Motorized rolling-chair

Abstract

The motorized rolling armchair comprises a motor-transmission assembly (1,2) the output shaft of which (3) extends on either side of the transmission gear (1) and carries at each of its ends a rolling train (4,5). The motor-transmission assembly (1,2) carries a support (6) on which are fastened batteries (7) and which is provided at its front lower end with at least a roller (8). It comprises a light casing (9) on which the seat (10) and the back (11) of the armchair, of synthetic plastic material, are directly injected. Rapid corrections (14,20) are provided to couple and uncouple the casing to the motor-transmission assembly (1,2).

Claims

I claim: 1. Motorized rolling-chair, comprising a motor-transmission assembly, an output shaft of which extends on either side of a transmission gear and comprises at each of its ends a rolling train; the motor-transmission assembly carrying a support on which are fastened batteries and which is provided at its lower front end with at least a roller; a casing on which the seat and the back of the armchair, in synthetic material, are directly injected; and rapid fixing means to couple and uncouple the casing to the motor-transmission assembly, wherein the rapid fixing means of the casing onto the motor-transmission assembly comprise at least one telescopic member fastened to the support by blocks, the ends of this telescopic member being adapted to cooperate with holes provided in the casing.
The present invention relates to motorized rolling-chairs and more particularly to the one permitting not only to displace oneself on a flat surface but also to go up and down staircases, footpasses and also similar obstacles. Now the motorized chairs comprise all a tubular welded frame, generally made out of steel, on which are mounted an electric motor having permanent magnets, of a feeding voltage of 12 Volt generally and its speed variator, the motor being connected to a conventional battery. The transmission from the motor to the wheels or flanges carrying the wheels is realized through a chain and pinion reducer meshing directly on the motor. The tubular welded frame is also used as support and structure for the chair itself in which the user sits. These motorized rolling-chairs or armchairs are heavy, cumbersome and onerous due to their welded construction. The aim of the present invention is to give to the users a rolling-chair or armchair which is handy, less cumbersome, lighter, easily transportable and at lower costs. The motorized rolling-chair according to the invention is characterized by the fact that it comprises a motor-transmission assembly the output shaft of which extends on either side of the transmission box and carries at each of its ends a rolling train; by the fact that the motor-transmission assembly carries a support on which are fixed feeding batteries and which is provided at its front lower end with at least one roller; by the fact that it comprises a light casing on which the seat and the back of the armchair, made out of synthetic material, are directly injected; and by the fact that it comprises rapid fixing means to couple and uncouple the casing to the motor-transmission assembly. The attached drawing shows schematically and by way of example one particular embodiment of the motorized rolling-chair according to the invention. FIG. 1 is a perspective exploded view of the rolling-chair. FIGS. 2 and 3 show details of the fixing of the casing of the chair on the motor-transmission assembly. The main originality of the motorized rolling-chair shown comprises the absence of a frame, particularly of a tubular welded frame. As a matter of fact this rolling-chair comprises a motor-transmission assembly directly connected to the wheels or flanges carrying the wheels, this assembly being ridigly fixed on a support carrying front rollers or rolling-wheels and being provided with rapid and removable fixing means of the casing of the chair comprising its seat as well as handgrips for the manual displacement of the chair. The motor-transmission assembly comprises a gear transmission gear 1 comprising an endless screw and planetary reducer directly meshing with a servo-motor of 24 Volts 2 controlled by a power amplifier. The output shaft 3 of the gear transmission 1 is rigid and receives at each of its ends a flange 4 carrying two or three wheels 5 idly pivoted on shafts fastened with these flanges. Thus the driving assembly of motor, transmission and rolling members forms a compact assembly, which is rigid and relatively light and constitutes itself the frame of the chair. This driving assembly is provided with a support 6 presenting a face receiving batteries 7. The front wheels or rollers 8 of the chair are idly pivoted on shafts which are themselves pivoted idly in the support 6. Finally the support 6 comprises rapid and removable fixing means for the light casing 9 on which are fastened the seat 10 and the back 11 of the chair and comprising grips 12. This casing 9 is made in light metal and comprises honeycombed parts on which the seat and the back of the armchair, made of polyurethane foam, are directly injected. This casing 9 can be realized in two parts, seat and back, which can fit the one onto the other to reduce the size and facilitate its transport. The lower part or skirt of this casing 9 comprises fixing means cooperating with the rapid fixing means of the support 6 permitting thus a coupling or a separation of the casing 9 from the motor-transmission assembly