Cable retractor

Patent metadata

Field	Value
Publication number	US-9272876-B2
Application number	US-201314135576-A
Country	US
Kind code	B2
Filing date	Dec 20, 2013
Priority date	Mar 13, 2013
Publication date	Mar 1, 2016
Grant date	Mar 1, 2016

Abstract

A cable retractor for releasing and retracting an application cable. a cable retractor comprises a base; a spool having sides, the spool rotatably secured to the base to permit the application cable to be wrapped around the spool; a mandrel disposed concentrically within the spool, the mandrel being rotationally secured to the base to prevent axial rotation of the mandrel relative to the base; and the mandrel further having a recessed groove running lengthwise, and an internal cable having an outer connector and inner connector, the outer connector being connected through the spool to one end of the application cable, and the inner connector being exposed at one end of the mandrel from within the recessed groove.

First claim

What is claimed is:

1. A cable retractor for releasing and retracting an application cable ( 1 ) comprising:
a base ( 9 );
a spool ( 10 ) having sides, said spool ( 10 ) rotatably secured to said base ( 9 ) to permit said application cable ( 1 ) to be wrapped around said spool ( 10 );
a mandrel ( 7 ) disposed concentrically within said spool ( 10 ), said mandrel ( 7 ) being rotationally secured to said base ( 9 ) to prevent axial rotation of said mandrel ( 7 ) relative to said base ( 9 ); and said mandrel ( 7 ) further having a recessed groove running lengthwise,
an internal cable ( 2 ) having an outer connector ( 3 ) and inner connector ( 4 ), said outer connector ( 3 ) being connected through said spool ( 10 ) to one end of said application cable ( 1 ), and said inner connector ( 4 ) being exposed at one end of said mandrel ( 7 ) from within said recessed groove
a manual switch ( 20 );
a payout sensor ( 24 );
a retraction sensor ( 25 );
a retraction motor ( 13 ) fixably mounted relative to said base ( 9 );
a controller ( 19 ) configured to detect changes in said manual switch ( 20 ), said payout sensor ( 24 ), and said retraction sensor ( 25 ), causes said motor to turn in a specified direction to assist in expelling or retracting said application cable ( 1 );

a worm gear ( 26 ) disposed slidably over a worm shaft ( 27 ), said worm gear ( 26 ) being permitted to travel axially along a plurality of spline ( 28 ) grooves, said worm gear ( 26 ) further having a flange plates ( 30 ) abutting each side;
a payout spring ( 32 ) and a retraction spring ( 33 ) opposing each side of said flange plates ( 30 );
a spool gear ( 31 ) secured to spool ( 10 ) for translating motion to said worm gear ( 26 );
a first compression plate ( 36 ) for securing said outer end said retraction spring ( 33 ) on said worm shaft ( 27 ); and
a second compression plate ( 36 ) for securing an outer end of said payout spring ( 32 ) on said worm shaft ( 27 ).

2. The cable retractor of claim 1 , wherein said internal cable ( 2 ) is a ribbon cable.

3. The cable retractor of claim 2 , wherein:
said payout sensor ( 24 ) is configured to cause a controller ( 19 ) to expel said application cable ( 1 );
said retraction sensor ( 25 ) is configured to cause a controller ( 19 ) to retract said application cable ( 1 ); and
said manual switch ( 20 ) is configured to cause a controller ( 19 ) to expel or retract said application cable ( 1 ).

Assignees

• Crestron Electronics Inc
• Crestron Electronics Inc

Inventors

• Draganovic Krunoslav
• Feldstein George

Classifications

• B65H2701/34

  electric cords or electric power cables · CPC title

• B65H75/4486 Primary

  Electric motors · CPC title

• B65H75/4484

  Electronic arrangements or adaptations for controlling the winding or unwinding process, e.g. with sensors · CPC title

• B65H75/4449

  Arrangements or adaptations to avoid movable contacts or rotary couplings, e.g. by the use of an expansion chamber for a lenght of the cord or hose · CPC title