Automatic umbrella opening mechanism and automatic opening and closing umbrella

Abstract

An automatic umbrella opening mechanism comprises an umbrella handle and an opening and closing device, the opening and closing device comprises a flexible steel bar, a telescopic connecting piece and a steel bar driving device, the steel bar driving device is arranged at the lower end of the umbrella handle, the flexible steel bar and the telescopic connecting piece are arranged in the umbrella handle and connected with the umbrella handle, the telescopic connecting piece comprises connecting single bodies, each connecting single body is provided with a fixing hole, the connecting single bodies are connected through elastic ropes, the steel bar driving device comprises a motor and a transmission wheel, the motor is connected with the transmission wheel, the transmission wheel is provided with spiral driving teeth, and the flexible steel bar is provided with inclined strip-shaped holes matched with the spiral driving teeth. Compared with the prior art, the umbrella opening mechanism 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 telescopic umbrella can be stably opened and closed, the structural strength is high, and opening and closing operation is more convenient.

Description

technical field [0001] The invention relates to the technical field of umbrellas, in particular to an automatic umbrella opening mechanism 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 retractable umbrella mainly drives the umbrella handle to automatically expand and contract through a screw structure or a flexible rack. Stuck, making the umbrella handle lifting 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...

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 retractable umbrella mainly drives the umbrella handle to automatically expand and contract through a screw structure or a flexible rack. 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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