US20050126612A1

US20050126612A1 - Adjustable fixture for an umbrella

Info

Publication number: US20050126612A1
Application number: US10/733,299
Authority: US
Inventors: Chao-Lin Chen
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-12-12
Filing date: 2003-12-12
Publication date: 2005-06-16

Abstract

An adjustable fixture for an umbrella includes a sleeve, a cam handle, and a block incorporated with an inner rod and an outer rod of the umbrella. The outer rod is inserted within the sleeve while the inner rod is inserted within the outer rod. The sleeve comprises a connecting wall bossing out from one side of the sleeve and holes on the same side exposing from the connecting wall. The cram handle has a cram at one end pivotally connected to the connecting wall by a pin. The block is located between the cram of the cram handle and the holes of the sleeve. Springs are located between the block and the outer rod. The block is urged by the springs towards the cam of the cam handle. When pushing down the cam handle, the cam urges the block to tighten the inner rod firmly.

Description

FIELD OF THE INVENTION

This invention relates to an adjustable fixture for an umbrella, and more particularly to an adjustable fixture to control the umbrella to extend or retract in length in an easy and safe manner.

BACKGROUND OF THE INVENTION

A conventional umbrella with a length adjustable fixture uses a cam to control the extension and retraction of the umbrella. However, when in a loose status, the sliding of the umbrella still engages with the cam. This deteriorates the material gradually and eventually is going to loose its function.
In view of this, the inventor has derived the present invention to improve the shortcomings

SUMMARY OF THE INVENTION

It is the primary object of the present invention to provide an adjustable fixture for an umbrella, which eliminates the friction when in a released status.
It is another object of the present invention to provide an adjustable fixture for an umbrella, which is easy to operate.
It is a further object of the present invention to provide an adjustable fixture for an umbrella, which can last longer and is cost effectiveness.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of the present invention;
FIG. 2 is a cross-sectional view of the present invention; and
FIG. 3 is a cross-sectional view depicting the present invention in a released status.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

An adjustable fixture for an umbrella of the present invention comprises a sleeve 1, a cam handle 2, and a block 3 incorporated with an outer rod 4 and an inner rod 5 of the umbrella.
The outer rod 4, as shown in FIG. 1, is inserted within the sleeve 1 while the inner rod 5 is inserted within the outer rod 4 in a slidable manner. The sleeve 1 has a connecting wall 11 bossing out from one side thereof and holes 12 on the same side exposing from the connecting wall 11. The cam handle 2 has a cam 21 at one end. The cam 21 is pivotally connected to connecting wall 1 1 of the sleeve 1 by a pin 22. The block 3 is located between the cam 21 of the cam handle 2 and the holes 12 of the sleeve 1. Springs 31 are located between the block 3 and the outer rod 4. The block 3 is urged by the springs 31 towards the cam 21 of the cam handle 2.
When pushing down the cam handle 2, as shown in FIG. 2, the cam 21 urges the block 3 to tighten the inner rod 5 and to restrict the inner rod 5 from sliding within the outer rod 4. On the contrary, when the cam handle 2 is lifted upward, the locking situation is released, the springs 31 urge the block 3 towards the cam 21, thus the inner rod 5 is free to move within the outer rod 4.

Claims

1. An adjustable fixture for an umbrella comprising a sleeve, a cam handle, and a block incorporated with an inner rod and an outer rod of the umbrella, said inner rod being inserted within said outer rod in a slidable manner, and said outer rod being inserted within said sleeve, and characterized by:

said sleeve comprising a connecting wall bossing out from one side of said sleeve and holes on the same side exposing from said connecting wall;

said cam handle comprising a cam at one end, said cam being pivotally connected to said connecting wall by a pin;

said block being located between said cam of said cam handle and said holes of said sleeve, springs being located between said block and said outer rod, said block being urged by said springs towards said cam of said cam handle; said cam handle controlling said cam to urge said block to tighten said inner rod in a secure position.