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WO2018158770A1 - Roulette sphérique rétractable - Google Patents

Roulette sphérique rétractable Download PDF

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Publication number
WO2018158770A1
WO2018158770A1 PCT/IL2018/050227 IL2018050227W WO2018158770A1 WO 2018158770 A1 WO2018158770 A1 WO 2018158770A1 IL 2018050227 W IL2018050227 W IL 2018050227W WO 2018158770 A1 WO2018158770 A1 WO 2018158770A1
Authority
WO
WIPO (PCT)
Prior art keywords
lug
ball
housing
pivotable
lug housing
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/IL2018/050227
Other languages
English (en)
Inventor
Shlomo AHARON
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
Application filed by Individual filed Critical Individual
Publication of WO2018158770A1 publication Critical patent/WO2018158770A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B91/00—Feet for furniture in general
    • A47B91/002—Mechanical means to move furniture easily, e.g. air cushioning means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B19/00—Wheels not otherwise provided for or having characteristics specified in one of the subgroups of this group
    • B60B19/14—Ball-type wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B60B33/006—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism
    • B60B33/0063—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism no swivelling action, i.e. no real caster
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B60B33/04—Castors in general; Anti-clogging castors adjustable, e.g. in height; linearly shifting castors
    • B60B33/06—Castors in general; Anti-clogging castors adjustable, e.g. in height; linearly shifting castors mounted retractably
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B33/00—Castors in general; Anti-clogging castors
    • B60B33/08—Ball castors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B2200/00—Type of product being used or applied
    • B60B2200/20—Furniture or medical appliances

