Cable retractor

摘要

A mechanism for storing a length of cord that includes a first and second pair of pulleys mounted at opposite ends of a frame. An intermediate section of a cord is stored in the frame and has one end of the stored section fixed to the frame, with the other end extending from the frame. The stored cord section is at least partially wound over the pair of pulleys, and one pair of pulleys is slidably mounted for motion toward the other pair of pulleys. A damper is coupled to one of the second pair of pulleys, which engages the pulley to rotate about an axis to dampen the rotary motion of one of the second pair of pulleys in such a manner that the intermediate storage section is in tension during retraction and withdrawal.

主权项

1. A retractor (1400), comprising:
a first frame (1410) extending from first to second end portions (1412, 1414), the first frame includes first and second laterally spaced tracks (1450, 1455) that extend from the first to the second end portions; a second frame (1460) is configured to be fixedly coupled to the second end portion of the first frame; a slidable pulley system (1435) being disposed in the first and second laterally spaced tracks for sliding motion between the first and second frame end portions, the pulley system comprises:
a first pair of pulleys (1440a, 1440b) rotatable on a first axis (A8) and being disposed in the first and second laterally spaced tracks for sliding motion between the first and second frame ends;a guiding flange (1445) coupled in-between the first pair of pulleys; anda slidable block (1446) coupled to the guiding flange and being disposed in the first and second tracks; andat least one spring spool (1452) coupled to the first frame end and the slidable block; a stationary pulley system (1453) having a second pair of pulleys (1454a, 1454b) and a gear (178), wherein one of the second pair of pulleys is rotatable on a second axis (A9), and wherein the second pair of pulleys is journalled at the second frame end of the first frame; a latch mechanism (1457) is configured to couple about the second end portion of the first frame, the latch mechanism being configured to engage or disengage with the guiding flange to prevent the slidable pulley system from sliding towards the stationary pulley system; and a cord (1120) having an intermediate storage section (1122), wherein one end of the storage section (1122) is fixed to one of the first or second frame ends and the other end of the storage section is a free end (1126) extending from the first frame through the second frame and beyond the second end portion, the cord storage section being at least partially wound over the first and second pair of pulleys.