IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0320314
(1994-10-11)
|
우선권정보 |
DK-0000483 (1992-04-10) |
발명자
/ 주소 |
- Rnne Gert Steen (Kokkedal DKX) Bech Mogens Ilsted (Birkerd DKX)
|
출원인 / 주소 |
- Gemo 1991 ApS (Horsholm DKX 03)
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인용정보 |
피인용 횟수 :
20 인용 특허 :
4 |
초록
▼
A chassis, particularly for carrying a wheelchair with pivotal seat (S), fitted with ground-engaging wheels with at least one driven from a drive device through a drive transmission and with at least one steerably suspended and connected to a steering motor receiving steering signals for steering th
A chassis, particularly for carrying a wheelchair with pivotal seat (S), fitted with ground-engaging wheels with at least one driven from a drive device through a drive transmission and with at least one steerably suspended and connected to a steering motor receiving steering signals for steering the chassis bearing while driving from a steering panel comprising steering control devices (STY) is described, whereby all steerably wheels (2R) are drive device driven and steerably suspended each being pivotal about a vertical steering axis (2S, STF) geometrically maintained within or at a vertical plane comprising the wheel axis (2RAKS). By means of a between the steering axes (2S) arranged and these mechanically connecting steering transmission system (STT) including a herethrough for the pivoting of said steering axes (2S, STF) connected steering driving device rotating the axes, and through the same direction of rotation, each steering axis (2S, STF) is arranged able to pivot all said wheels about their steering axes (2S, STAKS, STF), i.e. through mainly equally sized pivoting angles independently of the bearing of the seat or dependently being correlated therewith. A drive device can directly or through a drive transmission system (RTT, RTAKS) with the same direction of rotation simultaneously rotate all wheels (2R). A steering system hereto, mainly of electronic kind, is described.
대표청구항
▼
A wheeled chassis including a drive motor for driving a plurality of ground-engaging wheels, the wheeled chassis having at least one of the wheels driven by the drive motor through a drive transmission, and having at least one of the wheels for steering of a driving course of the chassis mounted on
A wheeled chassis including a drive motor for driving a plurality of ground-engaging wheels, the wheeled chassis having at least one of the wheels driven by the drive motor through a drive transmission, and having at least one of the wheels for steering of a driving course of the chassis mounted on the chassis through a steerable support which is steerable by means of at least one steering motor connected to the steerable support which receives steering signals from a steering panel having steering control devices, and all steerable wheels are driven by the drive motor, the driven ground-engaging wheels are pivoted about a vertical steering axis geometrically maintained relative to a vertical plane comprising an axis of the at least one steerable wheel, and a steering transmission system providing the pivoting of steering axes simultaneously and in a same direction of rotation of this pivoting, each steering axis pivoting an individual wheel of all the driven ground-engaging wheels about the individual steering axes through substantially equal pivoting angles with the driven ground-engaging wheels connected directly, or through a drive transmission system, to the drive motor for being rotated all simultaneously, through equal units of time in only one direction of rotation through substantially equal angles of rotation about the drive axes of the ground-engaging wheels, the wheeled chassis further comprising support means to support a seat or holding means for fixation and holding of objects to be transported, a first angle encoder arranged between the wheeled chassis and the ground-engaging wheels outputting a first encoder signal dependent on the angular size of a current bearing of a drive direction of the ground-engaging wheels in relation to the wheeled chassis, and a second angle encoder outputting a second encoder signal dependent on an angular position of one of the seat or the holding means in relation to the wheeled chassis, a steering panel signal outputting a steering panel signal angularly dependent on a relative direction of a wanted directional bearing of driving in relation to the seat or the holding means, and outputting a control signal carrying information about a selected wanted drive velocity, and a device for handling the outputted first and second encoder and steering panel signals comprising signal adders and signal subtracters for providing from each individual angle encoder a difference signal in relation to an initial encoder signal issued as a reference representing a common initial direction of orientation of steering, the difference signal representing a difference between the first encoder signal and the second encoder signal, means for providing double of a sum of the difference signal and including the steering panel signal, inclusive of a sine value forming device forming a sine value and a resulting signal is connectable, as steering signal for the steering drive motor serving, for steering of an orientation of the ground-engaging wheels in relation to the chassis, and means for multiplying a cosine value formed from the difference signal responsive to a drive situation selectable factor responsive to the steering panel signal and being connectable as a control signal to regulate activation and velocity of the drive motor for the driving of the ground-engaging wheels.
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