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Umbrella rib structure

a rib structure and umbrella technology, applied in the direction of walking sticks, etc., can solve the problems of increasing the cost of screws or bolts, increasing the assembly steps, and /i>loosening or being lost, so as to save manufacture steps and costs

Inactive Publication Date: 2007-02-15
CHUANG CHUN I
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0005] An umbrella rib structure serves long life and save manufacture steps and costs.

Problems solved by technology

However, the requirement of the pivot connection adds the costs for screws or bolts 3a, and increases the assembly steps, so the connection of the hinge tab 51a does.
After the long term use of the umbrella, the screws or bolts 3a may loosen or be lost and the hinge tab 51a may be broke or damaged.
The service life of the conventional umbrella cannot be prolonged.

Method used

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Examples

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Embodiment Construction

[0021] Referring to FIG. 2, an umbrella rib structure includes a central post 1, a plurality of main ribs 2 surrounding the central post 1, a sleeve 3 fitted to and slidably moving along the central post 1, and a plurality of sub ribs 4. The central post 1 has a handle section 11, a top section 12 opposite to the handle section 11, an intermediate section 13 connected to the handle section 11 and the top section 12, a first button 14 disposed on the intermediate section 13 of the central post 1 and next to the handle section 11, a lower stop point 17 disposed on the intermediate section 13 of the central post 1 and beneath the first button 14, a second button 15 disposed on the intermediate section 13 of the central post 1 and next to the top section 12, and an upper stop point 16 disposing disposed on the intermediate section 13 of the central post 1 and above the second button 15.

[0022] Referring to FIGS. 2 and 3, the top section 12 has a secure ring portion 121, which has an upp...

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PUM

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Abstract

An umbrella rib structure includes a central post, a plurality of main ribs surrounding the central post and pivoted to a top section of the central post, a sleeve fitted the central post for slidable movement, and a plurality of sub ribs. Each of the main ribs includes an orientation portion, which has two parallel erected walls extending therefrom and two elongated slots formed through the two parallel erected walls respectively. Each of the sub ribs connects to the respective one of the main ribs and the sleeve, and includes a T-shaped conjunction, which has a support portion and a transverse bar connected to the support portion and latched with the two elongated slot. Whereby the transverse bar of the T-shaped conjunction of each sub rib can move slidably along the two elongated slots of the respective main rib, so that each sub rib connects with the respective main rib.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a technique for an umbrella, and more particularly to a rib assembly for an umbrella. [0003] 2. Background of the Invention [0004] Umbrellas are easy and practical to use for sheltering from the rain, and therefore they have long been important commodities in every day life of humans. A conventional umbrella rib assembly at least includes a plurality of main ribs 1a, and a plurality of sub ribs 2a pivoted to the respective main ribs la via the screws or bolts 3a, in FIG. 1. An opposite end 21a of a respective one of the sub ribs 2a connects to a hinge tab 51a of a sleeve 5a fitted with a central post 4a. Besides, a skin cloth (not shown) is covered on the main ribs 1a for protecting the user beneath from sun and rain while the main ribs 1a are lifted. When the sleeve 5a is pushed upwardly, the sub ribs 2a are pushed outwardly and the main ribs 1a are lifted consequently. However, the...

Claims

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Application Information

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IPC IPC(8): A45B25/00
CPCA45B25/06A45B25/02
Inventor CHUANG, CHUN-I
Owner CHUANG CHUN I