EP0697366B1 - Wagenheber - Google Patents

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Publication number
EP0697366B1
EP0697366B1 EP19950108132 EP95108132A EP0697366B1 EP 0697366 B1 EP0697366 B1 EP 0697366B1 EP 19950108132 EP19950108132 EP 19950108132 EP 95108132 A EP95108132 A EP 95108132A EP 0697366 B1 EP0697366 B1 EP 0697366B1
Authority
EP
European Patent Office
Prior art keywords
screw section
fixed sleeve
drive
output
section
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
EP19950108132
Other languages
English (en)
French (fr)
Other versions
EP0697366A1 (de
Inventor
Kanji Tomidokoro
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.)
Individual
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
Priority claimed from JP14691694A external-priority patent/JPH07315775A/ja
Application filed by Individual filed Critical Individual
Publication of EP0697366A1 publication Critical patent/EP0697366A1/de
Application granted granted Critical
Publication of EP0697366B1 publication Critical patent/EP0697366B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • B66F3/44—Devices, e.g. jacks, adapted for uninterrupted lifting of loads with self-contained electric driving motors
    • 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
    • B66F3/10—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated with telescopic sleeves
    • 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
    • B66F3/18—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated actuated through worm gearings

Definitions

  • This invention relates to a jack utilizing a bearing ball and screw assembly and, more particularly, it relates to a jack that can be used as a small electric jack.
  • Japanese Patent Publication No. 4-56956 discloses a bearing ball and screw assembly comprising a fixed sleeve, an lifting sleeve arranged within said fixed sleeve and a male screw member arranged within said lifting sleeve.
  • Said male screw member is secured to a driven gear arranged at a lower portion of the fixed sleeve and located at the center of the fixed sleeve.
  • Said lifting sleeve retains a plurality of bearing balls engaged with the male screw of said male screw member and is provided on the outer surface thereof with a vertical groove for engagedly receiving a rotation check ball.
  • the driven gear and the male screw member are rotated, the bearing balls rotate and move inside the male screw to raise and lower said bearing ball and said lifting sleeve.
  • An assembly having the above described configuration is accompanied by a problem that the lifting sleeve has to be made thick and heavy to show a predetermined strength, since a vertical groove is formed there.
  • Japanese Patent Publication No. 4-74761 discloses another bearing ball and screw assembly comprising a fixed sleeve, a lifting sleeve arranged within said fixed sleeve and a rotary shaft arranged within said fixed sleeve.
  • Said rotary shaft is secured to a driven gear arranged at a lower portion of the fixed sleeve and located at the center of the fixed sleeve.
  • Said lifting sleeve is provided on the outer surface thereof with a vertical rotation check groove and on the inner surface thereof with a male screw.
  • Said rotary shaft retains a plurality of baring balls engaged with said male screw.
  • the driven gear and said rotary shaft are rotated, the bearing balls rotate and move inside the male screw to raise and lower the lifting sleeve.
  • An assembly having the above described configuration is accompanied by a problem that the process of arranging a female screw on the lifting sleeve costs considerably and the lifting sleeve has to be made thick and heavy to show a predetermined strength, since a male screw and a rotation check groove are arranged there. Further, the rotary shaft has to made thick and heavy so as to retain the plurality of bearing balls on the outer surface thereof.
  • DE-U 18 38 870 discloses a bearing ball and screw assembly comprising a fixed sleeve, a rotary sleeve rotatably supported in said fixed sleeve and a lifting sleeve arranged within said fixed sleeve.
  • Said lifting sleeve is provided on the outer surface thereof with a male screw and a plurality of bearing balls are arranged on said rotary sleeve and engaged with said male screw.
  • Addionally Japanese Patent Publication No. 4-077049 discloses a lifting sleeve provided at a lower portion of the outer surface with a vertical rotation check groove.
  • a rotation check pin is arranged at a lower portion of the inside of said fixed sleeve where said rotary sleeve is not extending.
  • Said rotary sleeve is provided on the outer surface thereof with a pawl that engages with a ratchet arranged on said fixed sleeve. As the rotary sleeve is manually rotated in a selected direction, said bearing balls rotate and move inside said male screw to raise the lifting sleeve.
  • An assembly having the above described configuration is accompanied by a problem that, when said ratchet is released to allow the weight supporting said lifting sleeve to fall, said weight requires to be slightly lifted by means other than the assembly, an operation impossible to be carried out in most cases.
  • Japanese Patent Publication No. 6-40360 discloses an assembly substantially same as the one in the above Japanese Patent Publication No. 4-77049 but does not comprise a ratchet for preventing the weight from falling down.
  • an assembly as disclosed in Japanese Patent Publication No. 6-40360 can be used only for the purpose of lifting the weight is lifted or enlarging the distance between the weight and the underlying structure.
  • bearing balls are arranged between said fixed sleeve and said drive screw section.
  • said output screw section is provided with a device for controlling the height of the output.
  • the axial line of said output screw section and that of said drive mechanism are parallel relative to each other.