in an easy and rapid manner. The fixing means carried by the support are constituted each by two coaxial shafts 13 mounted slidingly in a tube 14 and tending to be separated the one from the other by means of a spring 15. Each shaft is provided with an actuating member 16 merging from the tube 14 through a slot having the shape of an L. Each shaft 13 slides in a block 17 fixed on the support by means of an attachment. The ends 18 of the shafts 13 are intended to cooperate with the fixing means of the casing 9 to fix the latter removably or the motor-transmission assembly. These fixing means of the casing are constituted by holes 19 merging into a housing 20. The distance separating the internal faces 21 of the fixing means of the casing 9 corresponds to the distance X separating the outside faces of the silentblocks 17. Thus when the shafts 13 are pressed toward each other manually or when the actuating members 16 are introduced into the part of the slot having the shape of an L which is perdendicular to the axis of the tube 13, in such rectracted position the ends 18 of these shafts 13 can then be introduced into the housings 20. Upon liberating the shafts 13, the ends are automatically introduced into the holes 19 and fix the casing onto the motor-transmission assembly. A second set of rapid fixing means 13,18 is provided at the front end of the support 6 and cooperate with a corresponding fixing means 19,21 provided at the frontal portion of the casing 9. The absence of a tubular frame and the removable fixing of the casing onto the motor-transmission assembly enables providing a motorized rolling-chair which is not cumbersome, light and easily transportable. The flanges 4 provided with the wheels 5 enable the passing of obstacles such as foodsteps or steps. It is even possible to go up staircases with such a chair which has thus a particular application for the transport of persons in airports and their boarding of planes up the normal ladders. When the motor is stopped one can displace the chair by pushing it by its grips 12. It is evident that in variants the flanges 4 and the wheels 5 can be replaced by normal wheels in which case the motorized driving is done on a relatively flat ground. In a general manner the wheels or the flanges carrying the wheels are directly mounted on the ends of the shaft 3 of the transmission or gear box 1 emerging from either side of it and extending under the part of the support 6 receiving the batteries 7. Because of the rigidity of this shaft 3 and its short length it is not necessary to provide bearings on the support 6 which is of a simply and low cost construction. Other rapid fixing systems of the casing 9 provided with the seat 10,11 can be forseen for example clip fasteners or rapid closure means through an excentric. However these fixing means are preferably designed so as to be acutated without tools. The motor-transmission assembly constitutes thus simultaneously the driving assembly and replaces completely a frame, so that it thus itself ensures, with the light support 6 which is fixed to it through screws and bolts for example, the rigidity and stability of the complete motorized rolling-chair. The motor 2 is controlled by a servo-amplifier of great power giving control pulses to the motor at different speeds while ensuring a practically constant torque permitting stabilizing and regulating the speed of rotation of the flanges 4 whatever the applied load is particularly during the going up or down of steps or staircases. Finally the conception of the polyurethane foam seat which is directly injected onto a portion of the casing having a honeycomb shape, the seat and the back can be separated by simple engagement and permit the provision of a light casing, which is rigid, less cumbersome since it can be easily dismantled in two parts and thus is easily transportable, but which however presents a comfortable chair. Furthermore, the back and the seat being monolithic with the corresponding part of the casing they do not need any mechanical fixing thus simplifying further the rolling-chair. Therefore through its design, this motorized rolling-chair is light, rigid, easily dismantled for its transport and necessitates for its manufacture and assembly only a minimum of operations. Therefore it comprises a rolling-chair which is easy to use and has a much lower cost than all the existing rolling-chairs. It is evident that the shaft 3 of the transmission gear can be a hollow shaft so as to permit providing this chair with a more complete system of motorisation enabling at will the driving in rotation either of the flange 4 or of the wheels 5 pivoted on this flange 4. This is obtained as described in detail in Swiss patent application No. 1836/89. A control shaft, actuated by a manual member slides axially in the end of each hollow shaft 3 and controls the axial displacements of a toothed pinion meshing either with a toothed crown carried by the flange 4 or with toothed wheels fastened to the wheels 5. Thus when the flange 4 is driven in rotation the rolling-chair is adapted to go up or down steps or staircases wherear when the individual wheels 5 are driven the chair can displace itself on a flat surface, resting on two wheels 5 of each flange 4. Finally if the control shaft of the pinion is hollow, one can incorporate in it a control rod, actuated by a fork, actuating a brake acting on the wheels 5 pivoated on the flange. Thus this motorized rolling-chair satisfies all security and performance requirements.

