WO2008040122A1 - Système de fixation à cliquet - Google Patents

Système de fixation à cliquet Download PDF

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Publication number
WO2008040122A1
WO2008040122A1 PCT/CA2007/001758 CA2007001758W WO2008040122A1 WO 2008040122 A1 WO2008040122 A1 WO 2008040122A1 CA 2007001758 W CA2007001758 W CA 2007001758W WO 2008040122 A1 WO2008040122 A1 WO 2008040122A1
Authority
WO
WIPO (PCT)
Prior art keywords
fastener
threaded
bore
cavity
threaded portion
Prior art date
Application number
PCT/CA2007/001758
Other languages
English (en)
Inventor
Grant Perry Brown
Original Assignee
Grant Perry Brown
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 Grant Perry Brown filed Critical Grant Perry Brown
Publication of WO2008040122A1 publication Critical patent/WO2008040122A1/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
    • F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
    • F16B23/0007—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
    • F16B23/0038—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool substantially prismatic with up to six edges, e.g. triangular, square, pentagonal, Allen-type cross-sections

Definitions

  • This invention ⁇ elates to the field of threaded fasteners and in particular to a ratchet fit fastener which provides a female threaded fastener for replacing the function of a threaded nut wherein the fastener has a female socket oppositely disposed from, and axially aligned with the threaded female fastener cavity.
  • Pavlecka teaches a self locking nut and in particular an elastic stop nut having a polygonal socket so that the stop nut may be screwed onto and off of the screw member with which it cooperates. It is taught that the cross sectional sides of the polygonal socket allows a corresponding polygonal portion of a mandrel to be slidable into the socket. It is taught that the shoulders of the polygonal socket are engageable by a socket wrench.
  • the female fastener according to the present invention is locked onto the drive axle of the socket wrench, the female fastener may be guided in its entry to the male fastener from awkward angles and through very tight clearances where a user otherwise could not reach so as to accurately position and place the fastener for threaded cooperation between the male and female fasteners without the likelihood, as in the existing prior art, that the female fastener for example would be dropped and thus have to be retrieved.
  • fastener be securely held on the free or distal end of a tool which securely holds the fastener in a known orientation for remote manipulation by the mechanic.
  • a tool such as in the present invention, allows the mechanic to, firstly, place the fastener threads in the proper orientation for engaging the corresponding threads on the corresponding opposed facing fastener, for example the free end of a stud, and, secondly, for then rotating the fastener on the tool so as to threadably engage the pair of corresponding fasteners one with the other.
  • a positive locking, secure yet releasable drive mount existed already in common collections of tools; namely, a conventional socket wrench handle having a square-headed stub drive shaft protruding from the socket wrench head.
  • the square-headed stub drive shaft protruding from the head of the socket wrench has a spring-loaded ball mounted in at least one of the sides of the shaft.
  • Each spring-loaded ball engages a corresponding detent in the female socket receiving cavity of a typical socket wrench attachment such as one of a series of different sizes of demountable sockets.
  • Such conventional sockets have on one end a square socket receiving opening for receiving the socket wrench drive shaft whether the stub shaft or the end of an extension, and in their other end, a polygonal socket for receiving therein a nut so that rotation of the drive shaft by the socket wrench turns the nut on to the threaded end of the bolt or like male fastener.
  • a polygonal socket for receiving therein a nut so that rotation of the drive shaft by the socket wrench turns the nut on to the threaded end of the bolt or like male fastener.
  • the present invention may be characterized in one aspect as a ratchet mounting close-fit fastener including a rigid fastener body having opposite first and second ends and a substantially smoothly curved outer surface extending from the first end to the second end.
  • the first end has a socket drive receiving cavity formed therein for receiving a male socket drive shaft into snug mating engagement along a longitudinal axis of the body.
  • Releasable locking means in the cavity cooperate between the cavity and the drive shaft so as to releasably lock the fastener body onto the drive shaft.
  • the second end is formed to include a threaded portion.
  • the threaded portion is symmetric about the longitudinal axis for threaded mating engagement of the threaded portion with a corresponding matingly-threaded second fastener.
  • the cavity and the threaded portion are oppositely disposed for mounting of the drive shaft to the cavity and mounting of the second fastener to the threaded portion from opposed facing opposite directions.
  • the outer surface does not include shoulders formed along the outer surface so as to be parallel with the longitudinal axis of the fastener body.
