Positioning device of a dual direction cable reel

A positioning device of a dual direction cable reel is disclosed. The cable reel comprises a top cover, a pad, a reeling disc top cover, a reeling disc, a lead wire, a spring, a bottom cover and positioning member, characterized in that the reeling disc and the positioning element mounted at the outer side of the bottom cover alternately interact to achieve a positioning function, wherein the positioning element includes a peg and a pulling spring and the peg is pivotally mounted to the peg at the outer edge of the bottom cover, and the rear direction is a pulling spring to provide correct direction, and can swing in accordance with the operational rails at the bottom section of the reeling disc to provide an alternate engaging and disengaging swinging action.

BACKGROUND OF THE INVENTION

(a) Technical Field of the Invention

The present invention relates to positioning device, and in particular, positioning device of a cable reel for cable retraction.

(b) Description of the Prior Art

Conventionally, the extended cable used in computer is either folded or simply clustered around the PC. This will cause a safety in transmission and the quality of transmission. Thus, in order to obtain highest quality of transmission and highest efficiency of transmission, it is important that the coiled cable or transmission cable should be properly coiled or handled.

FIGS. 10 and 11show a conventional cable reel A10including a front cover A1, a spring A2, a sliding seat A3, a transmission cable A4, a positioning bead A5and a rear cover A6. The spring A2retracts the transmission cable A4and a positioning mechanism is a steel bead A5to position the cable A4. In order to allow the positioning of the steel bead A5, the bottom section of the sliding seat A3is provided with a plurality of steel bead rail A31so that the steel bead A5could be adapted onto the rail A31. However, the design of the rail is difficult and the assembly of the components is troublesome. Further, if the gap of the rail A31is too large, or damaged, it posses its functionality. As a result, conventional cable reel A10sometimes disengaged and could not be positioned. Conventional cable reel provides one time cable retraction and it could not have multiple stage cable retraction. Accordingly, it is an object of the present invention to provide a positioning device of a dual direction cable reel, which overcomes the above drawbacks and short comings.

SUMMARY OF THE INVENTION

Accordingly, it is an object of the present invention to provide a positioning device of a dual-direction cable reel having a top cover, a pad, a reeling disc top cover, a reeling disc, a lead wire, a spring, a bottom cover and positioning member, characterized in that the reeling disc and the positioning element mounted at the outer side of the bottom cover alternately interact to achieve a positioning function, wherein the positioning element includes a peg and a pulling spring and the peg is pivotally mounted to the peg at the outer edge of the bottom cover, and the rear direction is a pulling spring to provide correct direction, and can swing in accordance with the operational rails at the bottom section of the reeling disc to provide an alternate engaging and disengaging swinging action, and the functional rails include a pushing section, a second pushing section, a direction-rotating section, an engaging slot and a stopping leading face, wherein the pushing section is a protruded section of the rail, allowing the peg to be pushed at a larger angle so that the peg will fully disengage from engaging mechanism, a second pushing section positioned at the rear direction of the pushing section so that the peg is again pushed to a larger angle to disengage from the engaging mechanism; a direction-rotating section is a recessed section at the rail allowing the peg to be reversed to an engaging corner awaiting reverse rotation to have an engaging mechanism; an engaging slot which is mounted at the rear direction of the pushing section which allows the peg after reverse rotation to be engaged; and the sloping leading face is positioned on the rail to lead the peg into the engaging slot or the pushing section and the peg to implement exact engaging or disengaging mechanism.

A further object of the present invention is to provide a positioning device of a dual direction cable reel, which allow an appropriate length being retracted or extended to be positioned.

Yet a further object of the present invention is to provide a positioning device of a dual direction cable reel, wherein the extension or retraction of cable can be achieved by one action or by multiple-stage.

Still another object of the present invention is to provide a positioning device of a dual direction cable reel, wherein the positioning of cable at an appropriate length is accurate.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Referring toFIGS. 1,2and3, there is shown a positioning device of a dual direction cable reel comprising a top cover1, a pad2, a reeling disc top cover3, a reeling disc4, a coiled cable5, a spring6, a bottom cover7, and a positioning member8. The center of the spring6is connected to the engaging slot12of the center shaft11of the top cover1. The outer end61of the spring6is engaged with the engaging slot41of the reeling disc4. When the reeling disc4rotates clockwise or anti-clockwise, the spring6within the reeling disc4will either become taut or loosen. The tautness of the spring6provides a retraction force to the cable reel.

A clipping plate42is provided to the edge wall of the reeling disc4and the coiled cable5is led via the corresponding slit421. The coiled cable5is led to the outer edge of the reeling disc4, and the middle section of the coiled cable5is guided along the clipping plate42and the opening422to wind onto the reeling disc4. An upper and lower frame position divide the coiled cable5.

In accordance with the present invention, as shown inFIG. 2, the positioning member8includes a peg81and a pulling spring82, and the peg81is pivotally mounted to a positioning peg71at the outer side of the inner edge of the bottom cover7. The pulling spring82is pulled to keep the peg81at a correct direction.

As shown inFIG. 4, the bottom section of the reeling disc4is provided with a plurality of functional rails43which include a pushing section431, a second pushing section431-1, a direction-changing section432, an engaging slot433and a sloping leading face434. As shown inFIG. 4, the peg81has a large angle inclined upward, following the direction of rotation and will not generate engaging action. The peg81has a coiled cable5being pulled out from a related position of the peg81.

As shown inFIG. 5, when the cable reel is loosened, the spring6restores its power and the reeling disc4rotates in a counter clockwise. At this instance, the peg81is led to the engaging slot433and the cable reel has a positioning function. In particular, the engaging positioning is tangential to the bottom cover peg71, the peg81, and the peg81is fully engaged without swinging.

Referring toFIG. 6, when the peg81is loosened, the engaged cable reel is pulled and the reeling disc4rotates in a reverse direction. The corresponding peg81moves along the leading face434into the pushing section431so that the peg81is rapidly pushed. As shown inFIG. 7, the second pushing section431-1causes the peg81to form a large angle to enter the range of the direction-rotating section432. As shown inFIG. 8, at this instance, the cable reel is at a loosening status, and therefore, the coiled wire5retracted back at one retraction of the spring.

As shown inFIG. 9, when the retraction is to be subsequently made, before the coiled cable5is retracted, the coiled cable5is pulled once again, and the coiled cable5rotates in a reverse direction about the reeling disc4, and at this instance the peg81being limited by the direction-rotating section432to reverse the direction of the peg, the peg81is at a status shown inFIGS. 4 and 5, which shall be engaged by the engaging slot433if it rotates in a reverse direction.