EP0321164B1 - Vehicle jack - Google Patents

Vehicle jack Download PDF

Info

Publication number
EP0321164B1
EP0321164B1 EP88311719A EP88311719A EP0321164B1 EP 0321164 B1 EP0321164 B1 EP 0321164B1 EP 88311719 A EP88311719 A EP 88311719A EP 88311719 A EP88311719 A EP 88311719A EP 0321164 B1 EP0321164 B1 EP 0321164B1
Authority
EP
European Patent Office
Prior art keywords
handle
axis
vehicle
jack
rotatable member
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.)
Expired - Lifetime
Application number
EP88311719A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0321164A1 (en
Inventor
Graham Henry Colton
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.)
Metallifacture Ltd
Original Assignee
Metallifacture 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
Application filed by Metallifacture Ltd filed Critical Metallifacture Ltd
Priority to AT88311719T priority Critical patent/ATE69784T1/de
Publication of EP0321164A1 publication Critical patent/EP0321164A1/en
Application granted granted Critical
Publication of EP0321164B1 publication Critical patent/EP0321164B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F13/00—Common constructional features or accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/08—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
    • B66F3/12—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated comprising toggle levers
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G1/00—Controlling members, e.g. knobs or handles; Assemblies or arrangements thereof; Indicating position of controlling members
    • G05G1/08—Controlling members for hand actuation by rotary movement, e.g. hand wheels

