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公开(公告)号：US5248007A
公开(公告)日：1993-09-28
申请号：US604652
申请日：1990-11-01
CPC分类号： A61G5/061 , A61G5/066 , A61G2203/14 , A61G2203/42 , A61G2203/44 , A61G5/107 , A61G5/1072 , A61G5/1075 , Y10S180/907 , Y10S280/10
摘要： An electronic control system for a stair climbing vehicle, such as a wheelchair is disclosed. Front and back sensors are provided for detecting a stairway or slope. The electronic control system determines from the sensor data whether the slope has an acceptable incline for traversing. If it is not acceptable, the vehicle will be prevented from entering onto the stairway or slope. A seat for a user is tilted in accordance with electronic controls to keep the user approximately vertical with respect to gravity as the vehicle traverses the stairs. The allowed operation of the vehicle is controlled via parameters which can be changed by removable memory which configures the vehicle for a particular user or group of users.
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公开(公告)号：US5123495A
公开(公告)日：1992-06-23
申请号：US440054
申请日：1989-11-21
CPC分类号： A61G5/061 , A61G5/066 , B62D55/075 , B66B9/08 , A61G2203/42 , A61G2203/44 , A61G5/107 , A61G5/1075 , Y10S180/907 , Y10S280/10 , Y10S297/04
摘要： The present invention provides a sensor for detecting the angle of an incline, such as a staircase, before it is reached by the wheelchair. A control signal is provided to a motor for tilting the seat to cause the seat to be tilted to a predetermined minimum safe angle before the wheelchair reaches the staircase. The minimum safe angle is an angle of tilt at which the wheelchair will not roll over if the tilting mechanism should fail to completely rotate the seat to a horizontal position and as the stairs are descended. The minimum safe angle is determined by the position of the center of gravity of the wheelchair which is affected by the users weight. If the seat does not achieve this minimum tilt, the wheelchair is prevented from going over the stairs.
摘要翻译： 本发明提供了一种用于在轮椅到达之前检测诸如楼梯的倾斜角度的传感器。 控制信号被提供给电动机，用于倾斜座椅，以使座椅在轮椅到达楼梯之前倾斜到预定的最小安全角度。 如果倾斜机构不能将座椅完全旋转到水平位置和楼梯下降，则最小安全角度是轮椅不会翻转的倾斜角度。 最小安全角度由轮椅的重心位置决定，受到用户重量的影响。 如果座椅没有达到这个最小倾角，轮椅就不会超过楼梯。
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3.发明授权
公开(公告)号：US5033000A
公开(公告)日：1991-07-16
申请号：US204455
申请日：1988-06-09
CPC分类号： H02P5/68 , B60L11/1805 , Y02T10/642 , Y02T10/7005 , Y02T10/7258 , Y10S180/907
摘要： A motorized personal transport vehicle (PTV) with a removable, programmable memory which contains both a key code to enable only an authorized user to operate the PTV and contains constants for use in an algorithm which operates the PTV in accordance with a prescription for that particular user's needs. Control signals from an input, such as a joystick, are modified by the algorithm in accordance with the prescription for a particular user. This prescription is stored in the programmable memory and loaded into the computer when the memory is inserted. The key code in the memory can allow various levels of access, with access for a particular user, a particular group, physician access and technician access. In a preferred embodiment, an electrically erasable programamble read only memory (EEPROM) is used as the memory key. Two processors are used, a first control processor for operating the algorithm and controlling the PTV motors and a second command processor for controlling a display panel, receiving the inputs and modifying the inputs in accordance with a prescription. The modifications performed in the command processor are the filtering of the input signals and the control of acceleration and deceleration. A display has an icon in the shape of a wheelchair. The status of the PTV for its operating modes is indicated by different elements of the icon which light up to indicate a particular status. For instance, a pair of downward directed eyes indicate that the ultrasonic drop off sensors are active.