  • the threaded portion is a female threaded bore the cavity and the bore may be separated by a sealed barrier such as a rigid membrane between the cavity and the bore.
  • a de-mountable cap may be provided for releasable mounting onto the first end of the fastener so as to seal an opening into the cavity.
  • the threaded portion is a threaded male end having a threaded surface around its exterior surface. The outer surface may be substantially cylindrical.
  • the bore and the fastener body may be cylindrical.
  • the bore has a diameter measured orthogonal to the axis and a length along the longitudinal axis. The length may be at least equal to the diameter.
  • the second end terminates in a planar surface substantially orthogonal to the longitudinal axis, hi particular, the planar surface may be an annular surface extending circurnferentially around an opening into the bore so as to provide a bearing surface around the opening.
  • a ratchet mounting close-fit fastener system may include first and second fastener elements, where each of the two elements has a rigid body having opposite first and second ends, and a substantially smoothly curved outer surface extending from the first end to the second end.
  • Each of the elements has a first end having a socket drive receiving cavity formed therein for receiving a male socket drive shaft into snug mating engagement along a longitudinal axis of the body, and a releasable locking means cooperating between the cavity and the drive shaft so as to releasably lock the fastener onto the corresponding drive shaft.
  • Each of the elements also has a second end, opposite its first end, formed to include a threaded portion.
  • each element is symmetric about the longitudinal axis for threaded mating engagement of the threaded portion of each the elements with each other.
  • the cavity and the threaded portion are oppositely disposed on each element for mounting of a drive shaft to the cavity and mounting of the elements to each other from opposed facing opposite directions.
  • the threaded portion of the first fastener element may be a female bore threaded end and the threaded portion of the second fastener element is a male threaded end sized to threadably mate into the female bore threaded end.
  • Figure 1 is, in partially exploded perspective view, a prior art socket wrench, socket attachment, and nut for mounting onto an exposed vertical threaded stud.
  • Figure 2 is, in partially exploded perspective view, a conventional socket wrench being mounted onto a female ratchet fit fastener according to the present invention for threaded mounting of the fastener onto an exposed threaded stud.
  • Figure 3 is, in partially exploded view, the ratchet fit fastener of Figure 2 being threadably mounted onto an exposed threaded stud by the use of a conventional socket wrench and extension.
  • Figure 4 is, in side elevation view, the ratchet fit fastener of Figure 2 with the drive shaft receiving cavity and threaded bore shown in dotted outline.
  • Figure 5 is the fastener of Figure 4 in perspective view.
  • Figure 6 is, in plan view, the fastener of Figure 4.
  • Figure 7 is, in plan view, a fastener according to the present invention, sized to accept a smaller socket wrench stub drive shaft and having a rigid membrane separating the threaded bore from the drive shaft receiving cavity.
  • Figure 8 is, in bottom view, the fastener of Figure 7.
  • Figure 9 is, in perspective view, a cap for mounting into the drive shaft receiving cavity.
  • Figure 10a is, in perspective view, a male threaded fastener according to one aspect of the present invention.
  • Figure 10b is, in side elevation view, the fastener of Figure 10a.
  • Figure 1 Oc is in plan view, the fastener of Figure 10b.
  • a conventional socket wrench 10 includes a ratcheting head 12 driving a square-headed stub drive shaft 14 so as to rotate drive shaft 14 in direction A.
  • Stub drive shaft 14 mounts into a correspondingly sized and correspondingly shaped shaft receiving socket 16 (shown in dotted outline in Figure 1) in a conventional socket attachment 18.
  • Socket attachment 18 has at it's opposite end a nut receiving socket 20 for receiving in relatively loose, sliding engagement therein a nut 22.
  • the nut may be slid in direction B in to and out of nut receiving socket 20.
  • Nut 22 engages against correspondingly shaped shoulders 20a lining socket 20.
  • nut receiving socket 20 may then be slid over nut 22 and socket 10 rotated so as to rotate shaft 14 in direction A thereby correspondingly turning nut 22 in threaded engagement along stud 24.
  • nut 22 will merely fall out of the socket attachment. It is thus difficult if not impossible to remotely manipulate the socket wrench and socket attachment so as to mount the nut onto the stud without the manual threading of the nut onto the stud first.
  • the conventional socket attachment 18 whether or not used in conjunction with a conventional socket extension 26, is entirely replaced with a threaded fastener 28 according to the present invention such as a female threaded fastener 28.
  • Female fastener 28 releasably lockably mounts, at its end 28a, onto stub drive shaft 14 or onto the corresponding square head of the driving end of an extension 26.
