond with the teeth of the box end of a ring spanner or ratchet wheel of a ratchet ring spanner.
  • a profile e.g. a triple square
  • the adaptor may further comprise locating means to ensure the adaptor is securely and stably positioned in use within an engagement formation of a spanner.
  • the locating means may comprise a shoulder disposed on the spanner engagement portion of the adaptor.
  • the shoulder outwardly extends from the spanner engagement portion thereby to enable the spanner engagement portion to be located and held within an engagement formation of a spanner.
  • the shoulder is annular to define a disc-like member.
  • the spanner engagement portion may comprise a resiliently deformable retaining means to tend to retain the adaptor in an engagement formation of a spanner.
  • the retaining means may comprise a recess in the spanner engagement portion adapted to receive a resilient member.
  • the resilient member may be a rubber material, e.g. an O-ring, a spring-loaded captured ball or the like, which bears upon a surface of the engagement formation of a spanner to retain the adaptor therewithin.
  • the socket engagement portion is adapted to be releasably engageable with a complementary receiving means such as a receiving hole of a socket.
  • a complementary receiving means such as a receiving hole of a socket.
  • the socket engaging portion is elongate and complementarily shaped with the receiving hole of a socket.
  • the socket engagement portion is an elongate prism having polygonal and for example substantially square cross section.
  • the receiving holes of available sockets are usually square and are, generally, two standard sizes.
  • the socket engagement portion may be either of these sizes or be shaped according to an alternative formation of receiving hole of a socket as desired.
  • the socket engagement portion may comprise resilient retaining means such as a snap-fit arrangement to securely and releasably engage a socket to the adaptor.
  • the socket engagement portion may comprise a recess in a surface thereof adapted to receive a resilient member.
  • the resilient member may be a resilient material, a spring-loaded captured ball or the like, which bears upon an inner surface of a socket recess to retain the adaptor therewithin.
  • similar retaining means may be provided in association with a receiving means of a socket.
  • the adaptor is a metal material.
  • the adaptor may be steel or an alloy steel.
  • the adaptor is chrome vanadium steel.
  • the adaptor may be chrome plated.
  • the adaptor described above comprises part of a spanner and adaptor set comprising:
  • the adaptor described above comprises part of a spanner, adaptor and socket set comprising:
  • the present invention further comprises a constraining tool in combination with and adapted for use with the foregoing.
  • the spanner is a ratchet ring spanner comprising a hollow ratchet wheel.
  • a further aspect of the present invention provides a kit of parts comprising:
  • the kit of parts may further comprise a constraining tool.
  • an adaptor 10 of an embodiment of the invention particularly suited to use with a ratchet ring spanner comprising an elongate body having a spanner engagement portion 12 and a socket engagement portion 14.
  • the spanner engagement portion 12 and socket engagement portion 14 are elongate and together make up the body. They may be similar in length, each defining approximately half of the body.
  • the spanner engagement portion 12 comprises longitudinal teeth 32 arrayed around and extending along the length of a generally cylindrical central body.
  • the teeth have a generally trapezoidal cross section to define a profile corresponding with the longitudinal teeth 34 around the inside surface of a hollow ratchet wheel 20 of a ratchet ring spanner 22.
  • the elongate socket engagement portion 14 has a substantially square cross section complementarily shaped with, and thereby to engage in, the adaptor receiving portion of a socket 24.
  • the edges 36 of the square socket engagement portion 14 may be chamfered to aid location and engagement with a socket 24.
  • the adaptor 10 has a longitudinal bore 16 centrally disposed in and extending through the adaptor 10 from the spanner engagement portion 12 to the socket engagement portion 14.
  • the bore 16 is sized to allow an end 28 of a hex key 18 to pass through the adaptor 10 and through passage of a socket 24 and engage in a corresponding hexagonal-shaped recess in the end of the shaft of a suitably adapted fastener (not shown), such as an ASNA bolt as typically used in the aircraft industry, on to which a nut is being driven.
  • the bore 16 is larger in diameter than the hex key 18 to allow the adaptor 10, and socket 24 engaged thereto (see Figure 6 ), to rotate whilst the hex key 18 is held by a user to constrain rotation of the fastener shaft whilst a nut is being driven thereon. This is particularly advantageous where access to a fastener head is not possible or is substantially limited, where the fastener has a head to which a suitable tool cannot adequately engage or where the fastener has no head.
  • the adaptor of figures 1 and 2 is particularly adapted for use with a ratchet ring spanner 22. This is illustrated in Figures 4 to 7 .
  • the spanner engagement portion 12 is slideably received by the ratchet wheel 20 to conveniently allow a ratchet ring spanner 22 to be used as a ratchet socket wrench.
  • a set of sockets will be provided, each having an identical recess shaped to receivingly engage with the square socket engagement portion 14 but with a differently shaped/sized socket recesses to receive and drive differently shaped fasteners. This advantageously reduces the number of tools required for an application and the number of tools stored and/or transported in a tool box.
  • the spanner engagement portion 12 is slideably engaged in the ratchet wheel 20 of a ratchet spanner 22, in the direction of arrow 30 as shown in Figure 4 .
  • a socket 24 is generally hollow having a through passage from the adaptor receiving portion, generally a square hole adapted to receive a conventional socket wrench, to a fastener engagement portion 26.
  • a suitable socket 24 is engaged on the socket engagement portion 14. Such a socket is shown in position in Figures 6 and 7 .
  • the adaptor 10 allows a conventional ratchet ring spanner 22 to be conveniently operable as a ratchet socket wrench.
  • a nut is placed on the distal end of the shaft of a fastener, e.g. an ASNA bolt, and the fastener engagement portion 26 of a socket 24 is offered to the nut to be engaged therein.
  • the end 28 of a suitably sized hex key 18 is inserted into the hexagonal recess in the end of the fastener shaft.
  • the spanner 22 can be rotated in a user's hand to positively drive the nut on the fastener shaft whilst the hex key 18 is held in the other hand to prevent rotation of the fastener whilst the nut is being driven thereon.
  • the hex key 18 may conveniently be used to drive the fastener shaft whilst the nut is constrained in the socket 24.
  • a hex key 18 may alternatively be used to drive the shaft of a fastener, such as a bolt, whilst the nut is held in place by the spanner 22. This may be particularly desirable where a nut and bolt arrangement is to be opened or closed but where space is limited and movement of the spanner handle 22 is substantially restricted.
  • the adaptor 10 is small relative to the length of a socket 24 and is adapted to allow a socket 24 to be driven from a point close to the throat of a spanner 22. This advantageously minimises the spacing between a plane of rotation of the spanner 22 and a plane of rotation of a nut, reducing any torque offset therebetween, as described above, which would occur when using an extension piece in a conventional socket wrench, for example.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
EP08275035A 2008-07-18 2008-07-18 Adaptateur pour clef Ceased EP2145736A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP08275035A EP2145736A1 (fr) 2008-07-18 2008-07-18 Adaptateur pour clef
PCT/GB2009/050730 WO2010007402A1 (fr) 2008-07-18 2009-06-25 Adaptateur pour clé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08275035A EP2145736A1 (fr) 2008-07-18 2008-07-18 Adaptateur pour clef