  • the axial line of said output screw section and that of said drive mechanism rectangularly intersect each other and said drive mechanism and said drive screw section are engaged with each other by means of a worm gear.
  • said fixed sleeve, said drive screw section and said output screw section that is engaged with said drive screw section by means of a ball and screw assembly and blocked against any rotary movement are housed in a waterproof box and an extension of said output screw section is housed in a waterproof bellows device.
  • a jack 1 comprises a fixed sleeve 2, a drive screw section 4 rotatably supported in said fixed sleeve 2, an output screw section 6 engaged with said drive screw section 4 by means of bearing ball and screw assembly, and a drive motor 8 provided with a reduction gear 7 supported by said fixed sleeve 2 and interlocked with said drive screw section 4.
  • Said motor 8 may be a DC motor or an AC motor.
  • the fixed sleeve 2 is constituted by a base section 12 provided with a plurality of height adjusting screws 10 for adjusting the inclination of the base section, a sleeve section 18 for axially supporting a drive screw section 4 at an upper portion thereof and bearing the weight of the drive screw section 4 on the upper surface thereof by way of a plurality of first bearing balls 16 and an arm section 20 for supporting the motor 8 such that the axis of rotation of the motor 8 is vertically held.
  • the fixed sleeve 2 additionally has in the inside, upright anti-rotation member 24 for checking any rotation movement of the output screw section 6.
  • a slip-out check screw 28 is arranged at a lower portion of the sleeve 18 for preventing the drive screw section 4 from coming out of the fixed sleeve 2.
  • the drive screw section 4 is constituted by a ball sleeve section 32 for rotatably supporting a plurality of second bearing balls 30 in a plurality of penetrate holes thereon, respectively, and a gear section 38 provided on the lower surface thereof with an annular groove for receiving first bearing balls 16 and along the periphery thereof with teeth 36 for engaging with output teeth 34 of the motor 8.
  • the sleeve section 32 is provided a a lower portion on the outer surface thereof with an annular groove 39 for engaging with the check screw 28.
  • the sleeve section 32 has a thickness equal to a radius of the second bearing balls 30.
  • the output screw section 6 is provided on the outer surface thereof with a helical groove 40 for engaging with the second bearing balls, at a lower portion thereof with a anti-rotation bore 42 through which the anti-rotation member 24 slidingly moves and at an upper portion thereof with a thread 46 for engaging with an output height adjusting screw member 44.
  • the output height adjusting screw member 44 has at the top thereof a large diameter section 50 to be manually rotated.
  • the large diameter section 50 pivots a receiving member 48 on the sperical surface thereof.
  • the above described embodiment of jack 1 is operated in a manner as described blow. Firstly, the fixed sleeve 2 is directed to a desired direction such as a vertical direction by appropriately rotating some height adjusting screws 10. Then, the receiving member 48 is made to abut an object to be lifted (not shown) by appropriately rotating the height adjusting member 44. Thereafter, the motor 8 is energized to drive the drive screw section 4 to rotate. As the drive screw section 4 rotates, the second bearing balls 30 slidingly move within the helical groove 40 of the output screw section 6 which is blocked against any rotary movement to lift the output screw section 6.
  • the above described jack 1 is lightweight and compact and, in addition, can produce an astonishing power of lifting 1.25 tons, if it is connected a 6 to 12 volt battery of an automobile or a motor bicycle and selected a reduction ratio of 1/100 to 1/250 for the reduction gear 7, a reduction ratio of 1/3.5g of the output teeth 34 to the gear section 38, and a pitch of 8mm of the helical groove 40 of the output screw section 6.
  • Fig. 2 shows a second embodiment of jack according to the invention.
  • the components of this embodiment that are similar to those of the first embodiment will be denoted respectively by the same reference numerals and will not be described here any further.
  • the jack 100 comprises a motor 104 provided with a reduction gear 102 is supported horizontally on an arm 110 of the fixed sleeve 2.
  • the output gear of the motor 104 is a worm gear 112 that engages with a bevel gear 122 arranged in a gear section 120 of the drive screw section 4.
  • Fig. 3 shows a third embodiment of jack according to the invention which is a waterproof type apparatus.
  • the jack 200 comprises, as in the case of the first embodiment, a fixed sleeve 2 (not shown), a drive screw section 4 (not shown) rotatably supported in the fixed sleeve 2, said fixed sleeve 2 and said drive screw section 4 being housed in a waterproof box 210, an output screw section 6 and a height adjusting screw member 44 having an extension 202, said output screw section 6 and said extension 202 being airtightly covered by a waterproof bellows 204 and a bellows supporting member 206 for supporting the bellows 206 by way of a packing 208.
  • a fourth embodiment of jack according to the invention is similar to the first embodiment.
  • the second bearing ball 30 in the first embodiment is located in the penetrate hole, but the two second bearing balls 30 in the fourth embodiment are located in each penetrate hole so that the sleeve section has a thickness of one and half diameter of the second bearing ball 30.
  • the fourth embodiment is characterized to be strongly built, compared with the first embodiment.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Transmission Devices (AREA)

