WO2017142517A1 - Entraînement auto-pivotant de simulateurs de mouvement de forme sphérique - Google Patents

Entraînement auto-pivotant de simulateurs de mouvement de forme sphérique Download PDF

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Publication number
WO2017142517A1
WO2017142517A1 PCT/US2016/018150 US2016018150W WO2017142517A1 WO 2017142517 A1 WO2017142517 A1 WO 2017142517A1 US 2016018150 W US2016018150 W US 2016018150W WO 2017142517 A1 WO2017142517 A1 WO 2017142517A1
Authority
WO
WIPO (PCT)
Prior art keywords
drive shaft
gear
shaft
rotation
motor
Prior art date
Application number
PCT/US2016/018150
Other languages
English (en)
Inventor
George W. Batten, Jr.
Original Assignee
Batten George W Jr
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 Batten George W Jr filed Critical Batten George W Jr
Priority to PCT/US2016/018150 priority Critical patent/WO2017142517A1/fr
Publication of WO2017142517A1 publication Critical patent/WO2017142517A1/fr

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B9/00—Simulators for teaching or training purposes
    • G09B9/02—Simulators for teaching or training purposes for teaching control of vehicles or other craft
    • G09B9/08—Simulators for teaching or training purposes for teaching control of vehicles or other craft for teaching control of aircraft, e.g. Link trainer
    • G09B9/12—Motion systems for aircraft simulators

Definitions

  • This invention relates generally to mechanisms for driving motion simulators such as those of virtual reality systems, flight simulators, and interactive game seats. It is a simple mechanism for rotating a simulator with an exterior shell which is part or all of a sphere. It preferably would be used with a second such mechanism to drive a spherical surface in any variable rotation.
  • U. S . patents 5,490,784 and 6,629,896 show motion simulators which have spherical exterior shells and a support arrangement that includes rotatable drive wheels. In both of these, rotation of the sphere is driven by the drive wheels in frictional contact with the spherical surface. The drive wheel is mounted so the axis of wheel rotation, can be rotated about the line perpendicular to the sphere's surface at the point at which the wheel contacts the surface. Both patents use one motor for rotation of the drive wheel, and another motor for rotation of the wheel's axis.
  • Patent 5,490,784 shows an arrangement with differentially-coupled double wheels driven by a single motor, plus a second motor for rotation of the wheel axis; the rotations of the wheels are not independent.
  • the present invention has a common-axis double-wheel arrangement with each wheel driven by a separate motor.
  • the wheels are mounted on a pivoting frame which freely rotates about a line perpendicular to the axis of the wheels.
  • the two wheels are in frictional contact with the driven surface, so controlled differential rotation of the wheels is used to set the direction of the axis of the wheels.
  • the surface can be part or all of a sphere, but the invention can be applied to other surfaces, including, but not limited to cylinders, ellipsoids, and planes. In the following, the term "sphere" will be used to mean any such surface.
  • the sphere rotates when the two wheels of the invention turn in the same direction.
  • the arrangement is symmetrical, and the two motors work together to drive the rotation of the sphere.
  • two small motors rather than one larger motor can be used for sphere rotation; an additional motor for moving of the wheel axis is not necessary.
  • the invention includes an angle encoder measuring the direction of wheel action.
  • the active electronics of the angle encoder are mounted on the rigidly-mounted frame.
  • FIG. 1 shows one embodiment of the invention in two views.
  • One view is a half- sectional view showing the exterior appearance of the invention, and the gear arrangement viewed in one direction; the other is an entire cross-section viewed in another direction.
  • the cross-sectional part of the half- sectional view is broken in three places to simplify display of gear and wheel positions. The broken-out parts are rotated to correspond with the angled part of section line A-A.
  • FIG. 2 displays a wheel. It shows the ring gear and the clearance slot for the spur gear which meshes with the ring gear.
  • Fig. 3 is a cross-section view of another embodiment of the invention. This embodiment does not require the shaft driven by one motor to pass through the shaft of the other motor.
  • Fig. 1 shows two views of the invention, each of the views showing parts of the mechanism.
  • the view on the right side is a cross- sectional view at the plane midway between the wheels.
  • the view on the left side is a half- sectional view taken along section line A- A shown in the right view.
  • Mounting plate 76 rigidly attaches to and supports fixed frame 80.
  • Fig. 3 which shows an embodiment different from that of Fig. 1, displays only part of fixed frame 80.
  • the fixed frame is the rigid mount for the bidirectional electric motors 100 and 101, and their associated gear boxes 102 and 103, respectively.
  • the active electronics of angle encoder 75 is rigidly attached to fixed frame 80. That frame is closed by outside end cap 82 (not shown in Fig. 3).
  • Flange 81 (not shown in Fig. 3) is for clamping fixed frame 80 to mounting plate 76.
  • Thrust bearing 73 and clearance gap 74 provide for mounting the pivoting frame 50 so it can rotate about the centerline of fixed frame 80.
  • the pivoting frame is closed by inside end cap 83.
  • the drive wheels 52 and 53 with wheel bearings 55 are mounted on axles 56 rigidly fixed to pivoting frame 50.
  • the axle and wheel bearings can be seen in the cross section of wheel 53.
  • Each wheel has a tire 54 for contacting the spherical surface 84.
  • each wheel has a ring gear 57.
  • Each wheel also has a clearance slot 59 for the spur gear and shaft end.
  • outer longitudinal drive shaft 65 there is a concentric pair of drive shafts: outer longitudinal drive shaft 65, and inner longitudinal drive shaft 64. These are coincident with the axis of rotation of pivoting frame 50, and they pass from the interior of fixed frame 80 into the interior of pivoting frame 50. Each of the motors rotates one of these drive shafts.
  • the drive train for wheel 52 has the inner longitudinal drive shaft 64 rigidly affixed to helical gear 66, which meshes with helical gear 62.
  • Shaft 60 is rigidly affixed to both helical gear 62 and a spur gear (not shown). The latter meshes with the ring gear (not shown) rigidly affixed to wheel 52. Therefore, as inner longitudinal drive shaft 64 rotates, all of these elements, including wheel 52, rotate correspondingly.
  • a preferred arrangement is to have the gears arranged so that concentric shafts 64 and 65 rotate in the same direction when wheels 52 and 53 are also rotating in the same direction. This reduces frictional losses between the two concentric shafts during sphere rotation (but not, of course, when the wheel rotation is differential). It requires one pair of helical gears to be right-handed, the other pair to be left-handed.
  • Figs. 1 and 3 show two different arrangements for the motors.
  • the motors are aligned concentrically.
  • the hollow shaft from gearbox 102 on motor 100 is extended to become the outer longitudinal drive shaft 65.
  • the shaft from gearbox 103 on motor 101 passes through hollow shafts associated with motor 100 and gearbox 102, including outer longitudinal drive shaft 65, becoming inner longitudinal drive shaft 64.
  • fixed frame 80 can be cylindrical.
  • the disadvantage is that it requires special motors with hollow shafts.
  • a gear arrangement is used to couple the motors to the drive shafts.
  • Shaft 104 from gearbox 102 on motor 100 is rigidly affixed to spur gear 92.
  • the latter meshes with spur gear 90 which is rigidly affixed to outer longitudinal drive shaft 65.
  • shaft 105 from gearbox 103 on motor 101 is rigidly affixed to spur gear 93.
  • the latter meshes with spur gear 91, which is rigidly affixed to inner longitudinal drive shaft 64.
  • thrust bearings and spacers keep the longitudinal drive shafts in position.
  • Thrust bearings 71 and 72 and associated spacers 68 and 69 inside of pivoting frame 50 prevent downward motion of the longitudinal drive shafts, and provide the force necessary to hold pivoting frame 50 against thrust bearing 73.
  • Spacer 69 has seats for the hub of helical gear 67 and thrust bearing 72; these prevent lateral motion of the outer longitudinal drive shaft.
  • Radial bearing 70 held in place by inside end cap 83 at the upper end of inner longitudinal drive shaft 64 maintains lateral alignment of the shaft at that end.