Definitions

  • the present invention relates to a new device for converting stationary objects, for example furniture, into easily movable objects, when desired, by attaching a retractable ball caster to the object.
  • Wheels have been used for centuries to provide motion to otherwise difficult-to-move objects. Where the primary purpose of the object is not its ability to change position, for example furniture, in order to assist motion of non-transport type objects, smaller wheels, such as caster wheels, have been developed to be attached to the underside of such objects.
  • a swivel caster I rotary wheel is used to provide an object rolling mobility in one mode and to be stationary in another, by simply modifying the position of the wheel with respect to the ground.
  • N.A. Rabelos in which a retractable ball caster is utilized to elevate and mobilize light loads such as chairs.
  • This device succeeds in improving the aesthetic quality of the device by partially hiding the caster in the stationary mode however it can only engage this mode when pressure is applied to the load allowing the ball caster( s) to recede partially into the load's structure restricting movement once the caster's housing contacts the floor.
  • springs When the pressure is removed, for example by a person standing up, springs cause the ball casters to resume their fully protruding positions.
  • This design is limited in that it provides no breaking adjustment and allows the load to be mobile at all times other than when pressure is applied to it.
  • a retractable ball caster comprising:
  • the device is comprised of a sliding lug mounted inside a cylindrical lug housing.
  • a sliding lug mounted inside the lug.
  • a hemispherical ball bearing cover which contains a plurality of ball bearings.
  • a pivotable ball is mounted inside the ball bearing cover and protrudes partially from the lug.
  • the ball bearings inside the ball bearing cover are interposed between the ball bearing cover and the pivotable ball allowing the pivotable ball low-friction rotational motion.
  • a retaining ring is fastened to the end of the lug, which has the pivotable ball protruding from it, and retains the ball bearing cover and pivotable balls in position inside the lug.
  • An eccentric cam is located inside the lug housing next to the sliding lug.
  • the eccentric cam is mounted on an axle that is slightly longer than the diameter of the lug housing.
  • the axle is mounted inside the lug housing along its diameter.
  • the axle which protrudes from two recesses in the lug housing, is secured, externally, at one end by an axle lock and at the other end by a lever.
  • the lug housing is designed to be attached to an object as an intermediary between the object and another surface upon which it rests.
  • the eccentric cam rotates and causes the lug to be displaced a certain distance parallel to the length of the lug housing.
  • This displacement dependent on the direction of lever rotation, causes the pivotable ball to be positioned either completely inside or protruding from the lug housing.
  • the pivotable ball is positioned inside the main housing, the circular lower rim of the lug housing is the intended contact point with the outside surface.
  • the contact between the lug housing and the surface is one of relatively high friction. As a result the object cannot be easily moved along this surface and a braking effect has been produced.
  • the pivotable ball and the ball bearings may be made of plastic, composite or other materials. It is desirable that such materials are used as they provide a self- lubrication effect in order to add to the effectiveness of the device.
  • the ball bearings may be coated with grease, graphite or other lubricating materials to reduce dust and other unwanted substances reducing device efficiency.
  • the torque provided by rotation of the lever provides a significant force reduction needed to extend the device than would otherwise be needed to lift the load under which the device is located.
  • the construction of the device allows it to be used at any angle of inclination given that the lower rim of the main housing is perpendicular to the contact surface.
  • the device can be configured to be operated manually or by an engine, which for example can be an electrical or hydraulic engine.
  • the engine can be configured to be remotely controlled.
  • a number of such devices e.g. in a furniture item having a corresponding number of legs, each device being mounted to one of the legs, all the devices can be operated simultaneously by a single controller.
  • FIG. 1 is a perspective view of a retractable ball caster device, in its fully retracted position, constructed and operated in accordance with the principles of the invention
  • Fig. 2 is a cross-sectional view of the retractable ball caster device, taken along section lines A-A of Fig. 1 ;
  • Fig. 3 is an exploded view of the retractable ball caster device, shown in Fig. 1;
  • Fig. 4 is a perspective cross-sectional view of the retractable ball caster device, in the fully retracted mode, taken along section lines B-B of Fig. 1 ;
  • Fig. 5 is a perspective cross-sectional view of the retractable ball caster device, in the fully extended mode, taken along section lines B-B of Fig. 1 .
  • FIG. 1 there is shown a perspective view of one embodiment of a fully extendable I retractable, retractable ball caster device 10, constructed in accordance with the principles of the present invention.
  • the device 10 comprises a lug housing 12, which is of a cylindrical nature. Located at the top of the lug housing 12 are a plurality of recesses 14 which are designed to accommodate standard screws or adaptors.
  • a lever 16 is aligned with the length of the lug housing 12. When the lever 16 is rotated approximately 90 degrees an internal motion mechanism enables a sliding lug 24 (not shown) with a protruding pivotable ball 30 (not shown) to protrude from the lug housing 12.
  • FIG. 2 there is shown a cross sectional view of the retractable ball caster device, taken along section lines A-A of Fig. 1 .
  • an axle lock 18 can be seen fitted in the side of the lug housing 12.
  • the lever 16 and the axle lock 18 are both fastened to opposite ends of an axle 20 securing its position within the lug housing 12.
  • An eccentric cam 22 is formed with shoulders 19 and is fitted onto the axle 20. Shoulders 1 are seated so as to be rotatable within a pair of retaining slots 25 forming a cradle on the underside of the top of lug housing 12.
  • the square cross section of the axle 20 is a close fit to a square orifice 21 formed in the eccentric cam 22, within which it is inserted.
  • Sliding lug 24 is located beneath eccentric cam 22, both of which are mounted inside lug housing 12. Located in the upper central edge of lug 24 is a plurality of tracks. In this embodiment of the device the lug has a track 23 with which the lower edge of eccentric cam 22 is in contact and is aligned.
  • a hemispherical ball bearing cover 26 is mounted inside lug housing 24.
  • the ball bearing cover 26 houses a plurality of evenly distributed ball bearings 28.
  • a large pivotable bal l 30 contacts ball bearings 28 and is also partially contained within ball bearing cover 26.
  • the ball bearings 28 act as an interposition between ball bearing cover 26 and pivotable ball 30 providing pivotable ball 30 the ability to rotate with minimal factional resistance.
  • a retaining ring 32 is fastened to a circular recess on the lower edge of lug 24 and has an inner diameter smaller than pivotable ball 30 which partially protrudes from it. The retaining ring 32 serves to retain the positions of pivotable ball 30. ball bearings 28 and ball bearing cover 26 within sliding lug 24.
  • FIG. 3 there is shown an exploded view of device 10 shown m Fig. 1 .
  • This view provides a clearer understanding of the elements and their relative position with respect to each olher.
  • the intended pattern for ball bearings 28, with regard to this embodiment of device 10, can be more clearly seen to cover pivotable hall 30 from multiple angles.
  • FIG. 4 there is shown a perspective cross-sectional view of device 10. in the fully retracted mode, taken along section lines B-B of Fig. 1 .
  • the assembled positions of several of the elements described in Fig. 2 are more clearly seen.
  • the approximate depth of recess 14 is shown.
  • the eccentric cam 22 is shown to rest on track 23 of lug 24 in the fully retracted position of device 10.
  • the square orifice 21 in eccentric cam 22 within which axle 20 is inserted is also seen more clearly, as is axle 20 itself in the fitted position.
  • the inner diameter of retaining ring 32 is seen to be positioned in a close fit around the lower side of pivotable ball 30.
  • retaining ring 32 is attached to the lower end of lug 24 and holds ball bearings 28 and pivotable ball 30 in position within lug 24 independent of lug housing 12. It can also be seen that the lower edge 33 of lug housing 12 is in contact with external surface 34.
  • FIG. 5 there is shown a perspective cross-sectional view of the device 10, in the fully extended mode, taken along section lines B-B of Fig. 1 .
  • eccentric cam 22 has been rotated approximately 90 degrees clockwise and has subsequently displaced lug 24.
  • the lug 24 has slid down inside lug housing 12 and now the pivotable ball 30 has become the singular contact point with external surface 34.
  • a plurality of devices 10 are mounted to the legs or side of a load, for example, the legs of an item of furniture, such that devices 10 become the only contact points between the load and the surface that the load is pressing against, for example, the floor.
  • device 10 In its fully retracted position, device 10 contacts surface 34 at lower edge 33 of lug housing 12, and provides a braking effect due to the factional force needed to move the device 10 along the surface. As a result the load is relatively stationary.
  • lever 16 of device 10 is rotated to a certain angle, and as a result, eccentric cam 22 rotates and displaces lug 24 so that pivoiable ball 30 now becomes the contact point of the load with the surface it is pressing against.
  • a stopper (not shown) formed on the underside of the top of lug housing 12 prevents eccentric cam 22 from being rotated to an angle where the device is not in one of the fully extended or retracted positions.
  • the low-friction construction of pivotable ball 30 and ball bearings 28 allows pivotable ball 30 to rotate easily.
  • the load can be moved in this dynamic mode with a relatively small force applied to the load in any direction roughly parallel to the surface. This mode allows easily movable motion of the load along the external surface it is pressed against.
  • lever 16 can be rotated to its original position. This rotation causes eccentric cam 22 to be rotated allowing lug 24 to move within lug housing 12.
  • the force on pivotable ball 30 from the external surface 34 due to the force of the load on device 10 will cause lug 24 to slide inside device 10, leaving lower edge 33 of lug housing 12 to become the primary contact point with external surface 34.
  • the load will revert to its stable stationary mode.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Legs For Furniture In General (AREA)