Description

Topics

Download Full PDF Version (Non-Commercial Use)

Patent Citations (4)

    Publication numberPublication dateAssigneeTitle
    DE-3411489-A1October 04, 1984Aisin SeikiEinrichtung zum betreiben eines medizinischen geraets
    US-3952822-AApril 27, 1976Stiftelsen Teknisk Hjalp At Handikappade PermobilstiftelsenElectrically powered wheel-chair for indoor and outdoor use
    US-4560022-ADecember 24, 1985Kassai KabushikikaishaElectrically driven children's vehicle
    US-4798255-AJanuary 17, 1989Wu Donald P HFour-wheeled T-handlebar invalid carriage

NO-Patent Citations (0)

    Title

Cited By (111)

    Publication numberPublication dateAssigneeTitle
    US-6435535-B1August 20, 2002Deka Products Limited PartnershipTrailer for balancing vehicle
    US-6965206-B2November 15, 2005Deka Products Limited PartnershipMethod and system for fail-safe motor operation
    US-9529365-B2December 27, 2016Deka Products Limited PartnershipControl of a personal transporter based on user position
    US-7157875-B2January 02, 2007Deka Products Limited PartnershipMethod and system for fail-safe motor operation
    US-8322477-B2December 04, 2012Deka Products Limited PartnershipMotion control of a transporter
    US-7407175-B2August 05, 2008Deka Products Limited PartnershipMultiple-passenger transporter
    US-6615938-B2September 09, 2003Deka Products Limited PartnershipMechanism for stair climbing in a cluster-wheel vehicle
    EP-1074237-A2February 07, 2001Himolla Polstermöbel GmbHFauteuil
    US-6538411-B1March 25, 2003Deka Products Limited PartnershipDeceleration control of a personal transporter
    US-9168966-B2October 27, 2015Segway, Inc.Apparatus and method for control of a vehicle
    US-9400502-B2July 26, 2016Deka Products Limited PartnershipControl of a personal transporter based on user position
    US-6343664-B2February 05, 2002Deka Products Limited PartnershipOperating modes for stair climbing in a cluster-wheel vehicle
    US-6868931-B2March 22, 2005Deka Products Limited PartnershipSpeed limiting for a balancing transporter accounting for variations in system capability
    US-6874591-B2April 05, 2005Deka Products Limited PartnershipSpeed limiting for a balancing transporter
    US-9429955-B2August 30, 2016Deka Products Limited PartnershipControl of a personal transporter based on user position
    US-6443251-B1September 03, 2002Deka Products Limited PartnershipMethods for stair climbing in a cluster-wheel vehicle
    US-6050356-AApril 18, 2000Honda Giken Kogyo Kabushiki KaishaElectrically driven wheelchair
    US-6129165-AOctober 10, 2000Pride Mobility Products, CorporationCurb-climbing power wheelchair
    US-8453768-B2June 04, 2013Deka Products Limited PartnershipControl of a transporter based on attitude
    US-2004011573-A1January 22, 2004Kamen Dean L., Burl Amsbury, Field J. Douglas, Langenfeld Christopher C., Morrell John B., Pompa Jonathan B., Stevens Jon M., Lund Jeremy B.Guided control of a transporter
    US-6311794-B1November 06, 2001Deka Products Limited PartneshipSystem and method for stair climbing in a cluster-wheel vehicle
    US-7900725-B2March 08, 2011Segway Inc.Vehicle control by pitch modulation
    US-2009055033-A1February 26, 2009Segway Inc.Apparatus and methods for fault detection at vehicle startup