Definitions

  • This invention relates to a vehicle jack and especially to a drive assembly for rotating a rotatable member eg. an operating shaft of a vehicle jack.
  • DE-A-3510196 discloses a vehicle jack comprising a ground-engaging portion, a vehicle-engaging portion and means for moving the vehicle-engaging portion relative to the ground-engaging portion, in the operation of the jack, said means including a drive assembly comprising a rotatable member mounted for rotation about an axis, connecting means secured to the rotatable member, and a handle carried by the connecting means for rotating the rotatable member about its axis, the drive assembly being such that the handle can be moved relative to the axis to adjust the radial distance of a handle portion of the handle from the axis.
  • the present invention is characterised in that the connecting means comprises a connecting member which projects at right angles to the axis of the rotatable member, in that the handle portion projects generally at right angles to a lengthwise direction of the handle, in that the handle comprises a slot remote from the handle portion, extending generally in the lengthwise direction of the handle and within which said member is received and retained and in that a portion of the handle defining the slot is slidingly received in an annular groove of the connecting means, a central axis of the groove being positioned at right angles to the axis.
  • the handle is captive with the connecting member.
  • the handle can be freely moved relative to the connecting means when the handle is not under load to adjust it to an appropriate operational position but locks in said operational position when the handle is operated to rotate the rotatable member.
  • the handle locks by frictional engagement between the handle and the connecting means.
  • the connecting member comprises a body portion secured to the rotatable member having a head portion remote from the rotatable member which define the groove in which said portions of the handle are received.
  • the head portion is in the form of a headed stud secured projecting at right angles to the axis of rotation and passing through the slot.
  • the handle can be moved to slide the stud along the slot to adjust it to an appropriate operational position and is constructed so that the handle portion of the handle, in a desired operational position, is parallel with the axis of rotation.
  • This construction allows the handle to be rotated about the axis of the stud (at right angles to the axis of rotation) so that, in storage, the handle can occupy a position lying substantially parallel with a body of the jack.
  • the handle of a preferred jack in accordance with the invention is formed of steel rod bent to a desired shape.
  • the jack 10 comprises a drive assembly 12 for rotating a rotatable member namely a screw threaded shaft 14 about an axis A.
  • the shaft 14 is received in a screw threaded nut 16 pivotally mounted in a body portion 18 of the jack 10.
  • the jack 10 is of generally known construction and further comprises an arm 20 pivotally mounted by a pivot 26 on the body 18 between a foot portion 24 and the nut 16.
  • An end portion of the shaft 14 is mounted for rotation in a bearing assembly 22 carried on an end portion of the arm 20 remote from its pivot 26.
  • rotation of the shaft 14 in the nut 16 is effective to move the bearing assembly 22 towards or away from the nut 16, whereby to cause the arm 20 to pivot about its pivot 26.
  • a vehicle engaging member 28 At an outermost end portion remote from the pivot 26 is mounted a vehicle engaging member 28.
  • the drive assembly 12 for rotating the shaft 14 comprises connecting means including a member 30 secured to an outer end portion of the shaft 14 remote from the bearing 22.
  • the member 30 has a head portion 32 arranged to provide an annular groove 34 around the member 30.
  • a central axis X of the annular groove is positioned at right angles to the axis A of rotation of the shaft 14.
  • a handle 36 for rotating the shaft 14 about its axis A is carried by the member 30.
  • the construction and arrangement is such that the handle 36 can be moved relative to the axis of rotation A to move a handle portion 38 (which projects generally at right angles to a lengthwise direction of the handle 36) towards or away from the axis of rotation A, thus to adjust the operational position of the handle portion 38 and to adjust its operational radius about the axis A.
  • the handle 36 is provided with a slot 40 extending generally lengthwise of the handle 36 through which part of the member 30 projects.
  • the handle is retained in place on the member 30 by the head portion 32 with parts of the handle defining the slot 40 received in the groove 34 and the axis X of the member 30 extending through the slot 40 at right angles thereto.
  • the handle 36 may thus be slid, with the member 30 moving along the slot 40, to move the handle portion 38 closer to or further away from the axis X of the member 30. Portions of the handle 36 slide along the groove 34.
  • the handle 36 is shown with its handle portion 38 at the maximum radius from the axis X of the member 30 and from the axis of rotation A of the shaft 14.
  • the handle 36 When it is wished to operate the jack 10 by rotating the shaft 14, the handle 36 is positioned with its handle portion 38 in a position lying generally parallel with the axis A (as shown in Figure 1 of the drawings) and the handle portion 38 is rotated about the axis A whereby to rotate the shaft, driving the shaft through the member 30. If it is wished to shorten the radius of operation of the handle portion 36, the handle 36 is moved to slide the projecting portion of the member 30 along the slot 40 to a selected operational position along the slot, whilst still retaining the handle portion 38 parallel with the axis A. Upon applying driving action to the handle portion 38, the frictional engagement between the handle 36 and the various parts of the member 30 is sufficient to prevent the handle 36 sliding relative to the member 30. However, if desired, means can be provided for clamping the handle in an adjusted position.
  • the handle is formed of steel rod bent to a desired shape: however, the handle 36 may alternatively be provided by a flat metal member or other means, with a suitably shaped slot cut in it.
  • the rod may be bent in situ around a former, after it has been placed in position along the groove 34 of the member 30.
  • the slot 40 may be formed first, if desired, and the handle placed in position on the member 30, the head 32 being secured in place after the handle has been positioned first on a projecting shaft portion 33 projecting from a body 31 of the member 30, the groove 34 being provided by the shaft portion 33 bounded at either side by the body 31 and head 32.
  • the handle 36 is made of two portions of metal bar welded together, a first part being provided by a generally straight portion but one end portion of which is bent to provide the handle portion, and the second part being provided by a piece of bar, bent to a generally U-shape, the arms of the U being welded to the straight portion to provide the slot 40.
  • a single piece of steel rod has been bent to provide the handle 36 and the slot 40.
  • the welded construction may be slightly stronger, as it prevents the slot 40 opening out should an excessive load by applied to the jack.
  • the handle portion 38 comprises a sleeve carried for rotation on a part of the rod which has been bent so that it lies substantially at right angles to the main straight portion of the handle 36.
  • the arm 20 occupies the position in which it is shown in chain dot line in Figure 1 and the member 30 and shaft 14 occupy the positions in which they are shown in chain dot line in Figure 1.
  • the handle 36 can be rotated about the axis X so that it occupies a position lying substantially parallel with the body 18 of the jack thus ensuring that the jack can be compactly folded away for storage.
  • the handle When it is desired to use the jack, the handle is pivoted about the axis X to rotate it to a suitable operating position where the straight portion of the handle lies substantially at right angles to the axis A of the shaft 14 as shown in Figure 1, with the handle portion 38 parallel to the axis A.
  • the illustrative jack is cheap and simple in operation and there is no possibility of the handle 36 becoming separated from the remainder of the jack and lost, for example when changing a wheel. Because it is possible to adjust the operating position of the handle 36 and, in particular, the handle portion 38, it is possible for the operator to select an operating position where the risk of injuring himself by contact with the ground or a vehicle which is being jacked up is minimised.
  • jacks including a drive assembly having a rotatable member and a handle by which it is operated may be constructed in accordance with the invention, for example a jack of the type described by way of example in our patent No. 1341363.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Physics & Mathematics (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Lock And Its Accessories (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Feeding Of Workpieces (AREA)
  • Valve Device For Special Equipments (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Vehicle Body Suspensions (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Auxiliary Devices For Music (AREA)
  • Magnetic Heads (AREA)
EP88311719A 1987-12-17 1988-12-09 Vehicle jack Expired - Lifetime EP0321164B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88311719T ATE69784T1 (de) 1987-12-17 1988-12-09 Wagenheber.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8729467A GB2213783A (en) 1987-12-17 1987-12-17 Adjustable length hand crank for jack
GB8729467 1987-12-17