Publications (1)

Publication Number Publication Date
EP2145736A1 true EP2145736A1 (fr) 2010-01-20

Family

ID=39688970

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08275035A Ceased EP2145736A1 (fr) 2008-07-18 2008-07-18 Adaptateur pour clef

Country Status (1)

Country Link
EP (1) EP2145736A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3246129A1 (fr) * 2016-05-20 2017-11-22 Ulrich Schächinger Poignée de changement de crochet à débosseler

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985002574A1 (fr) * 1983-12-13 1985-06-20 John Brent Moetteli Clef a cliquet amelioree
US6019019A (en) * 1998-04-09 2000-02-01 Specialty Auto Parts Usa, Inc. Clearance extension for wrenches
WO2000015392A1 (fr) * 1998-09-12 2000-03-23 Travis Mcclure Outil pour enlever une bague de blocage
US20030097911A1 (en) * 2001-11-28 2003-05-29 Bobby Hu Retainer ring for securely retaining a first object to a second object
US20030136230A1 (en) * 2002-01-18 2003-07-24 Chen Hsin Nien Ratchet wrench having socket adapter securing device
DE20316821U1 (de) * 2003-10-31 2004-01-15 Hsien, Chih-Ching, Feng Yuan Steckschlüsseleinsatz
US20040211299A1 (en) * 2003-04-22 2004-10-28 Terence Chen Joint for connecting wrench with socket
US20040226413A1 (en) * 2003-05-14 2004-11-18 Terence Chen Joint for connecting wrench with socket
US20050098001A1 (en) * 2003-11-07 2005-05-12 Walker Russell E. Nut driver improvement

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985002574A1 (fr) * 1983-12-13 1985-06-20 John Brent Moetteli Clef a cliquet amelioree
US6019019A (en) * 1998-04-09 2000-02-01 Specialty Auto Parts Usa, Inc. Clearance extension for wrenches
WO2000015392A1 (fr) * 1998-09-12 2000-03-23 Travis Mcclure Outil pour enlever une bague de blocage
US20030097911A1 (en) * 2001-11-28 2003-05-29 Bobby Hu Retainer ring for securely retaining a first object to a second object
US20030136230A1 (en) * 2002-01-18 2003-07-24 Chen Hsin Nien Ratchet wrench having socket adapter securing device
US20040211299A1 (en) * 2003-04-22 2004-10-28 Terence Chen Joint for connecting wrench with socket
US20040226413A1 (en) * 2003-05-14 2004-11-18 Terence Chen Joint for connecting wrench with socket
DE20316821U1 (de) * 2003-10-31 2004-01-15 Hsien, Chih-Ching, Feng Yuan Steckschlüsseleinsatz
US20050098001A1 (en) * 2003-11-07 2005-05-12 Walker Russell E. Nut driver improvement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3246129A1 (fr) * 2016-05-20 2017-11-22 Ulrich Schächinger Poignée de changement de crochet à débosseler

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