Claims (8)

  1. Hebewerkzeug (1; 100; 200) mit
    einer festen Hülse (2),
    einem Antriebsschraubabschnitt (4), welcher drehbar in der festen Hülse (2) getragen wird,
    einem Ausgangsschraubabschnitt (6), welcher mit dem Antriebsschraubabschnitt (4) über eine Anordnung (30, 40) mit Lagerkugeln und Schraubgewinde in Eingriff ist, und
    einem Antriebsmechanismus (8, 7; 104, 102), welcher mit dem Antriebsschraubabschnitt (4) gekuppelt bzw. verzahnt ist und
    einem Anti-Rotationselement (24), welches mit der festen Hülse (2) verbunden ist, dadurch gekennzeichnet, daß das Anti-Rotationselement (24) sich in einer aufrechten Richtung durch eine Anti-Rotationsbohrung (42) in einem unteren Abschnitt des Ausgangsschraubabschnittes (6) erstreckt, um jegliche Rotationsbewegung des Ausgangsschraubabschnittes (6) zu blockieren.
  2. Hebewerkzeug gemäß Anspruch 1, bei welchem der Antriebsmechanismus (8,7; 104, 102) mit einem Reduktionsmittel (7; 102) versehen ist, welches von der festen Hülse (2) getragen wird.
  3. Hebewerkzeug gemäß Anspruch 1, bei welchem Lagerkugeln (16) zwischen der festen Hülse (2) und dem Antriebsschraubenabschnitt (4) angeordnet sind.
  4. Hebewerkzeug gemäß Anspruch 1, bei welchem der Ausgangsschraubabschnitt (6) mit einer Vorrichtung (50, 44, 46) zum Regeln bzw. Steuern der axialen Erstreckung des Ausgangsschraubabschnittes (6) versehen ist.
  5. Hebewerkzeug gemäß Anspruch 1, bei welchem die axiale Linie des Ausgangsschraubabschnittes (6) und diejenige des Antriebsmechanismusses (8, 7) parallel relativ zueinander sind.
  6. Hebewerkzeug gemäß Anspruch 1, bei welchem die axiale Linie des Ausgangsschraubabschnittes (6) und diejenige des Antriebsmechanismus (104, 102) rechtwinklig in Bezug zueinander angeordnet sind und der Antriebsmechanismus (104, 102) und der Antriebsschraubabschnitt (4) miteinander über ein Schrauben- bzw. Schneckenrad (112) in Eingriff sind.
  7. Hebewerkzeug gemäß Anspruch 1, bei welchem die feste Hülse (2), der Antriebsschraubabschnitt (4) und der Ausgangsschraubabschnitt (6), welcher mit dem Antriebsschraubabschnitt (4) über die Anordnung (30, 40) mit Lagerkugeln und Schraubengewinde in Eingriff ist und gegen jegliche Drehbewegung blockiert ist, in einem wasserfesten bzw. wasserdichten Kasten (210) und eine Erstreckung bzw. Verlängerung des Ausgangsschraubabschnittes in einer wasserfesten bzw. wasserdichten Balgvorrichtung (204) beherbergt sind.
  8. Hebewerkzeug gemäß Anspruch 1, bei welchem das Reduktionsmittel eine Reduktionsgetriebeanordnung (7) ist.
EP19950108132 1994-05-26 1995-05-26 Wagenheber Expired - Lifetime EP0697366B1 (de)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP14691694A JPH07315775A (ja) 1994-05-26 1994-05-26 変速式ボールねじジャッキ装置
JP146916/94 1994-05-26
JP14691694 1994-05-26
JP20901294 1994-08-01
JP209012/94 1994-08-01
JP20901294 1994-08-01

