Positioning structure for a reel

Abstract

An improved positioning structure for a reel is disclosed. The structure includes two corresponding external caps, a reeling disc, a leading cord, a spiral spring and a positioning ball, characterized in that the leading cord is respectively surrounding onto the external edge face of the upper frame position and the lower frame position, the cord in respective frame position are in opposite loosening and tightening state, and the upper frame is the pulling cord and the lower frame is the ready-to-rotate cord, and the cord is restricted by the positioning structure; the external cap has an inner edge face mounted with a multifunctional rail allowing the steel ball to position the cord in corresponding to counterclockwise rotation and clockwise rotation, urging the positioning ball to loosen and tighten the cord alternately, and the positioning ball is arranged at the sliding slot within the inner slot of the edge face of the reeling disc.

Description

BACKGROUND OF THE INVENTION[0001](a) Technical Field of the Invention[0002]The present invention relates to positioning structure for a reel, and in particular, a positioning structure which reduces noise generated by high speed rotation of the rail.[0003](b) Description of the Prior Art[0004]Conventional type of positioning a cord within a reel is the application of steel beads. As shown in FIGS. 5 and 6, the reel A10 comprises a front cover A1, a spiral spring A2, a sliding seat A3, a transmission cord A4, a positioning steel bead A5 and a rear cover A6. In this conventional structure, the sliding seat A3 contains the spiral spring to restore the transmission cord A4 to its original position. The steel bead A5 slides within the sliding seat A3 so as to position the cord A4. The bottom section of the sliding seat A3 has a passage A31 so that the steel bead A5 could roll, engage and disengage within the passage A31. Thus when the sliding seat A3 is pulled at a high speed and high sp...

AI Technical Summary

Benefits of technology

[0006]Yet another object of the present invention is to provide an improved positioning structure for a reel, wherein the multifunctional rail is provided at the inner edge face of the outer cover and is fixed, avoiding the generation of noise as a result of the gap.

[0007]Still yet another object of the present invention is to provide an improved positioning structure for a reel, wherein the positioning steel ball mounted at the edge face of the reeling disc will reduce the frictional force generated by the edge face of the reeling face, thus the stress on the spiral spring is reduced.

Problems solved by technology

Under this condition, the steel bead passage A31 under a high speed rotation, does not comply the requirements of stable engaging and sliding, thus extreme gap and error are formed.

Relatively, design on rail is difficult and high precision is needed.

Thus the cost of producing the rail is high.

In addition, when there is a friction and the error on the gap is too large, the dislocation of the steel bead A5 is expected and thus, the function of positioning is lost.

As a result, frequent dislocation of cord in the reel is common occurred and the longevity is lost.

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