The invention discloses a wheelchair (10) with two independent driving arms (21, 21'), and the wheelchair (10) comprises a seat (16), two rear large wheels (12, 13) and two front small wheels (14), wherein the small wheels (14) can be freely turned around a vertical axis, and a common frame (11) for holding the listed parts, and the two driving arms (21, 21') are fixed to the frame (11) by means of respective pivot bearings (25) which are fixed at a low position close to the place where the small wheels (14) are attached to the frame (11), and the driving arms (21, 21') extend till a height which is sufficiently high for the person sitting in the wheelchair (10) to hold their upper end portions easily with hands and to move them in forward-backward directions around the respective pivotal bearings, and both of the large wheels (12, 13) are equipped with respective brakes that can be operated by the driving arms (21, 21') or by respective brake handles (42) positioned on the driving arms (21, 21'), and to respective lower sections of the driving arms (21, 21') respective ropes (32, 32') are connected, and the two large wheels (12, 13) comprise respective wheel hubs (30, 30') each equipped with freewheel, and to one side of each wheel hub (30, 30') a respective one of rope drums (31, 31') is attached, the rope drums (31, 31') are each provided with a spring bias, and a winding made of said rope (32, 32') comprising a predetermined number of turns is provided on the mantle of each rope drum (31, 31'), wherein a predetermined displacement length of the pulling of the rope (32, 32') in forward direction results in a given turning of the associated wheel hub (30, 30') in forward direction, and when the rope drum (31, 31') is turned in the other direction the freewheel releases the connection towards the large wheel (12 or 13), and the wheel hub (30, 30') comprises a release mechanism that releases the locking of the freewheel when the large wheel (12 or 13) is moved in backward direction and backward movement gets allowed.
一种具有两个独立驱动臂(21,21')的轮椅(10),包括座位(16)、两个后大轮(12,13)和两个前小轮(14),其中小轮(14)能绕竖直轴自由转动,以及用于保持所列部件的公共框架(11),所述两个驱动臂(21,21')通过相应枢转轴承(25)固定至框架(11),该枢转轴承固定在靠近小轮(14)附接至框架(11)的部位的低位置处,驱动臂(21,21')延伸直至足够高以使坐在轮椅(10)中的人容易地用手保持其上端部分并使其绕相应枢转轴承沿前后方向运动的高度,所述大轮(12,13)均配备有能通过驱动臂(21,21')或通过位于驱动臂(21,21')上的相应制动手柄(42)操作的相应制动器,驱动臂(21,21')的相应下部部段均连接有相应绳索(32,32'),所述两个大轮(12,13)包括各自配备有飞轮的相应轮毂(30,30'),每个轮毂(30,30')的一侧上附接有一个相应卷绳筒(31,31'),每个卷绳筒(31,31')均设置有弹簧偏压件,在每个卷绳筒(31,31')的外罩上设置有由绳索(32,32')制成的包括预定圈数的绕线组,其中,沿向前方向拉动绳索(32,32')预定移位长度导致相关联的轮毂(30,30')沿向前方向的给定转动,当卷绳筒(31,31')沿另一方向转动时,飞轮释放朝向大轮(12或13)的连接,轮毂(30,30')包括释放机构,它当大轮(12或13)沿向后方向移动时释放飞轮的锁定并且向后移动得到允许。
WHEELCHAIR WITH TWO INDEPENDENT DRIVING ARMS
具有两个独立驱动臂的轮椅
2021-08-06
Patent
Electronic Resource
Chinese
IPC: | A61G TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS , Transport, persönliche Beförderungsmittel, oder Lagerung besonders ausgebildet für Kranke oder Behinderte / B62K Fahrräder , CYCLES / B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer |
Wheelchair lifting platform protection arms and wheelchair lifting platform
European Patent Office | 2020
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