Publications (2)

Publication Number Publication Date
EP0697366A1 EP0697366A1 (de) 1996-02-21
EP0697366B1 true EP0697366B1 (de) 1999-10-20

Family

ID=26477614

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19950108132 Expired - Lifetime EP0697366B1 (de) 1994-05-26 1995-05-26 Wagenheber

Country Status (2)

Country Link
EP (1) EP0697366B1 (de)
DE (1) DE69512849T2 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008062317B3 (de) * 2008-12-08 2010-01-07 Gkss-Forschungszentrum Geesthacht Gmbh Hebevorrichtung
ES2713552T3 (es) * 2012-07-20 2019-05-22 Tfp Engineering Pty Ltd Dispositivo de elevación
AU2013204283A1 (en) * 2012-07-20 2014-02-06 Phillip Farquharson Jack and support device
CN106660185B (zh) * 2014-05-29 2020-03-13 欧姆佩有限公司 用于移动负载及用于其控制的装置和方法
CN104671142A (zh) * 2015-03-11 2015-06-03 宁波捷美进出口有限公司 千斤顶
CN104876151A (zh) * 2015-05-04 2015-09-02 杭龙 一种千斤顶
CN108751001A (zh) * 2018-05-09 2018-11-06 江西中船航海仪器有限公司 一种高精度承载力大的升降机构
US11279602B2 (en) 2019-12-12 2022-03-22 Gilbert Engineering, LLC Smart jack array
CN112622839B (zh) * 2020-12-26 2022-04-29 江苏益建机车部件有限公司 一种用于汽车原地掉头的转向机构及其使用方法
EP4696639A1 (de) * 2024-08-08 2026-02-18 MAHA Maschinenbau Haldenwang GmbH & Co. KG Hubvorrichtung zum anheben von lasten und hubsystem zum einsatz in einer grube
CN118851055B (zh) * 2024-09-23 2024-11-29 江苏亚雄减速机械有限公司 一种轻量化高强度丝杆升降机

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190907038A (en) * 1909-03-24 1909-11-25 Thomas Foster Improvements in Screw Jacks.
US1414683A (en) * 1919-07-14 1922-05-02 Charles S Ackley Electric lifting jack
GB145991A (en) * 1919-07-24 1920-07-08 Francis William Apperley Improvements in jacks for motor cars
US1423834A (en) * 1921-10-20 1922-07-25 John M Crum Electric power jack
CH382943A (de) * 1960-05-18 1964-10-15 Wegmann Emil Winde
US4154434A (en) * 1977-10-26 1979-05-15 Wallis Bernard J Boot arrangement for piston-cylinder assembly
JPS6077956A (ja) 1983-10-05 1985-05-02 Kawasaki Steel Corp 曲げ特性および伸びフランジ成形性に優れた、強度レベル５０ｋｇｆ／ｍｍ２以上の高張力冷延鋼板の製造方法
JPS60224094A (ja) 1984-04-23 1985-11-08 株式会社日立製作所 負荷追従運転予測装置
JPH0640360B2 (ja) 1985-10-18 1994-05-25 新コスモス電機株式会社 ガス応動装置
JPS62120601A (ja) 1985-11-20 1987-06-01 Ozen Corp 選択式音響再生機のレコ−ド盤交換機構

Also Published As

Publication number Publication date
DE69512849D1 (de) 1999-11-25
DE69512849T2 (de) 2000-06-15
EP0697366A1 (de) 1996-02-21

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