Stable umbrella opening and closing structure and automatic opening and closing umbrella

Abstract

A stable umbrella opening and closing structure comprises an umbrella handle and an opening and closing device, the opening and closing device comprises a flexible steel bar, a steel bar driving device and a connecting piece, the steel bar driving device is arranged at the lower end of the umbrella handle, the upper end of the flexible steel bar is connected with the upper end of the umbrella handle, and the lower end of the flexible steel bar is connected with the steel bar driving device; the telescopic connecting piece is provided with a fixing hole for the flexible steel bar to penetrate through, the driving device comprises a motor and a transmission wheel, the motor is connected with the transmission wheel, spiral driving teeth are arranged on the outer circumferential face of the transmission wheel, and the flexible steel bar is provided with inclined strip-shaped holes matched with the spiral driving teeth. Compared with the prior art, the telescopic structure has large transmission force and is firm and compact in structure, and the umbrella handle can be opened and closed more stably. Also disclosed is an automatic opening and closing umbrella, which further comprises umbrella ribs and an umbrella cover, the umbrella ribs are connected with an upper nest and a lower nest, and the umbrella cover is connected to the umbrella ribs. Compared with the prior art, the umbrella can be automatically and stably opened and closed, the structural strength is high, and opening and closing operation is convenient.

Description

technical field [0001] The invention relates to the field of umbrellas, in particular to a stable opening and closing structure of an umbrella and an automatic opening and closing umbrella. Background technique [0002] An umbrella is a tool for shading or sheltering from rain and snow. Umbrellas need both hands to operate when opening and closing, which is very inconvenient to use. Therefore, people have developed an umbrella that can be opened and closed automatically. The existing automatic open and close umbrella mainly drives the umbrella handle to expand and contract automatically through the screw structure or the flexible rack. The rod is stuck, making the lifting of the umbrella handle very unstable. For umbrellas that open and close through flexible racks, since the flexible racks are relatively soft, the flexible racks are easy to bend when the umbrella handle is extended, causing the flexible racks to lose their supporting force instantly, which easily leads to...

AI Technical Summary

Problems solved by technology

Umbrellas need to be operated with both hands when opening and closing, which is very inconvenient to use

Therefore, people have developed an umbrella that can be opened and closed automatically. The existing automatic open and close umbrella mainly drives the umbrella handle to expand and contract automatically through the screw structure or the flexible rack. The rod is stuck, making the umbrella handle very unstable

For umbrellas that open and close through flexible racks, since the flexible racks are relatively soft, the flexible racks are easy to bend when the umbrella handle is extended, causing the flexible racks to lose their supporting force instantly, which easily leads to damage to the flexible racks, and the flexible The transmission part of the rack and the gear is only connected by one or two meshing teeth that are not completely meshed, so that the structure of the transmission part is not strong enough, and the transmission force is small, so the umbrella cannot be opened automatically

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