The present invention relates to a hand cart easily elevated on a stair. A conventional hand cart cannot be smoothly and continuously elevated up and down stairs since a driving wheel is locked into a jaw of the stairs when elevated up and down, thereby causing a worker to exert much force. Moreover, when the conventional hand cart is moved down the stairs, the worker needs to pull the hand cart down, thereby causing the worker to exert much force. At this time, if the worker does not properly pull the hand cart down, the hand cart is rapidly moved down such that there is a concern that an item being delivered will be damaged or the worker can fall. To resolve this problem, according to the present invention, a driving wheel driven on flat ground is installed not to protrude over a stair driving belt, thereby preventing the driving wheel from being locked into a stair when the hand cart is elevated up and down on the stair. Furthermore, when the hand cart is moved down on the stair, an auto braking rod is moved downward along the stair driving belt to pressurize the stair driving belt, thereby maintaining braking force. The hand cart comprises a body frame (10), a pair of mounting brackets (20), a drive wheel (30), a lower belt pulley (40), an upper belt pulley (50) and the stair driving belt (60).

    본 발명은 계단의 승하강이 용이한 핸드카트에 관한 것이다. 종래에 개시된 핸드카트는 계단을 오르내릴 때 상기 주행바퀴가 계단의 턱에 걸리게 됨으로써 원활하고 연속적인 승하강이 이루어질 수 없을 뿐만 아니라 작업자의 힘이 많이 들고, 계단을 내려올 때에는 별도의 제동장치가 없어 작업자가 핸드카트를 잡아당기면서 내려와야만 함으로써 힘이 매우 많이 들며, 상기 핸드카트를 제대로 잡아당기지 않는 경우 급격하게 내려가면서 운반물이 파손되거나 작업자가 낙상할 우려가 큰 실정이다. 본 발명은 이러한 문제점을 해소하기 위한 방안으로 평지를 주행하는 주행바퀴가 계단 주행벨트보다 돌출되지 않게 설치되어 계단의 승하강시 주행바퀴가 계단에 걸리지 않도록 하고, 상기 계단의 하강시 오토 제동봉이 계단 주행벨트를 타고 하향으로 이동하면서 상기 계단 주행벨트를 가압하여 제동력을 유지할 수 있도록 함을 발명의 특징으로 한다.


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    Title :

    HAND CART EASY TO MOVING OF STAIRWAY


    Additional title:

    계단의 승하강이 용이한 핸드카트


    Contributors:
    LEE WOO JOO (author)

    Publication date :

    2016-05-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B62B Von Hand bewegte Fahrzeuge, z.B. Handkarren oder Kinderwagen , HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS / A61G TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS , Transport, persönliche Beförderungsmittel, oder Lagerung besonders ausgebildet für Kranke oder Behinderte / B62D MOTOR VEHICLES , Motorfahrzeuge



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