Packaging reel with an optical fiber unwinding device
View Patent ↗A cable packaging and unwinding device. The device enables the exact length of cable necessary for connecting two connection points to be unwound easily and quickly and a residual surplus length of cable to be stowed in a protected area, to prevent the cable from being subjected to any twisting or crushing and to obtain a reliable connection between the two connection points.
1. A cable packaging and unwinding device ( 100 ; 300 ) comprising a spool ( 110 ) in which are formed two winding areas (Z 1 , Z 2 ) for two continuous sections (S 1 , S 2 ) of a cable and at least one stowage area ( 130 ; 340 , 360 ) for at least one end of one of the two cable sections, wherein the spool ( 110 ) takes the form of a drum ( 119 ) having two lateral flanges ( 111 , 112 ) and an interior flange ( 113 ), said interior flange ( 113 ) defining the two winding areas (Z 1 , Z 2 ) and including an opening ( 115 ) forming a passage for the cable between said two winding areas, and said two lateral flanges ( 111 , 112 ) having a notch ( 116 ; 117 ) forming a passage for each cable section (S 1 , S 2 ) from the stowage area ( 130 ; 340 , 360 ) to the exterior of the spool ( 110 ), and in that the spool ( 110 ) is mounted to rotate about an axis (A) inside a substantially cylindrical casing ( 150 ) in which are formed openings ( 154 , 155 ) forming a passage for each cable section (S 1 , S 2 ).
2. A device according to claim 1 , wherein a groove ( 120 ) is formed in the thickness of each lateral flange ( 111 , 112 ) and in line with a notch ( 116 ; 117 ) to enable the end of a cable section to be retained in the stowage area ( 130 ) during rotation of the spool ( 110 ).
3. A device according to claim 1 wherein a recess ( 114 ) in the thickness of each lateral flange ( 111 , 112 ) is adapted to receive a fitting serving as a handle for rotating the spool ( 110 ).
4. A device according to claim 1 , wherein the stowage area ( 340 , 360 ) comprises a cylindrical support ( 341 , 361 ) in which there is formed a stowage cavity ( 342 ) and to which are fixed a guiding cam ( 343 , 363 ) and retaining means ( 370 , 166 ).
5. A device according to claim 4 , wherein the guiding cam ( 343 , 363 ) is rotatable about the axis (A) and entrains with it a cylindrical support ( 341 , 361 ).
6. A device according to claim 5 wherein a recess ( 344 ) in the thickness of the guiding cam ( 343 , 363 ) is adapted to receive a fitting serving as a handle for rotating the cam.
7. A device according to claim 5 , wherein two stowage areas ( 340 , 360 ) are disposed head-to-tail inside the drum ( 119 ) and the retaining means take the form of a screw ( 370 ) disposed along the rotation axis (A) and adapted, when tightened, to fasten the two stowage areas to the spool ( 110 ) and, when loosened, to allow the two stowage areas ( 340 , 360 ) to rotate independently of each other.
8. A device according to claim 5 , wherein the retaining means of each stowage area ( 340 , 360 ) include at least an elastic tongue ( 161 ) fastened to the cylindrical support ( 341 ) adapted to interengage in a groove ( 162 ) on the internal wall of the drum ( 119 ).
9. A device according to claim 5 , wherein a ratchet system comprising a pawl ( 166 ) fastened to the cylindrical support ( 341 ) and in bearing engagement with notches ( 165 ) on the internal wall of the drum ( 119 ) allows rotation of the stowage areas ( 340 , 360 ) in one direction and prevents rotation thereof in the opposite direction.
10. A device according to claim 4 wherein the guiding cam ( 343 , 363 ) has a thickness at least equal to the diameter of the cable and an inclined lateral wall that prevents the end of a cable section escaping from the stowage cavity ( 342 ).
11. A device according to claim 1 , wherein the notches ( 116 , 117 ) in the lateral flanges have inclined flats ( 118 ).
12. A device according to claim 1 , wherein the substantially cylindrical casing ( 150 ) has on its internal wall ( 157 ) abutments ( 151 , 152 , 153 ) for retaining the spool ( 110 ) in its casing.