A four-wheel walking aid device with automatic wheel column conversion

Abstract

The invention discloses a four-wheel walking aid device with automatic conversion of wheel columns, which comprises a walker frame body. The walker frame body is mainly composed of a front bracket and a rear bracket. There are front universal wheels, and a seat is installed on the middle part of the walker frame. The seat is rotatably connected with the walker frame to form a rotating seat structure. The upper end of the wheel frame is rotationally connected with the walker frame; the connection point between the upper end of the wheel frame and the walker frame is the center of rotation of the wheel frame, and the distance between the center of rotation of the wheel frame and the lower end of the walker frame The distance is smaller than the radius of gyration of the traveling wheels to the center of rotation of the wheel frame; a linkage mechanism is provided between the center of rotation of the seat and the center of rotation of the wheel frame. The invention enables the seat to be linked with the walking wheels, which improves the safety and reliability of use. At the same time, the linked arrangement of the seat and the walking wheels will not affect the arrangement of the handbrake device, which is convenient for speed control during walking.

Description

technical field [0001] The invention belongs to the technical field of walking aids, and in particular relates to a four-wheel walking aid with automatic conversion of wheel columns. Background technique [0002] The structure of a common four-wheel walker comprises a handbrake, a seat cushion, a braking point, a rear wheel and a front universal wheel, etc., as shown in the utility model patent disclosure of the notification number CN2496446Y. At ordinary times, the elderly can push the walker to assist in walking. When braking is required in an emergency, the handbrake can be pressed, and the force is transmitted to the braking point to brake the rear wheels. When you need to sit down and have a rest, you need to pull down the handbrake, so that the rear wheels are in the braking state for a long time, so as to ensure the stability of the walker when sitting down and prevent falling. [0003] This kind of four-wheel walker requires the elderly to manually lock the wheels t...

AI Technical Summary

Problems solved by technology

[0008] The technical schemes of the above-mentioned announcement numbers CN202724206U and CN201798883U adopt self-weight brakes, and the technical scheme of announcement number CN102247262B adopts infrared induction brakes, which can improve a certain degree of safety and reliability compared with hand brakes, but there will still be slipping defects during use: if Self-weight brakes are in the non-braking state when the user is not riding, and the user may slip the walker during the sitting process, and it is difficult to determine the self-weight parameters for determining the brake; for example, infrared induction brakes are easily misunderstood by debris. Triggered, cannot effectively perceive the distance between the walker user and the walker, and cannot accurately judge normal or abnormal use

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