Patent ID: 9526307
Filing Date: 2016-12-27
CPC Classification: A45B

Claim Text:
1. A threaded driving structure for an automatic umbrella at least comprising: a first stick section ( 1 ) and a second stick section ( 2 ) fitted on an outer wall of the first stick section ( 1 ) and sliding relative to the first stick section ( 1 ), the first stick section ( 1 ) including a first fixing sleeve ( 11 ) disposed on a top end thereof, and the first fixing sleeve ( 11 ) having a first orifice ( 111 ) defined thereon, the second stick section ( 2 ) including a second fixing sleeve ( 21 ) mounted on a top end thereof, characterized in that: the first stick section ( 1 ) includes a first support member ( 13 ) mounted therein, and the first support member ( 13 ) has inner threads arranged therein, the second stick section ( 2 ) includes a screw rod ( 22 ) fixed therein, and the screw rod ( 22 ) has outer threads arranged thereon, an upper end of the screw rod ( 22 ) is connected with the second fixing sleeve ( 21 ), and a lower end of the screw rod ( 22 ) is screwed with the inner threads of the first support member ( 13 ) via the first orifice ( 111 ), a lower end of the first support member ( 13 ) is joined with a power apparatus ( 4 ), such that the power apparatus ( 4 ) drives the first support member to rotate, and then the screw rod ( 22 ) moves upwardly and downwardly along the first support member ( 13 ); and a third stick section ( 3 ) fitted on an outer wall of the second stick section ( 2 ) and sliding relative to the second stick section ( 2 ), wherein the third stick section ( 3 ) includes a third fixing sleeve ( 31 ) disposed on a top end thereof, and the second fixing sleeve ( 21 ) has a second orifice ( 23 ) defined thereon, the third stick section ( 3 ) also includes a second support member ( 32 ) mounted therein, wherein an upper end of the second support member ( 32 ) is in connection with the third fixing sleeve ( 31 ), and a lower end of the second support member ( 32 ) is inserted into the second orifice ( 23 ), the second stick section ( 1 ) further includes a first pull rope ( 24 ), an upper segment ( 241 ) of which is coupled with the lower end of the second support member ( 32 ) through a support portion ( 25 ) on the second fixing sleeve ( 21 ); the screw rod ( 22 ) also has an accommodation space ( 131 ) formed therein to accommodate the second support member ( 32 ) and the first pull rope ( 24 ).