    US-6302230-B1October 16, 2001Deka Products Limited PartnershipPersonal mobility vehicles and methods
    US-6789640-B1September 14, 2004Deka Products Limited PartnershipYaw control for a personal transporter
    US-7210544-B2May 01, 2007Deka Products Limited PartnershipControl of a transporter based on attitude
    US-2006249313-A1November 09, 2006Deka Products Limited PartnershipMotion control of a transporter
    US-2006137888-A1June 29, 2006Martin Soika, Andreas Hanke, Uwe Nemetz, Michael KunzPower tool
    US-2009099762-A1April 16, 2009Segway Inc.Vehicle Control by Pitch Modulation
    US-7174976-B2February 13, 2007Deka Products Limited PartnershipDynamically stable transporter controlled by lean
    US-7023330-B2April 04, 2006Deka Products Limited PartnershipTransporter oscillating alarm
    US-2006061460-A1March 23, 2006Dean Kamen, Ambrogi Robert R, Field J Douglas, Burl AmsburyTransporter oscillating alarm
    US-7479872-B2January 20, 2009Deka Products Limited PartnershipTransporter oscillating alarm
    US-6799649-B2October 05, 2004Deka Products Limited PartnershipControl of a balancing personal vehicle
    US-6827163-B2December 07, 2004Deka Products Limited PartnershipNon-linear control of a balancing vehicle
    US-2004054634-A1March 18, 2004Tak Seung HoSale method and system employing product price varying dependent upon valid date of product
    US-9452097-B2September 27, 2016Clive LuElectric mobility vehicle
    US-6779621-B2August 24, 2004Deka Products Limited PartnershipRiderless stabilization of a balancing transporter
    US-2004007399-A1January 15, 2004Heinzmann John David, Morrell John B., Robinson David W.Method and device for battery load sharing
    US-6543564-B1April 08, 2003Deka Products Limited PartnershipBalancing personal vehicle
    US-8069676-B2December 06, 2011Deka Products Limited PartnershipWater vapor distillation apparatus, method and system
    US-8282790-B2October 09, 2012Deka Products Limited PartnershipLiquid pumps with hermetically sealed motor rotors
    US-7979179-B2July 12, 2011Segway Inc.Apparatus and method for pitch state estimation for a vehicle
    US-9442491-B2September 13, 2016Deka Products Limited PartnershipControl of a personal transporter based on user position
    US-5592997-AJanuary 14, 1997Ball; Richard D.Pediatric wheelchair
    US-6815919-B2November 09, 2004Deka Products Limited PartnershipAccelerated startup for a balancing personal vehicle
    US-9411339-B2August 09, 2016Deka Products Limited PartnershipControl of a personal transporter based on user position
    US-2010222994-A1September 02, 2010Segway Inc.Enhanced Control of a Transporter
    US-2003205419-A1November 06, 2003Kamen Dean L., Field J. Douglas, Morrell John B.Riderless stabilization of a balancing transporter
    US-2004055804-A1March 25, 2004Kamen Dean L., Ambrogi Robert R., Field J. Douglas, Burl AmsburyTransporter oscillating alarm
    US-6796396-B2September 28, 2004Deka Products Limited PartnershipPersonal transporter
    US-6367817-B1April 09, 2002Deka Products Limited PartnershipPersonal mobility vehicles and methods
    US-2006159577-A1July 20, 2006Martin Soika, Klaus-Dieter ArichDrive mechanism for a power tool
    US-8359877-B2January 29, 2013Deka Products Limited PartnershipWater vending apparatus
