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WO1996035552A1 - Joint universel pour cle - Google Patents

Joint universel pour cle Download PDF

Info

Publication number
WO1996035552A1
WO1996035552A1 PCT/AU1996/000292 AU9600292W WO9635552A1 WO 1996035552 A1 WO1996035552 A1 WO 1996035552A1 AU 9600292 W AU9600292 W AU 9600292W WO 9635552 A1 WO9635552 A1 WO 9635552A1
Authority
WO
WIPO (PCT)
Prior art keywords
drive
ball
housing
universal
hexagonal
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
PCT/AU1996/000292
Other languages
English (en)
Inventor
Peter Eric Mitchell
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.)
MATRICBROOK Pty Ltd
Original Assignee
MATRICBROOK Pty Ltd
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 claimed from AUPN2966A external-priority patent/AUPN296695A0/en
Priority claimed from AUPN4701A external-priority patent/AUPN470195A0/en
Application filed by MATRICBROOK Pty Ltd filed Critical MATRICBROOK Pty Ltd
Priority to AU54935/96A priority Critical patent/AU5493596A/en
Publication of WO1996035552A1 publication Critical patent/WO1996035552A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B25B13/00—Spanners; Wrenches
    • B25B13/48—Spanners; Wrenches for special purposes
    • B25B13/481—Spanners; Wrenches for special purposes for operating in areas having limited access
    • 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
    • B25B13/02—Spanners; Wrenches with rigid jaws
    • B25B13/06—Spanners; Wrenches with rigid jaws of socket type
    • 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
    • B25B15/004—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section
    • B25B15/008—Allen-type keys
    • 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