  • Threaded fastener 28 may be pinched or otherwise stove in the sense of a stove nut to create a locking thread.
  • the opposite end 28b of fastener 28 threadably mounts onto bolt or stud 24.
  • female threaded fastener 28 has a square-headed shaft receiving socket 16 for receiving therein stub drive shaft 14 or head 26a.
  • Drive shaft 14 or head 26a is inserted into socket 16 so as to engage a spring- loaded ball 14a on shaft 14, or a corresponding ball on head 26a, with a corresponding detent 16a formed in one or more sidewalls (for example, all of the sidewalls) of shaft receiving socket 16.
  • detent 16a need not necessarily be round or spherical such as illustrated in dotted outline in Figure 4, but may also be formed as an elongate groove or channel formed in the sidewall so long as, with shaft 14 or head 26a completely mounted into socket 16, spring-loaded ball 14a lodges resiliently into resiliency biased engagement with the detent, in whatever form, so as to resist drive shaft 14 or head 26a being removed from socket 16.
  • Socket wrench 10, including extension 26 if used may then be removed by sharply pulling the socket wrench and extension in a direction away, and coaxial with, bolt or stud 24 for example in direction D.
  • fastener 28 threadably mounted onto bolt or stud 24 for example so as to torque fastener 28 snugly down onto stud 24 so that the length of stud 24 extends a significant proportion of the length threaded bore 30 (by conventional rule of thumb, this distance being substantially equal to the diameter of the fastener)
  • pulling sharply both the socket wrench, and extension if used, in direction D disengages the corresponding spring-loaded ball from detent 16a thereby allowing the removal of stub drive shaft 14, or the corresponding drive head 26a if an extension is used, from within socket 16 thereby leaving fastener 28 engaged onto bolt or stud 24.
  • a conventional socket wrench 10 may be replaced by a modified socket wrench such as that which is the subject of United States Patent No. 5,058,463 which issued to Wannop on October 22, 1991 for a Ratchet Wrench With Dual- Rotating Constant Drive Handle.
  • the use of the modified socket wrench of Wannop would also provide for the use of fasteners 28 in very hard to reach places with very tight or close tolerances where for example a straight ⁇ in mounting of the fastener in coaxial alignment with the stud is not possible because of obstructions, therefore requiring the entry of the socket wrench carrying fastener 28 from a different angle so as to mount fastener 28 onto stud 24 from an entry passageway which is orthogonal to the stud.
  • the female fastener 28 will provide substantially the same bearing surface but will fit through the close tolerances due to the lack of the external shoulders 22a such as found on the exterior of a conventional nut.
  • the length or depth of threaded bore 30 will have to be at least long enough to accommodate the exposed length of bolt or stud 24 so as to allow end 28b to be snugged and torqued down onto the surface 32, for example a valve cover, being secured onto the exposed bolt or stud.
  • socket wrench 10 is conventional in the sense that stub drive shaft 14 is a conventional quarter inch, three eighths inch, half inch, three-quarter inch, or one inch diameter drive
  • shaft receiving socket 16 may be sized accordingly to snugly accommodate the corresponding stub drive shaft diameter.
  • socket 16 may only be sized to accommodate a quarter inch drive shaft.
  • fastener 28 the larger the diameter of fastener 28, the larger the diameter of drive shaft 14 or head 26a which may be accommodated in socket 16.
  • the use of an increasingly sized array of fasteners 28 will provide a corresponding array of increasingly sized threaded bores 30 so that a set of fasteners 28 may provide for a full range of expected sizes of threaded fasteners.
  • threads 30a may be of various pitch or size to accommodate the various threads found on the male fasteners, depending on the application.
  • a cap 34 may be provided which snugly and removably mounts into socket 16 by means of square-headed male mounting member 34a.
  • Cap 34 may be decorative and may include logos or trademarks having a commercial appeal or may provide for a capped chrome finish on a fastener 28, which may also have a chromed finish, so as to provide a decorative finished appearance especially where the use of conventional nuts would be unsightly because of the protrusion of the stud therethrough for example in engine compartments of vehicles used for showing.
  • FIG. 10a- 10c Depicted in Figures 10a- 10c is a corresponding male fastener 228 which may be used in an application where a bolt is required to be mounted into a threaded receptacle which itself is located in a very difficult to reach spot so that, again, the fastener may be positively locked onto the distal end of for example an extension 26 and remotely manipulated using a conventional socket wrench 10 to thereby drive the male fastener into threaded engagement in the threaded female cavity.
  • Male fastener 228 may include an end 228a including a shaft receiving socket 216 and a threaded shaft 240 for installation in a threaded receptacle.

