Pull Rod Bag With Stretchable Wheels And Wheel Stretching Operation Mechanism

Abstract

A pull rod bag with telescopic wheels ( 1 ) and a wheel telescoping operation mechanism, the wheel telescoping operation mechanism comprising: two pushing parts ( 9 ), the front end of each pushing part ( 9 ) can be connected with the rotating shaft ( 7 ) of a corresponding telescopic wheel ( 1 ); a transmission unit, comprising a transmission rod ( 8 ), two ends of the transmission rod ( 8 ) are connected with the rear end of a corresponding pushing part ( 9 ), respectively, such that the rotating shaft ( 7 ) of the corresponding telescopic wheel ( 1 ) can be driven to move back and forth in a mounting groove ( 45 ) when the transmission rod ( 8 ) moves up and down; and two locking parts ( 3 ), each locking part ( 3 ) can cooperate with a corresponding pushing part ( 9 ) so that the rotating shaft ( 7 ) of the telescopic wheel ( 1 ) connected with the corresponding pushing part ( 9 ) is locked in a folded state or an unfolded state. The pull rod bag with telescopic wheels ( 1 ) comprises a base ( 4 ) and two telescopic wheels ( 1 ) arranged on two sides of the base ( 4 ), respectively, as well as the above wheel telescoping operation mechanism arranged on the base ( 4 ). The pull rod bag with telescopic wheels ( 1 ) and the wheel telescoping operation mechanism are simple and reliable in structure and convenient to operate.

1 . A wheel telescoping operation mechanism, characterized in that it comprises: two pushing parts, the front end of each pushing part can be connected with the rotating shaft of a corresponding telescopic wheel; a transmission unit, comprising a transmission rod, two ends of the transmission rod are connected with the rear end of a corresponding pushing part, respectively, such that the rotating shaft of the corresponding telescopic wheel can be driven to move back and forth in a mounting groove as the transmission rod moves up and down; and two locking parts, each locking part can cooperate with a corresponding pushing part so that the rotating shaft of the telescopic wheel connected with the corresponding pushing part is locked in a folded state or an unfolded state. 
     
     
         2 . The wheel telescoping operation mechanism as set forth in  claim 1 , characterized in that the mounting groove extends horizontally. 
     
     
         3 . The wheel telescoping operation mechanism as set forth in  claim 1 , characterized in that the front end of each pushing part is formed with a mounting hole, and the rotating shaft of the telescopic wheel rotatably runs through the mounting hole; the rear end of each pushing part is provided with a sleeve, and the end of the transmission rod is inserted in the sleeve. 
     
     
         4 . The wheel telescoping operation mechanism as set forth in  claim 1 , characterized in that each pushing part is formed with a locking groove thereon, and the locking groove comprises a folding end and an unfolding end; each locking part is provided with a projection, and the projection can be correspondingly received into the locking groove to limit the movement of the pushing part. 
     
     
         5 . The wheel telescoping operation mechanism as set forth in  claim 4 , characterized in that the locking groove comprises a first segment and a second segment that are open to each other, one end of the first segment forms an obtuse angle with one end of the second segment, the other end of the first segment forms the folding end, and the other end of the second segment forms the unfolding end. 
     
     
         6 . The wheel telescoping operation mechanism as set forth in  claim 1 , characterized in that from inside to outside, the rotating shaft of the telescopic wheel first runs through the mounting groove and then runs through the central axle hole of the telescopic wheel, and the external end of the rotating shaft of the telescopic wheel extends out of the central axle hole and is fixed by means of a retainer ring. 
     
     
         7 . The wheel telescoping operation mechanism as set forth in  claim 1 , characterized in that the transmission unit further comprises two transmission rod mounting parts capable of being installed into two mounting columns, respectively, and the transmission rod horizontally runs through the two transmission rod mounting parts and is capable of moving up and down along the vertical grooves on said two mounting columns. 
     
     
         8 . The wheel telescoping operation mechanism as set forth in  claim 7 , characterized in that the transmission unit further comprises a set of push and pull rods, and the set of push and pull rods is provided with two pipe locks therein for engagement with the two transmission rod mounting parts, respectively. 
     
     
         9 . The wheel telescoping operation mechanism as set forth in  claim 7 , characterized in that the transmission unit further comprises two spring mounting parts and two springs, each spring mounting part is disposed at the external side of the corresponding mounting column, the top end of each spring is connected to the top of a corresponding spring mounting part, and the bottom end thereof is connected to the transmission rod. 
     
     
         10 . A pull rod bag with telescopic wheels, characterized in that it comprises a base and two telescopic wheels arranged on two sides of the base, respectively, as well as the wheel telescoping operation mechanism arranged on the base as set forth in  claim 1 .