  • UNIVERSALDRIVEFORAWRENCH BACKGROUND OF THE INVENTION— This invention relates to spanners for power operated ratchet wrenches and the like. Power tools are advantageously used in many situations where rapid and continuous rotation of fasteners is required, they may be operated by electric, pneumatic, hydraulic or mechanical means- While our earlier International patent specifications describes power operated wrenches having advantages in relation to simplicity, compactness and/or ease of assembly, these benefits can be substantially ameliorated by the use of cumbersome drive adaptors for coupling the tool to spanner sockets and the like. —SUMMARY OF THE INVENTION—
  • This invention aims to provide accessories suitable for use with such and other tools and which will be reliable and efficient in use.
  • this invention in one aspect resides broadly in a universal drive for a wrench having an open polygonal type drive ring, including:- a housing having either a polygonal outer surface or a splined outer surface for driving engagement with the drive ring and an open bore coaxial with the polygonal outer surface; a swivel ball closely accommodated in said open bore whereby the centre of the swivel member is locatable substantially within the bounds of the drive ring; locking means for locking said swivel ball against rotation within said bore, and drive means integral with said swivel ball and accessible externally of 'said housing.
  • the overall length of the housing is approximately the same as the axial length of a conventional spanner ring. It is also preferred that the housing is a thin walled hexagonal housing and the locking means for the swivel ball is a ulti faced ball having outer cylinder shaped wall sections coincident with the inner side walls of the polygonal drive ring for driving engagement with the drive ring.
  • the drive means may be, for example, a polygonal socket within the swivel ball for an Allen key or screw driver bit or the like, or a square drive for a spanner socket.
  • the drive means is an integral relatively short stem extending from the drive ball and terminating as a hexagonal ball portion adapted for universal engagement within the hexagonal socket of an Allen head fastener.
  • the length of the drive stem and the permissible angular rotation of the swivel ball within the open bore are such that the further hexagonal ball portion may operate at a position spaced laterally from the drive axis of the swivel ball to an extent that the hexagonal ball portion may engage within and rotate an Allen head fastener about an axis parallel to the drive axis and offset therefrom by an amount equal to the maximum radius of the housing.
  • an Allen head fastener passing through a member and located adjacent a wall at right angles to the member, such as being spaced from the wall a distance equal to the head diameter of the fastener may be accessed by the universal drive while maintaining the power wrench disposed with its drive axis parallel to the axis of the fastener.
  • This is advantageous as a fixed drive requires the power wrench be disposed with its drive axis inclined to the axis of the fastener. Such inclination is often prevented by the member or an adjacent wall or other obstruction.
  • the housing is suitably provided with an external collar disposed around the end thereof through which the drive means or driven member engaged therewith extends.
  • the outer collar limits the pivotal movement of the ball within the housing and is suitably formed with a circular peripheral portion such that a smooth swivel action is achieved during rotation.
  • the hexagonal ball portion is provided with a complementary collar such that the swiveling action provides collar to collar rolling contact.
  • the collar on the hexagonal ball portion is the same diameter as the outer diameter of the spherical ball from which the hexagonal ball is or could be machined whereby the workpiece may be held in a machining chuck for rotation about an axis coincident with the axis of the collar for machining the hexagonal faces on the ball.
  • FIG. 1 is a perspective view of a ratchet wrench
  • FIG. 2 illustrates a preferred form of universal Allen head drive according to one aspect of this invention
  • FIG. 3 illustrates a series of universal drive sockets made in accordance with the present invention
  • FIG. 4 illustrates the universal drive in section
  • FIG. 5 illustrates the workpiece from which the ball and drive means is machined
  • FIG. 6 illustrates square drive universal adaptors
  • FIG. 7 illustrates a preferred form of spark plug spanner
  • FIG. 8 illustrates a universal drive adapted for an alien key
  • FIG. 9 illustrates typical square drives.
  • a reducing socket 14 is mounted within the open hexagonal drive socket 25 and it accommodates the hex head of a bolt 15 which is held captive in the socket by engagement of the slide clip 12 with the shank of the bolt 15.
  • the bolt extends from one open end of the drive socket 25 and may be rotated by actuation of the air supply lever 16. It will be seen that the present arrangement will facilitate inserting a bolt into a mating threaded recess which is normally difficult to access.
  • the bolt may be tightened to the limit of the torque available from the air motor through the oscillating mechanism 13 and subsequently manually tightened by use of the wrench assembly 10 as a conventional spanner. It will also be seen that the head of the bolt 15 is accommodated within the drive socket 25 so that rotation of the bolt by the wrench does not produce a load reaction spaced laterally from the drive socket 25, thus facilitating ease of use of the wrench.
  • the drive socket 25 may co-operate with different adaptors or sockets including those illustrated in Figs. 2-7 all of which have a common hexagonal head portion 20 adapted for driving engagement with the drive socket 25.
  • Each head portion 20 may be provided with a retaining groove 21 at the junction of each flat 22 and a spring-biased locking ball 21 may be provided in the drive socket 25 for engagement with one of the grooves 21 for retaining the head portions in their operative position engaged within the drive socket 25.
  • the head portion 20 is suitably machined from suitable strength bar material, machined with registering internal and external hexagonal surfaces 22 and 23 respectively.
  • the internal hexagonal surface is adapted to co-operate with a hexagonal ball 24 formed integrally with and extending rearwardly from the hexagonal drive socket 26.
  • Engagement of the hexagonal ball 24 within the hexagonal recess 22 provides driving engagement between the head portion 20 and the socket 26 and a degree of swiveling as indicated by the tilted position of the drive socket 26 in dotted outline.
  • the drive socket 26 is necked at 27 intermediate the ball and the open socket portion 28 and the arrangement is such that the back face of the socket portion 29 rides against the leading chamfered annular edge portion 30 of the head portion 20 at maximum swiveling of the ball. This ensures that relatively smooth rotation is achieved when the elongate axis 31 of the socket assembly 26 is inclined to the central elongate axis of the head portion 20.
  • This arrangement also maintains the centre of rotation of the swiveling drive socket within the drive socket 25 and thus in line with the wrench handle so that offset loads apparent in conventional extension universal drives are not generated, making the wrench easier to operate.
  • the universal drive of this invention may also be used to advantage with conventional ring spanners and the like.
  • the base 32 of the head portion 20 is provided with an internal recess for accommodating a compression spring 33 which biases the hexagonal ball 24 forwardly and into engagement with a retaining circlip 34.
  • the socket assembly be machined from round section shaft 35 having an outer diameter equal to the outer diameter of the spherical ball 36 required for machining the hexagonal ball 24. This arrangement is illustrated in Fig. 5. After machining the spherical ball the part-machined article may be chucked in a lathe using the cylindrical end portion 38 which may be machined to form a socket or collar or other adaptor for the tool, and the hexagonal surfaces machined. At the same time the necked portion 27 may be machined which provides the necessary clearance for pivoting of the drive socket as illustrated.
  • Figs. 6-8 illustrate various inserts retained within the head portion to provide a universal drive for the respective inserts. These include square drives of various sizes as illustrated in Figs. 6a and 6b. A spark plug spanner is illustrated in Fig. 7 and an Allen key drive as illustrated in Fig. 8. Fig. 9 illustrates fixed square drives in which the square drive shafts are machined integral with the head portions.
  • the spark plug spanner illustrated in Fig. 7 includes a universal drive of the type illustrated in Fig. 4 with the hexagonal socket 26 being in the form of an extended socket having an internal hexagonal leading portion 40, an intermediate resilient retainer 41 and an open inner end portion 42 adapted to accommodate the end of a spark plug.
  • the arrangement is such that the retainer 41 is formed to resiliently engage about the insulating body of the spark plug and maintain the cap portion thereof free from the spanner so as to prevent contact therewith which, in conventional spanners, tends to result in cracking of the body of the spark plug.
  • the resilient retainer enables a spark plug to be inserted in the spanner and held therein for remote insertion into a difficult to access spark plug opening.
  • the Allen key type spanner 60 illustrated in Fig. 2 includes a universal drive 61 of the type illustrated in Fig. 4 with the hexagonal socket 62 having a tapered stem 63 extending therefrom to a hexagonal ball end 64.
  • the ball ends may be made in various sizes such as 6mm to 10mm to suit Allen key fasteners. It will be seen that the stem 63 is relatively short and thick for effective transfer of torque from the spanner to the fastener.
  • spanner 60 An advantage provided by the spanner 60 is clearly shown in the drawings where the spanner is shown driven by a wrench 10 of the type illustrated in Fig. 1 and operatively engaged with a Allen head bolt 65 located in a position which would be difficult to access with a conventional power wrench or with an Allen key which would require frequent engagement and disengagement of the key every half turn or less.