    US-7740099-B2June 22, 2010Segway Inc.Enhanced control of a transporter
    US-6540250-B1April 01, 2003Clifford D. PetersonHeight adjustable wheelchair
    EP-1074237-B1February 02, 2005Himolla Polstermöbel GmbHFauteuil
    US-2006011398-A1January 19, 2006Kamen Dean L, Field J D, Heinzmann John DMultiple-passenger transporter
    US-7182166-B2February 27, 2007Deka Products Limited PartnershipFootrest tuck mechanism
    US-6651766-B2November 25, 2003Deka Products Limited PartnershipPersonal mobility vehicles and methods
    US-7275607-B2October 02, 2007Deka Products Limited PartnershipControl of a personal transporter based on user position
    US-9442492-B2September 13, 2016Deka Products Limited PartnershipControl of a personal transporter based on user position
    US-2004007425-A1January 15, 2004Kamen Dean L., Heinzmann John DavidSelf-balancing ladder and camera dolly
    US-7962256-B2June 14, 2011Segway Inc.Speed limiting in electric vehicles
    US-6186252-B1February 13, 2001Pride Mobility Products, CorporationFoldable midwheel drive power chair
    US-9442486-B2September 13, 2016Deka Products Limited PartnershipControl of a personal transporter based on user position
    WO-2007047444-A3July 26, 2007Mobilife, Steven D Dufresne, Christopher Dario KeidlWheelchair having unitized chassis
    WO-2007047444-A2April 26, 2007MobilifeWheelchair having unitized chassis
    US-6969079-B2November 29, 2005Deka Products Limited PartnershipMultiple-passenger transporter
    US-7690452-B2April 06, 2010Deka Products Limited PartnershipVehicle control by pitch modulation
    US-6443250-B1September 03, 2002Deka Products Limited PartnershipControl of a balancing personal vehicle
    US-9459627-B2October 04, 2016Deka Products Limited PartershipControl of a personal transporter based on user position
    US-8467941-B2June 18, 2013Segway, Inc.Apparatus and method for control of a vehicle
    US-9545963-B2January 17, 2017DEKA Products Limited Partnership LLPControl of a transporter based on attitude
    US-2014137527-A1May 22, 2014Yanmar Co., Ltd.Mobile Electric Work Machine
    US-6929080-B2August 16, 2005Deka Products Limited PartnershipBalancing personal vehicle
    US-7546889-B2June 16, 2009Deka Products Limited PartnershipGuided control of a transporter
    US-2004024207-A1February 05, 2004Cornelis Bakker8'4-'3-(5Fluoro-1h-indol-3yl)propyl!-1-piperazinyl!-2-methyl-2h-1,4-benzoxazin-3(4h)-one methanesulfonate with high affinity for the dopamine d2 receptor and the seotonix reuptake site
    US-2006108165-A1May 25, 2006Dean Kamen, Ambrogi Robert R, Flynn Catharine N, Kerwin John MVehicle control by pitch modulation
    US-9411336-B2August 09, 2016Deka Products Limited PartnershipControl of a personal transporter based on user position
    US-2008161990-A1July 03, 2008Segway Inc.Apparatus and Method for Pitch State Estimation for a Vehicle
    US-6915878-B2July 12, 2005Deka Products Limited PartnershipSelf-balancing ladder and camera dolly
    US-7690447-B2April 06, 2010Deka Products Limited PartnershipDynamic balancing vehicle with a seat
    US-9188984-B2November 17, 2015Deka Products Limited PartnershipControl of a personal transporter based on user position
