Integrated self-opening and self-closing staircase pull suitcase

By designing an integrated self-opening and self-closing stair climbing trolley case, and using automatic opening and closing skateboards and shock absorption devices, the problem of labor and inconvenience in traditional trolley cases when going up and down stairs is solved, achieving convenient use and protection of the suitcase for different road conditions.

CN112932044BActive Publication Date: 2025-05-30邓应来
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Patent Information

Application Number
CN202110327208.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-03-26
Publication Date
2025-05-30
Estimated Expiration
2041-03-26

AI Technical Summary

Technical Problem

Traditional trolley boxes are laborious and inconvenient when going up and down stairs, especially without shock absorption and buffering devices, which can easily cause damage to suitcases or fragile products inside, and are poor in universality.

Method used

An integrated self-opening and self-closing stair climbing trolley box is designed, using universal wheels, telescopic trolleys, sliders, one-way wheels, elastic devices, shock absorbers, limit links, torsion spring links and inner support components. The automatic opening and closing of the skateboard is achieved through the dual rocker mechanism and shock absorbers, adapting to steps of different slopes, and optimized designs such as shoulder straps and mobile power banks to improve the convenience and comfort of use.

Benefits of technology

It realizes labor-saving push and pulling on smooth road surfaces, adapts to dragging in complex road conditions, reduces the strength and noise when going up and down stairs, protects suitcases and internal items, and has a beautiful appearance and is easy to use.

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Abstract

The present invention discloses an integrated self-opening and self-closing stair-climbing trolley case, which comprises a box body. A universal wheel is arranged at the bottom of the box body. The telescopic pull rod is arranged on one side of the box body. A one-way wheel is arranged at the bottom of the sliding plate. The inner tray is respectively connected to the telescopic pull rod and the box body. The limiting connecting rods on the left and right sides are movably connected to the inner tray through the first connecting rod and are movably connected to the sliding plate through the second connecting rod. The torsion spring connecting rods on the left and right sides are movably connected to the inner tray through the third connecting rod and are movably connected to the sliding plate through the fourth connecting rod. A double-rocker mechanism is formed among the limiting connecting rod, the box body, the torsion spring connecting rod and the sliding plate. One end of the elastic device is connected to the inner tray, and the other end is connected to the fourth connecting rod. The shock-absorbing device is arranged between the sliding plate and the inner tray. In the present invention, the sliding plate can self-open and self-close to assist in climbing stairs, and is provided with shock-absorbing and buffering devices, which not only avoid damage to the box body itself or fragile items inside, but also greatly reduce the noise and vibration during stair climbing.
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