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 système de fixation à montage à cliquet comprenant un corps rigide ayant une cavité de réception d'entraînement à douille formée dans une première extrémité pour recevoir un arbre d'entraînement à douille mâle en un parfait contact d'accouplement et un moyen de verrouillage libérable permettant de verrouiller le système de fixation de manière libérable sur l'arbre d'entraînement, et ayant une partie filetée sur une deuxième extrémité opposée pour l'enclenchement d'accouplement fileté de la partie filetée par rapport à un deuxième système de fixation fileté, et la cavité et la partie filetée étant disposées de manière opposée à des fins de montage de l'arbre d'entraînement sur la cavité et à des fins de montage du deuxième système de fixation sur la partie filetée dans des directions opposées.
PCT/CA2007/001758 2006-10-05 2007-10-01 Système de fixation à cliquet WO2008040122A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA2,562,589 2006-10-05
CA 2562589 CA2562589A1 (fr) 2006-10-05 2006-10-05 Piece de fixation permettant l'utilisation d'une cle a rochet sans douille

Publications (1)

Publication Number Publication Date
WO2008040122A1 true WO2008040122A1 (fr) 2008-04-10

Family

ID=39264276

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2007/001758 WO2008040122A1 (fr) 2006-10-05 2007-10-01 Système de fixation à cliquet

Country Status (2)

Country Link
CA (1) CA2562589A1 (fr)
WO (1) WO2008040122A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021097171A1 (fr) * 2019-11-14 2021-05-20 As America, Inc. Outil d'installation et procédé pour toilettes

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4786224A (en) * 1986-04-24 1988-11-22 Maron Products, Inc. Wheel lug nut cover
CA1245084A (fr) * 1983-04-11 1988-11-22 Anthony C. Worrallo Connecteur
US4911593A (en) * 1989-05-02 1990-03-27 Kephart R Dewain Ratchet driven threaded fasteners
CA2081959A1 (fr) * 1992-11-02 1994-05-03 Nino Conti Vis de blocage et boulon inviolables
WO1998027344A2 (fr) * 1996-12-03 1998-06-25 Coyote Enterprises, Inc. Appareil a ecrou a carre d'entrainement
US6676874B1 (en) * 1992-11-25 2004-01-13 Profil-Verbindungstechnik Gmbh & Co. Kg Method of sealing a fastener bore

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1245084A (fr) * 1983-04-11 1988-11-22 Anthony C. Worrallo Connecteur
US4786224A (en) * 1986-04-24 1988-11-22 Maron Products, Inc. Wheel lug nut cover
US4911593A (en) * 1989-05-02 1990-03-27 Kephart R Dewain Ratchet driven threaded fasteners
CA2081959A1 (fr) * 1992-11-02 1994-05-03 Nino Conti Vis de blocage et boulon inviolables
US6676874B1 (en) * 1992-11-25 2004-01-13 Profil-Verbindungstechnik Gmbh & Co. Kg Method of sealing a fastener bore
WO1998027344A2 (fr) * 1996-12-03 1998-06-25 Coyote Enterprises, Inc. Appareil a ecrou a carre d'entrainement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021097171A1 (fr) * 2019-11-14 2021-05-20 As America, Inc. Outil d'installation et procédé pour toilettes

Also Published As

Publication number Publication date
CA2562589A1 (fr) 2008-04-05

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