    US-6581714-B1June 24, 2003Deka Products Limited PartnershipSteering control of a personal transporter
    US-2005121866-A1June 09, 2005Deka Products Limited PartnershipControl of a personal transporter based on user position
    US-2004069543-A1April 15, 2004Kamen Dean L., Ambrogi Robert R., Field J. Douglas, Heinzmann John David, Heinzmann Richard Kurt, Langenfeld Christopher C.Motion control of a transporter
    US-6866107-B2March 15, 2005Deka Products Limited PartnershipMethod and device for battery load sharing
    US-2004118622-A1June 24, 2004Morrell John B., Robinson David W.Speed limiting for a balancing transporter accounting for variations in system capability
    US-7757794-B2July 20, 2010Segway, Inc.Vehicle control by pitch modulation
    US-2005211477-A1September 29, 2005Deka Products Limited PartnershipFootrest tuck mechanism
    US-7370713-B1May 13, 2008Deka Products Limited PartnershipPersonal mobility vehicles and methods
    US-7000933-B2February 21, 2006Deka Products Limited PartnershipMethod for attaching a carrier to a balancing transporter
    US-2006108156-A1May 25, 2006Heinzmann John D, Robinson David W, Stevens Jon M, Field J D, Lund Jeremy BVehicle control by pitch modulation
    US-2007187166-A1August 16, 2007Deka Products Limited PartnershipControl of a Transporter Based on Attitude
    US-2010114468-A1May 06, 2010Segway Inc.Apparatus and method for control of a vehicle
    US-8511105-B2August 20, 2013Deka Products Limited PartnershipWater vending apparatus
    US-8006511-B2August 30, 2011Deka Products Limited PartnershipWater vapor distillation apparatus, method and system
    US-7004271-B1February 28, 2006Deka Products Limited PartnershipDynamic balancing vehicle with a seat
    US-2007084648-A1April 19, 2007MobilifeWheelchair having unitized chassis
    US-7857088-B2December 28, 2010Segway Inc.Enhanced control of a transporter
    US-7090040-B2August 15, 2006Deka Products Limited PartnershipMotion control of a transporter
    US-7469760-B2December 30, 2008Deka Products Limited PartnershipHybrid electric vehicles using a stirling engine
    US-9477228-B2October 25, 2016Segway, Inc.Apparatus and method for control of a vehicle
    US-2006125433-A1June 15, 2006Dean Kamen, Morrell John B, Robinson David W, Reich Ronald K, Heinzmann John D, Lemay Philip, Meyer Steven R, Sachs Jason M, Field J DMethod and system for fail-safe motor operation
    US-2004007398-A1January 15, 2004Burl Amsbury, Field J. Douglas, Kerwin John M., Morrell John B., Pompa Jonathan B.Non-linear control of a balancing vehicle
    US-2004055796-A1March 25, 2004Dean Kamen, Ambrogi Robert R., Field J. Douglas, Heinzmann John David, Heinzmann Richard Kurt, Langenfeld Christopher C.Motion control of a transporter
    US-2005236215-A1October 27, 2005Dean Kamen, Ambrogi Robert R, Field J D, Heinzmann John D, Heinzmann Richard K, Langenfeld Christopher CDynamically stable transporter controlled by lean
    US-2008035395-A1February 14, 2008Deka Products Limited PartnershipDynamic Balancing Vehicle with a Seat
    US-8170780-B2May 01, 2012Segway, Inc.Apparatus and method for control of a vehicle
    US-2003230440-A1December 18, 2003Kamen Dean L., Langenfeld Christopher C., Michael Norris, Sachs Jason MichaelHybrid electric vehicles using a stirling engine