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Physics & Mathematics (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • General Physics & Mathematics (AREA)
  • Gear Transmission (AREA)

Abstract

L'invention concerne un mécanisme d'entraînement de mouvements d'une surface de forme sphérique, elliptique, plane, ou autre, comprenant une paire de roues motrices montées sur un châssis pivotant librement, chaque roue étant entraînée par son propre moteur bidirectionnel. Les moteurs et l'électronique active d'un codeur d'angle sont montés dans un châssis fixe associé, aucunes bagues collectrices ou autres liaisons tournantes n'étant ainsi nécessaires pour une alimentation et une commande de moteur, ou pour déterminer l'angle de rotation du châssis pivotant. Une commande des moteurs permet une rotation différentielle des deux roues pour effectuer une rotation commandée du châssis pivotant et, par conséquent, de direction de roues. Cela évite l'utilisation d'un moteur séparé pour changer la direction de mouvement de la surface.
PCT/US2016/018150 2016-02-17 2016-02-17 Entraînement auto-pivotant de simulateurs de mouvement de forme sphérique WO2017142517A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2016/018150 WO2017142517A1 (fr) 2016-02-17 2016-02-17 Entraînement auto-pivotant de simulateurs de mouvement de forme sphérique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2016/018150 WO2017142517A1 (fr) 2016-02-17 2016-02-17 Entraînement auto-pivotant de simulateurs de mouvement de forme sphérique

Publications (1)

Publication Number Publication Date
WO2017142517A1 true WO2017142517A1 (fr) 2017-08-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2016/018150 WO2017142517A1 (fr) 2016-02-17 2016-02-17 Entraînement auto-pivotant de simulateurs de mouvement de forme sphérique

Country Status (1)

Country Link
WO (1) WO2017142517A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3882720A (en) * 1973-12-17 1975-05-13 Illinois Tool Works Gear checking machine having a frictionally driven support table and position encoder
US5980256A (en) * 1993-10-29 1999-11-09 Carmein; David E. E. Virtual reality system with enhanced sensory apparatus
US6017276A (en) * 1998-08-25 2000-01-25 Elson; Matthew Location based entertainment device
US6402625B2 (en) * 1999-12-15 2002-06-11 Martin Armstrong Motion linkage apparatus
DE10330993A1 (de) * 2003-07-02 2005-03-31 Mendoza, Adrián Gonzalez de Antrieb für eine Simulatins- und Trainigskugel
US9126121B1 (en) * 2014-02-28 2015-09-08 M. Harris Milam Three-axis ride controlled by smart-tablet app

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3882720A (en) * 1973-12-17 1975-05-13 Illinois Tool Works Gear checking machine having a frictionally driven support table and position encoder
US5980256A (en) * 1993-10-29 1999-11-09 Carmein; David E. E. Virtual reality system with enhanced sensory apparatus
US6017276A (en) * 1998-08-25 2000-01-25 Elson; Matthew Location based entertainment device
US6402625B2 (en) * 1999-12-15 2002-06-11 Martin Armstrong Motion linkage apparatus
DE10330993A1 (de) * 2003-07-02 2005-03-31 Mendoza, Adrián Gonzalez de Antrieb für eine Simulatins- und Trainigskugel
US9126121B1 (en) * 2014-02-28 2015-09-08 M. Harris Milam Three-axis ride controlled by smart-tablet app

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