Abstract

L'invention concerne un dispositif de roulette sphérique rétractable qui comprend un logement de fixation, une bille pivotante, qui est montée dans le logement de fixation, une pluralité de roulements à billes, qui sont contenus dans le logement de fixation et entrent en contact avec la bille pivotante pour permettre sa rotation à faible frottement, et un mécanisme de mouvement qui permet l'extension et la rétraction de la bille pivotante à partir du logement de fixation.
PCT/IL2018/050227 2017-03-01 2018-02-28 Roulette sphérique rétractable Ceased WO2018158770A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL250854 2017-03-01
IL250854A IL250854A0 (en) 2017-03-01 2017-03-01 Foot with recoil ball

Publications (1)

Publication Number Publication Date
WO2018158770A1 true WO2018158770A1 (fr) 2018-09-07

Family

ID=58669490

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL2018/050227 Ceased WO2018158770A1 (fr) 2017-03-01 2018-02-28 Roulette sphérique rétractable

Country Status (2)

Country Link
IL (1) IL250854A0 (fr)
WO (1) WO2018158770A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022158273A (ja) * 2021-04-01 2022-10-17 株式会社ユーエイ キャスター構造体
JP2023083904A (ja) * 2021-12-06 2023-06-16 ホクデン工業株式会社 移動型支持台

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2767420A (en) * 1953-02-04 1956-10-23 Frank J Riccio Spring caster for furniture
JPH09226310A (ja) * 1996-01-09 1997-09-02 France Bed Co Ltd キャスタ装置
US20060112514A1 (en) * 2002-07-30 2006-06-01 Rolf Libakken Roller/foot device castor
US20080229545A1 (en) * 2007-03-19 2008-09-25 Jean-Bernard Duvert Bed immobilization system integrated into chassis feet
US20160339742A1 (en) * 2014-02-06 2016-11-24 Wheel.Me As Rolling device, a piece of furniture comprising a rolling device and a use of the rolling device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2767420A (en) * 1953-02-04 1956-10-23 Frank J Riccio Spring caster for furniture
JPH09226310A (ja) * 1996-01-09 1997-09-02 France Bed Co Ltd キャスタ装置
US20060112514A1 (en) * 2002-07-30 2006-06-01 Rolf Libakken Roller/foot device castor
US20080229545A1 (en) * 2007-03-19 2008-09-25 Jean-Bernard Duvert Bed immobilization system integrated into chassis feet
US20160339742A1 (en) * 2014-02-06 2016-11-24 Wheel.Me As Rolling device, a piece of furniture comprising a rolling device and a use of the rolling device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022158273A (ja) * 2021-04-01 2022-10-17 株式会社ユーエイ キャスター構造体
JP7648141B2 (ja) 2021-04-01 2025-03-18 株式会社ユーエイ キャスター構造体
JP2023083904A (ja) * 2021-12-06 2023-06-16 ホクデン工業株式会社 移動型支持台
JP7699815B2 (ja) 2021-12-06 2025-06-30 ホクデン工業株式会社 移動型支持台

Also Published As

Publication number Publication date
IL250854A0 (en) 2017-04-30

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