Publications (2)

Publication Number Publication Date
EP0321164A1 EP0321164A1 (en) 1989-06-21
EP0321164B1 true EP0321164B1 (en) 1991-11-27

Family

ID=10628641

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88311719A Expired - Lifetime EP0321164B1 (en) 1987-12-17 1988-12-09 Vehicle jack

Country Status (7)

Country Link
EP (1) EP0321164B1 (enrdf_load_stackoverflow)
JP (1) JPH01308396A (enrdf_load_stackoverflow)
AT (1) ATE69784T1 (enrdf_load_stackoverflow)
DE (1) DE3866525D1 (enrdf_load_stackoverflow)
ES (1) ES2028305T3 (enrdf_load_stackoverflow)
GB (1) GB2213783A (enrdf_load_stackoverflow)
PT (1) PT89240B (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2651491A1 (fr) * 1989-09-05 1991-03-08 Fabrication Accessoires Automo Cric pour le soulevement d'une charge et, notamment, d'un vehicule automobile.
DE4024809A1 (de) * 1990-08-04 1992-02-06 Storz E A Kg Wagenheber
DE29716460U1 (de) * 1997-09-15 1997-12-11 Eurohitch Sattelkupplungen GmbH, 33758 Schloß Holte-Stukenbrock Handkurbel

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE388798A (enrdf_load_stackoverflow) *
GB814128A (en) * 1955-10-11 1959-05-27 Lewis Frederick Alexander Improvements in or relating to cranks for pedal-operated apparatus
US1499474A (en) * 1923-06-15 1924-07-01 Ralph H Price Crank
GB220773A (en) * 1923-07-11 1924-08-28 Brayknawt Super Mangle Company Improvements in or relating to the mounting of the operating handles upon hand-operated machines
GB244213A (en) * 1924-10-09 1925-12-17 George Clement Jenks Improvements in or relating to handles for imparting rotary movement
GB230755A (en) * 1924-11-15 1925-03-19 William Nicholson Brown Improvements relating to the jacking up of motor vehicles
FR622867A (fr) * 1926-10-09 1927-06-09 Manivelle combinée pour la manoeuvre des crics d'automobiles et tous autres véhicules
FR660610A (fr) * 1928-09-20 1929-07-13 Tige pour commande des crics
GB349335A (en) * 1930-06-14 1931-05-28 Douglas Motors Ltd Lifting and conveyor trucks
GB631401A (en) * 1946-07-29 1949-11-02 William Thomas Whittingslowe Improvements in wringers
FR1290971A (fr) * 1961-03-08 1962-04-20 Bretton Ets Perfectionnements au montage des manivelles, en particulier pour moulinets de pêche
US3789696A (en) * 1973-01-10 1974-02-05 W Beam Pedal extenders for bicycle
AT358769B (de) * 1974-06-07 1980-09-25 Bilstein August Fa Wagenheber
FR2473657A1 (fr) * 1979-12-05 1981-07-17 Slyper Jean Manivelle extensible a verrouillage dans plusieurs longueurs d'utilisation
JPS58113097A (ja) * 1981-12-27 1983-07-05 株式会社　高田工場 ジヤツキ
FR2558817B1 (fr) * 1984-01-26 1987-04-24 Astra Ets Florimond Chabardes Perfectionnement aux systemes d'entrainement des vis des crics losanges
DE3510196C2 (de) * 1985-03-21 1995-11-23 Storz E A Kg Wagenheber
US4586696A (en) * 1985-10-25 1986-05-06 Chrysler Corporation Vehicle lifting jack with integral stowable crank handle

Also Published As

Publication number Publication date
PT89240B (pt) 1995-05-04
EP0321164A1 (en) 1989-06-21
ES2028305T3 (es) 1992-07-01
PT89240A (pt) 1989-09-14
DE3866525D1 (de) 1992-01-09
JPH01308396A (ja) 1989-12-13
GB8729467D0 (en) 1988-02-03
JPH0427159B2 (enrdf_load_stackoverflow) 1992-05-11
GB2213783A (en) 1989-08-23
ATE69784T1 (de) 1991-12-15

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