Landscapes

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

Abstract

L'invention concerne un joint universel pour un ensemble clé (10) pourvu d'une bague d'entraînement ouverte de type polygonal. Le joint universel comporte un corps ayant une surface extérieure (22) polygonale pour pouvoir entraîner la bague d'entraînement et un passage ouvert coaxial avec la surface extérieure polygonale. Ledit joint universel comporte également une rotule ajustée dans ledit passage ouvert, le centre de l'élément pivotant pouvant se positionner sensiblement dans les limites de la bague d'entraînement. L'invention décrit aussi des moyens de verrouillage pour bloquer ladite rotule afin de l'empêcher de tourner à l'intérieur du passage, et des moyens d'entraînement solidaires de ladite rotule et accessibles depuis l'extérieur du corps.
PCT/AU1996/000292 1995-05-12 1996-05-13 Joint universel pour cle Ceased WO1996035552A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU54935/96A AU5493596A (en) 1995-05-12 1996-05-13 Universal drive for a wrench

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
AUPN2966A AUPN296695A0 (en) 1995-05-12 1995-05-12 Power driven ratchet wrench
AUPN2966 1995-05-12
AUPN4701 1995-08-09
AUPN4701A AUPN470195A0 (en) 1995-08-09 1995-08-09 Power driven ratchet wrench
AU52149/96 1996-05-08
AU52149/96A AU5214996A (en) 1995-05-12 1996-05-08 Power driven ratchet wrench

Publications (1)

Publication Number Publication Date
WO1996035552A1 true WO1996035552A1 (fr) 1996-11-14

Family

ID=27154790

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1996/000292 Ceased WO1996035552A1 (fr) 1995-05-12 1996-05-13 Joint universel pour cle

Country Status (2)

