Wire reel structure

Abstract

A wire reel structure includes a casing body, a reel unit and a signal line unit. The casing body includes a central pillar, and the reel unit is contained in the casing body. The signal line unit includes first and second signal lines, and the first signal line is passed into reel unit and wound at an external side of the reel unit. The second signal line is connected to the first signal line and wound at an external side of the central pillar. The first and second signal lines are signal lines with different deformation curves, and the second signal line has a greater flexibility than the flexibility of the first signal line, such that the second signal line will not be folded reversely when wire sections in the casing body are rotated.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a wire reel, in particular to a wire reel structure for coiling signal lines made of different materials with different flexibilities.BACKGROUND OF THE INVENTION[0002]To manage long signal lines, a wire reel mechanism is generally provided for automatically coiling data, audio / video and control signal transmission lines such as USB signal transmission lines of computer peripherals, and such wire reel mechanism usually includes a reel unit driven by a coil spring for its rotation, and the coil spring produces an elastic torque to drive the reel unit to rotate and coil the signal line automatically. In the process of pulling out the signal line, the reel unit keeps on rotating, such that the coil spring produces an elastic torque in a reverse direction, and when the signal line is no longer pulled, the coil spring will start driving the reel unit to coil the signal line automatically. The wire reel mechanism generally comes ...

AI Technical Summary

Benefits of technology

[0008]Therefore, it is a primary objective of the present invention to provide a wire reel structure that improves the using life of a wire reel and fits applications of different devices and equipments.

[0010]The casing body includes a central pillar for containing the reel unit therein. The signal line unit includes a first signal line and a second signal line, and the first signal line is passed to the reel unit and wound at an external side of the reel unit. The second signal line is connected to the first signal line and wound at an external side of the central pillar, wherein the first signal line and the second signal line are signal lines with different deformation curves, and the second signal line has a greater flexibility than the flexibility of the first signal line.

[0011]The advantages of the present invention are listed as follows: Since the flexibility of the second signal line is greater than the flexibility of the first signal line, so that when the second signal line is rotated at the wire section of the casing body, a reverse folding does not occur easily, and the invention can overcome the shortcoming of the conventional wire reel whose using life is limited to 1000 to 3000 times of releasing or winding a wire, and the invention also can improve the using life of the wire reel and fit applications for various different devices (including earphones and computer peripherals).

Problems solved by technology

With this drawback, the aforementioned wire reel is generally used in stereo devices such as earphones and voice boxes only, but its use is not suitable for computer peripherals.

However, this conventional wire reel has the drawback that the cable 11′ may be broken easily due to the design of the wire reel structure, such that the using life is reduced.

Since the cable 11 may be folded in a reverse direction, it is necessary to unfold the cable with an angle of 180 degrees every time of releasing or rewinding the wire reel, and such reverse folding may damage a conductor in the cable 11′ or may even break the conductor of the cable.

Thus, the wire reel of this sort has a major drawback of its short using life limited to approximately 1000 to 3000 times of winding only.

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