Cord-Securing Device for Window Shade

Abstract

A cord-securing device for a window includes including first and second clamping units each having an extension portion and a clamp on opposite ends of an interconnecting portion. The extension portion of the first clamping unit extends through an opening in the interconnecting portion of the first clamp and is engaged with the extension portion of the first clamping unit. A holding unit includes a resilient member having arms. The extension portions of the first and second clamping units are engaged between the arms. A switch arm includes an engaging seat to which a cord is attached. An axle is fixed to a pivotal portion extending from the engaging seat. The axle is rotatably positioned between the extension portions. The switch arm is pivotable to control two positioning end faces of the axle to abut or not abut the extension portions to control clamping or not clamping of the clamps.

1 . A cord-securing device for a window shade comprising:
 a first clamping unit including a first extension portion, a first interconnecting portion, and a first clamp, with the first interconnecting portion having two opposite ends, with the first extension portion and the first clamp respectively connected to the two ends of the first interconnecting portion, with the first interconnecting portion further including an opening;   a second clamping unit including a second extension portion, a second interconnecting portion, and a second clamp, with the second interconnecting portion having two opposite ends, with the second extension portion and the second clamp respectively connected to the two ends of the second interconnecting portion, with one end of the second extension portion extending through the opening and engaged with an end of the first extension portion;   a holding unit including a resilient member having two mutually facing arms, with the first and second extension portions engaged between the two arms of the resilient member; and   a switch arm including an engaging seat and an axle, with a cord of the window shade adapted to be attached to the engaging seat, with a pivotal portion extending from the engaging seat, with the axle fixed to the pivotal portion, with the axle rotatably positioned between the first and second extension portions, with the axle including first and second positioning end faces, with the switch arm pivotable to control the first and second positioning end faces of the axle to abut or not abut the first and second extension portions to control clamping or not clamping of the first and second clamps.   
     
     
         2 . The cord-securing device as claimed in  claim 1 , with the axle including non-circular cross sections perpendicular to a longitudinal axis of the axle, with the axle having a major diameter and a minor diameter, with the major diameter perpendicular to a longitudinal axis of the axle and an extending direction of the cord, and with the minor diameter perpendicular to the major diameter and the longitudinal axis of the axle. 
     
     
         3 . The cord-securing device as claimed in  claim 2 , with the axle including an annular limiting groove formed in an intermediate portion of the axle along the longitudinal axis. 
     
     
         4 . The cord-securing device as claimed in  claim 1 , with the first extension portion and the first clamp extending away from each other from the two ends of the first interconnecting portion. 
     
     
         5 . The cord-securing device as claimed in  claim 4 , with the second extension portion and the second clamp extending away from each other from the two ends of the second interconnecting portion. 
     
     
         6 . The cord-securing device as claimed in  claim 1 , with the first extension portion including a first assembling face, with the second extension portion including a second assembling face facing the first assembling face, and with each of the first and second assembling face being an arcuate face. 
     
     
         7 . The cord-securing device as claimed in  claim 3 , with the second extension portion including a second assembling face facing the first assembling face, and with each of the first and second assembling face being an arcuate face. 
     
     
         8 . The cord-securing device as claimed in  claim 6 , with each of the first and second assembling face including an auxiliary positioning face at a bottom of the arcuate face, with the first and second positioning end faces of the axle respectively abutting the auxiliary positioning faces. 
     
     
         9 . The cord-securing device as claimed in  claim 7 , with each of the first and second assembling face including an auxiliary positioning face at a bottom of the arcuate face, with the first and second positioning end faces of the axle respectively abutting the auxiliary positioning faces. 
     
     
         10 . The cord-securing device as claimed in  claim 8 , with each of the first and second positioning end faces and the auxiliary positioning faces being a planar face. 
     
     
         11 . The cord-securing device as claimed in  claim 9 , with each of the first and second extension portions including a protrusion formed on the auxiliary positioning face thereof, with the protrusions of the first and second extension portions aligned with each other and received in the annular limiting groove. 
     
     
         12 . The cord-securing device as claimed in  claim 1 , with the pivotal portion including two pivotal arms extending from the engaging seat, with each of the two pivotal arms having a distal end, with the distal ends of the two pivotal arms aligned with and spaced from each other along the longitudinal axis of the axle, and with the distal ends of the two pivotal arms interconnected by the axle. 
     
     
         13 . The cord-securing device as claimed in  claim 12 , with the first interconnecting portion having first and second abutment faces on opposite sides of the opening. 
     
     
         14 . The cord-securing device as claimed in  claim 13 , with the distal end of each of the two pivotal arms including a pressing end face, with the pressing end faces aligned with and abutting the first and second abutment faces of the first interconnecting portion. 
     
     
         15 . The cord-securing device as claimed in  claim 1 , with the end of each of the first and second extension portion including an engaging end having a first face, with the first faces of the engaging ends of the first and second extension portions facing each other, with the first face of the first extension portion including a plurality of first engaging sections, with the first face of the second extension portion including a plurality of second engaging sections engaged with the plurality of first engaging sections. 
     
     
         16 . The cord-securing device as claimed in  claim 1 , with each of the first and second clamps including a clamping face and a coupling portion formed on the clamping face, and with the clamping faces of the first and second clamps facing each other. 
     
     
         17 . The cord-securing device as claimed in  claim 1 , with the engaging seat including a through-hole, with the cord adapted to extend through and fixed in the through-hole. 
     
     
         18 . The cord-securing device as claimed in  claim 17 , with the engaging seat including top and bottom ends, and with the through-hole extending from the top end through the bottom end in a direction perpendicular to the longitudinal axis of the axle. 
     
     
         19 . The cord-securing device as claimed in  claim 17 , with the engaging seat including opposite first and second surfaces, with the through-hole extending from the first surface through the second surface of the engaging seat in a direction parallel to the longitudinal axis of the axle. 
     
     
         20 . The cord-securing device as claimed in  claim 1 , further comprising: a connection seat including a base having first and second sides, with the connecting seat further including first and second wings formed on the first and second sides of the connection seat, and with the first and second wings of the connection seat adapted to be fixed to a side of a shade of the window shade. 
     
     
         21 . The cord-securing device as claimed in  claim 20 , with the base including a coupling slot, and with the first and second clamps engaged with each other via the coupling slot. 
     
     
         22 . The cord-securing device as claimed in  claim 1 , further comprising: a connection seat including a base and a platform, with the base adapted to be fixed to a side of a shade of the window shade, with the base including a first pivotal portion, and with the base including a second pivotal portion rotatably engaged with the first pivotal portion. 
     
     
         23 . The cord-securing device as claimed in  claim 22 , with the base including first and second wings on opposite sides of the first pivotal portion, and with the first and second wings adapted to be fixed to the side of the shade. 
     
     
         24 . The cord-securing device as claimed in  claim 22 , with the first and second pivotal portions defining a pivot axis parallel to an extending direction of the cord. 
     
     
         25 . The cord-securing device as claimed in  claim 22 , with the first and second pivotal portions defining a pivot axis perpendicular to an extending direction of the cord. 
     
     
         26 . The cord-securing device as claimed in  claim 25 , with the first pivotal portion including an inner periphery, and with the base further including a plurality of disengagement preventing portions extending radially from the inner periphery of the first pivotal portion. 
     
     
         27 . The cord-securing device as claimed in  claim 26 , with the second pivotal portion including an outer periphery, with the platform including a plurality of lugs extending radially from the outer periphery of the second pivotal portion.