Country Link
AU (1) AU5214996A (fr)
WO (1) WO1996035552A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19920544A1 (de) * 1999-05-05 2000-11-16 Adolf Wuerth Gmbh & Co Kg Gelenk für ein Werkzeug
EP1068930A3 (fr) * 1999-07-10 2001-11-28 Adolf Würth GmbH & Co. KG Insert pour une clef
CN102848336A (zh) * 2011-06-29 2013-01-02 志拓有限公司 六角球头扳手
CN114074304A (zh) * 2020-08-18 2022-02-22 青岛长淮机械有限公司 一种玻璃钉扳手
USD1031399S1 (en) 2021-07-09 2024-06-18 Milwaukee Electric Tool Corporation Socket holder
US12064864B2 (en) 2021-07-09 2024-08-20 Milwaukee Electric Tool Corporation Socket holder

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE827780C (de) * 1949-12-20 1952-01-14 Max Forst Steckschluessel mit zum Maul winklig einstellbarem Schaft
DE2419931A1 (de) * 1974-04-25 1975-11-06 Ernst Hecht Abgewinkelter steckschluessel
DE2651168A1 (de) * 1976-11-10 1978-05-18 Kolb Heinrich Kugelgelenk-steckschluessel
DE2745384A1 (de) * 1977-10-08 1979-05-03 Heinrich Kolb Kugelgelenk-steckschluessel mit magnetscheibe
US4188801A (en) * 1978-07-03 1980-02-19 Ingersoll-Rand Company Universal joint
DE2848243A1 (de) * 1978-11-07 1980-05-14 Hilti Ag Setzwerkzeug zum eindrehen einer gewindestange in ein bohrloch
DE3624686A1 (de) * 1985-07-22 1987-01-22 Dominion Tool & Die Co Flexibler steckschluessel
US4936701A (en) * 1989-08-30 1990-06-26 Mac Tools, Inc. Universal joint with rotating holder sleeve

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE827780C (de) * 1949-12-20 1952-01-14 Max Forst Steckschluessel mit zum Maul winklig einstellbarem Schaft
DE2419931A1 (de) * 1974-04-25 1975-11-06 Ernst Hecht Abgewinkelter steckschluessel
DE2651168A1 (de) * 1976-11-10 1978-05-18 Kolb Heinrich Kugelgelenk-steckschluessel
DE2745384A1 (de) * 1977-10-08 1979-05-03 Heinrich Kolb Kugelgelenk-steckschluessel mit magnetscheibe
US4188801A (en) * 1978-07-03 1980-02-19 Ingersoll-Rand Company Universal joint
DE2848243A1 (de) * 1978-11-07 1980-05-14 Hilti Ag Setzwerkzeug zum eindrehen einer gewindestange in ein bohrloch
DE3624686A1 (de) * 1985-07-22 1987-01-22 Dominion Tool & Die Co Flexibler steckschluessel
US4936701A (en) * 1989-08-30 1990-06-26 Mac Tools, Inc. Universal joint with rotating holder sleeve

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19920544A1 (de) * 1999-05-05 2000-11-16 Adolf Wuerth Gmbh & Co Kg Gelenk für ein Werkzeug
DE19920544C2 (de) * 1999-05-05 2001-06-07 Adolf Wuerth Gmbh & Co Kg Gelenk für ein Werkzeug
EP1068930A3 (fr) * 1999-07-10 2001-11-28 Adolf Würth GmbH & Co. KG Insert pour une clef
CN102848336A (zh) * 2011-06-29 2013-01-02 志拓有限公司 六角球头扳手
CN114074304A (zh) * 2020-08-18 2022-02-22 青岛长淮机械有限公司 一种玻璃钉扳手
USD1031399S1 (en) 2021-07-09 2024-06-18 Milwaukee Electric Tool Corporation Socket holder
US12064864B2 (en) 2021-07-09 2024-08-20 Milwaukee Electric Tool Corporation Socket holder
USD1063580S1 (en) 2021-07-09 2025-02-25 Milwaukee Electric Tool Corporation Socket holder

Also Published As

Publication number Publication date
AU5214996A (en) 1996-11-21

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