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Handcart for climbing stairs

A trolley and stair climbing technology, applied in the field of trolleys, can solve problems such as complex structures

Inactive Publication Date: 2004-09-22
约胡姆.比尔马
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the additional guidance of the castors along the track concentric with the axis of the crank mechanism makes this structure very complicated

Method used

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  • Handcart for climbing stairs
  • Handcart for climbing stairs

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Embodiment Construction

[0010] Such as figure 1 It schematically shows a trolley 1 taking a wheelchair as an example, including a caster 3 fixed on a chassis 2 , for clearer illustration, the parts in front of the caster are omitted in the provided side view. The lifting device 4 enabling the trolley 1 to climb stairs comprises a support foot 5 arranged as a double-arm bar, on the lower ground-contacting end of which support foot 5 is mounted support rollers 6 . At the end opposite to the ground contact end there is a support foot guide 7 in the form of a guide connecting rod 8 which is connected on the one hand to the chassis 2 and on the other hand to the upper end of the support foot 5 . Between the ground-contacting end and the upper guiding end of the supporting foot 5 , a connecting rod 9 acts on the supporting foot 5 , the end of the connecting rod 9 opposite to the supporting foot 5 being transversely guided in a connecting rod guide 10 . Guide to the support foot guide 7. According to the...

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Abstract

The invention describes a stair-climbing hand truck (1) with two casters (3) held in a chassis (2) and with a supporting foot (5) which is arranged as a two-arm lever and is guided with its end opposite of the lower touchdown end over the lifting height along a supporting foot guide means (7) and is connected with a crank mechanism (13) between the touchdown end and the upper guided end. In order to provide advantageous sequences of movement it is proposed that the crank mechanism (13) acts upon a connecting rod (9) linked to the supporting foot (5) and that a connecting rod guide means (10) which extends transversally to the supporting foot guide means (7) is provided for the end of the connecting rod (9) which is opposite of the supporting foot (5).

Description

technical field [0001] The invention relates to a trolley for climbing stairs, having two castor wheels held on a chassis and a support foot arranged as a double-arm bar, which is guided along a support foot with the opposite end of its lower ground-contacting end The device is guided over the lift level and is connected to a crank mechanism between the ground contact end and the upper guide end. Background technique [0002] Stair-climbing trolleys such as wheelchairs or trolleys for transporting loads are provided with a lifting device by which the trolley can go up and down stairs step by step. A very good structure of this connection is obtained when the lifting device comprises a liftable and lowerable support foot, which rests on one step and lifts or lowers the chassis of the trolley to the next step depending on the driving direction. steps. In order to ensure that the castors are lifted and can be placed on the next step when moving upwards over the next step, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62B3/00B62B5/02
CPCB62B5/023
Inventor 约胡姆·比尔马
Owner 约胡姆.比尔马
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