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4.发明授权
公开(公告)号：US4671369A
公开(公告)日：1987-06-09
申请号：US782678
申请日：1985-10-01
IPC分类号： A61G5/06 , B62D55/075 , B62D55/04
CPC分类号： A61G5/061 , A61G5/066 , B62D55/075 , A61G5/042 , A61G5/1075 , Y10S180/907
摘要： A stair-climbing wheelchair having wheels defining a first wheel base and a pair of endless, flexible tracks providing a second wheel base, there being a motor-driven structure for moving the tracks into and out of ground-engaging positions. A first pivotal arm is pivotally mounted on the wheelchair near the front end thereof. The first arm is coupled to a fluid piston and cylinder assembly which actuates and cushions the pivotal movement of the arm as the wheelchair moves from a horizontal position to an inclined position, such as moving from the top of a stairway to the slope of the stairway as the wheelchair moves down the stairway. Similarly, a second arm coupled with a fluid piston and cylinder assembly is coupled to the wheelchair to cushion the movement of the wheelchair and its occupant as they move from an inclined position to a generally horizontal position, such as at the top of a stairway.
摘要翻译： 具有限定第一轮底座的轮子和提供第二轮底座的一对环形柔性轨道的楼梯轮椅，具有用于将轨道移入和离开地面接合位置的马达驱动结构。 第一枢转臂在其前端附近枢转地安装在轮椅上。 第一臂联接到流体活塞和气缸组件，当轮椅从水平位置移动到倾斜位置时，例如从楼梯的顶部移动到楼梯的斜坡，致动和缓冲臂的枢转运动 当轮椅在楼梯上移动时。 类似地，与流体活塞和气缸组件联接的第二臂联接到轮椅以缓冲轮椅及其乘客在从倾斜位置移动到大致水平位置（例如在楼梯顶部）时的运动。
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公开(公告)号：US4915184A
公开(公告)日：1990-04-10
申请号：US205404
申请日：1988-06-10
申请人： Baxter R. Watkins
发明人： Baxter R. Watkins
CPC分类号： A61G5/061 , A61G5/066 , B62D55/075 , B66B9/08 , A61G2203/42 , A61G2203/44 , A61G5/107 , A61G5/1075 , Y10S180/907 , Y10S280/10 , Y10S297/04
摘要： A latch for each of a pair of cushioning arms, respectively, of a stair-climbing wheelchiar. The latch for each arm includes a first member coupled to the arm and a second member coupled to a fixed support of the wheelchair, with the second member being coupled to the armature of a solenoid which is energized to unlatch the arm from latched relationship with the support when it is desired to use the arm for cushioning purposes. An ultrasonic transducer coupled to the wheelchair adjacent to each latch, respectively, provides signals to energize the respecting latch solenoid when the arm is to be unlatched. To latch each arm, the adjacent edge margins of the two members are bevelled so that, during upward movement of the arm, such as by movement of the wheelchair from an inclined position to a horizontal position, the members are spread apart and a first spring biases the two members back together in coupled relationship to each other. When the latch solenoid is energized, the second member is moved away from the first member to allow a second spring to pull the arm down and into an unlatched position. A limit switch senses when each arm is latched.
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公开(公告)号：US4674584A
公开(公告)日：1987-06-23
申请号：US782741
申请日：1985-10-01
申请人： Baxter R. Watkins
发明人： Baxter R. Watkins
IPC分类号： B62D55/075 , A61G5/06 , B62B5/02 , B62B9/02
CPC分类号： A61G5/061 , A61G5/066 , A61G5/042 , A61G5/1075 , Y10S180/907 , Y10S280/10
摘要： A stair-climbing wheelchair having a sensor at the front end thereof for sensing the presence of a stair step or an inclined ramp. The sensor emits signals which reflect from a surface and to a receptor in the sensor, the receptor being coupled to a microprocessor which determines not only the linear distance traveled by the wheelchair in a forward direction, but also the height of a stair step. Thus, when the tracks are down, a microprocessor associated with the sensor will shut off the drive motors to the tracks if the slope of the stairway is too great when the tracks are down. In such a case, the wheelchair backs away from the stairway and does not go down it. If the slope is less than a predetermined value, such as 30.degree.-35.degree., the wheelchair can move down the stairway in the normal fashion.
摘要翻译： 在其前端具有传感器的楼梯轮椅，用于感测台阶或斜坡的存在。 传感器发射从传感器的表面和接收器反射的信号，该接收器耦合到微处理器，其不仅确定了轮椅在向前方向上行进的线性距离，而且确定了阶梯台阶的高度。 因此，当轨道下降时，如果轨道下降时楼梯的斜率太大，则与传感器相关联的微处理器将关闭驱动马达到轨道。 在这种情况下，轮椅离开楼梯，不会掉下来。 如果坡度小于30°-35°的预定值，则轮椅可以以正常方式沿着楼梯向下移动。
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