초록 ▼

Disclosed is a power assist anti-tip wheel system for invalid carriage including at least one connecting support, at least one assist anti-tip wheel, and at least one power driving means. The connecting support is fixedly or detachably connected at one end to a front or a rear side of the invalid ca

Disclosed is a power assist anti-tip wheel system for invalid carriage including at least one connecting support, at least one assist anti-tip wheel, and at least one power driving means. The connecting support is fixedly or detachably connected at one end to a front or a rear side of the invalid carriage. The anti-tip wheel is associated with the connecting support so that it is located in front of or behind the invalid carriage. The power driving means is also associated with the connecting support to drive the anti-tip wheel to rotate when the invalid carriage travels onto a slope or passes a recess or a bulge on a road surface and two drive wheels thereof become suspended and idling. The power driving means can be automatically actuated via a sensing circuit or be manually actuated via a push button. When the anti-tip wheel is driven by the power driving means to rotate, it provides an assistant power source to the invalid carriage and help the same to keep moving forward when the drive wheels of the invalid carriage are idling.

대표청구항 ▼

[ What is claimed is:] [1.] A power assist anti-tip wheel system for invalid carriage, comprising at least one connecting support having one end connected to a front or a rear side of a main frame of said invalid carriage, at least one assist anti-tip wheel connected to another end of said at least

[ What is claimed is:] [1.] A power assist anti-tip wheel system for invalid carriage, comprising at least one connecting support having one end connected to a front or a rear side of a main frame of said invalid carriage, at least one assist anti-tip wheel connected to another end of said at least on connecting support, and at least one power driving means mounted on said connecting supports to associate with said at least on assist anti-tip wheel, whereby when said invalid carriage passes irregularities on a road surface and causes two drive wheels of said invalid carriage to become suspended and idling, said at least one power driving means can be actuated to rotate said at least one assist anti-tip wheel to help said invalid carriage to contact with the road surface to operate in a normal manner again.